jquery & 去 : how do you set a json header

Question

如何在查询中设置 json header 。我需要它成为服务器上的字符串吗？:

...
$.ajax({
  url: '',
  headers: {
    "listkey":{"key1":"val1", "key2": "val2", "key3":"val3"}
  },
  dataType: 'json',
  cache: false,
  success: function(data) {
...

Answer 1

我相信这很简单，只需添加:

contentType: "application/json"

作为对象属性。请参阅 docs 中的 contentType 属性.

完整示例:

...
$.ajax({
    url: '',
    contentType: 'application/json',
    headers: {
      "listkey":{"key1":"val1", "key2": "val2", "key3":"val3"}
    },
    dataType: 'json',
    cache: false,
    success: function(data) {
...