一、J2EE项目不用任何其他框架集成DWR框架:
web.xml配置文件:
<servlet>
<servlet-name>dwr</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<!-- 配置DWR.XML方法一 -->
<init-param>
<param-name>config</param-name>
<param-value>WEB-INF/classes/dwr.xml</param-value>
</init-param>
<!-- 如果不配置这个容易出现dwr Error: java.lang.SecurityException, Session Error异常 -->
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
WEB-INF/classes/dwr.xml的配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://www.getahead.ltd.uk/dwr/dwr20.dtd">
<dwr>
<allow>
<!-- <convert converter="bean" match=""/> -->
<create creator="new" javascript="Hello" scope="page">
<param name="class" value="luff.dwr.TESTDwr" />
<include method="test"/>
</create>
</allow>
</dwr>
luff.dwr.TESTDwr类的编写内容:
package luff.dwr;
public class TESTDwr {
public String test(){
return "123456";
}
}
jsp页面调用的方法:
<script type="text/javascript" src="dwr/interface/Hello.js"></script>
<script type="text/javascript" src="dwr/engine.js"></script>
<script type="text/javascript" src="dwr/util.js"></script>
<script type="text/javascript">
function ad(){
Hello.test(function(data){
alert(data);
});
}
</script>
其中maven依赖为:
<dependency>
<groupId>org.directwebremoting</groupId>
<artifactId>dwr</artifactId>
<version>2.0.10</version>
</dependency>
<!-- 如果不包含这个依赖包会出现:
DWR Could not initialize class org.directwebremoting.servlet.PlainPollHandler异常 -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
需要的jar包:commons-logging-1.2.jar、dwr-2.0.10.jar
二、J2EE项目集成spring与DWR框架:
web.xml配置内容:
<!-- 配置spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/classes/app*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dwr</servlet-name>
<!--
这里如果还是org.directwebremoting.servlet.DwrServlet则会出现如下异常
Error: java.lang.SecurityException: No class by name: TESTDwr
-->
<servlet-class>org.directwebremoting.spring.DwrSpringServlet
</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<!-- 如果不配置这个容易出现dwr Error: java.lang.SecurityException, Session Error异常 -->
<init-param>
<param-name>crossDomainSessionSecurity</param-name>
<param-value>false</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
其中WEB-INF/classes/app*.xml的配置文件内容:
<?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:dwr="http://www.directwebremoting.org/schema/spring-dwr"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.directwebremoting.org/schema/spring-dwr
http://www.directwebremoting.org/schema/spring-dwr-2.0.xsd"
default-autowire="byName">
<bean id="tESTDwr" class="luff.dwr.TESTDwr">
<dwr:remote javascript="Hello">
<!-- 异步方法方法 -->
<dwr:include method="qixi" />
<!-- <dwr:convert class="" type="bean" /> -->
</dwr:remote>
</bean>
</beans>
luff.dwr.TESTDwr类内容的编写:
package luff.dwr;
public class TESTDwr {
public String test(){
return "123456";
}
public String qixi(String name){
return "欢迎你:" + name;
}
}
jsp页面调用方法:
<script type="text/javascript" src="dwr/interface/Hello.js"></script>
<script type="text/javascript" src="dwr/engine.js"></script>
<script type="text/javascript" src="dwr/util.js"></script>
<script type="text/javascript">
function ad(){
Hello.qixi("八年", function(data){
alert(data);
});
}
</script>
其中maven依赖为:
<dependency>
<groupId>org.directwebremoting</groupId>
<artifactId>dwr</artifactId>
<version>3.0.M1</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.2.10.RELEASE</version>
</dependency>
注意,千万不要依赖spring版本为4.x的,spring4.x的部分类重构之后会报方法找不到异常。
需要的jar包:
参考文献:
1、http://www.cnblogs.com/kunpengit/archive/2012/03/09/2387537.html J2EE单独配置DWR
2、http://niwenhui.blog.163.com/blog/static/17060361520108822011653/ J2EE单独配置DWR,多个方法名配置到一个include里面用‘,’分隔。
3、http://blog.youkuaiyun.com/qq635785620/article/details/8169012 解决:DWR Could not initialize classorg.directwebremoting.servlet.PlainPollHandler异常
4、http://blog.youkuaiyun.com/qq635785620/article/details/8169012 解决:Error: java.lang.SecurityException, Session Error异常
5、http://www.cnblogs.com/linjiqin/archive/2011/03/28/1998125.html J2EE配置spring、dwr框架
6、http://blog.sina.com.cn/s/blog_6792eed00100ijh9.html
7、http://blog.sina.com.cn/s/blog_5f044a4d010185pn.html 解决:Error: java.lang.SecurityException, Session Error 异常