java - 在 Struts 2 中使用 jQuery 的 Ajax 表单提交按钮

Question

我有带有提交按钮的表单，当单击按钮时，它会前进到下一页并从后端获取所有数据。但基于新的需求，页面需要保持相同的页面，但后端流程应该相同。所以我使用 Ajax 调用来获取后端数据。但它没有按预期工作。请检查以下代码。

<s:form action="product!list" id="searchForm" method="Post" onSubmit="FormSubmitHandler()">
<s:submit action="product" method="list" value="search" />  
</s:form>

我试图运行该页面。

<s:form action="product!list" id="searchForm" method="Post" onSubmit="FormSubmitHandler()">
    <s:submit id="search" />
    </s:form>

jQuery 代码:

$("#search").click(function(){
    jQuery.ajax({
     url : '<s:url action="product" method="list" />',
    success : function(data){alert(data)}
    
    });
    return false;
    });

控制台错误:

2013-07-01 09:18:02,318 DEBUG apache.struts2.codebehind.CodebehindUnknownHandler - Trying to locate unknown action template with extension .jsp in directory /
2013-07-01 09:18:02,318 DEBUG apache.struts2.codebehind.CodebehindUnknownHandler - Trying to locate unknown action template with extension .vm in directory /
2013-07-01 09:18:02,318 DEBUG apache.struts2.codebehind.CodebehindUnknownHandler - Trying to locate unknown action template with extension .ftl in directory /
2013-07-01 09:18:02,334 WARN            org.apache.struts2.dispatcher.Dispatcher - Could not find action or result
There is no Action mapped for action name pricing. - [unknown location]
        at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
        at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:70)
        at org.apache.struts2.rest.RestActionProxyFactory.createActionProxy(RestActionProxyFactory.java:51)
        at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:500)
        at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
        at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:74)
        at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)
        at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:74)
        at org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:102)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:74)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3288)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3254)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
        at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
        at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2163)
        at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2089)
        at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2074)
        at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1513)
        at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

Action 类:

@Results({@Result(name=pricing.action.PartAction.INPUT,type=ServletDispatcherResult.class,value="/product-search.jsp", params={"location", "/product-search.jsp"}),
@Result(name="success",type=JSONResult.class,value="",params={"root","findList"})

})

@Validation()
public class PartAction extends BaseAction implements Preparable, ServletResponseAware {

public String list(){
    try {
    buildHeaders();

} catch (Exception e) {
    log.error(e);
    super.addActionMessage("No prices were found that match your search criteria.  Please select different options and try again.");
    return SEARCH;
  }
  return LIST;
  }

BaseAction 实现了:

@ParentPackage(value="pricing")
public abstract class BaseAction extends ActionSupport implements ServletRequestAware, SessionAware {
 protected static final String LIST = "list"; 
public String execute() throws Exception {
     
    return SUCCESS;
  }

上面的代码没有调用action类中的list()方法。

Answer 1

尝试这个脚本

<script type="text/JavaScript">
  $("#searchForm").submit(function(event) {
    event.preventDefault();
    var $form = $(this);
    var url = $form.attr('action');
    $.post(url).done(function(data) {
      alert(data);
    });
  });
</script>

并更改表单，例如

<s:url var="formUrl" action="product" method="list" />
<s:form action="%{#formUrl}" id="searchForm" method="POST">
  <s:submit/>
</s:form>

编辑:

不可能是来自其他代码的错误，上面的代码没有使用。在上面的代码中，提交按钮后，将调用 product 操作。然后你应该在类上添加 @Action(name="product")

@Action(name="product")
@Results({
 @Result(name=INPUT,type=ServletDispatcherResult.class, value="/product-search.jsp"),
 @Result(name=SUCCESS,type=JSONResult.class,value="",params={"root","findList"})
})
@Validation()
public class PartAction extends BaseAction { //removed interfaces that aren't implemented

  private List<Object> findList = new List<Object>(); //you could use any type instead of Object

  public List<Object> getFindList(){ //this is needed to JSON result
    return findList;
  }

  public String list(){
    try {
      buildHeaders();    
    } catch (Exception e) {
      log.error(e);
      addActionMessage("No prices were found that match your search criteria.  Please select different options and try again."); //super is not needed use protected modifire
      return INPUT; //the result should be above
    }
    return SUCCESS; //the result should be above
  }
}