spring2 整合 Dwr(把DWR的配置写到Spring的配置文件)
Spring 2基于XML Schema的配置,Spring 2通过XML Schema配置方式极大地简化的其配置,而且使得第三方扩展变为可能
<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" >
打开DWR的jar包中META-INF/spring.schemas文件,内容如下:
http\://www.directwebremoting.org/schema/spring-dwr-2.0.xsd=org/directwebremoting/spring/spring-dwr-2.0.xsd
我们在配置Spring 2时,应在名称空间中加入以下配置:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr" 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 http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-2.0.xsd">
以下是我整个spring的配置及一些java类
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr" 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 http://www.directwebremoting.org/schema/spring-dwr http://www.directwebremoting.org/schema/spring-dwr-2.0.xsd"> <!-- spring bean配置 --> <bean id="dwrHelper" class="com.DwrHelper"> <!-- 定义调用的js文件 --> <dwr:remote javascript="dwrHelper"></dwr:remote> <property name="service"> <ref bean="service"/> </property> </bean> <bean id="service" class="com.TestServiceImp"/> <!-- end spring bean配置 --> </beans>
DwrHelper.java
package com;
public class DwrHelper {
private TestServiceInf service;
public String checkUsername(String name){
return service.checkedUser(name)?"成功":"请正确输入用户名";
}
public TestServiceInf getService() {
return service;
}
public void setService(TestServiceInf service) {
this.service = service;
}
}
TestServiceInf.java
package com;
public interface TestServiceInf {
public boolean checkedUser(String userName);
}
TestServiceImp.java
package com;
public class TestServiceImp implements TestServiceInf{
public boolean checkedUser(String userName){
return userName.equals("callan");
}
}
web.xml
<?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"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <servlet> <servlet-name>dwr-invoker</servlet-name> <servlet-class> org.directwebremoting.spring.DwrSpringServlet </servlet-class> <init-param> <param-name>debug</param-name> <param-value>true</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dwr-invoker</servlet-name> <url-pattern>/dwr/*</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<html>
<head>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/interface/dwrHelper.js'></script>
</head>
<body>
<input type="text" name="username"/>
<input type="button" onclick='aa()'; value="Click">
</body>
</html>
<script type="text/javascript">
<!--
function aa(name){
var v = document.getElementById("username").value;
dwrHelper.checkUsername(v,function(data){
alert(data);
});
}
//-->
</script>