今天遇到一个上传文件遇到的问题，在IE7和8下面会在上传完成后，弹出下载框。
查到的原因是返回值类型是json，返回头部content-type是：application/json，需要更改其返回的信息头为text/html。
还有一个问题是，返回类型是text/plain时，返回的值会被<pre></pre>标签包起来，影响前端解析。
方法一：
@RequestMapping(value = "/excelUploadtest", method = RequestMethod.POST)
// @ResponseBody
public void excelUploadtest(@RequestParam("file") MultipartFile file, @RequestParam("fileName") String fileName,
HttpServletResponse response) throws IOException {
response.setContentType("text/html;charset=utf-8");
response.getWriter().write("{status:1,msg:'" + "恭喜您，上传成功！" + "'}");
return;
}
方法二：
@RequestMapping(value = "add.do")
public ResponseEntity<?> add(HttpServletRequest request) {
HttpHeaders headers = new HttpHeaders();
MediaType mediaType = new MediaType("text", "html", Charset.forName("utf-8"));
headers.setContentType(mediaType);
return new ResponseEntity<Map<String, Object>>("msg", headers, HttpStatus.OK);
}
@RequestMapping(value = "/excelUpload", method = RequestMethod.POST)
public ResponseEntity<JsonMessage> excelUpload(@RequestParam("file") MultipartFile file, @RequestParam("fileName") String fileName,
HttpServletResponse response) throws IOException {
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.TEXT_HTML);
ResponseEntity<JsonMessage> responseEntity = new ResponseEntity<JsonMessage>(new JsonMessage("无法读取上传的Excel文件，请重试。"),headers,HttpStatus.OK);
Workbook wb = null;
if (fileName.endsWith(".xls")) {
try {
wb = new HSSFWorkbook(file.getInputStream());
} catch (Exception e) {
return responseEntity;
}
} else if (fileName.endsWith(".xlsx")) {
try {
wb = new XSSFWorkbook(file.getInputStream());
} catch (Exception e) {
return responseEntity;
}
} else {
return responseEntity;
}
// 该工具类仅仅负责解析、数据绑定（含类型转换）
// TODO 业务值判断（存在性判断，唯一性判断等）
// 返回错误画面
Integer errorCount = errorResultList.size();
if (errorCount > 0) {
JsonMessage jsonMessage = new JsonMessage();
jsonMessage.setResult(errorResultList);
jsonMessage.setErrorMsg("您有<em class='red'>" + errorCount + "</em>条错误信息，上传失败！请修改模板后继续上传");
jsonMessage.setStatus(JsonMessage.STATUS_FAIL);
return new ResponseEntity<JsonMessage>(jsonMessage, headers, HttpStatus.OK);
}
List<Medicine> medicines = BeanMapper.mapList(medicineVOs, Medicine.class);
medicineService.batchInsertMedicines(medicines);
JsonMessage jsonMessage = new JsonMessage();
jsonMessage.setMsg("恭喜您，上传成功！");
jsonMessage.setStatus(JsonMessage.STATUS_SUCCESS);
return new ResponseEntity<JsonMessage>(jsonMessage, headers, HttpStatus.OK);
}