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jQuery不會發送內容類型為application / json的發布請求

[英]jQuery doesn't send post request with content type application/json

我正在使用jQuery 1.10.1 我想發送內容類型設置為application / json的POST請求。 我正在執行以下操作:

    $.ajax({
        type: "post",
        url: urlBase + "user/search",
        contentType: "application/json; charset=utf-8", 
        data: JSON.stringify(filter), 
        success: renderResponse,
        error: function(error) {
            console.log(error)
        }
    })

但是未發送POST,並且在錯誤回調中收到以下響應:

對象{readyState = 0,status = 0,statusText =“ error”}

生成了OPTIONS請求,但是沒有后續的POST。 以下是OPTIONS的請求和響應:

Antwort-Header
Access-Control-Allow-Head...    X-Requested-With
Access-Control-Allow-Meth...    GET, POST, OPTIONS
Access-Control-Allow-Orig...    *
Access-Control-Max-Age  86400
Allow   GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS
Content-Length  0
Server  Jetty(6.1.1)

Anfrage-Header
Accept  text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language de-de,de;q=0.8,en-us;q=0.5,en;q=0.3
Access-Control-Request-He...    content-type
Access-Control-Request-Me...    POST
Cache-Control   no-cache
Connection  keep-alive
Host    localhost:8080
Origin  http://localhost
Pragma  no-cache
User-Agent  Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

這里有什么問題? 如何使jQuery設置所需的內容類型標頭?

訪問控制起源的東西。

瀏覽器不允許在JavaScript中設置Content-Type標頭。 解決方案是修改響應頭(Java中的示例):

    HttpServletResponse hresp = (HttpServletResponse) resp;
    hresp.addHeader("Access-Control-Allow-Origin", "*");
    hresp.addHeader("Access-Control-Allow-Headers", "X-Requested-With,Content-Type");

它不是特定於jquery的,但它也適用於每個AJAX請求(Dojo或純JavaScript)。

試試這個


var postData = JSON.stringify({"key": value});//this will be your json content

$.ajax({
        type: "post",
        url: urlBase + "user/search",
        contentType: "application/json; charset=utf-8", 
        data: postData,
dataType: "json," 
        success: renderResponse,
        error: function(error) {
            console.log(error)
        }
    })

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