zuul权限校验/order/create 只能买家访问/order/finish 只能卖家访问
after you're all signed in, you're ready to create a session to
resource:该用户可以使用数据库的资源;create session:会话的权利)
grant create session to 用户名;//给用户授权之后才能登陆
在html中使用javascript
Tips:Do Not Provide
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