Shiro认证

认证过程

代码实现

引入Shiro依赖

<!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-core -->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-core</artifactId>
    <version>1.4.0</version>
</dependency>

Java代码

package com.ledao;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.realm.SimpleAccountRealm;
import org.apache.shiro.subject.Subject;

/**
 * @author LeDao
 * @company
 * @create 2021-09-14 11:10
 */
public class Test {

    public static void main(String[] args) {
        SimpleAccountRealm simpleAccountRealm = new SimpleAccountRealm();
        //添加一个用户,参数为正确的用户名和密码
        simpleAccountRealm.addAccount("ledao", "123456");
        //构建SecurityManager环境
        DefaultSecurityManager defaultSecurityManager = new DefaultSecurityManager();
        //将用户信息放入SecurityManager环境
        defaultSecurityManager.setRealm(simpleAccountRealm);
        //主体提交认证请求
        SecurityUtils.setSecurityManager(defaultSecurityManager);
        //获取构建SecurityManager环境的当前用户
        Subject subject = SecurityUtils.getSubject();
        //设置一个token用于登录,参数分别为用户登录的用户名和密码
        UsernamePasswordToken token = new UsernamePasswordToken("ledao", "123456");
        //当前状态为未登录,所以输出false
        System.out.println("当前登录状态为:" + subject.isAuthenticated());
        try {
            //登录
            subject.login(token);
            //当前状态为登录成功,所以输出true
            System.out.println("当前登录状态为:" + subject.isAuthenticated());
            //注销登录
            subject.logout();
            System.out.println("当前登录状态为:" + subject.isAuthenticated());
        } catch (AuthenticationException e) {
            e.printStackTrace();
            System.out.println("用户名或密码错误");
        }
    }
}