Struts2 + JQuery + JSON - некоторые проблемы

Question

Мне нужно загрузить часть кода динамически, используя JQuery и Json.

Это мой struts.xml:

<?xml version="1.0" encoding="UTF-8" ?> 
<!DOCTYPE struts PUBLIC 
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" 
"http://struts.apache.org/dtds/struts-2.0.dtd"> 

<struts> 
    <constant name="struts.enable.DynamicMethodInvocation" value="false" /> 
    <constant name="struts.devMode" value="true" /> 

    <package name="model" extends="struts-default"> 
     <action name="UserManager" class="model.UserManager"> 
      <result>index.jsp</result> 
     </action> 
    </package> 

    <package name="test" extends="json-default"> 
     <action name="giveMeJsonData" class="test.testAction" method="myFunction"> 
      <result type="json"><param name="root">jsonData</param></result> 
     </action>   
    </package> 
</struts> 

это мой testAction класс:

package test; 

import com.opensymphony.xwork2.ActionSupport; 
import java.util.LinkedHashMap; 

public class testAction extends ActionSupport { 
    private LinkedHashMap<String, String> jsonData; 

    public LinkedHashMap<String, String> getJsonData() { return jsonData; } 
    public void setJsonData(LinkedHashMap<String, String> jsonData) { this.jsonData = jsonData; } 

    @Override 
    public String execute() throws Exception { 
     return SUCCESS; 
    } 

    public String myFunction() { 
     jsonData = new LinkedHashMap<String, String>(); 
     jsonData.put("My name is", "marco"); 
     return SUCCESS; 
    } 
} 

и я называю этот метод с представить:

<s:div id="my_result" > 
    <s:property value="jsonData" /> 
</s:div> 

<s:form action="giveMeJsonData" theme="simple"> 
    <sj:submit targets="my_result" value="Example" /> 
</s:form> 

Задачи:

1 - Unfortunatly, когда я пытаюсь запустить приложение, журнал сервера (кот) говорит:

Unable to load configuration 
Error building results for action UserManager in namespace 

относительно линии <action name="UserManager" class="model.UserManager"> и

There is no result type defined for type 'json' mapped with name 'success'. Did you mean 'json'? 

относительно <result>index.jsp</result>

2 - Когда я нажимаю кнопку «Пример», я не получаю элемент Json.

Что я не так?

Приветствия

UPDATE 1

<package name="json-default" extends="struts-default"> 
    <result-types> 
     <result-type name="json" class="com.googlecode.jsonplugin.JSONResult"/> 
    </result-types> 
</package> 

<package name="test" extends="json-default"> 
    <action name="giveMeJsonData" class="test.testAction" method="myFunction"> 
     <result type="json"><param name="root">jsonData</param></result> 
    </action>   
</package> 

UPDATE 2

9-dic-2010 13.49.35 org.apache.catalina.core.StandardContext filterStart 
GRAVE: Exception starting filter struts2 
Unable to load configuration. - action - file:/C:/Users/djfonplaz/Documents/Stage/Struts2/build/web/WEB-INF/classes/struts.xml:11:62 
     at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431) 
     at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) 
     at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51) 
     at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295) 
     at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422) 
     at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115) 
     at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838) 
     at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488) 
     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) 
     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) 
     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) 
     at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637) 
     at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:563) 
     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:498) 
     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277) 
     at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321) 
     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) 
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) 
     at org.apache.catalina.core.StandardHost.start(StandardHost.java:785) 
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) 
     at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) 
     at org.apache.catalina.core.StandardService.start(StandardService.java:519) 
     at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) 
     at org.apache.catalina.startup.Catalina.start(Catalina.java:581) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
     at java.lang.reflect.Method.invoke(Method.java:597) 
     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) 
     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) 
Caused by: Unable to load configuration. - action - file:/C:/Users/djfonplaz/Documents/Stage/Struts2/build/web/WEB-INF/classes/struts.xml:11:62 
     at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58) 
     at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374) 
     at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418) 
     ... 29 more 
Caused by: Error building results for action UserManager in namespace - action - file:/C:/Users/djfonplaz/Documents/Stage/Struts2/build/web/WEB-INF/classes/struts.xml:11:62 
     at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:367) 
     at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:468) 
     at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:264) 
     at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111) 
     at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:193) 
     at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55) 
     ... 31 more 
Caused by: There is no result type defined for type 'json' mapped with name 'success'. Did you mean 'json'? - result - file:/C:/Users/djfonplaz/Documents/Stage/Struts2/build/web/WEB-INF/classes/struts.xml:12:35 
     at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.buildResults(XmlConfigurationProvider.java:621) 
     at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:365) 
     ... 36 more 
9-dic-2010 13.50.23 org.apache.catalina.core.StandardContext filterStart 
GRAVE: Exception starting filter struts2 
Unable to load configuration. - action - file:/C:/Users/djfonplaz/Documents/Stage/Struts2/build/web/WEB-INF/classes/struts.xml:11:62 
     at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431) 
     at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69) 
     at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51) 
     at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295) 
     at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422) 
     at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115) 
     at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838) 
     at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488) 
     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) 
     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) 
     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) 
     at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:637) 
     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:521) 
     at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1359) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
     at java.lang.reflect.Method.invoke(Method.java:597) 
     at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) 
     at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) 
     at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) 
     at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1500) 
     at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:849) 
     at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:351) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:199) 
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558) 
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) 
     at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) 
     at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) 
     at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) 
     at java.lang.Thread.run(Thread.java:619) 
Caused by: Unable to load configuration. - action - file:/C:/Users/djfonplaz/Documents/Stage/Struts2/build/web/WEB-INF/classes/struts.xml:11:62 
     at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58) 
     at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374) 
     at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418) 
     ... 41 more 

Answer 1

Кажется, вы взяли this вид примера.

Попробуйте с этим struts.xml:

<?xml version="1.0" encoding="UTF-8" ?> 
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> 

<struts> 
    <constant name="struts.enable.DynamicMethodInvocation" value="false" /> 
    <constant name="struts.devMode" value="true" /> 

    <package name="test" extends="json-default"> 
     <action name="giveMeJsonData" class="test.testAction" method="myFunction"> 
     <result type="json"><param name="root">jsonData</param></result> 
     </action> 
    </package> 
</struts> 

И вы должны включить json plugin в /WEB-INF/lib.

Я использую другой способ.

struts.xml:

<action name="getjson" class="myclass" method="getJson"> 
    <result name="success" type="stream"> 
    <param name="contentType">application/json</param> 
    <param name="inputName">inputStream</param> 
    </result> 
</action> 

Метод:

public String getJson() { 
    String json = "({ 'var1': 'value1', 'var2': 'value2' })"; 
    inputStream = new ByteArrayInputStream(json.getBytes()); 
    return SUCCESS; 
} 

Update: Я изменил struts.xml. Пакет json-default определен в плагине.

Обновление 2: Эта настройка работала для меня.

стойки.XML:

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE struts PUBLIC 
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" 
    "http://struts.apache.org/dtds/struts-2.0.dtd"> 

<struts> 
    <constant name="struts.enable.DynamicMethodInvocation" value="false" /> 
    <constant name="struts.devMode" value="true" /> 

    <package name="TestJson" extends="json-default"> 
     <action name="giveMeJsonData" class="test.testAction" method="myFunction"> 
     <result type="json"><param name="root">jsonData</param></result> 
     </action> 
    </package> 
</struts> 

У меня была проблема с jsonplugin-0,34, я использовал struts2-json-plugin-2.1.8.jar вместо этого. Но ошибка у меня был не имеет ничего общего с вашим: Это было «java.lang.ClassNotFoundException: com.opensymphony.xwork2.util.TextUtils»

Если кнопка примера выскочить окно загрузки, попробуйте это для СПЯ страница:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" 
    pageEncoding="ISO-8859-1"%> 
<%@ taglib prefix="s" uri="/struts-tags" %> 
<%@ taglib prefix="sj" uri="/struts-jquery-tags" %> 

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
    <head> 
     <sj:head/> 
     <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 
     <title>Json Test</title> 
    </head> 
    <body> 
     <s:div id="my_result" > 
      <s:property value="jsonData" /> 
     </s:div> 
      <sj:a targets="my_result" href="giveMeJsonData">Example</sj:a> 

    </body> 
</html>