1、Maven引入所需的 jar 包(或自行下载)
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
2、配置 spring 文件
<!-- 多部分文件上传 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"></property>
<property name="maxUploadSize" value="10485760000"></property>
<property name="maxInMemorySize" value="40960"></property>
</bean>
3、form 添加 enctype="multipart/form-data"
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h2>上传多个文件 实例</h2>
<form action="/upload/filesUpload" method="post" enctype="multipart/form-data">
<p>选择文件:<input type="file" name="files"></p>
<p>选择文件:<input type="file" name="files"></p>
<p><input type="submit" value="提交"></p>
</form>
</body>
</html>
5、controller 部分
import java.io.File;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
@Controller
@RequestMapping("/upload")
public class UploadController {
//通过Spring的autowired注解获取spring默认配置的request
/***
* 保存文件
* @param file
* @return
*/
private boolean saveFile(MultipartFile file, String path) {
// 判断文件是否为空
if (!file.isEmpty()) {
try {
File filepath = new File(path);
if (!filepath.exists())
filepath.mkdirs();
// 文件保存路径
String savePath = path + file.getOriginalFilename();
// 转存文件
file.transferTo(new File(savePath));
return true;
} catch (Exception e) {
e.printStackTrace();
}
}
return false;
}
@RequestMapping("/filesUpload")
public String filesUpload(@RequestParam("files") MultipartFile[] files) {
String path = "E:/upload/";
//判断file数组不能为空并且长度大于0
if(files!=null&&files.length>0){
//循环获取file数组中得文件
for(int i = 0;i<files.length;i++){
MultipartFile file = files[i];
//保存文件
saveFile(file, path);
}
}
// 重定向
return "redirect:/list.html";
}
}
运行如下:

来源:https://www.cnblogs.com/linnuo/p/7805334.html