在Java主方法中使用安全框架,首先需要将安全框架添加到项目的依赖中。这里以使用Apache Shiro为例,介绍如何在Java主方法中使用安全框架。
在Maven项目的pom.xml文件中添加以下依赖:
<dependencies>
<!-- Apache Shiro Core -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.7.1</version>
</dependency>
<!-- Apache Shiro Spring -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.7.1</version>
</dependency>
<!-- Apache Shiro Spring Boot Starter -->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring-boot-starter</artifactId>
<version>1.7.1</version>
</dependency>
</dependencies>
在项目的resources目录下创建一个名为shiro.ini的配置文件,并添加以下内容:
[main]
# 配置安全管理器
securityManager = org.apache.shiro.mgt.DefaultSecurityManager
# 配置Realm
myRealm = com.example.shiro.MyRealm
securityManager.realms = $myRealm
# 配置缓存管理器
cacheManager = org.apache.shiro.cache.MemoryConstrainedCacheManager
securityManager.cacheManager = $cacheManager
[urls]
# 配置URL权限控制
/admin/** = authc
/user/** = authc, roles[admin]
在项目中创建一个名为MyRealm的类,继承org.apache.shiro.realm.AuthorizingRealm,并实现doGetAuthenticationInfo和doGetAuthorizationInfo方法:
package com.example.shiro;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
public class MyRealm extends AuthorizingRealm {
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
// 获取用户名和密码
String username = (String) token.getPrincipal();
String password = new String((char[]) token.getCredentials());
// 根据用户名和密码查询用户信息
User user = getUserByUsernameAndPassword(username, password);
if (user == null) {
throw new UnknownAccountException("用户名或密码错误");
}
return new SimpleAuthenticationInfo(user.getUsername(), user.getPassword(), getName());
}
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
// 获取用户角色和权限
String username = (String) principals.getPrimaryPrincipal();
User user = getUserByUsername(username);
if (user == null) {
return null;
}
SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
authorizationInfo.addRole("admin");
authorizationInfo.addStringPermission("user:view");
return authorizationInfo;
}
private User getUserByUsernameAndPassword(String username, String password) {
// 根据用户名和密码查询用户信息,这里需要实现具体的查询逻辑
return new User(username, password);
}
private User getUserByUsername(String username) {
// 根据用户名查询用户信息,这里需要实现具体的查询逻辑
return new User(username);
}
}
创建一个名为User的类,包含用户名、密码、角色和权限等属性:
public class User {
private String username;
private String password;
private String role;
private String permission;
public User(String username) {
this.username = username;
}
public User(String username, String password) {
this.username = username;
this.password = password;
}
// getter和setter方法
}
在主方法中,使用Shiro的SecurityUtils获取当前用户,并根据用户角色和权限进行相应的操作:
package com.example;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
public class Main {
public static void main(String[] args) {
// 获取当前用户
Subject currentUser = SecurityUtils.getSubject();
// 登录
currentUser.login(new UsernamePasswordToken("admin", "123456"));
// 获取当前用户的角色和权限
String username = (String) currentUser.getPrincipal();
User user = getUserByUsername(username);
if (user.getRole().equals("admin")) {
System.out.println("你是管理员,拥有查看用户权限");
} else if (user.getPermission().equals("user:view")) {
System.out.println("你拥有查看用户权限");
} else {
System.out.println("你没有查看用户权限");
}
// 登出
currentUser.logout();
}
private static User getUserByUsername(String username) {
// 根据用户名查询用户信息,这里需要实现具体的查询逻辑
return new User(username);
}
}
这样,在Java主方法中就可以使用Apache Shiro安全框架进行用户认证和授权了。
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。