ajaxSetup

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>jQuery调用token</title>
        <script src="../js/jquery-3.5.1.js" type="text/javascript" charset="utf-8"></script>
        <script src="js/com.ibaiqi.public.js" type="text/javascript" charset="utf-8"></script>
    </head>
    <body>
        <ul>
            <li><input type="button" id="btn2" onclick="loginCheck()" value="登陆查看控制台" /></li>
            <li><input type="button" id="btn2" onclick="userList()" value="查看是否授权登陆" /></li>
            <li><input type="button" id="btn2" onclick="getBaidu()" value="查看是否授权登陆baidu.com" /></li>
        </ul>
    </body>
</html>
<script type="text/javascript">
         
    $.ajaxSetup({   
        beforeSend: function(xhr) {
            // 发送请求时，带上token
            xhr.setRequestHeader("token", localStorage.getItem("token"))
             
        },
        error: function(xhr,status,error) {
            console.log(xhr);
            if (xhr.status === 401) {
                console.log("跳转到登陆页面")
                window.location.href = "./login.html"
            }
        }
    });
    /* 
        登陆与不登陆，返回不同json
     */
    function userList() {
        console.log("userlist 准备请求111");
        console.log(url);
        //读取本地存储token
        // var token=localStorage.getItem("token")
        $.ajax({
            url: baseUrl+"/api/user/list",          
            // url: "http://169.254.150.246/api/user/list",
            method: "get",
            /* headers: {
                "token": token
            }, */
            success: function(res) {
                console.log(res);
            }
        })
    }
 
     
    /* 
        登陆成功，返回token 到控制台
     */
    function loginCheck() {
        var token = localStorage.getItem("token")
        $.post(
            "http://169.254.150.246/jwt/login?username=admin&password=admin123",
            function(res) {
                console.log(res);
                //把反回过来token写入本地存储
                localStorage.setItem("token", res.token)
            }
        )
    }
 
    /* 
        请求百度
     */
    function getBaidu() {
        console.log("getBaidu.com 准备请求");
        $.get(
            "https://www.baidu.com/",
            null,
            function(res) {
                console.log(res);
            }
        )
    }
</script>