上传头像，layui上传图片

layui上传与bootstrap上传相似，只是不需要下插件，

layui自带的已够用 先看一下前台界面，这里是用到的上传头像

先点击开始上传，头像上传至服务器中，

返回json添加至form表单中，与其他数据一起提交

先看一下jsp界面

 <%@ page language="java" contentType="text/html; charset=UTF-8"
     pageEncoding="UTF-8"%>
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>个人资料</title>
 <link href="${pageContext.request.contextPath }/js/layui/css/layui.css"
     rel="stylesheet" />
 <script src="${pageContext.request.contextPath }/js/layui/layui.js"
     charset="utf-8"></script>
 <script src="${pageContext.request.contextPath }/js/jquery-1.8.3.js"></script>
 <script type="text/javascript">
         layui.use('upload',function(){
             var upload = layui.upload;
             upload.render({
                 elem: '#fileBtn'
                 ,url: '../updatePersonalById.do'
                 ,accept: 'file'
                 ,auto: false
                 ,bindAction: '#uploadBtn'
                 ,done: function(res){
                     alert(res.data.src);
                     $("[name=userImage]").val(res.data.src);
                 }
             });
         });
     </script>

 </head>
 <body>
     <form class="layui-form" action="../updatePersonalByIdSuccess.do" method="post" charset="utf-8" target="_parent">
          <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">编号</label>
             <div class="layui-input-block">
               <input type="text" name="userId" required  lay-verify="required" value="${ui.userId }" autocomplete="off" readonly="readonly" class="layui-input">
             </div>
           </div>
            <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">登录名</label>
             <div class="layui-input-block">
               <input type="text" name="userName" required  lay-verify="required" value="${ui.userName }" autocomplete="off" readonly="readonly" class="layui-input">
             </div>
           </div>
            <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">密码</label>
             <div class="layui-input-block">
               <input type="password" name="userPwd" required  lay-verify="required" value="${ui.userPwd }" autocomplete="off" class="layui-input">
             </div>
           </div>
           <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">确认密码</label>
             <div class="layui-input-block">
               <input type="password" name="reuserPwd" required  lay-verify="required" value="${ui.userPwd }" autocomplete="off" class="layui-input">
             </div>
           </div>
            <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">真实姓名</label>
             <div class="layui-input-block">
               <input type="text" name="userrealName" required  lay-verify="required" value="${ui.userrealName }" autocomplete="off" class="layui-input">
             </div>
           </div>
            <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">电话</label>
             <div class="layui-input-block">
               <input type="text" name="userPhone" required  lay-verify="required" value="${ui.userPhone }" autocomplete="off" class="layui-input">
             </div>
           </div>
            <div class="layui-form-item" style="margin-top: 20px;">
             <label class="layui-form-label">地址</label>
             <div class="layui-input-block">
               <input type="text" name="userAds" required  lay-verify="required" value="${ui.userAds }" autocomplete="off" class="layui-input">
             </div>
           </div>
           <div class="layui-upload">
                 <label class="layui-form-label">头像:</label>
                 <div class="layui-upload layui-input-block">
                     <input type="hidden" name="userImage" value="${ui.userImage }" required lay-verify="required" />
                     <button type="button" class="layui-btn layui-btn-primary" id="fileBtn"><i class="layui-icon"></i>选择文件</button>
                     <button type="button" class="layui-btn layui-btn-warm" id="uploadBtn">开始上传</button>
                 </div>
             </div>
              <div class="layui-form-item" style="margin-top: 20px;">
                   <div class="layui-input-block">
                   <button class="layui-btn" id="btn1" lay-submit lay-filter="formDemo">提交</button>
                   <button type="reset" class="layui-btn layui-btn-primary">重置</button>
                 </div>
              </div>

     </form>
 </body>
 </html>

与Controller交互的.do

 package com.supermanager.controller;

 import java.io.File;
 import java.io.IOException;
 import java.util.Date;
 import java.util.List;
 import java.util.Random;

 import javax.annotation.Resource;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpSession;

 import org.springframework.context.annotation.Scope;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.ModelAttribute;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.multipart.MultipartFile;

 import com.supermanager.entity.LogsInfo;
 import com.supermanager.entity.RoleInfo;
 import com.supermanager.entity.StoragesInfo;
 import com.supermanager.entity.UserInfo;
 import com.supermanager.service.LogsService;
 import com.supermanager.service.RoleInfoService;
 import com.supermanager.service.StoragesService;
 import com.supermanager.service.UserInfoService;

 import net.sf.json.JSONArray;

 @Controller
 @Scope("prototype")
 public class UserInfoController {

     @Resource
     private UserInfoService userInfoService;
     @Resource
     private LogsService logService;
     @Resource
     private RoleInfoService roleInfoService;
     @Resource
     private StoragesService storagesService;

     /**
      * 修改个人资料
      * @param session
      * @param file
      * @param ui
      * @return
      * @throws IOException
      * @throws IllegalStateException
      */
     @RequestMapping(value="updatePersonalById")
     public @ResponseBody String updatePersonal(@RequestParam("file") MultipartFile file,@ModelAttribute UserInfo ui,HttpServletRequest request) throws IllegalStateException, IOException{
         String oldName = file.getOriginalFilename();
         String path = request.getServletContext().getRealPath("/upload/");
         String fileName = changeName(oldName);
         String rappendix = "upload/" + fileName;
         fileName = path + "/" + fileName;
         File file1 = new File(fileName);
         file.transferTo(file1);
         String str = "{\"code\": 0,\"msg\": \"\",\"data\": {\"src\":\"" + rappendix + "\"}}";
         return str;
     }
     public static String changeName(String oldName){
         Random r = new Random();
         Date d = new Date();
         String newName = oldName.substring(oldName.indexOf('.'));
         newName = r.nextInt(99999999) + d.getTime() + newName;
         return newName;
     }
     @RequestMapping(value="updatePersonalByIdSuccess")
     public  String updatePersonalByIdSuccess(@ModelAttribute UserInfo ui){
         UserInfo uif = userInfoService.FindUserByUserId(ui.getUserId());
         ui.setRoleId(uif.getRoleId());
         ui.setUserSex(uif.getUserSex());
         ui.setUserAge(uif.getUserAge());
         int a = userInfoService.Update(ui);
         if(a!=0){
             return "redirect:exitSystem.do";
         }
         return "error";
     }

 }

 上传成功之后的效果如图