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<!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>
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原文：https://www.cnblogs.com/asplover/p/14744521.html