在Java的Struts中判断是否调用AJAX及用拦截器对其优化

===MimeHeaders ===
accept = */*
referer =http://localhost:8080/user2/toQueryPage.action
accept-language = zh-CN
user-agent = Mozilla/4.0 (compatible; MSIE8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C;.NET4.0E)
accept-encoding = gzip, deflate
host = localhost:8080
connection = Keep-Alive
cache-control = no-cache

===MimeHeaders ===
x-requested-with = XMLHttpRequest
accept-language = zh-cn
referer =http://localhost:8080/user2/toQueryPage.action
accept = application/json, text/javascript,*/*; q=0.01
content-type =application/x-www-form-urlencoded
accept-encoding = gzip, deflate
user-agent = Mozilla/4.0 (compatible; MSIE8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; InfoPath.3; .NET4.0C;.NET4.0E)
host = localhost:8080
content-length = 57
connection = Keep-Alive
cache-control = no-cache

public abstract class BaseAction 
    <ParamVo extends BaseParamVo, ResultVo extends BaseResultVo> 
      extends ActionSupport 
        implements ServletRequestAware { 
   
  private static final String AJAX_RESULT_NAME = "ajaxResult"; 
  private static final String XHR_OBJECT_NAME = "XMLHttpRequest"; 
  private static final String HEADER_REQUEST_WITH = "x-requested-with"; 
   
  /** 
   * Request对象，用来判断请求是否是AJAX调用 
   */ 
  private HttpServletRequest request; 
   
  private ParamVo paramVo; 
   
  private ResultVo resultVo; 
   
  @Override 
  public String execute() { 
    String resultPage = SUCCESS; 
    try { 
      resultVo = doExecute(paramVo); 
    } 
    catch (BaseException e) { 
      resultPage = ERROR; 
    } 
     
    if (XHR_OBJECT_NAME.equals(request.getHeader(HEADER_REQUEST_WITH))) { 
      resultPage = AJAX_RESULT_NAME; 
    } 
     
    return resultPage; 
  } 
} 

<span style="white-space:pre"> </span><interceptor name="alias" class="com.opensymphony.xwork2.interceptor.AliasInterceptor"/> 
      <interceptor name="autowiring" class="com.opensymphony.xwork2.spring.interceptor.ActionAutowiringInterceptor"/> 
      <interceptor name="chain" class="com.opensymphony.xwork2.interceptor.ChainingInterceptor"/> 
      <interceptor name="conversionError" class="org.apache.struts2.interceptor.StrutsConversionErrorInterceptor"/> 
      <interceptor name="cookie" class="org.apache.struts2.interceptor.CookieInterceptor"/> 
      <interceptor name="clearSession" class="org.apache.struts2.interceptor.ClearSessionInterceptor" /> 
      <interceptor name="createSession" class="org.apache.struts2.interceptor.CreateSessionInterceptor" /> 
      <interceptor name="debugging" class="org.apache.struts2.interceptor.debugging.DebuggingInterceptor" /> 
      <interceptor name="execAndWait" class="org.apache.struts2.interceptor.ExecuteAndWaitInterceptor"/> 
      <interceptornameinterceptorname="exception" class="com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor"/> 
      <interceptor name="fileUpload" class="org.apache.struts2.interceptor.FileUploadInterceptor"/> 
      <interceptor name="i18n" class="com.opensymphony.xwork2.interceptor.I18nInterceptor"/> 
      <interceptor name="logger" class="com.opensymphony.xwork2.interceptor.LoggingInterceptor"/> 
      <interceptor name="modelDriven" class="com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor"/> 
      <interceptor name="scopedModelDriven" class="com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor"/> 
      <interceptor name="params" class="com.opensymphony.xwork2.interceptor.ParametersInterceptor"/> 
      <interceptor name="actionMappingParams" class="org.apache.struts2.interceptor.ActionMappingParametersInteceptor"/> 
      <interceptor name="prepare" class="com.opensymphony.xwork2.interceptor.PrepareInterceptor"/> 
      <interceptor name="staticParams" class="com.opensymphony.xwork2.interceptor.StaticParametersInterceptor"/> 
      <interceptor name="scope" class="org.apache.struts2.interceptor.ScopeInterceptor"/> 
      <interceptor name="servletConfig" class="org.apache.struts2.interceptor.ServletConfigInterceptor"/> 
      <interceptor name="timer" class="com.opensymphony.xwork2.interceptor.TimerInterceptor"/> 
      <interceptor name="token" class="org.apache.struts2.interceptor.TokenInterceptor"/> 
      <interceptor name="tokenSession" class="org.apache.struts2.interceptor.TokenSessionStoreInterceptor"/> 
      <interceptor name="validation" class="org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor"/> 
      <interceptor name="workflow" class="com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor"/> 
      <interceptor name="store" class="org.apache.struts2.interceptor.MessageStoreInterceptor" /> 
      <interceptor name="checkbox" class="org.apache.struts2.interceptor.CheckboxInterceptor" /> 
      <interceptor name="profiling" class="org.apache.struts2.interceptor.ProfilingActivationInterceptor" /> 
      <interceptor name="roles" class="org.apache.struts2.interceptor.RolesInterceptor" /> 
      <interceptor name="annotationWorkflow" class="com.opensymphony.xwork2.interceptor.annotations.AnnotationWorkflowInterceptor" /> 
      <interceptor name="multiselect" class="org.apache.struts2.interceptor.MultiselectInterceptor" /> 

public class ProfilingActivationInterceptor extendsAbstractInterceptor { 
  
  private String profilingKey = "profiling"; 
  private boolean devMode; 
   
  @Inject(StrutsConstants.STRUTS_DEVMODE) 
  public void setDevMode(String mode) { 
    this.devMode = "true".equals(mode); 
  } 
  
  @Override 
  public String intercept(ActionInvocationinvocation) throws Exception { 
    if (devMode) { 
      Object val =invocation.getInvocationContext().getParameters().get(profilingKey); 
      if (val != null) { 
        String sval = (val instanceof String ?(String)val : ((String[])val)[0]); 
        boolean enable = "yes".equalsIgnoreCase(sval)|| "true".equalsIgnoreCase(sval); 
        UtilTimerStack.setActive(enable); 
        invocation.getInvocationContext().getParameters().remove(profilingKey); 
      } 
    } 
    return invocation.invoke(); 
  
  } 
  
} 

<package name="ajax-default" extends="velocity-default"> 
    <result-types> 
      <result-type name="json" class="org.apache.struts2.json.JSONResult"/> 
    </result-types> 
     
    <interceptors> 
      <interceptor-stacknameinterceptor-stackname="ajaxInterceptorStack"> 
      <interceptor-refnameinterceptor-refname="defaultStack" /> 
      <interceptor-ref name="profiling"/> 
      </interceptor-stack> 
    </interceptors> 
     
    <default-interceptor-refnamedefault-interceptor-refname="ajaxInterceptorStack" /> 
     
    <global-results> 
      <result name="comAjaxResult" type="json"> 
        <param name="excludeNullProperties">true</param> 
        <param name="root">result</param> 
        <param name="ignoreHierarchy">false</param> 
      </result> 
    </global-results> 
  </package> 

function searchAllUser(){ 
  jQuery.ajax({ 
    type:"post", 
    url: "searchAllUser.action", 
    processData:true, 
    dataType:'json', 
    data:jQuery("#userQueryForm").serialize() + "&profiling=yes", 
    success:function(data) { 
    if (data.status == 1) { 
       alert("创建成功"); 
       generateTableFromJson("result", data.resultRows); 
    } else { 
       alert("创建失败"); 
    } 
    } 
  }); 
}