easyExcel使用
2020-08-14 本文已影响0人
香沙小熊
1.封装工具类
@Slf4j
public class DefaultExcelListener<T> extends AnalysisEventListener<T> {
private final List<T> rows = new ArrayList();
@Override
public void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) {
log.info("解析到一条头数据:{}", JSON.toJSONString(headMap));
}
@Override
public void invoke(T object, AnalysisContext context) {
rows.add(object);
// 实际数据量比较大时,rows里的数据可以存到一定量之后进行批量处理(比如存到数据库),
// 然后清空列表,以防止内存占用过多造成OOM
}
@Override
public void doAfterAllAnalysed(AnalysisContext context) {
log.info("read {} rows", rows.size());
}
/**
* 在转换异常 获取其他异常下会调用本接口。抛出异常则停止读取。如果这里不抛出异常则 继续读取下一行。
*
* @param exception
* @param context
* @throws Exception
*/
@Override
public void onException(Exception exception, AnalysisContext context) {
log.error("解析失败,但是继续解析下一行:{}", exception.getMessage());
if (exception instanceof ExcelDataConvertException) {
ExcelDataConvertException excelDataConvertException = (ExcelDataConvertException) exception;
log.error("第{}行,第{}列解析异常,数据为:{}", excelDataConvertException.getRowIndex(),
excelDataConvertException.getColumnIndex(), excelDataConvertException.getCellData());
}
}
public List<T> getRows() {
return rows;
}
}
public class EasyExcelUtil {
/**
* 同步无模型读(默认读取sheet0,从第2行开始读)
*
* @param filePath
* @return
*/
public static List<Map<Integer, String>> syncRead(String filePath) {
return EasyExcelFactory.read(filePath).sheet().doReadSync();
}
/**
* 同步无模型读(默认表头占一行,从第2行开始读)
*
* @param filePath
* @param sheetNo sheet页号,从0开始
* @return
*/
public static List<Map<Integer, String>> syncRead(String filePath, Integer sheetNo) {
return EasyExcelFactory.read(filePath).sheet(sheetNo).doReadSync();
}
/**
* 同步无模型读(指定sheet和表头占的行数)
*
* @param inputStream
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return List<Map < colNum, cellValue>>
*/
public static List<Map<Integer, String>> syncRead(InputStream inputStream, Integer sheetNo, Integer headRowNum) {
return EasyExcelFactory.read(inputStream).sheet(sheetNo).headRowNumber(headRowNum).doReadSync();
}
/**
* 同步无模型读(指定sheet和表头占的行数)
*
* @param file
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return List<Map < colNum, cellValue>>
*/
public static List<Map<Integer, String>> syncRead(File file, Integer sheetNo, Integer headRowNum) {
return EasyExcelFactory.read(file).sheet(sheetNo).headRowNumber(headRowNum).doReadSync();
}
/**
* 同步无模型读(指定sheet和表头占的行数)
*
* @param filePath
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return List<Map < colNum, cellValue>>
*/
public static List<Map<Integer, String>> syncRead(String filePath, Integer sheetNo, Integer headRowNum) {
return EasyExcelFactory.read(filePath).sheet(sheetNo).headRowNumber(headRowNum).doReadSync();
}
/**
* 同步按模型读(默认读取sheet0,从第2行开始读)
*
* @param filePath
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @return
*/
public static <T> List<T> syncReadModel(String filePath, Class<T> clazz) {
return EasyExcelFactory.read(filePath).sheet().head(clazz).doReadSync();
}
/**
* 同步按模型读(默认表头占一行,从第2行开始读)
*
* @param filePath
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @return
*/
public static List<T> syncReadModel(String filePath, Class<T> clazz, Integer sheetNo) {
return EasyExcelFactory.read(filePath).sheet(sheetNo).head(clazz).doReadSync();
}
/**
* 同步按模型读(指定sheet和表头占的行数)
*
* @param inputStream
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从1开始(不带表头)
* @return
*/
public static <T> List<T> syncReadModel(InputStream inputStream, Class<T> clazz) {
return syncReadModel(inputStream,clazz,0,1);
}
/**
* 同步按模型读(指定sheet和表头占的行数)
*
* @param inputStream
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static <T> List<T> syncReadModel(InputStream inputStream, Class<T> clazz, Integer sheetNo, Integer headRowNum) {
return EasyExcelFactory.read(inputStream).sheet(sheetNo).headRowNumber(headRowNum).head(clazz).doReadSync();
}
/**
* 同步按模型读(指定sheet和表头占的行数)
*
* @param file
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static <T> List<T> syncReadModel(File file, Class<T> clazz, Integer sheetNo, Integer headRowNum) {
return EasyExcelFactory.read(file).sheet(sheetNo).headRowNumber(headRowNum).head(clazz).doReadSync();
}
/**
* 同步按模型读(指定sheet和表头占的行数)
*
* @param filePath
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static <T> List<T> syncReadModel(String filePath, Class<T> clazz, Integer sheetNo, Integer headRowNum) {
return EasyExcelFactory.read(filePath).sheet(sheetNo).headRowNumber(headRowNum).head(clazz).doReadSync();
}
/**
* 异步无模型读(默认读取sheet0,从第2行开始读)
*
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param filePath 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static void asyncRead(String filePath, AnalysisEventListener<T> excelListener) {
EasyExcelFactory.read(filePath, excelListener).sheet().doRead();
}
/**
* 异步无模型读(默认表头占一行,从第2行开始读)
*
* @param filePath 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param sheetNo sheet页号,从0开始
* @return
*/
public static void asyncRead(String filePath, AnalysisEventListener<T> excelListener, Integer sheetNo) {
EasyExcelFactory.read(filePath, excelListener).sheet(sheetNo).doRead();
}
/**
* 异步无模型读(指定sheet和表头占的行数)
*
* @param inputStream
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static void asyncRead(InputStream inputStream, AnalysisEventListener<T> excelListener, Integer sheetNo, Integer headRowNum) {
EasyExcelFactory.read(inputStream, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
}
/**
* 异步无模型读(指定sheet和表头占的行数)
*
* @param file
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static void asyncRead(File file, AnalysisEventListener<T> excelListener, Integer sheetNo, Integer headRowNum) {
EasyExcelFactory.read(file, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
}
/**
* 异步无模型读(指定sheet和表头占的行数)
*
* @param filePath
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
* @return
*/
public static void asyncRead(String filePath, AnalysisEventListener<T> excelListener, Integer sheetNo, Integer headRowNum) {
EasyExcelFactory.read(filePath, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
}
/**
* 异步按模型读取(默认读取sheet0,从第2行开始读)
*
* @param filePath
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
*/
public static void asyncReadModel(String filePath, AnalysisEventListener<T> excelListener, Class clazz) {
EasyExcelFactory.read(filePath, clazz, excelListener).sheet().doRead();
}
/**
* 异步按模型读取(默认表头占一行,从第2行开始读)
*
* @param filePath
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
*/
public static void asyncReadModel(String filePath, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo) {
EasyExcelFactory.read(filePath, clazz, excelListener).sheet(sheetNo).doRead();
}
/**
* 异步按模型读取
*
* @param inputStream
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
*/
public static void asyncReadModel(InputStream inputStream, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo, Integer headRowNum) {
EasyExcelFactory.read(inputStream, clazz, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
}
/**
* 异步按模型读取
*
* @param file
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
*/
public static void asyncReadModel(File file, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo, Integer headRowNum) {
EasyExcelFactory.read(file, clazz, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
}
/**
* 异步按模型读取
*
* @param filePath
* @param excelListener 监听器,在监听器中可以处理行数据LinkedHashMap,表头数据,异常处理等
* @param clazz 模型的类类型(excel数据会按该类型转换成对象)
* @param sheetNo sheet页号,从0开始
* @param headRowNum 表头占的行数,从0开始(如果要连表头一起读出来则传0)
*/
public static void asyncReadModel(String filePath, AnalysisEventListener<T> excelListener, Class clazz, Integer sheetNo, Integer headRowNum) {
EasyExcelFactory.read(filePath, clazz, excelListener).sheet(sheetNo).headRowNumber(headRowNum).doRead();
}
/**
* 无模板写文件
*
* @param filePath
* @param head 表头数据
* @param data 表内容数据
*/
public static void write(String filePath, List<List<String>> head, List<List<Object>> data) {
EasyExcel.write(filePath).head(head).sheet().doWrite(data);
}
/**
* 无模板写文件
*
* @param filePath
* @param head 表头数据
* @param data 表内容数据
* @param sheetNo sheet页号,从0开始
* @param sheetName sheet名称
*/
public static void write(String filePath, List<List<String>> head, List<List<Object>> data, Integer sheetNo, String sheetName) {
EasyExcel.write(filePath).head(head).sheet(sheetNo, sheetName).doWrite(data);
}
/**
* 根据excel模板文件写入文件
*
* @param filePath
* @param templateFileName
* @param headClazz
* @param data
*/
public static void writeTemplate(String filePath, String templateFileName, Class headClazz, List data) {
EasyExcel.write(filePath, headClazz).withTemplate(templateFileName).sheet().doWrite(data);
}
/**
* 根据excel模板文件写入文件
*
* @param filePath
* @param templateFileName
* @param data
*/
public static void writeTemplate(String filePath, String templateFileName, List data) {
EasyExcel.write(filePath).withTemplate(templateFileName).sheet().doWrite(data);
}
/**
* 按模板写文件
*
* @param filePath
* @param headClazz 表头模板
* @param data 数据
*/
public static void write(String filePath, Class headClazz, List data) {
EasyExcel.write(filePath, headClazz).sheet().doWrite(data);
}
/**
* 按模板写文件
*
* @param filePath
* @param headClazz 表头模板
* @param data 数据
* @param sheetNo sheet页号,从0开始
* @param sheetName sheet名称
*/
public static void write(String filePath, Class headClazz, List data, Integer sheetNo, String sheetName) {
EasyExcel.write(filePath, headClazz).sheet(sheetNo, sheetName).doWrite(data);
}
/**
* 按模板写文件
*
* @param filePath
* @param headClazz 表头模板
* @param data 数据
* @param writeHandler 自定义的处理器,比如设置table样式,设置超链接、单元格下拉框等等功能都可以通过这个实现(需要注册多个则自己通过链式去调用)
* @param sheetNo sheet页号,从0开始
* @param sheetName sheet名称
*/
public static void write(String filePath, Class headClazz, List data, WriteHandler writeHandler, Integer sheetNo, String sheetName) {
EasyExcel.write(filePath, headClazz).registerWriteHandler(writeHandler).sheet(sheetNo, sheetName).doWrite(data);
}
/**
* 按模板写文件(包含某些字段)
*
* @param filePath
* @param headClazz 表头模板
* @param data 数据
* @param includeCols 过滤包含的字段,根据字段名称过滤
* @param sheetNo sheet页号,从0开始
* @param sheetName sheet名称
*/
public static void writeInclude(String filePath, Class headClazz, List data, Set<String> includeCols, Integer sheetNo, String sheetName) {
EasyExcel.write(filePath, headClazz).includeColumnFiledNames(includeCols).sheet(sheetNo, sheetName).doWrite(data);
}
/**
* 按模板写文件(排除某些字段)
*
* @param filePath
* @param headClazz 表头模板
* @param data 数据
* @param excludeCols 过滤排除的字段,根据字段名称过滤
* @param sheetNo sheet页号,从0开始
* @param sheetName sheet名称
*/
public static void writeExclude(String filePath, Class headClazz, List data, Set<String> excludeCols, Integer sheetNo, String sheetName) {
EasyExcel.write(filePath, headClazz).excludeColumnFiledNames(excludeCols).sheet(sheetNo, sheetName).doWrite(data);
}
/**
* 多个sheet页的数据链式写入
* ExcelUtil.writeWithSheets(outputStream)
* .writeModel(ExcelModel.class, excelModelList, "sheetName1")
* .write(headData, data,"sheetName2")
* .finish();
*
* @param outputStream
* @return
*/
public static EasyExcelWriterFactory writeWithSheets(OutputStream outputStream) {
EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(outputStream);
return excelWriter;
}
/**
* 多个sheet页的数据链式写入
* ExcelUtil.writeWithSheets(file)
* .writeModel(ExcelModel.class, excelModelList, "sheetName1")
* .write(headData, data,"sheetName2")
* .finish();
*
* @param file
* @return
*/
public static EasyExcelWriterFactory writeWithSheets(File file) {
EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(file);
return excelWriter;
}
/**
* 多个sheet页的数据链式写入
* ExcelUtil.writeWithSheets(filePath)
* .writeModel(ExcelModel.class, excelModelList, "sheetName1")
* .write(headData, data,"sheetName2")
* .finish();
*
* @param filePath
* @return
*/
public static EasyExcelWriterFactory writeWithSheets(String filePath) {
EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(filePath);
return excelWriter;
}
/**
* 多个sheet页的数据链式写入(失败了会返回一个有部分数据的Excel)
* ExcelUtil.writeWithSheets(response, exportFileName)
* .writeModel(ExcelModel.class, excelModelList, "sheetName1")
* .write(headData, data,"sheetName2")
* .finish();
*
* @param response
* @param exportFileName 导出的文件名称
* @return
*/
public static EasyExcelWriterFactory writeWithSheetsWeb(HttpServletResponse response, String exportFileName) throws IOException {
response.setContentType("application/vnd.ms-excel");
response.setCharacterEncoding("utf-8");
// 这里URLEncoder.encode可以防止中文乱码
String fileName = URLEncoder.encode(exportFileName, "UTF-8");
response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xlsx");
EasyExcelWriterFactory excelWriter = new EasyExcelWriterFactory(response.getOutputStream());
return excelWriter;
}
}
public class EasyExcelWriterFactory {
private int sheetNo = 0;
private ExcelWriter excelWriter = null;
public EasyExcelWriterFactory(OutputStream outputStream) {
excelWriter = EasyExcel.write(outputStream).build();
}
public EasyExcelWriterFactory(File file) {
excelWriter = EasyExcel.write(file).build();
}
public EasyExcelWriterFactory(String filePath) {
excelWriter = EasyExcel.write(filePath).build();
}
/**
* 链式模板表头写入
*
* @param headClazz 表头格式
* @param data 数据 List<ExcelModel> 或者List<List<Object>>
* @return
*/
public EasyExcelWriterFactory writeModel(Class headClazz, List data, String sheetName) {
excelWriter.write(data, EasyExcel.writerSheet(this.sheetNo++, sheetName).head(headClazz).build());
return this;
}
/**
* 链式自定义表头写入
*
* @param head
* @param data 数据 List<ExcelModel> 或者List<List<Object>>
* @param sheetName
* @return
*/
public EasyExcelWriterFactory write(List<List<String>> head, List data, String sheetName) {
excelWriter.write(data, EasyExcel.writerSheet(this.sheetNo++, sheetName).head(head).build());
return this;
}
public void finish() {
excelWriter.finish();
}
}
public class FileUtil {
public static InputStream getResourcesFileInputStream(String fileName) {
return Thread.currentThread().getContextClassLoader().getResourceAsStream("" + fileName);
}
public static String getPath() {
return FileUtil.class.getResource("/").getPath();
}
public static File createNewFile(String pathName) {
File file = new File(getPath() + pathName);
if (file.exists()) {
file.delete();
} else {
if (!file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
}
return file;
}
public static File readFile(String pathName) {
return new File(getPath() + pathName);
}
}
2.使用
@Controller
public class ExcelController {
private static final Logger log = LogManager.getLogger(ExcelController.class);
/**
* 用户导入Excel
*/
@RequestMapping(value = "/importExcel", method = RequestMethod.POST)
@ResponseBody
public CommonResponse<?> importExcel(@RequestParam(value = "uploadFile", required = false) MultipartFile file) {
try {
List<DemoData> excelModelList = EasyExcelUtil.syncReadModel(file.getInputStream(), DemoData.class);
return CommonResponse.success(excelModelList);
} catch (IOException e) {
log.error("Excel导入失败", e);
}
return CommonResponse.failure("失败");
}
/**
* 导出Excel
*/
@RequestMapping(value = "/download")
@ResponseBody
public void writeExcel(HttpServletResponse response) throws IOException {
//初始化模拟数据
List<DemoData> excelModelList = new ArrayList<>();
for (int i = 0; i < 700; i++) {
DemoData excelModel = new DemoData();
excelModel.setString("ihuaben" + i);
excelModel.setDate("2020-1-3");
excelModel.setDoubleData(i + "");
excelModelList.add(excelModel);
}
EasyExcelWriterFactory ihuaben = EasyExcelUtil.writeWithSheetsWeb(response, "ihuaben");
ihuaben.writeModel(DemoData.class, excelModelList, "ihuaben");
ihuaben.finish();
}
/**
* 读取resources下静态模板
*/
@RequestMapping(value = "/staticTemplate")
@ResponseBody
public CommonResponse<?> staticTemplate(HttpServletResponse response) {
String fileName = FileUtil.getPath() + "static" + File.separator + "demo.xlsx";
List<DemoData> excelModelList = EasyExcelUtil.syncReadModel(fileName, DemoData.class);
return CommonResponse.success(excelModelList);
}
}
接口测试

1.importExcel

2.download

3.staticTemplate

