src/main/java/com/byh/biyesheji/realm/AdminDatabaseRealm.java

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package com.byh.biyesheji.realm;

import com.byh.biyesheji.pojo.User;
import com.byh.biyesheji.service.PermissionService;
import com.byh.biyesheji.service.RoleService;
import com.byh.biyesheji.service.UserService;
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;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.Set;

/**
 * 管理员权限验证realm
 */
public class AdminDatabaseRealm extends AuthorizingRealm {

    @Autowired
    private UserService userService;
    @Autowired
    private RoleService roleService;
    @Autowired
    private PermissionService permissionService;

    @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service获取角色和权限
        Set<String> permissions = permissionService.listPermissions(userName);
        Set<String> roles = roleService.listRoleNames(userName);

        //授权对象
        SimpleAuthorizationInfo s = new SimpleAuthorizationInfo();
        //把通过service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();
        //获取数据库中的密码
        User user =userService.getByName(userName);
        String passwordInDB = user.getPassword();
        String salt = user.getSalt();
        //盐放进去
        //这样通过spirng-shiro.xml里配置的 HashedCredentialsMatcher 进行自动校验
        //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 :AdminDatabaseRealm
        SimpleAuthenticationInfo a = new SimpleAuthenticationInfo(userName,passwordInDB,ByteSource.Util.bytes(salt),getName());
        return a;
    }
}