我正在输入一些想要添加到数据库的数据。我通过这样的形式来做到这一点:
<s:form theme="simple" action="addExam">
<div id="reg">
<s:textfield name="exam.name" cssErrorClass="register error"
placeholder="Exam Name" cssClass="register" required="" />
<s:textfield name="exam.minutesAllotted"
placeholder="Minutes Allotted" cssClass="register" required="" />
<s:textfield name="exam.numQuestions"
placeholder="Number Of Questions" cssClass="register" required="" />
<sj:datepicker name="exam.startDate" cssClass="register"
placeholder="Start Date" displayFormat="dd/mm/yy" required="" />
<sj:datepicker name="exam.endDate" cssClass="register"
placeholder="End Date" displayFormat="dd/mm/yy" required="" />
</div>
<!-- Blue Button -->
<s:submit type="button" cssClass="button blue" value="Add" />
</s:form>
struts.xml的相关部分:
<action name="addExam" class="actions.AddExam">
<result name="success" type="chain">display-exams</result>
<result name="error">/add_exam.jsp</result>
</action>
我的操作如下:
public class AddExam extends ActionSupport{
//Has getter and setter with proper naming convention
private Exam exam;
@Override
public String execute()
{
EntityManagerFactory emf = Persistence.createEntityManagerFactory("ExamModulePu");
EntityManager em = emf.createEntityManager();
ExamService service = new ExamServiceImplementation(em);
Exam examResult = service.createExam(exam);
String result;
if(examResult==null)
{
addFieldError("exam.name", "Duplicate Exam Name");
result = SUCCESS;
}
else
result = ERROR;
em.close();
emf.close();
return result;
}
我的考试实体如下所示:
@Entity
public class Exam implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
@Column(unique = true)
private String name;
private int numQuestions;
private int minutesAllotted;
private Date startDate;
private Date endDate;
@OneToMany(mappedBy = "exam", orphanRemoval = true, cascade = CascadeType.ALL)
private List<Question> questionList;
}
当我将数据输入此表单时，我收到错误“没有为操作操作定义结果。AddExam 和结果输入”，并带有堆栈跟踪:
No result defined for action actions.AddExam and result input
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:373)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
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:246)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
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:246)
com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:546)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1008)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
我认为这与日期输入未正确处理并被设置到我的考试数据成员中有关。我可以从下拉列表中选择一个日期并选择它，但即使我输入无效日期(例如 23/11/51325)，它仍然允许我提交并给出相同的错误。也许是我的日期变量和输入之间的格式不匹配？
最佳答案
结果input当表单上的某些验证不正确时会触发。您必须将该结果添加到映射的 action 中标记 struts.xml :
<action name="addExam" class="actions.AddExam">
<result name="success" type="chain">display-exams</result>
<result name="error">/add_exam.jsp</result>
<result name="input">/add_exam.jsp</result>
</action>
这样做也许你不需要那个<result name="error"> .
关于java - 没有为操作 actions.AddExam 定义结果和结果输入，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17184782/