问题遇到的现象和发生背景
浏览器下载文件时,能够下载成功,但是页面会跳红叉,功能可以正常实现;
用代码块功能插入代码,请勿粘贴截图
//以下是controller层代码
@ApiOperation(value = "导出ppt",response = ApprovalPdfDTO.class)
@RequestMapping(path = "/exportPpt",produces="application/json",method = {RequestMethod.GET})
public void exportPdf(@RequestParam(value = "storeId",required = true) String storeId,HttpServletResponse response) throws Exception {
opportunityPointPDFService.exportPpt(storeId,response);
}
//以下是service层代码
try {
String encodedFileName = URLEncoder.encode(fileName + ".pptx", "utf-8");
response.reset();
response.setHeader("Content-disposition", "attachment;filename="+encodedFileName+"");
response.setContentType("application/vnd.ms-powerpoint;charset=UTF-8");
response.flushBuffer();
ppt.write(response.getOutputStream());
System.out.println("download PPT successfully");
} catch (UnsupportedEncodingException e) {
log.error("download PPT exception");
e.printStackTrace();
}
运行结果及报错内容
之前controller给了返回值,后台会报No converter for X with preset Content-Type ‘application/vnd.ms-excel;charset=utf-8‘错误,之后将返回值改为了void,后台不再报错,但是页面中点击下载按钮时,下载成功的那一刻页面会跳出红叉;
我的解答思路和尝试过的方法
将response.setContentType("application/vnd.ms-powerpoint;charset=UTF-8");修改为response.setContentType("application/json;charset=utf-8");
但是问题依旧存在;
我想要达到的结果
文件下载成功时,页面不会跳出红叉;