ajax call- 406不可接受

Question

我试图通过jsp中的AJAX调用从spring控制器获取JSON响应。 下面是代码。

Spring MVC Controller：

 @RequestMapping(value = "/data.htm", method = RequestMethod.GET, headers="Accept=*/*",consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public TestVO testMe(){
    TestVO testVO = manageService.getData(2);
    return testVO ; //I am getting testVo but after returning from here I am getting 406 Not Acceptable issue
}

JSP中的Ajax调用：

   $.ajax({
                 url: url2,
                 type: "GET",
                 beforeSend: function(xhr) {
                     xhr.setRequestHeader("Accept", "application/json");
                     xhr.setRequestHeader("Content-Type", "application/json");
                },
                success: function(smartphone) {alert("hi");
                }
   });

请建议解决方案。

此致