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：
