SpringBoot-Shiro普通登录与MD5加密

RBAC 是当下权限系统的设计基础，同时有两种解释：
一： Role-Based Access Control，基于角色的访问控制
即，你要能够删除产品，那么当前用户就必须拥有产品经理这个角色
二：Resource-Based Access Control，基于资源的访问控制
即，你要能够删除产品，那么当前用户就必须拥有删除产品这样的权限

Shrio

shrio两种登录方式：1、读取shrio.ini配置文件 2、使用 DatabaseRealm（数据库连接比较）

MD5加密的时候：使用传入密码需要加密、插入语句需要加密，DatabaseRealm需要加密.

package com.company;

import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.crypto.hash.SimpleHash;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

import java.util.Set;

public class DatabaseRealm extends AuthorizingRealm {

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {

        //能进入到这里，表示账号已经通过验证了
        String userName =(String) principalCollection.getPrimaryPrincipal();
        //通过DAO获取角色和权限
        Set<String> permissions = new UserDao().listPermissions(userName);
        Set<String> roles = new UserDao().listRoles(userName);

        //授权对象
        SimpleAuthorizationInfo s = new SimpleAuthorizationInfo();
        //把通过DAO获取到的角色和权限放进去
        s.setStringPermissions(permissions);
        s.setRoles(roles);
        return s;
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        //获取账号密码
        UsernamePasswordToken t = (UsernamePasswordToken) token;
        String userName= token.getPrincipal().toString();
        String password =new String(t.getPassword());
        //获取数据库中的密码

        User user = new UserDao().getUser(userName);
        String passwordInDB = user.getPassword();
        String salt = user.getSalt();
        String passwordEncoded = new SimpleHash("md5",password,salt,2).toString();

        if(null==user || !passwordEncoded.equals(passwordInDB))
            throw new AuthenticationException();

        //认证信息里存放账号密码, getName() 是当前Realm的继承方法,通常返回当前类名 :databaseRealm
        SimpleAuthenticationInfo a = new SimpleAuthenticationInfo(userName,password,getName());
        return a;
    }

}

UserDao.java

package com.company;

import org.apache.shiro.crypto.SecureRandomNumberGenerator;
import org.apache.shiro.crypto.hash.SimpleHash;

import java.sql.*;
import java.util.HashSet;
import java.util.Set;

/**
 * @ProjectName: UserDao
 * @Package: com.company
 * @Description:
 * @Author: huyuqiao
 * @CreateDate: 2020/9/25 10:16
 */
public class UserDao {
    public UserDao(){
        try{
            Class.forName("com.mysql.cj.jdbc.Driver");
        } catch (ClassNotFoundException e){
            e.printStackTrace();
        }
    }
    public Connection getConnection() throws SQLException {
        return DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/shiro?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true&useSSL=false", "root", "root");
    }

    public String createUser(String name, String password) {

        String sql = "insert into user values(null,?,?,?)";

        String salt = new SecureRandomNumberGenerator().nextBytes().toString(); //盐量随机
        String encodedPassword= new SimpleHash("md5",password,salt,2).toString();

        try (Connection c = getConnection(); PreparedStatement ps = c.prepareStatement(sql);) {

            ps.setString(1, name);
            ps.setString(2, encodedPassword);
            ps.setString(3, salt);
            ps.execute();
        } catch (SQLException e) {

            e.printStackTrace();
        }
        return null;

    }

    public String getPassword(String userName) {
        String sql = "select password from user where name = ?";
        try (Connection c = getConnection(); PreparedStatement ps = c.prepareStatement(sql);) {

            ps.setString(1, userName);

            ResultSet rs = ps.executeQuery();

            if (rs.next())
                return rs.getString("password");

        } catch (SQLException e) {

            e.printStackTrace();
        }
        return null;
    }
    public User getUser(String userName) {
        User user = null;
        String sql = "select * from user where name = ?";
        try (Connection c = getConnection(); PreparedStatement ps = c.prepareStatement(sql);) {

            ps.setString(1, userName);

            ResultSet rs = ps.executeQuery();

            if (rs.next()) {
                user = new User();
                user.setId(rs.getInt("id"));
                user.setName(rs.getString("name"));
                user.setPassword(rs.getString("password"));
                user.setSalt(rs.getString("salt"));
            }

        } catch (SQLException e) {

            e.printStackTrace();
        }
        return user;
    }

    public Set<String> listRoles(String userName) {

        Set<String> roles = new HashSet<>();
        String sql = "select r.name from user u "
                + "left join user_role ur on u.id = ur.uid "
                + "left join Role r on r.id = ur.rid "
                + "where u.name = ?";
        try (Connection c = getConnection(); PreparedStatement ps = c.prepareStatement(sql);) {
            ps.setString(1, userName);
            ResultSet rs = ps.executeQuery();

            while (rs.next()) {
                roles.add(rs.getString(1));
            }

        } catch (SQLException e) {

            e.printStackTrace();
        }
        return roles;
    }
    public Set<String> listPermissions(String userName) {
        Set<String> permissions = new HashSet<>();
        String sql =
                "select p.name from user u "+
                        "left join user_role ru on u.id = ru.uid "+
                        "left join role r on r.id = ru.rid "+
                        "left join role_permission rp on r.id = rp.rid "+
                        "left join permission p on p.id = rp.pid "+
                        "where u.name =?";

        try (Connection c = getConnection(); PreparedStatement ps = c.prepareStatement(sql);) {

            ps.setString(1, userName);

            ResultSet rs = ps.executeQuery();

            while (rs.next()) {
                permissions.add(rs.getString(1));
            }

        } catch (SQLException e) {

            e.printStackTrace();
        }
        return permissions;
    }

    public static void main(String[] args) throws Throwable {
        System.out.println(new UserDao().listRoles("zhang3"));
        System.out.println(new UserDao().listRoles("li4"));
        System.out.println(new UserDao().listPermissions("zhang3"));
        System.out.println(new UserDao().listPermissions("li4"));
    }
}

TestShiro.java

package com.company;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;

import java.util.ArrayList;
import java.util.List;

/**
 * @ProjectName: TestShiro
 * @Package: com.company
 * @Description:
 * @Author: huyuqiao
 * @CreateDate: 2020/9/25 9:35
 */
public class TestShiro {
    public static void main(String[] args) {
        new UserDao().createUser("tom", "123");
        User user22 = new User();
        user22.setName("tom");
        user22.setPassword("123");

        if(login(user22))
            System.out.println("登录成功");
        else
            System.out.println("登录失败");

        //用户们
        User zhang3 = new User();
        zhang3.setName("zhang3");
        zhang3.setPassword("12345");

        User li4 = new User();
        li4.setName("li4");
        li4.setPassword("abcde");

        User wang5 = new User();
        wang5.setName("wang5");
        wang5.setPassword("wrongpassword");

        List<User> users = new ArrayList<>();

        users.add(zhang3);
        users.add(li4);
        users.add(wang5);
        //角色们
        String roleAdmin = "admin";
        String roleProductManager ="productManager";

        List<String> roles = new ArrayList<>();
        roles.add(roleAdmin);
        roles.add(roleProductManager);

        //权限们
        String permitAddProduct = "addProduct";
        String permitAddOrder = "addOrder";

        List<String> permits = new ArrayList<>();
        permits.add(permitAddProduct);
        permits.add(permitAddOrder);

        //登陆每个用户
        for (User user : users) {
            if(login(user))
                System.out.printf("%s 	成功登陆，用的密码是 %s	 %n",user.getName(),user.getPassword());
            else
                System.out.printf("%s 	成功失败，用的密码是 %s	 %n",user.getName(),user.getPassword());
        }

        System.out.println("-------how2j 分割线------");

        //判断能够登录的用户是否拥有某个角色
        for (User user : users) {
            for (String role : roles) {
                if(login(user)) {
                    if(hasRole(user, role))
                        System.out.printf("%s	 拥有角色: %s	%n",user.getName(),role);
                    else
                        System.out.printf("%s	 不拥有角色: %s	%n",user.getName(),role);
                }
            }
        }
        System.out.println("-------how2j 分割线------");

        //判断能够登录的用户，是否拥有某种权限
        for (User user : users) {
            for (String permit : permits) {
                if(login(user)) {
                    if(isPermitted(user, permit))
                        System.out.printf("%s	 拥有权限: %s	%n",user.getName(),permit);
                    else
                        System.out.printf("%s	 不拥有权限: %s	%n",user.getName(),permit);
                }
            }
        }
    }

    private static boolean hasRole(User user, String role) {
        Subject subject = getSubject(user);
        return subject.hasRole(role);
    }

    private static boolean isPermitted(User user, String permit) {
        Subject subject = getSubject(user);
        return subject.isPermitted(permit);
    }

    private static Subject getSubject(User user) {
        //加载配置文件，并获取工厂
        Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
        //获取安全管理者实例
        SecurityManager sm = factory.getInstance();
        //将安全管理者放入全局对象
        SecurityUtils.setSecurityManager(sm);
        //全局对象通过安全管理者生成Subject对象
        Subject subject = SecurityUtils.getSubject();

        return subject;
    }

    private static boolean login(User user) {
        Subject subject= getSubject(user);
        //如果已经登录过了，退出
        if(subject.isAuthenticated())
            subject.logout();

        //封装用户的数据
        UsernamePasswordToken token = new UsernamePasswordToken(user.getName(), user.getPassword());
        try {
            //将用户的数据token 最终传递到Realm中进行对比
            subject.login(token);
        } catch (AuthenticationException e) {
            //验证错误
            return false;
        }

        return subject.isAuthenticated();
    }

}