layui上传图片详解（附代码）

前端  /  管理员 发布于 5年前   430

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

1.jpg

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">&#xe67c;</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

2.jpg

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