我有以下jQuery AJAX请求:
function addRecord() {
console.log('addRecord');
$.ajax({
type: 'POST',
url: rootURL,
contentType: 'application/json',
dataType: "json",
data: formToJSON(),
success: function(data, textStatus, jqXHR){
alert('form submitted successfully');
alert('data'+data);
},
error: function (xhRequest, ErrorText, thrownError) {
alert("Failed to process request correctly, please try again");
console.log('xhRequest: ' + xhRequest + "\n");
console.log('ErrorText: ' + ErrorText + "\n");
console.log('thrownError: ' + thrownError + "\n");
}
});
}
function formToJSON() {
return JSON.stringify({"dateofVisit": $('#dateofVisit').val()});
}
以下是我在firebug中收到的输出。
Server Apache-Coyote/1.1
Access-Control-Allow-Orig... *
Access-Control-Allow-Cred... true
Access-Control-Allow-Meth... GET, POST, DELETE, PUT, OPTIONS, HEAD
Access-Control-Allow-Head... Content-Type, Accept, X-Requested-With
Content-Type text/plain
Transfer-Encoding chunked
Date Thu, 24 Oct 2013 09:37:34 GMT
Connection close
Request Headersview source
Host localhost:8080
User-Agent Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10
Accept application/json, text/javascript, */*; q=0.01
Accept-Language en-us,en;q=0.5
Accept-Encoding gzip,deflate
Accept-Charset ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive 115
Connection keep-alive
Content-Type application/json; charset=UTF-8
Referer http://mydomain.com/DemoPurpose/demo.html
Content-Length 28
Origin http://mydomain.com
Pragma no-cache
Cache-Control no-cache
JSON
dateofVisit
"23-10-2013"
Source
{"dateofVisit":"23-10-2013"}
empty
xhRequest: [object Object]
ErrorText: error
thrownError:
我是jquery的新手,所以基本上不知道我在做错误的地方。有一件事是肯定它会出现ajax调用的错误,但为什么呢?它能够形成json ...然后它为什么会出错?请帮帮我。
答案 0 :(得分:2)
当你放dataType=json
时,这意味着你不应该返回空内容。
“json”:将响应评估为JSON并返回JavaScript对象。 JSON数据以严格的方式解析;任何格式错误的JSON都会被拒绝,并抛出一个解析错误。从jQuery 1.9开始,空响应也被拒绝;服务器应该返回null或{}的响应。 (有关正确的JSON格式的更多信息,请参阅json.org。)
此外,您需要检查您的回复状态是200还是400。
您的服务器端代码存在一些问题
@POST @Consumes({MediaType.APPLICATION_JSON})
@Produces({MediaType.TEXT_PLAIN}) @Path("/hello")
//---------------------^^^ why you use plain text? why not application json
public Response create(String name) throws JSONException
{
System.out.println("creating record for account");
//JSONObject jsonObj = new JSONObject(name);
//------------------------------^^^^^ it's not jsonformat, error should be here
//try this way
JSONObject jsonObj = new JSONObject();
jsonObj.append("name",name);
return Response.status(201).entity(jsonObj).build();
}