mirror of https://github.com/alibaba/easyexcel
Jiaju Zhuang
5 years ago
26 changed files with 450 additions and 113 deletions
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package com.alibaba.excel.analysis.v03.handlers; |
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import org.apache.poi.hssf.record.IndexRecord; |
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import org.apache.poi.hssf.record.Record; |
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import com.alibaba.excel.analysis.v03.AbstractXlsRecordHandler; |
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import com.alibaba.excel.context.AnalysisContext; |
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/** |
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* Record handler |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class IndexRecordHandler extends AbstractXlsRecordHandler { |
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private AnalysisContext context; |
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public IndexRecordHandler(AnalysisContext context) { |
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this.context = context; |
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} |
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@Override |
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public boolean support(Record record) { |
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return record instanceof IndexRecord; |
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} |
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@Override |
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public void init() {} |
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@Override |
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public void processRecord(Record record) { |
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if (context.readSheetHolder() == null) { |
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return; |
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} |
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context.readSheetHolder().setApproximateTotalRowNumber(((IndexRecord)record).getLastRowAdd1()); |
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} |
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@Override |
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public int getOrder() { |
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return 1; |
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} |
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} |
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package com.alibaba.excel.util; |
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import java.lang.ref.SoftReference; |
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import java.lang.reflect.Field; |
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import java.lang.reflect.Modifier; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.TreeMap; |
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import java.util.concurrent.ConcurrentHashMap; |
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import com.alibaba.excel.annotation.ExcelIgnore; |
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import com.alibaba.excel.annotation.ExcelIgnoreUnannotated; |
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import com.alibaba.excel.annotation.ExcelProperty; |
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import com.alibaba.excel.exception.ExcelCommonException; |
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import com.alibaba.excel.metadata.BaseRowModel; |
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/** |
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* Class utils |
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* |
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* @author Jiaju Zhuang |
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**/ |
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public class ClassUtils { |
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private static final Map<Class, SoftReference<FieldCache>> FIELD_CACHE = |
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new ConcurrentHashMap<Class, SoftReference<FieldCache>>(); |
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public static void declaredFields(Class clazz, List<Field> defaultFieldList, Map<Integer, Field> customFiledMap, |
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Map<String, Field> ignoreMap, Boolean convertAllFiled) { |
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FieldCache fieldCache = getFieldCache(clazz, convertAllFiled); |
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if (fieldCache != null) { |
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defaultFieldList.addAll(fieldCache.getDefaultFieldList()); |
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customFiledMap.putAll(fieldCache.getCustomFiledMap()); |
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ignoreMap.putAll(fieldCache.getIgnoreMap()); |
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} |
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} |
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public static void declaredFields(Class clazz, List<Field> fieldList, Boolean convertAllFiled) { |
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FieldCache fieldCache = getFieldCache(clazz, convertAllFiled); |
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if (fieldCache != null) { |
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fieldList.addAll(fieldCache.getAllFieldList()); |
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} |
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} |
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private static FieldCache getFieldCache(Class clazz, Boolean convertAllFiled) { |
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if (clazz == null) { |
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return null; |
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} |
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SoftReference<FieldCache> fieldCacheSoftReference = FIELD_CACHE.get(clazz); |
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if (fieldCacheSoftReference != null && fieldCacheSoftReference.get() != null) { |
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return fieldCacheSoftReference.get(); |
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} |
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synchronized (clazz) { |
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fieldCacheSoftReference = FIELD_CACHE.get(clazz); |
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if (fieldCacheSoftReference != null && fieldCacheSoftReference.get() != null) { |
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return fieldCacheSoftReference.get(); |
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} |
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declaredFields(clazz, convertAllFiled); |
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} |
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return FIELD_CACHE.get(clazz).get(); |
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} |
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private static void declaredFields(Class clazz, Boolean convertAllFiled) { |
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List<Field> tempFieldList = new ArrayList<Field>(); |
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Class tempClass = clazz; |
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// When the parent class is null, it indicates that the parent class (Object class) has reached the top
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// level.
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while (tempClass != null && tempClass != BaseRowModel.class) { |
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Collections.addAll(tempFieldList, tempClass.getDeclaredFields()); |
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// Get the parent class and give it to yourself
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tempClass = tempClass.getSuperclass(); |
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} |
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// Screening of field
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List<Field> defaultFieldList = new ArrayList<Field>(); |
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Map<Integer, Field> customFiledMap = new TreeMap<Integer, Field>(); |
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List<Field> allFieldList = new ArrayList<Field>(); |
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Map<String, Field> ignoreMap = new HashMap<String, Field>(16); |
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ExcelIgnoreUnannotated excelIgnoreUnannotated = |
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(ExcelIgnoreUnannotated)clazz.getAnnotation(ExcelIgnoreUnannotated.class); |
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for (Field field : tempFieldList) { |
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ExcelIgnore excelIgnore = field.getAnnotation(ExcelIgnore.class); |
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if (excelIgnore != null) { |
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ignoreMap.put(field.getName(), field); |
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continue; |
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} |
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ExcelProperty excelProperty = field.getAnnotation(ExcelProperty.class); |
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boolean noExcelProperty = excelProperty == null |
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&& ((convertAllFiled != null && !convertAllFiled) || excelIgnoreUnannotated != null); |
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if (noExcelProperty) { |
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ignoreMap.put(field.getName(), field); |
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continue; |
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} |
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boolean isStaticFinalOrTransient = |
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(Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers())) |
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|| Modifier.isTransient(field.getModifiers()); |
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if (excelProperty == null && isStaticFinalOrTransient) { |
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ignoreMap.put(field.getName(), field); |
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continue; |
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} |
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if (excelProperty == null || excelProperty.index() < 0) { |
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defaultFieldList.add(field); |
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allFieldList.add(field); |
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continue; |
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} |
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if (customFiledMap.containsKey(excelProperty.index())) { |
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throw new ExcelCommonException("The index of '" + customFiledMap.get(excelProperty.index()).getName() |
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+ "' and '" + field.getName() + "' must be inconsistent"); |
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} |
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customFiledMap.put(excelProperty.index(), field); |
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allFieldList.add(field); |
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} |
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FIELD_CACHE.put(clazz, |
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new SoftReference<FieldCache>(new FieldCache(defaultFieldList, customFiledMap, allFieldList, ignoreMap))); |
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} |
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private static class FieldCache { |
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private List<Field> defaultFieldList; |
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private Map<Integer, Field> customFiledMap; |
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private List<Field> allFieldList; |
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private Map<String, Field> ignoreMap; |
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public FieldCache(List<Field> defaultFieldList, Map<Integer, Field> customFiledMap, List<Field> allFieldList, |
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Map<String, Field> ignoreMap) { |
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this.defaultFieldList = defaultFieldList; |
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this.customFiledMap = customFiledMap; |
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this.allFieldList = allFieldList; |
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this.ignoreMap = ignoreMap; |
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} |
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public List<Field> getDefaultFieldList() { |
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return defaultFieldList; |
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} |
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public Map<Integer, Field> getCustomFiledMap() { |
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return customFiledMap; |
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} |
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public List<Field> getAllFieldList() { |
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return allFieldList; |
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} |
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public Map<String, Field> getIgnoreMap() { |
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return ignoreMap; |
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} |
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} |
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} |
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@ -0,0 +1,110 @@
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package com.alibaba.easyexcel.test.temp; |
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import java.io.File; |
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import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import org.junit.Ignore; |
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import org.junit.Test; |
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import com.alibaba.easyexcel.test.demo.fill.FillData; |
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import com.alibaba.easyexcel.test.util.TestFileUtil; |
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import com.alibaba.excel.EasyExcel; |
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import com.alibaba.excel.ExcelWriter; |
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import com.alibaba.excel.write.metadata.WriteSheet; |
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import com.alibaba.excel.write.metadata.fill.FillConfig; |
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import com.alibaba.excel.write.style.row.SimpleRowHeightStyleStrategy; |
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/** |
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* 写的填充写法 |
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* |
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* @since 2.1.1 |
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* @author Jiaju Zhuang |
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*/ |
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@Ignore |
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public class FillTempTest { |
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/** |
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* 复杂的填充 |
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* |
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* @since 2.1.1 |
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*/ |
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@Test |
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public void complexFill() { |
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// 模板注意 用{} 来表示你要用的变量 如果本来就有"{","}" 特殊字符 用"\{","\}"代替
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// {} 代表普通变量 {.} 代表是list的变量
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String templateFileName = "D:\\test\\complex.xlsx"; |
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String fileName = TestFileUtil.getPath() + "complexFill" + System.currentTimeMillis() + ".xlsx"; |
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ExcelWriter excelWriter = EasyExcel.write(fileName).withTemplate(templateFileName).build(); |
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WriteSheet writeSheet = EasyExcel.writerSheet().build(); |
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// 这里注意 入参用了forceNewRow 代表在写入list的时候不管list下面有没有空行 都会创建一行，然后下面的数据往后移动。默认 是false，会直接使用下一行，如果没有则创建。
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// forceNewRow 如果设置了true,有个缺点 就是他会把所有的数据都放到内存了，所以慎用
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// 简单的说 如果你的模板有list,且list不是最后一行，下面还有数据需要填充 就必须设置 forceNewRow=true 但是这个就会把所有数据放到内存 会很耗内存
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// 如果数据量大 list不是最后一行 参照下一个
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FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build(); |
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excelWriter.fill(data(), fillConfig, writeSheet); |
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excelWriter.fill(data(), fillConfig, writeSheet); |
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Map<String, Object> map = new HashMap<String, Object>(); |
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map.put("date", "2019年10月9日13:28:28"); |
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map.put("total", 1000); |
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excelWriter.fill(map, writeSheet); |
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excelWriter.finish(); |
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} |
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/** |
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* 数据量大的复杂填充 |
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* <p> |
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* 这里的解决方案是 确保模板list为最后一行，然后再拼接table.还有03版没救，只能刚正面加内存。 |
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* |
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* @since 2.1.1 |
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*/ |
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@Test |
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public void complexFillWithTable() { |
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// 模板注意 用{} 来表示你要用的变量 如果本来就有"{","}" 特殊字符 用"\{","\}"代替
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// {} 代表普通变量 {.} 代表是list的变量
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// 这里模板 删除了list以后的数据，也就是统计的这一行
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String templateFileName = "D:\\test\\complex.xlsx"; |
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String fileName = TestFileUtil.getPath() + "complexFillWithTable" + System.currentTimeMillis() + ".xlsx"; |
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ExcelWriter excelWriter = EasyExcel.write(fileName).withTemplate(templateFileName).build(); |
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WriteSheet writeSheet = EasyExcel.writerSheet().build(); |
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// 直接写入数据
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excelWriter.fill(data(), writeSheet); |
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excelWriter.fill(data(), writeSheet); |
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// 写入list之前的数据
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Map<String, Object> map = new HashMap<String, Object>(); |
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map.put("date", "2019年10月9日13:28:28"); |
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excelWriter.fill(map, writeSheet); |
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// list 后面还有个统计 想办法手动写入
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// 这里偷懒直接用list 也可以用对象
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List<List<String>> totalListList = new ArrayList<List<String>>(); |
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List<String> totalList = new ArrayList<String>(); |
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totalListList.add(totalList); |
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totalList.add(null); |
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totalList.add(null); |
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totalList.add(null); |
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// 第四列
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totalList.add("统计:1000"); |
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// 这里是write 别和fill 搞错了
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excelWriter.write(totalListList, writeSheet); |
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excelWriter.finish(); |
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// 总体上写法比较复杂 但是也没有想到好的版本 异步的去写入excel 不支持行的删除和移动，也不支持备注这种的写入，所以也排除了可以
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// 新建一个 然后一点点复制过来的方案，最后导致list需要新增行的时候，后面的列的数据没法后移，后续会继续想想解决方案
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} |
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private List<FillData> data() { |
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List<FillData> list = new ArrayList<FillData>(); |
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for (int i = 0; i < 10; i++) { |
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FillData fillData = new FillData(); |
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list.add(fillData); |
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fillData.setName("张三"); |
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fillData.setNumber(5.2); |
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} |
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return list; |
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} |
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} |
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