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这是在 JSP 下：

<%!
public PortletURL getActionURL(RenderResponse response, String action) {

    PortletURL portleturl = response.createRenderURL();

    try {
        portleturl.setWindowState(LiferayWindowState.EXCLUSIVE);
        portleturl.setParameter("struts_action", "helloForm");
    } catch (Exception e) {
        e.printStackTrace();
    }

    return portleturl;
}
%>

<%

PortletURL helloFormssss = getActionURL(renderResponse, "helloForm");

System.out.println("The URL is helloFormssss " + helloFormssss);

%>

将此 URL 传递给 jQuery AJAX：

function my_button_handler() {
    jQuery.ajax({
        type: "POST",
        url: "helloFormssss",
        success: function(msg){
            alert( "Data Saved: " + msg );
        }
    });
}

这是我的Action课

public class Struts2Action extends DefaultActionSupport {
    String name = null;

    public String getPOPChartData() throws Exception {
        // Enter business logic here

        HttpServletRequest request = ServletActionContext.getRequest();

        HttpServletResponse response = ServletActionContext.getResponse();
        String name = ParamUtil.getString(request, "namer");

        System.out.println("The name is " + name);

        PrintWriter writer = response.getWriter();
        writer.print("Hi");

        return ActionSupport.SUCCESS;
    }
}

这是在struts.xml 文件中：

<action name="helloForm" class="com.robisoft.portlet.struts.action.Struts2Action" method="getPOPChartData">
    <result name="input">/WEB-INF/view/index.jsp</result>
    <result name="success">/WEB-INF/view/result.jsp</result>
</action>

网址是 helloFormssss

http://localhost:8086/web/guest/home?p_p_id=HelloStruts_WAR_HelloStrutsportlet_INSTANCE_yip2vomViZSU&p_p_lifecycle=0&p_p_state=exclusive&p_p_mode=view&p_p_col_id=column-1&p_p_col_count=1&_HelloStruts_WAR_HelloStrutsportlet_INSTANCE_yip2vomViZSU_struts_action=helloForm

这是我进入服务器控制台的异常

14:31:37,973 错误 [Jsr168Dispatcher:38] 无法执行操作。 java.lang.IllegalStateException：在 com.robisoft.portlet.struts.action.Struts2Action.getPOPChartData(Struts2Action.java ) 的 org.apache.struts2.portlet.servlet.PortletServletResponse.getWriter(PortletServletResponse.java:169)
的事件阶段不允许:56) 在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)




在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 在 java.lang.reflect.Method.invoke(Method.java:597) 在 com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452) 在com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254) 在 com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java: 176) 在 com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 com.opensymphony.xwork2。com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java: org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) 98）在com.opensymphony.xwork2.DefaultActionInvocation.invoke（DefaultActionInvocation.java:248）在com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept（ConversionErrorInterceptor.java:133）在com.opensymphony.xwork2.DefaultActionInvocation.invoke（DefaultActionInvocation .java:248) 在 com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) 在 com.opensymphony.xwork2.interceptor.MethodFilterInterceptor。在 com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) 在 com.opensymphony.xwork2 的拦截（MethodFilterInterceptor.java:98） .interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190) 在com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75) 在 com.opensymphony.xwork2。DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) at org.apache .struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100 ) 在 com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) 在 com.opensymphony 的 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)。xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)在 com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor .java:171) 在 com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 com.opensymphony。xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java :248) 在 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) 在 org.apache.struts2 的 com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)。org.apache.struts2.portlet.interceptor.PortletStateInterceptor.intercept(PortletStateInterceptor.java: 52) 在 org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) 在 org.apache.struts2.portlet.dispatcher.Jsr168Dispatcher 的 com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) .serviceAction(Jsr168Dispatcher.java:451) at org.apache.struts2.portlet.dispatcher.Jsr168Dispatcher.processAction(Jsr168Dispatcher.java:298) at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:70) at com。 liferay.portal.kernel.portlet。PortletFilterUtil.doFilter(PortletFilterUtil.java:48) at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:93) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

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