我是DWR的新手。我正在嘗試使用DWR腳本訪問java類。未生成DWR class.js文件
我正在使用帶有struts的DWR作爲Web層,並且內部彈出依賴注入。
我的web.xml看起來是這樣的:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:jsp="http://java.sun.com/xml/ns/javaee/jsp" xmlns:web="http://java.sun.com /xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns /javaee/web-app_3_0.xsd" id="WebApp_TAPE" version="3.0">
<welcome-file-list>
<welcome-file>Login.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<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>
</web-app>
我的dwr.xml是這樣的:
<?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>
<create creator="new" javascript="task">
<param name="class" value="com.Task"/>
</create>
</allow>
</dwr>
在我的JSP中,我添加了以下三行:
<script type='text/javascript' src="<%=contextString %>/dwr/engine.js"></script>
<script type='text/javascript' src="<%=contextString %>/dwr/util.js"></script>
<script type='text/javascript' src="<%=request.getContextPath() %>/dwr/interface/task.js"></script>
這就是我想要訪問「任務」腳本的方式:
var count = task.getTaskCount();
alert(count);
getTaskCount方法是一個返回int值的簡單方法。
現在,在我上面的代碼中,我可以使用 /dwr /來訪問engine.js和util.js文件。
但是當我嘗試使用URL訪問task.js文件: /dwr/interface/task.js,該腳本不產生以下錯誤控制檯上產生:
2014-04-23 18:48:55,896 ["http-bio-8444"-exec-9] WARN org.directwebremoting.servlet.ExceptionHandler:67 - Unhandled Exception
java.lang.SecurityException: No class by name: taskBL
at org.directwebremoting.impl.DefaultCreatorManager.getCreator(DefaultCreatorManager.java:189)
at org.directwebremoting.impl.DefaultRemoter.generateInterfaceScript(DefaultRemoter.java:158)
at org.directwebremoting.servlet.InterfaceHandler.handle(InterfaceHandler.java:50)
at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)
at org.directwebremoting.servlet.DwrServlet.doGet(DwrServlet.java:132)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
任何幫助非常感謝。
在此先感謝。