spring mvc 中不存在必需的 MultipartFile 参数“文件" [英] Required MultipartFile parameter 'file' is not present in spring mvc
本文介绍了spring mvc 中不存在必需的 MultipartFile 参数“文件"的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试添加将图片上传到我的 spring mvc 应用程序的功能.
I am trying to add feature of uploading picture to my spring mvc application.
jsp部分:
...
<form method="POST" action="uploadImage" enctype="multipart/form-data">
<div class="load-line">
<input type="file" class="file"/>
<input type="submit" value="Upload">
...
配置:
...
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
...
控制器:
@RequestMapping(value="/member/createCompany/uploadImage", method=RequestMethod.POST)
public @ResponseBody String handleFileUpload(
@RequestParam("file") MultipartFile file){
String name = "image_name";
if (!file.isEmpty()) {
try {
byte[] bytes = file.getBytes();
BufferedOutputStream stream =
new BufferedOutputStream(new FileOutputStream(new File(name + "-uploaded")));
stream.write(bytes);
stream.close();
return "You successfully uploaded " + name + " into " + name + "-uploaded !";
} catch (Exception e) {
return "You failed to upload " + name + " => " + e.getMessage();
}
} else {
return "You failed to upload " + name + " because the file was empty.";
}
}
选择图片后,我点击上传并看到错误消息:
After I selected picture I click upload and see error message:
HTTP Status 400 - Required MultipartFile parameter 'file' is not present
我做错了什么?
推荐答案
您没有指定 name
属性,@RequestParam("textFile")
需要名称,
You have not specified the name
attribute , @RequestParam("textFile")
requires name ,
<input type="file" class="file" name="textFile"/>
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