dwr与spring一起使用的方法
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文章内容摘抄至http://www.cnblogs.com/linjiqin/archive/2011/03/28/1998125.html
<?xml version="1.0" encoding="UTF-8"?><web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <!-- Spring上下文 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:resource/app*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 配置DWR前端控制器 --> <servlet> <servlet-name>dwrServlet</servlet-name> <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class> <!-- 指定配置文件 --> <init-param> <param-name>config</param-name> <!-- 如果有多个用","分开 --> <param-value> /WEB-INF/classes/config/dwr.xml </param-value> </init-param> <init-param> <param-name>debug</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dwrServlet</servlet-name> <url-pattern>/dwr/*</url-pattern> </servlet-mapping></web-app>
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd"><!-- 通用dwr配置 --><dwr> <allow> <!-- 建立JS对象，将目标对象的方法转换成JS对象的方法 --> <create javascript="helloSrv" creator="new"> <param name="class" value="services.HelloServices"></param> </create> <!-- 从Spring中获取Java对象 --> <create javascript="deptSrv" creator="spring"> <param name="beanName" value="deptServices"></param> <!-- 禁止执行 --> <exclude method="deleteDept" /> </create> <create javascript="loginSrv" creator="spring"> <param name="beanName" value="loginSrv"></param> </create> <!-- 指定针对于特定对象的转换器 --> <convert match="entity.*" converter="bean"></convert> <convert match="java.lang.Throwable" converter="bean"> <param name="include" value="message"></param> </convert> </allow></dwr>
creator="spring"说明创建对象的方式是交由“spring”来管理的
<param name="beanName" value="deptServices"></param>
表示要由spring创建的类的名字根据“deptServices”唯一标识去spring的配置文件中查找，形成对应的关系
<convert match="entity.*" converter="bean"></convert>
其中convert="bean"是说明传递的对象和返回的对象的转换是使用bean的方式，这个里面的值是不变的
<?xml version="1.0" encoding="UTF-8"?><!-- 配置系统基础环境 --><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" > <bean id="deptServices" class="services.DeptServices"></bean> <bean id="loginSrv" class="services.LoginService"></bean></beans>
package entity;public class Dept { private Long id; private String name; public Dept() { } public Dept(Long id, String name) { this.id = id; this.name = name; } public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; }}
package services;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import entity.Dept;@SuppressWarnings("unchecked")public class DeptServices { public List findDept() { throw new RuntimeException("查找失败!"); } public void deleteDept(Long id) { System.out.println("Delete dept " + id); } public List getDeptsForPo() { List depts = new ArrayList(); depts.add(new Dept(1l, "教质部")); depts.add(new Dept(2l, "学术部")); depts.add(new Dept(3l, "就业部")); depts.add(new Dept(4l, "咨询部")); return depts; } public void saveDept(List<Dept> depts) { // System.out.println(dept.getId() + ":" + dept.getName()); System.out.println(depts); } public List getDepts() { List depts = new ArrayList(); Map map = new HashMap(); map.put("id", "01"); map.put("name", "教质部"); depts.add(map); map = new HashMap(); map.put("id", "02"); map.put("name", "学术部"); depts.add(map); map = new HashMap(); map.put("id", "03"); map.put("name", "就业部"); depts.add(map); map = new HashMap(); map.put("id", "04"); map.put("name", "咨询部"); depts.add(map); try { Thread.sleep(1000); } catch (InterruptedException e) { e.printStackTrace(); } return depts; } public void test(){ System.out.println("tests"); } public void testPar(String s){ System.out.println("testPar " + s); } public void testObj(Dept d){ System.out.println(d.getId()); System.out.println(d.getName()); }}
package services;/** * @author dlwu * */public class HelloServices { public String sayHello(String name){ System.out.println("Hello now!"); return "Hello " + name + "!"; }}
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'hello.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> </head> <!-- 记得引入js，测试地址： http://localhost:8083/dwrweb/dwr/ --> <script type="text/javascript" src="dwr/engine.js"></script> <script type="text/javascript" src="dwr/interface/deptSrv.js"></script> <script type="text/javascript" src="dwr/util.js"></script> <script type="text/javascript"> function test(){ //声明dept对象 deptSrv.test(); } function test1(){ //传递普通的字符 var temp = "test parameter String"; deptSrv.testPar(temp); } function test2(){ //传递对象 var obj = {id:"1234",name:"huangbiao"}; deptSrv.testObj(obj); } function test3(){ //得到对象 deptSrv.getDepts(function(data){for(var i = 0; i < data.length; i++ ){alert(data[i].id);} }); } </script> <body> <input value="spring测试" type="button" onclick="test();"/> <input value="传入一个字符串" type="button" onclick="test1();"/> <input value="传入一个对象" type="button" onclick="test2();"/> <input value="接受一个对象" type="button" onclick="test3();"/> </body></html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'hello.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> </head> <!-- 记得引入js，测试地址： http://localhost:8083/dwrweb/dwr/ --> <script type="text/javascript" src="dwr/engine.js"></script> <script type="text/javascript" src="dwr/interface/helloSrv.js"></script> <script type="text/javascript" src="dwr/util.js"></script> <script type="text/javascript"> function hello(){ //方法一 //返回处理后的结果信息 /*var fn = function(result){ $("msg").innerHTML = result; } helloSrv.sayHello($("name").value, fn);*/ //方法二 helloSrv.sayHello($("name").value, function(result){ $("msg").innerHTML=result; }); //方法三 //使用如下的好处为：不用导入如上三个js //第一个参数: dwr访问路径，在web.xml中配置，如： <url-pattern>/dwr/*</url-pattern> //第二个参数: dwr与java服务器通信变量，在dwr.xml中声明 //第三个参数: 服务器方法名 //第四个参数: 页面请求参数，即服务器方法名得参数 //第五个参数: 回调函数 //dwr.engine._execute("dwr", 'helloSrv', 'sayHello', $("name").value, fn); } </script> <body> <div id="msg"></div> <input type="text" id="name" /> <input type="button" value="Hello" onclick="hello();" /> </body></html>
将请求设置为同步的方法 —— DWREngine.setAsync(true);//异步，false为同步
