mirror of https://github.com/alibaba/easyexcel
Jiaju Zhuang
5 years ago
33 changed files with 459 additions and 67 deletions
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package com.alibaba.excel.converters.url; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.net.URL; |
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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.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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import com.alibaba.excel.util.IoUtils; |
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/** |
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* Url and image converter |
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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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public class UrlImageConverter implements Converter<URL> { |
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@Override |
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public Class supportJavaTypeKey() { |
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return URL.class; |
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} |
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@Override |
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public CellDataTypeEnum supportExcelTypeKey() { |
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return CellDataTypeEnum.IMAGE; |
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} |
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@Override |
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public URL convertToJavaData(CellData cellData, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) { |
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throw new UnsupportedOperationException("Cannot convert images to url."); |
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} |
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@Override |
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public CellData convertToExcelData(URL value, ExcelContentProperty contentProperty, |
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GlobalConfiguration globalConfiguration) throws IOException { |
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InputStream inputStream = null; |
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try { |
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inputStream = value.openStream(); |
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byte[] bytes = IoUtils.toByteArray(inputStream); |
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return new CellData(bytes); |
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} finally { |
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if (inputStream != null) { |
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inputStream.close(); |
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} |
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} |
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} |
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} |
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package com.alibaba.easyexcel.test.demo.read; |
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import java.util.List; |
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/** |
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* 假设这个是你的DAO存储。当然还要这个类让spring管理，当然你不用需要存储，也不需要这个类。 |
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* |
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* @author Jiaju Zhuang |
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**/ |
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public class DemoDAO { |
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public void save(List<DemoData> list) { |
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// 如果是mybatis,尽量别直接调用多次insert,自己写一个mapper里面新增一个方法batchInsert,所有数据一次性插入
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} |
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} |
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package com.alibaba.easyexcel.test.demo.web; |
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import java.util.List; |
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import org.springframework.stereotype.Repository; |
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import com.alibaba.easyexcel.test.demo.read.DemoData; |
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/** |
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* 假设这个是你的DAO存储。当然还要这个类让spring管理，当然你不用需要存储，也不需要这个类。 |
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* |
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* @author Jiaju Zhuang |
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**/ |
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@Repository |
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public class UploadDAO { |
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public void save(List<UploadData> list) { |
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// 如果是mybatis,尽量别直接调用多次insert,自己写一个mapper里面新增一个方法batchInsert,所有数据一次性插入
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} |
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} |
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package com.alibaba.easyexcel.test.temp.read; |
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import java.util.Map; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import com.alibaba.excel.context.AnalysisContext; |
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import com.alibaba.excel.event.AnalysisEventListener; |
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import com.alibaba.excel.metadata.CellData; |
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import com.alibaba.fastjson.JSON; |
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/** |
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* 模板的读取类 |
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* |
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* @author Jiaju Zhuang |
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*/ |
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public class HDListener extends AnalysisEventListener<HeadReadData> { |
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private static final Logger LOGGER = LoggerFactory.getLogger(HDListener.class); |
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/** |
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* 每隔5条存储数据库，实际使用中可以3000条，然后清理list ，方便内存回收 |
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*/ |
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private static final int BATCH_COUNT = 5; |
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@Override |
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public void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) { |
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LOGGER.info("HEAD:{}", JSON.toJSONString(headMap)); |
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} |
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@Override |
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public void invoke(HeadReadData data, AnalysisContext context) { |
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LOGGER.info("index:{}", context.readRowHolder().getRowIndex()); |
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LOGGER.info("解析到一条数据:{}", JSON.toJSONString(data)); |
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} |
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@Override |
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public void doAfterAllAnalysed(AnalysisContext context) { |
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LOGGER.info("所有数据解析完成！"); |
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} |
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} |
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@ -0,0 +1,18 @@
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package com.alibaba.easyexcel.test.temp.read; |
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import com.alibaba.excel.annotation.ExcelProperty; |
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import lombok.Data; |
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/** |
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* 临时测试 |
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* |
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* @author Jiaju Zhuang |
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**/ |
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@Data |
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public class HeadReadData { |
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@ExcelProperty("头1") |
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private String h1; |
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@ExcelProperty({"头", "头2"}) |
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private String h2; |
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} |
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@ -0,0 +1,25 @@
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package com.alibaba.easyexcel.test.temp.read; |
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import java.io.File; |
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import org.junit.Test; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import com.alibaba.excel.EasyExcel; |
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/** |
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* 临时测试 |
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* |
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* @author Jiaju Zhuang |
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**/ |
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public class HeadReadTest { |
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private static final Logger LOGGER = LoggerFactory.getLogger(HeadReadTest.class); |
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@Test |
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public void test() throws Exception { |
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File file = new File("D:\\test\\headt1.xlsx"); |
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EasyExcel.read(file, HeadReadData.class, new HDListener()).sheet().doRead(); |
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} |
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} |
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