本文以实例形式描述在jsf中配置dwr的方法。

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应用要求：在javascript方法中调用后台Bean的方法和Spring容器中服务的方法。

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步骤如下：

? ? ?1、??JAR包支持

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dwr.jar、json-lib-2.3-jdk13.jar，ezmorph-1.0.6.jar

说明：依赖的jar包：commons-collections-XX.jar，版本必须在3.0以上

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2、web.xml配置DwrServlet和FacesExtensionFilter

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<!-- dwr begin -->
  <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>
    <init-param>
      <param-name>crossDomainSessionSecurity</param-name>
      <param-value>false</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>
  <!--DWR/Faces 过滤器允许你不在JSF的生命周期里调用FacesContext中的Bean。-->
  <filter>
    <filter-name>DwrFacesFilter</filter-name>
    <filter-class>org.directwebremoting.faces.FacesExtensionFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>DwrFacesFilter</filter-name>
    <url-pattern>/dwr/*</url-pattern>
  </filter-mapping>
 <!-- dwr end -->

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<!--[if !supportLists]-->? ?3、? <!--[endif]-->在WEB-INF下建立dwr.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd">
<dwr>
	<allow>
		<!--调用jsf后台Bean的方法-->
		<create creator="jsf" javascript="BranchMerg">
			<param name="managedBeanName" value="BranchMerg" />
			<param name="class"
				value="cn.ccb.zjtsrmbp.security.web.bb.BranchMerg" />
		</create>
<！--直接调用spring容器内服务的方法-->
<create javascript="billBranch" creator="spring">
			<param name="beanName" value="securityBillBranchNewUCCTarget" />	
		</create>
	</allow>
</dwr>

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?4、? Service里的方法范例

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public String getSubBillBranch(String orgNo) {

	List objects=XXX;//可序列化的对象
	JSONArray jsonArray = JSONArray.fromObject(objects);//通过json方式进行序列化
	String jsonStr = jsonArray.toString();
	return jsonStr;
}

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5、JS方法调用DWR

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<script type="text/javascript"
		src="<%=request.getContextPath()%>/js/util.js"></script>
	<script type='text/javascript'
		src='<%=request.getContextPath()%>/dwr/engine.js'></script>
	<!---下面的billBranch.js名称对应dwr.xml里的配置--->
	<script type='text/javascript'
		src='&