layui上传图片详解（附代码）
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
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