PlayFramework 完整实现一个APP（十一）-java教程-PHP中文网

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添加权限控制

1.导入Secure module，该模块提供了一个controllers.Secure控制器。

/conf/application.conf

# Import the secure module
module.secure=${play.path}/modules/secure

/conf/routes

# Import Secure routes
* / module:secure

2.在Post Comment User Tag控制器上添加标签

@With(Secure.class)public class Posts extends CRUD {
}

启动Server，访问 localhost:9000/admin，如果页面报错（或编译失败），参考上一章添加CRUD模块

3.添加权限控制

创建权限控制器 /controllers/Security.java

import models.*;public class Security extends Secure.Security { static boolean authenticate(String username, String password) { return User.connect(username, password) != null;
}
}

通过 localhost:9000/logout 退出登录，使用正确的用户名密码进行登录

4.添加登录页面

创建Admin Controller

@With(Secure.class)public class Admin extends Controller {
@Before static void setConnectedUser() { if(Security.isConnected()) {
User user = User.find("byEmail", Security.connected()).first();
renderArgs.put("user", user.fullname);
}
}
public static void index() {
render();
}
}

添加路由

# Administration
GET /admin/? Admin.index
* /admin module:crud

修改main.html

<ul id="tools">
<li>
<a href="@{Admin.index()}">Log in to write something</a>
</li>
</ul>

添加/views/admin.html

<!DOCTYPE html>
<html>
<head>
<title>Administration</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
#{get ‘moreStyles‘ /}
<link rel="stylesheet" type="text/css" media="screen"
href="@{‘/public/stylesheets/main.css‘}" />
<link rel="shortcut icon" type="image/png"
href="@{‘/public/images/favicon.png‘}" />
<script src="@{‘/public/javascripts/jquery-1.4.2.min.js‘}"></script>
<script src="@{‘/public/javascripts/jquery.tools-1.2.5.toolbox.expose.min.js‘}"></script>
</head>
<body id="admin">

<div id="header">
<div id="logo">
yabe. <span>administration</span>
</div>
<ul id="tools">
<li>
<a href="@{Secure.logout()}">Log out</a>
</li>
</ul>
</div>

<div id="main">
#{doLayout /}
</div>

<p id="footer">
Yabe is a (not so) powerful blog engine built with the
<a href="http://www.playframework.org">Play framework</a>
as a tutorial application.
</p>

</body>
</html>

添加/views/Admin/index.html

#{extends ‘admin.html‘ /}

Welcome ${user}!

5.添加角色

Security控制器重写check方法

static boolean check(String profile) { if("admin".equals(profile)) { return User.find("byEmail", connected()).<User>first().isAdmin;
} return false;
}

修改admin.html，显示用户是否有admin角色

<div id="main">

<ul id="adminMenu">
<li class="${request.controller == ‘Admin‘ ? ‘selected‘ : ‘‘}">
<a href="@{Admin.index()}">My posts</a>
</li>
#{secure.check ‘admin‘}
<li class="${request.controller == ‘Posts‘ ? ‘selected‘ : ‘‘}">
<a href="@{Posts.list()}">Posts</a>
</li>
<li class="${request.controller == ‘Tags‘ ? ‘selected‘ : ‘‘}">
<a href="@{Tags.list()}">Tags</a>
</li>
<li class="${request.controller == ‘Comments‘ ? ‘selected‘ : ‘‘}">
<a href="@{Comments.list()}">Comments</a>
</li>
<li class="${request.controller == ‘Users‘ ? ‘selected‘ : ‘‘}">
<a href="@{Users.list()}">Users</a>
</li>
#{/secure.check}
</ul>

#{doLayout /}
</div>