======问题已解决，是mock模式导致的问题，关闭mock即可
src/mock中index.js文件中
把const options = {mock: true};
修改为：
const options = {mock: false};
一、该问题的重现步骤是什么？
1. 1.9号下载最新的前端2.3.5版本，把之前版本中导出功能迁移过，同时开启2个前端调用最新的2.3版本后台接口，老的版本正常导出数据，新的2.3.5 下载文件无法打开，监控显示乱码 ，请问这新升级的版本和老板本有设置编码格式吗？
2. 通过easypoi实现功能导出：
后台UserController增加了一个导出方法
@RequestMapping(value="/exportexcel",method = RequestMethod.GET)
@GetMapping("/exportexcel")
public void exportExcel(HttpServletResponse response, User user){
System.out.println(user);
List<User> userList = userService.list(Condition.getQueryWrapper(user));
try {
List<UserVO> userVOList = new ArrayList<UserVO>();
for(User u : userList){
UserVO userVO = UserWrapper.build().entityVO(u);
userVOList.add(userVO);
}
ExcelUtils.exportExcel(userVOList,"员工信息表", "员工信息", UserVO.class, "员工信息", response);
}
catch (Exception e) {
e.getMessage();
}
}
实体类：
@Excel(name = "手机号码",orderNum = "30",width = 20)
private String phone;3.ExcelUtils实现类：
import cn.afterturn.easypoi.entity.vo.NormalExcelConstants;
import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import cn.afterturn.easypoi.view.PoiBaseView;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.ui.ModelMap;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URLEncoder;
import java.util.*;
public class ExcelUtils {
/**
* excel 导出
*
* @param list 数据
* @param title 标题
* @param sheetName sheet名称
* @param pojoClass pojo类型
* @param fileName 文件名称
* @param isCreateHeader 是否创建表头
* @param response
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, boolean isCreateHeader, HttpServletResponse response) throws IOException {
ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);
exportParams.setCreateHeadRows(isCreateHeader);
defaultExport(list, pojoClass, fileName, response, exportParams);
}
/**
* excel 导出
*
* @param list 数据
* @param title 标题
* @param sheetName sheet名称
* @param pojoClass pojo类型
* @param fileName 文件名称
* @param response
*/
public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,
HttpServletResponse response) throws IOException {
defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName, ExcelType.XSSF));
}
/**
* excel 导出
*
* @param list 数据
* @param pojoClass pojo类型
* @param fileName 文件名称
* @param response
* @param exportParams 导出参数
*/
public static void exportExcel(List<?> list, Class<?> pojoClass, String fileName, ExportParams exportParams, HttpServletResponse response) throws IOException {
defaultExport(list, pojoClass, fileName, response, exportParams);
}
/**
* excel 导出
*
* @param list 数据
* @param fileName 文件名称
* @param response
*/
public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {
defaultExport(list, fileName, response);
}
/**
* 默认的 excel 导出
*
* @param list 数据
* @param pojoClass pojo类型
* @param fileName 文件名称
* @param response
* @param exportParams 导出参数
*/
private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) throws IOException {
Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
downLoadExcel(fileName, response, workbook);
}
/**
* 默认的 excel 导出
*
* @param list 数据
* @param fileName 文件名称
* @param response
*/
private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {
Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
downLoadExcel(fileName, response, workbook);
}
/**
* 下载
*
* @param fileName 文件名称
* @param response
* @param workbook excel数据
*/
private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) throws IOException {
try {
response.setCharacterEncoding("UTF-8");
response.setHeader("content-Type", "application/vnd.ms-excel");
// response.setHeader("content-Type", "application/octet-stream");
String excelFileName=URLEncoder.encode(fileName + "." + ExcelTypeEnum.XLSX.getValue(), "UTF-8");
response.setHeader("Content-Disposition", "attachment;filename=" + excelFileName);
response.setHeader("responseType","blob");
OutputStream output = response.getOutputStream();
BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
workbook.write(bufferedOutPut);
bufferedOutPut.flush();
bufferedOutPut.close();
output.close();
//workbook.write(response.getOutputStream());
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
/**
* excel 导入
*
* @param filePath excel文件路径
* @param titleRows 标题行
* @param headerRows 表头行
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
if (StringUtils.isBlank(filePath)) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
params.setNeedSave(true);
//params.setSaveUrl("/excel/");
try {
return ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
} catch (NoSuchElementException e) {
throw new IOException("模板不能为空");
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
/**
* excel 导入
*
* @param file excel文件
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(MultipartFile file, Class<T> pojoClass) throws IOException {
return importExcel(file, 1, 1, pojoClass);
}
/**
* excel 导入
*
* @param file excel文件
* @param titleRows 标题行
* @param headerRows 表头行
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
return importExcel(file, titleRows, headerRows, false, pojoClass);
}
/**
* excel 导入
*
* @param file 上传的文件
* @param titleRows 标题行
* @param headerRows 表头行
* @param needVerfiy 是否检验excel内容
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {
if (file == null) {
return null;
}
try {
return importExcel(file.getInputStream(), titleRows, headerRows, needVerfiy, pojoClass);
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
/**
* excel 导入
*
* @param inputStream 文件输入流
* @param titleRows 标题行
* @param headerRows 表头行
* @param needVerfiy 是否检验excel内容
* @param pojoClass pojo类型
* @param <T>
* @return
*/
public static <T> List<T> importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {
if (inputStream == null) {
return null;
}
ImportParams params = new ImportParams();
params.setTitleRows(titleRows);
params.setHeadRows(headerRows);
params.setSaveUrl("/excel/");
params.setNeedSave(true);
//params.setNeedVerfiy(needVerfiy);
params.setNeedVerify(needVerfiy);
try {
return ExcelImportUtil.importExcel(inputStream, pojoClass, params);
} catch (NoSuchElementException e) {
throw new IOException("excel文件不能为空");
} catch (Exception e) {
throw new IOException(e.getMessage());
}
}
public static void downloadByPoiBaseView(List<?> list,Class<?> pojoClass, HttpServletRequest request,
HttpServletResponse response) {
ModelMap map = new ModelMap();
ExportParams params = new ExportParams("员工资料", "员工资料", ExcelType.XSSF);
//params.setFreezeCol(2);
map.put(NormalExcelConstants.DATA_LIST, list);
map.put(NormalExcelConstants.CLASS, pojoClass);
map.put(NormalExcelConstants.PARAMS, params);
PoiBaseView.render(map, request, response, NormalExcelConstants.EASYPOI_EXCEL_VIEW);
}
/**
* Excel 类型枚举
*/
enum ExcelTypeEnum {
XLS("xls"), XLSX("xlsx");
private String value;
ExcelTypeEnum(String value) {
this.value = value;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
}
}4、前端VUE代码如下：
<el-button type="primary"
size="small"
plain
icon="el-icon-download"
@click="handleDownLoad">导出
</el-button><el-button type="primary"
size="small"
plain
icon="el-icon-download"
@click="handleDownLoad">导出
</el-button>
downloadfile(res) {
console.log('下载文件函数开始');
console.log(res);
var blob=new Blob([res.data]);
var contentDisposition = res.headers['content-disposition']; //从response的headers中获取filename, 后端response.setHeader("Content-disposition", "attachment; filename=xxxx.docx") 设置的文件名;
var patt = new RegExp("filename=([^;]+\\.[^\\.;]+);*");
var result = patt.exec(contentDisposition);
var filename = result[1];
var downloadElement = document.createElement('a');
var href = window.URL.createObjectURL(blob); //创建下载的链接
console.log('href--->'+href);
var reg = /^["](.*)["]$/g;
downloadElement.style.display = 'none';
downloadElement.href = href;
downloadElement.download = decodeURI(filename.replace(reg,"$1")); //下载后文件名
document.body.appendChild(downloadElement);
downloadElement.click(); //点击下载
document.body.removeChild(downloadElement); //下载完成移除元素
window.URL.revokeObjectURL(href); //释放掉blob对象
},
handleDownLoad(params = {}) {
this.$confirm("确定将选择数据导出成EXCEL文件?", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning"
})
.then(() => {
return userDownLoad(Object.assign(params, this.query)).then((res)=>{
console.log('回调开始............'+res);
this.downloadfile(res);
});
}).catch(() => {
console.log('取消下载............');
});
},
调用js方法：
export const userDownLoad = (params) => {
return request({
url: '/api/blade-user/exportexcel',
method: 'get',
params: {
...params,
},
responseType: 'blob'
})
}二、你期待的结果是什么？实际看到的又是什么？
期望显示如下图：
实际看到结果：
三、你正在使用的是什么产品，什么版本？在什么操作系统上？
正在使用最新版本：企业版2.3，saber：2.3.5；操作系统：window10
四、请提供详细的错误堆栈信息，这很重要。
错误信息如上图展示实际看到结果
五、若有更多详细信息，请在下面提供。
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