版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/u013219624/article/details/83313977
1.添加Maven依赖
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-base</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-web</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>cn.afterturn</groupId>
<artifactId>easypoi-annotation</artifactId>
<version>3.2.0</version>
</dependency>
<!-- lombok可使代码更简洁 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<scope>provided</scope>
</dependency>
2.自定义EasyPoiUtils工具类
public final class EasyPoiUtils {
private EasyPoiUtils() {}
private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) {
try {
response.setCharacterEncoding("UTF-8");
response.setHeader("content-Type", "application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
workbook.write(response.getOutputStream());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static<T> void defaultExport(List<T> dataList, Class<?> clz, String fileName, HttpServletResponse response, ExportParams exportParams) {
Workbook workbook = ExcelExportUtil.exportExcel(exportParams, clz, dataList);
if (workbook != null) {
downLoadExcel(fileName, response, workbook);
}
}
public static<T> void exportExcel(List<T> dataList, String title, String sheetName, Class<?> clz, String fileName, boolean isCreateHeader, HttpServletResponse response) {
ExportParams exportParams = new ExportParams(title, sheetName);
exportParams.setCreateHeadRows(isCreateHeader);
defaultExport(dataList, clz, fileName, response, exportParams);
}
public static<T> void exportExcel(List<T> dataList, String title, String sheetName, Class<?> clz, String fileName, HttpServletResponse response) {
defaultExport(dataList, clz, fileName, response, new ExportParams(title, sheetName));
}
private static void defaultExport(List<Map<String, Object>> dataList, String fileName, HttpServletResponse response) {
Workbook workbook = ExcelExportUtil.exportExcel(dataList, ExcelType.HSSF);
if (workbook != null) {
downLoadExcel(fileName, response, workbook);
}
}
public static void exportExcel(List<Map<String, Object>> dataList, String fileName, HttpServletResponse response) {
defaultExport(dataList, fileName, response);
}
public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> clz) {
if (StringUtils.isBlank(filePath)) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
try {
return ExcelImportUtil.importExcel(new File(filePath), clz, params);
} catch (Exception e) {
throw new RuntimeException(e.getMessage());
}
}
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> clz) {
if (file == null) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
try {
return ExcelImportUtil.importExcel(file.getInputStream(), clz, params);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static List<ExportUser> importExcel(MultipartFile file, Class<ExportUser> clz) {
if (file == null) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(0);
params.setHeadRows(1);
try {
return ExcelImportUtil.importExcel(file.getInputStream(), clz, params);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
3.Excel导入
@Data
@NoArgsConstructor
@AllArgsConstructor
public class ExportUser {
@Excel(name = "用户名", width = 10)
private String username;
@Excel(name = "创建时间", format = "yyyy-MM-dd", width = 15)
private Date createTime;
}
@RequestMapping("/import/users")
@ResponseBody
public List<ExportUser> importUsers(@RequestParam MultipartFile file) {
return EasyPoiUtils.importExcel(file, ExportUser.class);
}
4.Excel导出
@RequestMapping(value = "/export/users", method = RequestMethod.GET)
public void exportUsers(HttpServletResponse response) {
List<ExportUser> userList = getUserList();
EasyPoiUtils.exportExcel(userList, "用户列表", "用户报表", ExportUser.class, "用户明细报表.xls", response);
}
private List<ExportUser> getUserList() {
List<ExportUser> userList = new ArrayList<>();
userList.add(new ExportUser("tom", new Date()));
userList.add(new ExportUser("jack", new Date()));
userList.add(new ExportUser("123", new Date()));
return userList;
}
5.测试
导出:http://localhost:8080/demo/export/users
导入:http://localhost:8080/demo/import/users (用postman或者curl测试吧)
源码 https://gitee.com/jsjack_wang/springboot-demo dev-easypoi分支