無法在服務器上檢索到JSON對象

Question

我通過在ajax中將其字符串化來傳遞JSON對象。 但是不會在服務器端檢索到它。

jsonData = {
    "10001":{
        "2":["33","","8","","9",""],
        "name":"abc",
        "token":"10001",
        "01":["","36","","1","1","8"]
    },
    "10002":{
        "2":["67","87","78","5","44",""],
        "name":"dfds",
        "token":"10002",
        "01":["9","","7","3","5","7"]
    }
}

使用ajax傳遞對象，如下所示：

var jsonData = JSON.stringify(emp);                   
$.ajax({
    url: "SaveController",
    type: "POST",
    dataType: "json",                  
    data: {empData:jsonData},
    contentType: "application/json; charset=utf-8",
    async: false,
    cache: false,                        
    success: function(response){
        alert("Data Saved...");
        alert(JSON.stringify(response));
    },
    error: function(err){
        alert("Error in Saving Data...");
        alert(JSON.stringify(err));
    }
});           

然后在我的SaveController中檢索它，如下

response.setContentType("application/json");
PrintWriter out = response.getWriter();
try {
    String term = request.getParameter("empData");                      
    System.out.println( term);       
} finally {
    out.close();
}

在客戶端上檢查了neturl的數據在發布后作為參數字符串發送，但在服務器端未使用getParameter進行檢索。 它返回null。

Answer 1

在閱讀了許多文章之后，使之起作用的調整是通過刪除
contentType：“ application / json; charset = utf-8”，