java web支持jsonp的实现代码

<  type=\"text/ \"> 
$(function(){   
  /* 
  //简写形式，效果相同 
  $.getJSON(\"http://app.example.com/ /json.do?sid=1494&busiId=101&jsonpCallback=?\", 
      function(data){ 
        $(\"#showcontent\").text(\"Result:\"+data.result) 
  }); 
  */ 
  $.ajax({ 
    type : \"get\", 
    async:false, 
    url : \"http:/XXX\", 
    dataType : \"jsonp\",//数据类型为jsonp 
    jsonp: \"jsonpCallback\",//服务端用于接收callback调用的function名的参数 
    jsonpCallback:\"自定义回调函数名\"
    success : function(data){ 
      alert(data.info) 
    }, 
    error:function(){ 
      alert(\'fail\'); 
    } 
  });  
}); 
</ >

@ResponseBody
  @RequestMapping(value = \"/url\", produces= MediaType.APPLICATION_JSON)
  public String test(
            HttpServletRequest request,
            HttpServletResponse response) throws Exception{
    String result = getResult();
    response.setHeader(\"Pragma\", \"no-cache\");
    response.setHeader(\"Cache-Control\", \"private,no-cache,no-store,max-age=0\");
    response.setDateHeader(\"Expires\", 0);
    String str=request.getParameter(\"jsonpCallback\");
    if (str==null||str.equals(\"\")) {
      return result;
    } else {
      return str + \"(\" + result + \")\";
    }
  }