在Spring中通过EasyUI的dialog创建登录界面

来源：互联网发布：js date获取日期编辑：程序博客网时间：2024/05/01 22:23

这里写图片描述

准备工作

EasyUI相关文件都放在WebContent下
将一些必要的Link ，script统一放在一个jsp中，给其他jsp来include

java<script type="text/javascript" src="${pageContext.request.contextPath}/EasyUI/jquery.min.js"></script><script type="text/javascript" src="${pageContext.request.contextPath}/EasyUI/jquery.easyui.min.js"></script><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/EasyUI/themes/default/easyui.css"><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath}/EasyUI/themes/icon.css"><script type="text/javascript" src="${pageContext.request.contextPath}/EasyUI/locale/easyui-lang-zh_CN.js"></script>

后台需要的Util

JSONUtils

将java类转为json数据格式

javapublic abstract class JSONUtils {    private static ObjectMapper objectMapper = new ObjectMapper();    static {        // 设置日期格式化        objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));        // 设置null不序列化        objectMapper.setSerializationInclusion(Include.NON_NULL);    }    private JSONUtils() {    }    public static void writeValue(OutputStream out, Object value) {        try {            objectMapper.writeValue(out, value);        } catch (Exception e) {            throw new RuntimeException(e.toString(), e);        }    }    public static void writeValue(Writer w, Object value) {        try {            objectMapper.writeValue(w, value);        } catch (Exception e) {            throw new RuntimeException(e.toString(), e);        }    }    public static String writeValueAsString(Object arg0) {        try {            return objectMapper.writeValueAsString(arg0);        } catch (Exception e) {            throw new RuntimeException(e.toString(), e);        }    }}

HTMLUtils

将json数据通过response中的writer流输出，返回给Ajax

javapublic class HTMLUtils {    public static void writeJosn(HttpServletResponse response,String jsonStr){        try {            response.setContentType("text/html");            response.setHeader("Pragma", "No-cache");//设置页面不缓存            response.setHeader("Cache-Control", "no-cache");            response.setCharacterEncoding("UTF-8");            PrintWriter out= response.getWriter(); //获取流            out.print(jsonStr);            out.flush();            out.close();        } catch (IOException e) {            e.printStackTrace();        }    }}

前台

java<jsp:include page="/include/include.jsp"/><script type="text/javascript">$(function(){    $("#dig").dialog({        title:"login",        modal:true,  //是否将窗体显示为模式化窗口        collapsible:true, //是否显示可折叠按钮        minimizable:true, //是否显示最小化按钮        buttons:[{            text:"login",            handler:function(){                $.ajax({                    url:"<%=request.getContextPath()%>/login.do",                    type:"post",                    data:$("#loginForm").serialize(),                    dataType:"json",                    success:function(data){                        alert("success"+data.msg);                        if(data.msg=="登录成功"){                            $("#dig").dialog("close");                        }                    },                    error:function(data){                        alert("error"+data.msg);                    }                })            }        }]    });})</script><body>    <div id="dig" style="width:320px;height:180px">        <form id="loginForm">            <table>                <tr>                    <td>用户名：</td><td><input type="text" name="username"></td>                </tr>                <tr>                    <td>密码：</td><td><input type="password" name="pwd"></td>                </tr>            </table>        </form>    </div></body>

后台

java@Controllerpublic class TestHello  {    @RequestMapping("/login")    public void login(String username,String pwd, HttpServletResponse response){        System.out.println(username);        System.out.println(pwd);        Map<String,String> map = new HashMap<String,String>();        map.put("msg","登录成功");        String json = JSONUtils.writeValueAsString(map);  //map对象转为json对象          HTMLUtils.writeJosn(response, json);    }}

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