AuthRealm_身份认证

authRealm_身份认证 主要继承AuthorizingRealm类
doGetAuthorizationInfo //获取用户权限或角色信息
doGetAuthenticationInfo //进行身份验证eg:用户名与password密码的校验
java的代码
 

package com.shiro.realm;


import java.util.HashSet;
import java.util.Set;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.subject.PrincipalCollection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyRealm1 extends AuthorizingRealm{

    private static final transient Logger log = LoggerFactory.getLogger(Main.class);

    /**
     * 获取身份信息，我们可以在这个方法中，从数据库获取该用户的权限和角色信息
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        log.info("----------doGetAuthorizationInfo方法被调用----------");
        String username = (String) getAvailablePrincipal(principals);
        //通过用户名从数据库获取权限字符串
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        //权限
        Set<String> s = new HashSet<String>();
        s.add("printer:print");
        s.add("printer:query");
        info.setStringPermissions(s);
        //角色
        Set<String> r = new HashSet<String>();
        r.add("role1");
        info.setRoles(r);

        return info;
    }
    /**
     * 在这个方法中，进行身份验证
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(
            AuthenticationToken token) throws AuthenticationException {
        //用户名
        String username = (String) token.getPrincipal();
        log.info("username:"+username);
        //密码
        String password = new String((char[])token.getCredentials());
        log.info("password:"+password);
        //从数据库获取用户名密码进行匹配，这里为了方面，省略数据库操作
        if(!"admin".equals(username)){
            throw new UnknownAccountException();
        }
        if(!"123".equals(password)){
            throw new IncorrectCredentialsException();
        }
        //身份验证通过,返回一个身份信息
        AuthenticationInfo aInfo = new SimpleAuthenticationInfo(username,password,getName());

        return aInfo;
    }

}