为什么80%的码农都做不了架构师？>>>
首先利用Maven引入jar包：
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency>
/**
* 配置文件上传解析器
* 非Servlet 3.0的容器或者容器不支持StandardServletMultipartResolver用CommonsMultipartResolver替代
* 因为自己用的tomcat 7.0,所以用CommonsMultipartResolver
* @return
* @throws IOException
*/
@Bean
public MultipartResolver multipartResolver() throws IOException{
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
multipartResolver.setDefaultEncoding("UTF-8");
//设置临时文件路径,不设置的话这个路径就是Servlet容器的临时目录,如:E:\apache-tomcat-7.0.70\work\Catalina\localhost\spittr
multipartResolver.setUploadTempDir(new FileSystemResource("/tmp/spittr/uploads"));
//设置所有大小的文件都会写入到磁盘中
multipartResolver.setMaxInMemorySize(0);
//设置最大文件上传大小2M
multipartResolver.setMaxUploadSize(2097152);
return multipartResolver;
}
form表单代码：
<form id="testfile" name="testfile" enctype="multipart/form-data" action='<c:url value="testFile"></c:url>' method="post">
<label for="name">Name:</label>
<input type="text" name="name" value="myName"/>
<br />
<label for="testPicture">Picture:</label>
<input type="file" name="testPicture" accept="image/jpeg,image/png,image/gif"/>
<br />
<input type="submit" value="submit"/>
</form>
controller 代码：
//文件上传
@RequestMapping(value="/testFile",method=GET)
public String toTestFile(){
return "/web/testUploadForm";
}
@RequestMapping(value="/testFile",method=POST)
public String testFile(
@Valid User user,Errors errors,
@RequestParam("testPicture") MultipartFile testPicture
) throws IllegalStateException, IOException{
String name = user.getName();
System.out.println(name);
if(errors.hasErrors()){
System.out.println("errors:"+errors.toString());
}
if(testPicture != null){
System.out.println("OriginalFilename:"+testPicture.getOriginalFilename());
String location = "/tmp/spittr/uploads/"+testPicture.getOriginalFilename();
testPicture.transferTo(new File(location));
user.setPicturePath(location);
}
System.out.println(user.getPicturePath());
return "/web/testUploadForm";
}
资料参考：《Spring实战（第4版）》
/selfly/article/337
