dwr与后台老板数据库连接测试成功
日期：2014-05-16 浏览次数：20440 次
dwr与后台数据库连接测试成功
配置web.xml注意要让服务器一启动就让它加载
<servlet>
<servlet-name>dwr</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dwr</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
配置dwr.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://www.getahead.ltd.uk/dwr/dwr20.dtd">
<dwr>
<allow>
<create creator="new" javascript="lushuifa">
<param name="class" value="com.eams.util.DataUtil" />
</create>
</allow>
</dwr>
后台代码：
/**
* 查看超级管理员信息，利用ajax的方式
* @return
*/
public String getSuperAdmin(){
List<SuperAdmin> cateList = SaService.getInstence().SuperAdminList();
StringBuffer sb = new StringBuffer("[");
for (SuperAdmin superAdmin: cateList) {
sb.append("{\"id\":\"").append(superAdmin.getSaid()).append("\",\"name\":\"").append(superAdmin.getTrueName()).append("\"},");
}
if(cateList.size()>0)
sb.deleteCharAt(sb.lastIndexOf(","));
sb.append("]");
System.out.println("拼合后的String:"+sb);
return sb.toString();
}
js处理文件：
function getAdmin(){
alert("fasfdasdddddddd");
lushuifa.getSuperAdmin(getAdminCallback);
}
function getAdminCallback(data){
var admin = eval(data);
alert("数据的长度为："+admin.length);
var content = "asfasdf <br/>";
for(var j=0;j<admin.length;j++){
content+="管理员的id号为："+admin[j].id+"管理员的名字为："+admin[j].name+"<br/>";
}
alert("之后："+content)
DWRUtil.setValue("adminvalue",content);
}
页面处理：
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>测试页面</title>
<script type='text/javascript' src='dwr/util.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/interface/lushuifa.js'></script>
<script type="text/javascript" charset="gbk" src="js/dataUtil.js"></script>
</head>
<body>
看下面的数据<br />
<div id="adminvalue" style="border: 1px red solid">
这里显示数据
</div>
<button onclick="getAdmin()" >点我查看</button>
</body>
</html>
本代码仅供参考有很多不足的地方，大家[color=brown][/color][size=medium]多多
配置web.xml注意要让服务器一启动就让它加载
<servlet>
<servlet-name>dwr</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dwr</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
配置dwr.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://www.getahead.ltd.uk/dwr/dwr20.dtd">
<dwr>
<allow>
<create creator="new" javascript="lushuifa">
<param name="class" value="com.eams.util.DataUtil" />
</create>
</allow>
</dwr>
后台代码：
/**
* 查看超级管理员信息，利用ajax的方式
* @return
*/
public String getSuperAdmin(){
List<SuperAdmin> cateList = SaService.getInstence().SuperAdminList();
StringBuffer sb = new StringBuffer("[");
for (SuperAdmin superAdmin: cateList) {
sb.append("{\"id\":\"").append(superAdmin.getSaid()).append("\",\"name\":\"").append(superAdmin.getTrueName()).append("\"},");
}
if(cateList.size()>0)
sb.deleteCharAt(sb.lastIndexOf(","));
sb.append("]");
System.out.println("拼合后的String:"+sb);
return sb.toString();
}
js处理文件：
function getAdmin(){
alert("fasfdasdddddddd");
lushuifa.getSuperAdmin(getAdminCallback);
}
function getAdminCallback(data){
var admin = eval(data);
alert("数据的长度为："+admin.length);
var content = "asfasdf <br/>";
for(var j=0;j<admin.length;j++){
content+="管理员的id号为："+admin[j].id+"管理员的名字为："+admin[j].name+"<br/>";
}
alert("之后："+content)
DWRUtil.setValue("adminvalue",content);
}
页面处理：
<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<title>测试页面</title>
<script type='text/javascript' src='dwr/util.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/interface/lushuifa.js'></script>
<script type="text/javascript" charset="gbk" src="js/dataUtil.js"></script>
</head>
<body>
看下面的数据<br />
<div id="adminvalue" style="border: 1px red solid">
这里显示数据
</div>
<button onclick="getAdmin()" >点我查看</button>
</body>
</html>
本代码仅供参考有很多不足的地方，大家[color=brown][/color][size=medium]多多
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