forked from fanruan/easyexcel
Jiaju Zhuang
3 years ago
committed by
GitHub
320 changed files with 10796 additions and 5948 deletions
@ -0,0 +1,2 @@
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lombok.toString.callSuper = CALL |
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lombok.equalsAndHashCode.callSuper= CALL |
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package com.alibaba.excel.analysis.csv; |
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import java.io.FileReader; |
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import java.io.IOException; |
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import java.io.InputStreamReader; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.LinkedHashMap; |
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import java.util.List; |
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import java.util.Map; |
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import com.alibaba.excel.analysis.ExcelReadExecutor; |
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import com.alibaba.excel.context.csv.CsvReadContext; |
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import com.alibaba.excel.enums.CellDataTypeEnum; |
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import com.alibaba.excel.enums.RowTypeEnum; |
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import com.alibaba.excel.exception.ExcelAnalysisException; |
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import com.alibaba.excel.metadata.Cell; |
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import com.alibaba.excel.metadata.data.ReadCellData; |
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import com.alibaba.excel.read.metadata.ReadSheet; |
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import com.alibaba.excel.read.metadata.holder.ReadRowHolder; |
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import com.alibaba.excel.read.metadata.holder.csv.CsvReadWorkbookHolder; |
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import com.alibaba.excel.util.SheetUtils; |
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import com.alibaba.excel.util.StringUtils; |
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import lombok.extern.slf4j.Slf4j; |
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import org.apache.commons.collections4.MapUtils; |
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import org.apache.commons.csv.CSVFormat; |
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import org.apache.commons.csv.CSVRecord; |
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/** |
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* read executor |
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* |
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* @author zhuangjiaju |
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*/ |
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@Slf4j |
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public class CsvExcelReadExecutor implements ExcelReadExecutor { |
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private List<ReadSheet> sheetList; |
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private CsvReadContext csvReadContext; |
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public CsvExcelReadExecutor(CsvReadContext csvReadContext) { |
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this.csvReadContext = csvReadContext; |
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sheetList = new ArrayList<>(); |
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ReadSheet readSheet = new ReadSheet(); |
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sheetList.add(readSheet); |
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readSheet.setSheetNo(0); |
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} |
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@Override |
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public List<ReadSheet> sheetList() { |
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return sheetList; |
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} |
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@Override |
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public void execute() { |
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Iterable<CSVRecord> parseRecords; |
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try { |
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parseRecords = parseRecords(); |
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} catch (IOException e) { |
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throw new ExcelAnalysisException(e); |
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} |
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for (ReadSheet readSheet : sheetList) { |
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readSheet = SheetUtils.match(readSheet, csvReadContext); |
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if (readSheet == null) { |
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continue; |
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} |
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csvReadContext.currentSheet(readSheet); |
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int rowIndex = 0; |
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for (CSVRecord record : parseRecords) { |
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dealRecord(record, rowIndex++); |
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} |
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// The last sheet is read
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csvReadContext.analysisEventProcessor().endSheet(csvReadContext); |
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} |
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} |
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private Iterable<CSVRecord> parseRecords() throws IOException { |
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CsvReadWorkbookHolder csvReadWorkbookHolder = csvReadContext.csvReadWorkbookHolder(); |
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CSVFormat csvFormat = csvReadWorkbookHolder.getCsvFormat(); |
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if (csvReadWorkbookHolder.getMandatoryUseInputStream()) { |
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return csvFormat.parse(new InputStreamReader(csvReadWorkbookHolder.getInputStream())); |
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} |
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if (csvReadWorkbookHolder.getFile() != null) { |
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return csvFormat.parse(new FileReader(csvReadWorkbookHolder.getFile())); |
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} |
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return csvFormat.parse(new InputStreamReader(csvReadWorkbookHolder.getInputStream())); |
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} |
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private void dealRecord(CSVRecord record, int rowIndex) { |
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Map<Integer, Cell> cellMap = new LinkedHashMap<>(); |
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Iterator<String> cellIterator = record.iterator(); |
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int columnIndex = 0; |
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while (cellIterator.hasNext()) { |
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String cellString = cellIterator.next(); |
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ReadCellData<String> readCellData = new ReadCellData<>(); |
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readCellData.setRowIndex(rowIndex); |
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readCellData.setColumnIndex(columnIndex); |
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// csv is an empty string of whether <code>,,</code> is read or <code>,"",</code>
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if (StringUtils.isNotBlank(cellString)) { |
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readCellData.setType(CellDataTypeEnum.STRING); |
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readCellData.setStringValue(cellString); |
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} else { |
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readCellData.setType(CellDataTypeEnum.EMPTY); |
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} |
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cellMap.put(columnIndex++, readCellData); |
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} |
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RowTypeEnum rowType = MapUtils.isEmpty(cellMap) ? RowTypeEnum.EMPTY : RowTypeEnum.DATA; |
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ReadRowHolder readRowHolder = new ReadRowHolder(rowIndex, rowType, |
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csvReadContext.readWorkbookHolder().getGlobalConfiguration(), cellMap); |
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csvReadContext.readRowHolder(readRowHolder); |
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csvReadContext.csvReadSheetHolder().setCellMap(cellMap); |
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csvReadContext.csvReadSheetHolder().setRowIndex(rowIndex); |
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csvReadContext.analysisEventProcessor().endRow(csvReadContext); |
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} |
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} |
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package com.alibaba.excel.constant; |
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/** |
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* Order constant. |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class OrderConstant { |
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/** |
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* Define style. |
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*/ |
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public static final int DEFINE_STYLE = -50000; |
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/** |
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* default order. |
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*/ |
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public static final int DEFAULT_ORDER = 0; |
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/** |
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* Sorting of styles written to cells. |
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*/ |
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public static final int FILL_STYLE = 50000; |
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} |
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package com.alibaba.excel.context.csv; |
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import com.alibaba.excel.context.AnalysisContext; |
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import com.alibaba.excel.read.metadata.holder.csv.CsvReadSheetHolder; |
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import com.alibaba.excel.read.metadata.holder.csv.CsvReadWorkbookHolder; |
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/** |
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* A context is the main anchorage point of a ls xls reader. |
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* |
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* @author Jiaju Zhuang |
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**/ |
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public interface CsvReadContext extends AnalysisContext { |
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/** |
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* All information about the workbook you are currently working on. |
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* |
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* @return Current workbook holder |
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*/ |
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CsvReadWorkbookHolder csvReadWorkbookHolder(); |
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/** |
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* All information about the sheet you are currently working on. |
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* |
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* @return Current sheet holder |
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*/ |
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CsvReadSheetHolder csvReadSheetHolder(); |
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} |
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package com.alibaba.excel.context.csv; |
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import com.alibaba.excel.context.AnalysisContextImpl; |
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import com.alibaba.excel.read.metadata.ReadWorkbook; |
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import com.alibaba.excel.read.metadata.holder.csv.CsvReadSheetHolder; |
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import com.alibaba.excel.read.metadata.holder.csv.CsvReadWorkbookHolder; |
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import com.alibaba.excel.support.ExcelTypeEnum; |
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/** |
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* A context is the main anchorage point of a ls xls reader. |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class DefaultCsvReadContext extends AnalysisContextImpl implements CsvReadContext { |
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public DefaultCsvReadContext(ReadWorkbook readWorkbook, ExcelTypeEnum actualExcelType) { |
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super(readWorkbook, actualExcelType); |
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} |
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@Override |
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public CsvReadWorkbookHolder csvReadWorkbookHolder() { |
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return (CsvReadWorkbookHolder)readWorkbookHolder(); |
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} |
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@Override |
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public CsvReadSheetHolder csvReadSheetHolder() { |
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return (CsvReadSheetHolder)readSheetHolder(); |
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} |
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} |
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@ -1,36 +1,9 @@
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package com.alibaba.excel.converters; |
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import com.alibaba.excel.enums.CellDataTypeEnum; |
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import com.alibaba.excel.metadata.CellData; |
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import com.alibaba.excel.metadata.GlobalConfiguration; |
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import com.alibaba.excel.metadata.property.ExcelContentProperty; |
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/** |
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* An empty converter.It's automatically converted by type. |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class AutoConverter implements Converter { |
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@Override |
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public Class supportJavaTypeKey() { |
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return null; |
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} |
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@Override |
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public CellDataTypeEnum supportExcelTypeKey() { |
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return null; |
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} |
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@Override |
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public Object convertToJavaData(CellData cellData, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) { |
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return null; |
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} |
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@Override |
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public CellData convertToExcelData(Object value, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) { |
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return null; |
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} |
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public class AutoConverter implements Converter<Object> { |
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} |
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package com.alibaba.excel.converters; |
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/** |
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* When implementing <code>convertToExcelData</code> method, pay attention to the reference <code>value</code> may be |
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* null |
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* |
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* @author JiaJu Zhuang |
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**/ |
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public interface NullableObjectConverter<T> extends Converter<T> { |
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} |
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package com.alibaba.excel.converters; |
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import com.alibaba.excel.context.AnalysisContext; |
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import com.alibaba.excel.metadata.data.ReadCellData; |
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import com.alibaba.excel.metadata.property.ExcelContentProperty; |
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import lombok.AllArgsConstructor; |
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import lombok.Data; |
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/** |
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* read converter context |
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* |
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* @author Jiaju Zhuang |
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*/ |
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@Data |
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@AllArgsConstructor |
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public class ReadConverterContext<T> { |
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/** |
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* Excel cell data.NotNull. |
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*/ |
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private ReadCellData<T> readCellData; |
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/** |
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* Content property.Nullable. |
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*/ |
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private ExcelContentProperty contentProperty; |
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/** |
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* context.NotNull. |
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*/ |
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private AnalysisContext analysisContext; |
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} |
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package com.alibaba.excel.converters; |
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import com.alibaba.excel.context.WriteContext; |
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import com.alibaba.excel.metadata.property.ExcelContentProperty; |
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import lombok.AllArgsConstructor; |
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import lombok.Data; |
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/** |
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* write converter context |
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* |
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* @author Jiaju Zhuang |
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*/ |
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@Data |
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@AllArgsConstructor |
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public class WriteConverterContext<T> { |
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/** |
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* Java Data.NotNull. |
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*/ |
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private T value; |
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/** |
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* Content property.Nullable. |
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*/ |
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private ExcelContentProperty contentProperty; |
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/** |
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* write context |
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*/ |
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private WriteContext writeContext; |
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} |
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package com.alibaba.excel.converters.biginteger; |
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import java.math.BigInteger; |
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import java.text.ParseException; |
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import com.alibaba.excel.converters.Converter; |
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import com.alibaba.excel.enums.CellDataTypeEnum; |
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import com.alibaba.excel.metadata.GlobalConfiguration; |
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import com.alibaba.excel.metadata.data.ReadCellData; |
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import com.alibaba.excel.metadata.data.WriteCellData; |
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import com.alibaba.excel.metadata.property.ExcelContentProperty; |
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import com.alibaba.excel.util.NumberUtils; |
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|
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/** |
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* BigDecimal and string converter |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class BigIntegerStringConverter implements Converter<BigInteger> { |
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@Override |
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public Class<BigInteger> supportJavaTypeKey() { |
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return BigInteger.class; |
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} |
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@Override |
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public CellDataTypeEnum supportExcelTypeKey() { |
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return CellDataTypeEnum.STRING; |
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} |
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@Override |
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public BigInteger convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) throws ParseException { |
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return NumberUtils.parseBigDecimal(cellData.getStringValue(), contentProperty).toBigInteger(); |
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} |
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@Override |
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public WriteCellData<?> convertToExcelData(BigInteger value, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) { |
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return NumberUtils.formatToCellData(value, contentProperty); |
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} |
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} |
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package com.alibaba.excel.converters.date; |
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import java.util.Date; |
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import com.alibaba.excel.converters.Converter; |
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import com.alibaba.excel.metadata.GlobalConfiguration; |
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import com.alibaba.excel.metadata.data.WriteCellData; |
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import com.alibaba.excel.metadata.property.ExcelContentProperty; |
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import com.alibaba.excel.util.DateUtils; |
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import com.alibaba.excel.util.WorkBookUtil; |
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/** |
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* Date and date converter |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class DateDateConverter implements Converter<Date> { |
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@Override |
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public Class<Date> supportJavaTypeKey() { |
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return Date.class; |
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} |
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@Override |
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public WriteCellData<?> convertToExcelData(Date value, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) throws Exception { |
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WriteCellData<?> cellData = new WriteCellData<>(value); |
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String format = null; |
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if (contentProperty != null && contentProperty.getDateTimeFormatProperty() != null) { |
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format = contentProperty.getDateTimeFormatProperty().getFormat(); |
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} |
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WorkBookUtil.fillDataFormat(cellData, format, DateUtils.defaultDateFormat); |
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return cellData; |
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} |
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} |
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package com.alibaba.excel.enums; |
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import org.apache.poi.ss.usermodel.CellType; |
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/** |
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* Used to supplement {@link CellType}. |
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* |
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* Cannot distinguish between date and number in write case. |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public enum NumericCellTypeEnum { |
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/** |
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* number |
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*/ |
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NUMBER, |
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/** |
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* date. Support only when writing. |
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*/ |
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DATE, |
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; |
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} |
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@ -1,8 +1,21 @@
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package com.alibaba.excel.event; |
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import com.alibaba.excel.constant.OrderConstant; |
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/** |
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* Intercepts handle some business logic |
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* |
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* @author Jiaju Zhuang |
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**/ |
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public interface Handler {} |
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public interface Handler extends Order { |
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/** |
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* handler order |
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* |
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* @return order |
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*/ |
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@Override |
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default int order() { |
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return OrderConstant.DEFAULT_ORDER; |
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} |
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} |
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@ -1,38 +0,0 @@
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package com.alibaba.excel.event; |
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import org.apache.poi.ss.usermodel.Cell; |
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import org.apache.poi.ss.usermodel.Row; |
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import org.apache.poi.ss.usermodel.Sheet; |
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|
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/** |
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* |
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* @author jipengfei |
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* @deprecated please use {@link com.alibaba.excel.write.handler.WriteHandler} |
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*/ |
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@Deprecated |
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public interface WriteHandler { |
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|
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/** |
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* Custom operation after creating each sheet |
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* |
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* @param sheetNo |
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* @param sheet |
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*/ |
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void sheet(int sheetNo, Sheet sheet); |
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|
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/** |
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* Custom operation after creating each row |
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* |
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* @param rowNum |
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* @param row |
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*/ |
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void row(int rowNum, Row row); |
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|
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/** |
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* Custom operation after creating each cell |
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* |
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* @param cellNum |
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* @param cell |
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*/ |
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void cell(int cellNum, Cell cell); |
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} |
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@ -1,40 +0,0 @@
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package com.alibaba.excel.metadata; |
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|
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import java.util.HashMap; |
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import java.util.Map; |
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|
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import org.apache.poi.ss.usermodel.CellStyle; |
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|
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import com.alibaba.excel.annotation.ExcelIgnore; |
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|
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/** |
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* Excel基础模型 |
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* |
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* @author jipengfei |
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* @deprecated Now you don't need to extend any classes |
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*/ |
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@Deprecated |
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public class BaseRowModel { |
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|
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/** |
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* 每列样式 |
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*/ |
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@ExcelIgnore |
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private Map<Integer, CellStyle> cellStyleMap = new HashMap<Integer, CellStyle>(); |
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|
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public void addStyle(Integer row, CellStyle cellStyle) { |
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cellStyleMap.put(row, cellStyle); |
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} |
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|
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public CellStyle getStyle(Integer row) { |
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return cellStyleMap.get(row); |
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} |
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|
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public Map<Integer, CellStyle> getCellStyleMap() { |
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return cellStyleMap; |
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} |
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|
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public void setCellStyleMap(Map<Integer, CellStyle> cellStyleMap) { |
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this.cellStyleMap = cellStyleMap; |
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} |
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} |
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@ -1,286 +0,0 @@
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package com.alibaba.excel.metadata; |
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|
||||
import java.math.BigDecimal; |
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|
||||
import com.alibaba.excel.enums.CellDataTypeEnum; |
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import com.alibaba.excel.util.StringUtils; |
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|
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/** |
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* Excel internal cell data. |
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* |
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* <p> |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class CellData<T> extends AbstractCell { |
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private CellDataTypeEnum type; |
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/** |
||||
* {@link CellDataTypeEnum#NUMBER} |
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*/ |
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private BigDecimal numberValue; |
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/** |
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* {@link CellDataTypeEnum#STRING} and{@link CellDataTypeEnum#ERROR} |
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*/ |
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private String stringValue; |
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/** |
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* {@link CellDataTypeEnum#BOOLEAN} |
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*/ |
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private Boolean booleanValue; |
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private Boolean formula; |
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private String formulaValue; |
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private byte[] imageValue; |
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/** |
||||
* The number formatting.Currently only supported when reading |
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*/ |
||||
private Integer dataFormat; |
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/** |
||||
* The string of number formatting.Currently only supported when reading |
||||
*/ |
||||
private String dataFormatString; |
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/** |
||||
* The resulting converted data. |
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*/ |
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private T data; |
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|
||||
public CellData(CellData<T> other) { |
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this.type = other.type; |
||||
this.numberValue = other.numberValue; |
||||
this.stringValue = other.stringValue; |
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this.booleanValue = other.booleanValue; |
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this.formula = other.formula; |
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this.formulaValue = other.formulaValue; |
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this.imageValue = other.imageValue; |
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this.dataFormat = other.dataFormat; |
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this.dataFormatString = other.dataFormatString; |
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this.data = other.data; |
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} |
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|
||||
public CellData() {} |
||||
|
||||
public CellData(T data) { |
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this.data = data; |
||||
} |
||||
|
||||
public CellData(T data, String formulaValue) { |
||||
this.data = data; |
||||
this.formula = Boolean.TRUE; |
||||
this.formulaValue = formulaValue; |
||||
} |
||||
|
||||
public CellData(String stringValue) { |
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this(CellDataTypeEnum.STRING, stringValue); |
||||
} |
||||
|
||||
public CellData(CellDataTypeEnum type, String stringValue) { |
||||
if (type != CellDataTypeEnum.STRING && type != CellDataTypeEnum.ERROR) { |
||||
throw new IllegalArgumentException("Only support CellDataTypeEnum.STRING and CellDataTypeEnum.ERROR"); |
||||
} |
||||
if (stringValue == null) { |
||||
throw new IllegalArgumentException("StringValue can not be null"); |
||||
} |
||||
this.type = type; |
||||
this.stringValue = stringValue; |
||||
this.formula = Boolean.FALSE; |
||||
} |
||||
|
||||
public CellData(BigDecimal numberValue) { |
||||
if (numberValue == null) { |
||||
throw new IllegalArgumentException("DoubleValue can not be null"); |
||||
} |
||||
this.type = CellDataTypeEnum.NUMBER; |
||||
this.numberValue = numberValue; |
||||
this.formula = Boolean.FALSE; |
||||
} |
||||
|
||||
public CellData(byte[] imageValue) { |
||||
if (imageValue == null) { |
||||
throw new IllegalArgumentException("ImageValue can not be null"); |
||||
} |
||||
this.type = CellDataTypeEnum.IMAGE; |
||||
this.imageValue = imageValue; |
||||
this.formula = Boolean.FALSE; |
||||
} |
||||
|
||||
public CellData(Boolean booleanValue) { |
||||
if (booleanValue == null) { |
||||
throw new IllegalArgumentException("BooleanValue can not be null"); |
||||
} |
||||
this.type = CellDataTypeEnum.BOOLEAN; |
||||
this.booleanValue = booleanValue; |
||||
this.formula = Boolean.FALSE; |
||||
} |
||||
|
||||
public CellData(CellDataTypeEnum type) { |
||||
if (type == null) { |
||||
throw new IllegalArgumentException("Type can not be null"); |
||||
} |
||||
this.type = type; |
||||
this.formula = Boolean.FALSE; |
||||
} |
||||
|
||||
public CellDataTypeEnum getType() { |
||||
return type; |
||||
} |
||||
|
||||
public void setType(CellDataTypeEnum type) { |
||||
this.type = type; |
||||
} |
||||
|
||||
public BigDecimal getNumberValue() { |
||||
return numberValue; |
||||
} |
||||
|
||||
public void setNumberValue(BigDecimal numberValue) { |
||||
this.numberValue = numberValue; |
||||
} |
||||
|
||||
public String getStringValue() { |
||||
return stringValue; |
||||
} |
||||
|
||||
public void setStringValue(String stringValue) { |
||||
this.stringValue = stringValue; |
||||
} |
||||
|
||||
public Boolean getBooleanValue() { |
||||
return booleanValue; |
||||
} |
||||
|
||||
public void setBooleanValue(Boolean booleanValue) { |
||||
this.booleanValue = booleanValue; |
||||
} |
||||
|
||||
public Boolean getFormula() { |
||||
return formula; |
||||
} |
||||
|
||||
public void setFormula(Boolean formula) { |
||||
this.formula = formula; |
||||
} |
||||
|
||||
public String getFormulaValue() { |
||||
return formulaValue; |
||||
} |
||||
|
||||
public void setFormulaValue(String formulaValue) { |
||||
this.formulaValue = formulaValue; |
||||
} |
||||
|
||||
public byte[] getImageValue() { |
||||
return imageValue; |
||||
} |
||||
|
||||
public void setImageValue(byte[] imageValue) { |
||||
this.imageValue = imageValue; |
||||
} |
||||
|
||||
public Integer getDataFormat() { |
||||
return dataFormat; |
||||
} |
||||
|
||||
public void setDataFormat(Integer dataFormat) { |
||||
this.dataFormat = dataFormat; |
||||
} |
||||
|
||||
public String getDataFormatString() { |
||||
return dataFormatString; |
||||
} |
||||
|
||||
public void setDataFormatString(String dataFormatString) { |
||||
this.dataFormatString = dataFormatString; |
||||
} |
||||
|
||||
public T getData() { |
||||
return data; |
||||
} |
||||
|
||||
public void setData(T data) { |
||||
this.data = data; |
||||
} |
||||
|
||||
/** |
||||
* Ensure that the object does not appear null |
||||
*/ |
||||
public void checkEmpty() { |
||||
if (type == null) { |
||||
type = CellDataTypeEnum.EMPTY; |
||||
} |
||||
switch (type) { |
||||
case STRING: |
||||
case ERROR: |
||||
if (StringUtils.isEmpty(stringValue)) { |
||||
type = CellDataTypeEnum.EMPTY; |
||||
} |
||||
return; |
||||
case NUMBER: |
||||
if (numberValue == null) { |
||||
type = CellDataTypeEnum.EMPTY; |
||||
} |
||||
return; |
||||
case BOOLEAN: |
||||
if (booleanValue == null) { |
||||
type = CellDataTypeEnum.EMPTY; |
||||
} |
||||
return; |
||||
default: |
||||
} |
||||
} |
||||
|
||||
public static CellData newEmptyInstance() { |
||||
return newEmptyInstance(null, null); |
||||
} |
||||
|
||||
public static CellData newEmptyInstance(Integer rowIndex, Integer columnIndex) { |
||||
CellData cellData = new CellData(CellDataTypeEnum.EMPTY); |
||||
cellData.setRowIndex(rowIndex); |
||||
cellData.setColumnIndex(columnIndex); |
||||
return cellData; |
||||
} |
||||
|
||||
public static CellData newInstance(Boolean booleanValue) { |
||||
return newInstance(booleanValue, null, null); |
||||
} |
||||
|
||||
public static CellData newInstance(Boolean booleanValue, Integer rowIndex, Integer columnIndex) { |
||||
CellData cellData = new CellData(booleanValue); |
||||
cellData.setRowIndex(rowIndex); |
||||
cellData.setColumnIndex(columnIndex); |
||||
return cellData; |
||||
} |
||||
|
||||
public static CellData newInstance(String stringValue, Integer rowIndex, Integer columnIndex) { |
||||
CellData cellData = new CellData(stringValue); |
||||
cellData.setRowIndex(rowIndex); |
||||
cellData.setColumnIndex(columnIndex); |
||||
return cellData; |
||||
} |
||||
|
||||
public static CellData newInstance(BigDecimal numberValue, Integer rowIndex, Integer columnIndex) { |
||||
CellData cellData = new CellData(numberValue); |
||||
cellData.setRowIndex(rowIndex); |
||||
cellData.setColumnIndex(columnIndex); |
||||
return cellData; |
||||
} |
||||
|
||||
@Override |
||||
public String toString() { |
||||
if (type == null) { |
||||
return StringUtils.EMPTY; |
||||
} |
||||
switch (type) { |
||||
case NUMBER: |
||||
return numberValue.toString(); |
||||
case BOOLEAN: |
||||
return booleanValue.toString(); |
||||
case DIRECT_STRING: |
||||
case STRING: |
||||
case ERROR: |
||||
return stringValue; |
||||
case IMAGE: |
||||
return "image[" + imageValue.length + "]"; |
||||
default: |
||||
return StringUtils.EMPTY; |
||||
} |
||||
} |
||||
|
||||
} |
||||
@ -0,0 +1,9 @@
|
||||
package com.alibaba.excel.metadata; |
||||
|
||||
/** |
||||
* Null object. |
||||
* |
||||
* @author Jiaju Zhuang |
||||
*/ |
||||
public class NullObject { |
||||
} |
||||
Some files were not shown because too many files have changed in this diff Show More
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Reference in new issue