参考资料:http://directwebremoting.org/dwr/documentation/server/integration/spring.html和http://www.butterdev.com/dwr/2008/02/dwr-20x-spring-2x-with-spring-mvc/
至于想使用基于注解的dwr配置可参考http://directwebremoting.org/dwr/documentation/server/integration/spring.html.
用了几天去了解dwr,真的没有感受到dwr的强大.我现在的理解就是在本地使用javascript透明地远程调用服务器应用的java方法.现在好像用不上啊...至于什么无刷新页面的更新,由它去吧...
1.新建pom.xml,并导入此maven工程:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>testdwr</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>testweb Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>3.2.7.RELEASE</spring.version>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.1.2.v20140210</version>
<configuration>
<scanIntervalSeconds>200</scanIntervalSeconds>
<webApp>
<contextPath>/testdwr</contextPath>
</webApp>
<httpConnector>
<port>80</port>
<idleTimeout>60000</idleTimeout>
</httpConnector>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>javax.servlet.jsp.jstl-api</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.directwebremoting</groupId>
<artifactId>dwr</artifactId>
<version>3.0.M1</version>
</dependency>
</dependencies>
</project>
2.配置web.xml.要注意两个servlet-mapping的顺序.
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1" Metadata-complete="true"> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/dwr/*</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>encodingFilter</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>3.spring的配置文件applicationContext.xml.(变态的现在是http://directwebremoting.org/schema/spring-dwr-3.0.xsd不能加www,估计域名www.directwebremoting.org没有解析到部署站点的主机ip,造成http://www.directwebremoting.org/schema/spring-dwr/spring-dwr-3.0.xsd不能访问)
<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.directwebremoting.org/schema/spring-dwr http://directwebremoting.org/schema/spring-dwr-3.0.xsd">
<!-- 过滤html文件,直接返回 -->
<mvc:resources location="/" mapping="**/*.html"/>
<!-- 创建一个dwr controller用来映射dwr请求 -->
<dwr:controller id="dwrController" debug="true" />
<bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="alwaysUseFullPath" value="true" />
<property name="mappings">
<props>
<prop key="/dwr/**/*">dwrController</prop>
</props>
</property>
</bean>
<dwr:configuration>
<!-- converters -->
<dwr:convert type="bean" class="com.test.domain.User" />
</dwr:configuration>
<!-- 暴露服务 -->
<bean id="dwrService" class="com.test.dwr.DwrService">
<dwr:remote javascript="dwrService">
<dwr:include method="testUser" />
</dwr:remote>
</bean>
<!-- 以下是一般的spring mvc配置 -->
<context:component-scan base-package="com.test.web" />
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>4.写上pojo,dwr的暴露service等
5.运行mvn jetty:run,在google浏览器输入http://localhost/testdwr/index.html,查看开发工具的console.顺便测试http://localhost/testdwr/user/save和http://localhost/testdwr/user/get是否正常.
