Question

我对Struts 2上的操作有疑问。

假设我有一个包含操作"save"

的表单

我已经在我的struts.xml上添加了对某些方法的操作，例如：

<action name="save" class="actions.agenda" method="save">
            <result name="success">/agenda/success.jsp</result>
        </action>

在我的Action类中，我使用execute来加载表单中的一些参数，所以我创建了保存新条目的方法：

public String save(){
        ///Logic here
        dao.create(entry)
        return SUCCESS;
    }

问题是我遇到了这个错误：

严重：找不到行动或结果

有人可以给我这个问题的线索:)？

的web.xml

<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <filter>
    <filter-name>springOpenEntityManagerInViewFilter</filter-name>
    <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
    <init-param>
      <param-name>entityManagerFactoryBeanName</param-name>
      <param-value>entityManagerFactory</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>springOpenEntityManagerInViewFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>


    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>

.....

</web-app>

我将我的操作（保存）放在一个名为“Actions.xml”的单独xml上，并包含在struts.xml中

堆栈跟踪

Stacktraces
No result defined for action actions.agenda and result input

    com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:376)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:278)
    com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
    org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211)
    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211)
    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:90)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
    com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:192)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
    org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:511)
    org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:432)
    org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
    org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
    org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
    org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
    com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
    com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
    com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
    com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    java.lang.Thread.run(Thread.java:722)

其他行动正常。

Answer 1

您实际获得的投诉是No result defined for action actions.agenda and result input。基本上这意味着某些东西导致Struts相信您向其中一个属性提供了无效数据（或者validate方法添加了字段/操作错误）。

e.g。也许你有一个setter，它接受一个你传递非整数值的整数，就像那样。因为它不能从提供的值转换为适合setter的值，所以它会抱怨。

这会导致操作返回值'INPUT'，但您没有定义结果。通常在这里做的是返回保存“输入”结果之前显示的相同表单，因为正常的Struts 2标记（如<s:textfield>或<s:select>）将在相应字段上方显示字段错误

Answer 2

如果您提交表单，则应提供input类型的结果。所以

<action name="save" class="actions.agenda" method="save">
  <result name="success">/agenda/success.jsp</result>
  <result name="input">/agenda/myjspwithform.jsp</result>       
</action>

如何向Struts 2添加操作

2 个答案: