数据设置如下：
var dataToSend = {fieldname : textdata};
和ajax调用是这样的：
var ajaxOptions = {
url: '/newpage',data: JSON.stringify(dataToSend),contentType: 'application/json; charset=utf-8',dataType: 'json',cache: false,processData: false,type: 'POST',success: function(res) {
console.log("success!");
$('#' + divname).html(res);
},error: function(res) {
console.log("There was an error: " + JSON.stringify(res));
$('#' + divname).html(res.responseText);
}
};
$.ajax(ajaxOptions);
错误消息是：出现错误：{“readyState”：4,“responseText”[此部分完全正常],“status”：200,“statusText”：“OK”}.
解决方法
从jQuery docs开始：
dataType (default: Intelligent Guess (xml,json,script,or html))
Type: String
The type of data that you’re expecting back from the server. If none
is specified,jQuery will try to infer it based on the MIME type of
the response (an XML MIME type will yield XML,in 1.4 JSON will yield
a JavaScript object,in 1.4 script will execute the script,and
anything else will be returned as a string). The available types (and
the result passed as the first argument to your success callback) are:
…
“json”: Evaluates the response as JSON and returns a JavaScript object. Cross-domain “json” requests are converted to “jsonp” unless the request includes jsonp: false in its request options. The JSON data is parsed in a strict manner; any malformed JSON is rejected and a parse error is thrown. As of jQuery 1.9,an empty response is also rejected; the server should return a response of null or {} instead. (See json.org for more information on proper JSON formatting.)
