DWR与Spring的集成
今天复习一下DWR与Spring的集成。
1. 导入DWR框架的包,
2. 配置spring配置文件
<?xmlversion="1.0" encoding="UTF-8"?>
<beansxmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd"
default-autowire="byName" default-lazy-init="true">
<beanid="dwrTest" class="book.dwr.DwrTest" />
</beans> |
3. 在/WEB-INF/下创建dwr.xml配置文件
<?xmlversion="1.0" encoding="UTF-8"?>
<dwr>
<allow>
<createcreator="spring" javascript="service">
<paramname="beanName" value="dwrTest" />
<includemethod="getPersonList"/><!--需要对外暴露的方法-->
</create>
</allow>
</dwr> |
creator属性的值可以是new,struts,spring......因为此处是整合spring来做的，所以设置成“spring”，javascript="DWRUser" 表示实例转换成javascript语言后以DWRUser命名，前台页面可以通过代码（<script type='text/javascript' src='../../dwr/interface/DWRUser.js'></script>）来调用。param元素的name属性值可以是class,beanName等，此处用beanName,value得值是定义在applicationContext.xml中某个bean的id值。
4. 在web.xml文件中配置
<?xmlversion="1.0" encoding="UTF-8"?>
<web-appversion="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<!-- 配置spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/*.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.servlet.DwrServlet</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> |
5. 创建一个bean ,使dwr 将它转换成js，此类就一个方法，用于测试Extjs中自定义DWR数据代理
package book.dwr;
publicclass DwrTest {
public String getPersonList(){
StringBuffer jsonData = new StringBuffer();
jsonData.append("{");
jsonData.append("metaData : {totalProperty: 'results',");
jsonData.append("root: 'rows',");
jsonData.append("id: 'id' ,");
jsonData.append("fields : [");
jsonData.append("{name: 'id',mapping:'id'},");
jsonData.append("{name: 'personName',mapping:'name'},");
jsonData.append("{name: 'personAge',mapping:'age'}");
jsonData.append("]},");
jsonData.append("results : 5,");
jsonData.append("rows : [");
jsonData.append("{ id : 0 , name : 'tom' , age : 24 },");
jsonData.append("{ id : 1 , name : 'jack' , age : 18 }");
jsonData.append("]");
jsonData.append("}");
return jsonData.toString();
}
} |
6. 调用
这步省略了。
