SpringMvc实现图片上传

首先是设置一下tomcat的虚拟路径，有两种方法（以在C:/upfile/为例）

• 第一种是在tomcat的bin目录下的server.xml添加一句

< Context docBase=“C:/upfile/” path="/upload" reloadable=“false”/>
/upload就是虚拟路径，在下面的文件可以在浏览器localhost：8080 /upload/。。。访问到

• 第二种是在idea下的简单设置，如下
• 

访问localhost:8080/upfile/404.jpg

编写一个简单的文件上传页面uploadPictureJsp.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/10/23
  Time: 13:48
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    



    
        
    
    
    

关于enctype问题可以看这里

然后就是控制器类uploadFile，放在/uploadPicture下

需要导入两个包

package uploadPicture;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.UUID;

/**
 * Created by Administrator on 2018/10/23.
 */
@Controller
public class uploadFile {

    @RequestMapping("/upfile.do")
    public String upfile(Model model, HttpServletRequest request, MultipartFile picture)
            throws IOException {
//        String picrureName=request.getParameter("picture");
        request.setAttribute("picture",picture.getOriginalFilename());
        String picName= UUID.randomUUID().toString();
        String oriName=picture.getOriginalFilename();
        String extName=oriName.substring(oriName.lastIndexOf("."));

        picture.transferTo(new File("C:/upfile1/"+picName+extName));
        System.out.println(request.getParameter("picture"));
        return "forward:/uploadPictureJsp.jsp";
    }
}

需要在springmvc的配置文件demo1.xml配置一下

ok，简单的上传文件的demo完成了