easyexcel 格式转换器
时间: 2023-10-18 12:25:21 浏览: 244
excel格式转换工具
EasyExcel提供了格式转换器功能,可以将Java数据类型转为Excel数据类型,也可以将Excel数据类型转为Java数据类型。在开发中,可以通过自定义转换器类来实现转换。
首先,在属性上加上转换器类,该类需要实现Converter接口,并指定泛型为要转换的数据类型。例如,如果要将实体类中的自定义数据类型转为Excel中的String类型,可以编写如下代码:
```java
public class AdditionalConfigConverter implements Converter<AdditionalConfig> {
@Override
public String convertToExcelData(AdditionalConfig value) {
// 将自定义类型转为Excel类型的逻辑
}
@Override
public AdditionalConfig convertToJavaData(String value) {
// 将Excel类型转为自定义类型的逻辑
}
}
```
然后,在需要进行转换的地方使用自定义转换器类。例如,可以在导入数据的接口中使用转换器:
```java
@PostMapping("/import")
public R importFile(@RequestPart("file") MultipartFile file) {
try {
EasyExcelListener listener = new EasyExcelListener(DzdaQbztkBcDxsVO.class);
List<DzdaQbztkBcDxsVO> list = EasyExcel.read(file.getInputStream(), DzdaQbztkBcDxsVO.class, listener)
.headRowNumber(1)
.sheet()
.doReadSync();
if (ListUtils.isNotEmpty(listener.getErrors())) {
return R.failed(listener.getErrors(), "导入excel校验失败");
}
return R.ok(dzdaQbztkBcDxsService.saveBatch(dzdaQbztkBcDxsUtil.convertVOList2Entiy(list)));
} catch (IOException e) {
e.printStackTrace();
}
return R.failed();
}
```
同样地,在导出数据的接口中也可以使用转换器:
```java
@GetMapping("/export")
public void export(@RequestBody(required = false) DzdaQbztkBcDxsVO dzdaQbztkBcDxsVO, HttpServletResponse httpServletResponse) {
List<DzdaQbztkBcDxsVO> list = dzdaQbztkBcDxsUtil.convertEntityList2VO(dzdaQbztkBcDxsService.list(WrapperUtil.getQueryWrapper(dzdaQbztkBcDxsVO, DzdaQbztkBcDxs.class)));
ExportEasyExcelUtil.export(httpServletResponse, "Export", null, DzdaQbztkBcDxsVO.class, list);
}
```
这样,通过自定义转换器类并在相应的接口中使用,就可以实现EasyExcel的格式转换器功能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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