$.ajax({
    url: 'http://www.baidu.com',
    type: 'get',
    data: JSON.stringify({"name":"love python!"}),
    // 方法一：设置headers请求头参数
    headers: {"Content-Type": "application/x-www-form-urlencoded", "Accept": "text/plain"},
    success: function (data) {
        console.log(data)
    },
    error: function (XMLHttpRequest, textStatus, errorThrown) {
        console.log(XMLHttpRequest.status);
        console.log(XMLHttpRequest.readyState);
    },
    complete: function(XMLHttpRequest, status) { } // 请求完成后最终执行参数
});

$.ajax({
    url: 'http://www.baidu.com',
    type: 'get',
    data: JSON.stringify({"name":"love python!"}),
    ContentType: "application/x-www-form-urlencoded"
    // 方法二：设置headers请求头参数
    beforeSend: function(request) {
        request.setRequestHeader("Accept", "text/plain");
        request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    },
    success: function (data) {
        console.log(data)
    },
    error: function (XMLHttpRequest, textStatus, errorThrown) {
        console.log(XMLHttpRequest.status);
        console.log(XMLHttpRequest.readyState);
        console.log(textStatus);
    },
    complete: function(XMLHttpRequest, status) { } // 请求完成后最终执行参数
});