Solution of struts json type abnormal return to js bullet frame problem

Solution of struts json type abnormal return to js bullet frame problem

When the struts framework is configured with exceptions, for example:

<package name="sysCnn" namespace="/" extends="json-default"> 
    <global-results> 
      <result name="error">/WEB-INF/pages/error.jsp</result> 
      <result name="over">/js/over.js</result> 
    </global-results> 
     
    <global-exception-mappings> 
      <exception-mapping result="error" exception="java.lang.Exception" /> 
      <exception-mapping result="over" exception="com.xxx.exception.OverException" /> 
    </global-exception-mappings> 
    <action name="ConnONGL_*" class="com.xxx.action.LoginAction" method="{1}"> 
      <result name="success" type="json" > 
          <param name="root">jsonMap</param> 
      </result> 
  </action>  

When action throws an exception, ideally, you want to go to the exception information page or js pop-up box prompt. Because of json type, the exception information page or pop-up box prompt can only be displayed in console of the browser

To modify ajax, comment out dataType: "Json", and the js bullet box can be displayed normally

$.ajax({ 
    url:$.contextPath+"/ConnONGL_login", 
    //dataType:"Json",   This line is commented out  
    async:false, 
    cache:false, 
    data:{ 

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