dwr与spring整合(1)

Spring与dwr整合 有两种方式

1、  在spring的配置文件中加入dwr的接口暴露

2、  用默认的方式

在web.xml中加入dwr的配置

Spring整合dwr花费了我整整两天的时间去尝试 ，去纠错到第二天晚上也就是现在

才调通程序

现在用第二种方式去整合spirng（mvc）和dwr

1、  先从web.xml开始

在web.xml里配置Listener

xml 代码如下： 

  <listener >  

       <    listener-class > org.springframework.web.context.ContextLoaderListener listener-class >  

  <   /  listener >   

如果在web.xml里给该Listener指定要加载的xml,如：

 

xml代码如下：

 

<!-- spring config -->

      <context-param>

           <param-name>contextConfigLocation</param-name> 

           <param-value>classpath:applicationContext.xml</param-value>

      </context-param>

则会去加载相应的xml,而不会去加载/WEB-INF/下的applicationContext.xml。

但是，如果没有指定的话，默认会去/WEB-INF/下加载applicationContext.xml。

<!-- 首先 classpath是指 WEB-INF文件夹下的classes目录

存放class文件 对应的是项目开发时的src目录编译文件 总结：这是一个定位资源的入口

 -->

Spring和dwr整合的时候必须要设置contextConfigLocation

和listener两个组件否则会报错，或者访问不到指定的类

 

 

 

 

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="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">

<!-- 在web.xml中通过contextConfigLocation配置spring，contextConfigLocation参数定义了要装入的 Spring 配置文件。如果要装载多个spring配置文件中间则用逗号（，）间隔 -->

    <context-param>

       <param-name>contextConfigLocation</param-name>

       <param-value>/WEB-INF/classes/applicationContext.xml,/WEB-INF/ beans.xml</param-value>

    </context-param>

    <listener>

       <listener-class>

org.springframework.web.context.ContextLoaderListener

</listener-class>

 

    <!-- spring前端控制器 -->

   

    </listener>

<servlet>

    <servlet-name>springmvc</servlet-name>

    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <init-param>

        <param-name>contextConfigLocation</param-name>

        <!-- 首先 classpath是指 WEB-INF文件夹下的classes目录

        存放class文件 对应的是项目开发时的src目录编译文件 总结：这是一个定位资源的入口

        -->

        <param-value>classpath:applicationContext.xml</param-value>

    </init-param>

    <load-on-startup>1</load-on-startup>

</servlet>

  <servlet-mapping>

    <servlet-name>springmvc</servlet-name>

    <url-pattern>/</url-pattern>

  </servlet-mapping>

 

<!-- 处理中文乱码问题 -->

  <filter>

    <filter-name>encoding</filter-name>

    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

    <init-param>

        <param-name>encoding</param-name>

        <param-value>UTF-8</param-value>

    </init-param>

  </filter>

  <filter-mapping>

    <filter-name>encoding</filter-name>

    <url-pattern>*.do</url-pattern>

  </filter-mapping>

 

 <listener>

    <listener-class>org.directwebremoting.servlet.DwrListener</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>

   <load-on-startup>1</load-on-startup>

 </servlet>

 <servlet-mapping>

   <servlet-name>dwr-invoker</servlet-name>

   <url-pattern>/dwr/*</url-pattern>

 </servlet-mapping>

 

 

  <!-- 每次请求开始时将request放入spring容器，请求结束时自动移除 -->

  <listener>

    <listener-class>

        org.springframework.web.context.request.RequestContextListener

    </listener-class>

  </listener>

 

    <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>

 

 

根据上面的配置信息。

<context-param>

       <param-name>contextConfigLocation</param-name>

       <param-value>/WEB-INF/classes/applicationContext.xml,/WEB-INF/ beans.xml</param-value>

    </context-param>

 

需要把applicationContext.xml文件放在src下，因为在加载的时候myeclipse会自动放到WEB-INF的classes路径下面

把beans.xml文件放在项目的WEB-INF路径下

 

applicationContext.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:jdbc="http://www.springframework.org/schema/jdbc"

    xmlns:jee="http://www.springframework.org/schema/jee"

    xmlns:jpa="http://www.springframework.org/schema/data/jpa"

    xmlns:util="http://www.springframework.org/schema/util"

    xmlns:mvc="http://www.springframework.org/schema/mvc"

    xsi:schemaLocation="

       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd

       http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd

       http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd

       http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd    

       http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd

       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

 

    <!-- 开启注解扫描 spring-->

    <!--<context:component-scan base-package="org.konghao.service"/>

    --><!-- 开启RequestMapping映射 (spring mvc)-->

    <mvc:annotation-driven/>

   

    <!-- 视图处理器 -->

    <bean id="jspView"

       class="org.springframework.web.servlet.view.InternalResourceViewResolver">

       <property name="prefix"

           value="/WEB-INF/"/>

       <property name="suffix"

           value=".jsp"/>

    </bean>   

    <!-- 现配先执行 ，后配后执行 -->

    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">

       <property name="exceptionMappings">

            <props>    

                 <prop key="java.lang.Throwable">main/error</prop>

            </props>

        </property>

    </bean>

</beans>

 

 

Beans.xml配置文件配置如下

<?xml version="1.0" encoding="UTF-8"?>

<beans

 xmlns="http://www.springframework.org/schema/beans"

 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

 xmlns:context="http://www.springframework.org/schema/context"

 xsi:schemaLocation="http://www.springframework.org/schema/beans

                    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd

                    http://www.springframework.org/schema/context

                    http://www.springframework.org/schema/context/spring-context-2.5.xsd

                    ">

    <bean id="helloService" class="org.konghao.service.HelloService"/>

</beans>

 

 

Dwr.xml的配置文件配置如下

<?xml version="1.0" encoding="UTF-8"?>

 <!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN"

"http://www.getahead.ltd.uk/dwr/dwr10.dtd">

 <dwr>

 <allow>

 <create creator="spring" javascript="hello">

 <param name="beanName" value="helloService"/>

 <include method="say"/>

 </create>

 </allow>

 </dwr>

 

测试页面的代码如下

<html>

  <head>

    <script type="text/javascript" src="<%=request.getContextPath() %>/dwr/engine.js"></script>

    <script type="text/javascript" src="<%=request.getContextPath() %>/dwr/util.js"> </script>

    <script type="text/javascript" src="<%=request.getContextPath() %>/dwr/interface/hello.js"></script>

    <script type="text/javascript">

       hello.say("zhang",function(data){

           alert(data);

       });

    </script>

  </head>

 

  <body>

  </body>

</html>