jQuery ajax回调不起作用

Question

i want to get a value through ajax call this is how i have done,

<input type="text" id="CIMtrek_CI_CER" name="CIMtrek_CI_CER" onblur="getProjectInfo()"/>

and this is what is my script,

function getProjectInfo(){
    var cerNo = document.getElementById('CIMtrek_CI_CER').value;
     $.ajax({
         type: "POST",
         url: "CIMtrek_Project_Information",
         data: {
             cerNo: cerNo
         },
         success: function (msg) {
             alert("msg : "+msg);
             document.getElementById('div_CIMtrek_CI_Used_By_ProjNo').innerHTML=msg;
         }
     });
}

and this is what is my spring method :

 @RequestMapping(value = "/CIMtrek_Project_Information", method = RequestMethod.POST)
    public String getProjectInfotmation(@RequestParam("cerNo") String cerNo,HttpServletRequest request,HttpServletResponse response) throws Exception {
        System.out.println("cerNo : "+cerNo);

        return cerNo;
    }

controll goes to this method and prints the value also but it does not replicate in call back where i have assigned the value.

success: function (msg) {
                 alert("msg : "+msg);
                 document.getElementById('div_CIMtrek_CI_Used_By_ProjNo').innerHTML=msg;
             }

when i have used firebug the response is HTTP Status 404 - /ProjectCapexMonitoring/WEB-INF/views/81723.jsp

81723 is the input i gave with this input .jsp is added and gives this exception.

Please help me to fine what is the and resolve.

Best Regards.

Answer 1

If you are expecting json response and have jackson jars in your classpath

add @ResponseBody to your method

change

@RequestMapping(value = "/CIMtrek_Project_Information", method = RequestMethod.POST)
public String getProjectInfotmation(@RequestParam("cerNo") String cerNo,HttpServletRequest request,HttpServletResponse response) throws Exception {
    System.out.println("cerNo : "+cerNo);

    return cerNo;
}

to

@RequestMapping(value = "/CIMtrek_Project_Information", method = RequestMethod.POST)
public @ResponseBody String getProjectInfotmation(@RequestParam("cerNo") String cerNo,HttpServletRequest request,HttpServletResponse response) throws Exception {
    System.out.println("cerNo : "+cerNo);

    return cerNo;
}