ajax配合jsonp解決跨域存取問題

前端： 
$.ajax({ 
type:"get", 
async: false,//是否非同步 
url:"http://ip:連接埠/servlet位址", 
dataType: "json",content : "application/x-www-form-urlencoded;charset=UTF-8", 
jsonpCallback: "callback", 
data: { }, //傳遞的參數 
success: function(e){ 
//傳遞的參數 
success: function(e){ 
//傳遞的參數 
suvarem = $ .parseJSON(e);//e：傳回值 
}, 
error: function(XMLHttpRequest, textStatus, errorThrown) {} 
}); 
後台例：用servlet做的範例callback");//回呼函數 
request.setCharacterEncoding("utf-8");//防止中文亂碼 
response.setCharacterEncoding("utf-8");//防止中文亂碼 
/response.Header(/response" pragma", "no-cache"); 
//response.setHeader("cache-control", "no-cache"); 
//list要回傳的結果 
JSON 
= JSONArray.fromObject(list); response.getWriter().print(callback+"('"+jsonArray+"')");