shiro整合mybatis

1.导包

<!--        整合mybatis-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.7.1</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.6</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.2.0</version>
        </dependency>

2.pojo

• User

@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
   private int id;
   private String name;
   private String pwd;
}

3.mapper （dao）层

• UserMapper

@Repository
@Mapper
public interface UserMapper {
    public User queryUserByName(String name);
}

4.application.yml

• 连接数据库

spring:
  datasource:
    #1.JDBC
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
    username: root
    password: root
    druid:
      #2.连接池配置
      #初始化连接池的连接数量 大小，最小，最大
      initial-size: 5
      min-idle: 5
      max-active: 20
      #配置获取连接等待超时的时间
      max-wait: 60000
      #配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
      time-between-eviction-runs-millis: 60000
      # 配置一个连接在池中最小生存的时间，单位是毫秒
      min-evictable-idle-time-millis: 30000
      validation-query: SELECT 1 FROM DUAL
      test-while-idle: true
      test-on-borrow: true
      test-on-return: false
      # 是否缓存preparedStatement，也就是PSCache  官方建议MySQL下建议关闭   个人建议如果想用SQL防火墙 建议打开
      pool-prepared-statements: true
      max-pool-prepared-statement-per-connection-size: 20
      # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
      filter:
        stat:
          merge-sql: true
          slow-sql-millis: 5000
      #3.基础监控配置
      web-stat-filter:
        enabled: true
        url-pattern: /*
        #设置不统计哪些URL
        exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"
        session-stat-enable: true
        session-stat-max-count: 100
      stat-view-servlet:
        enabled: true
        url-pattern: /druid/*
        reset-enable: true
        #设置监控页面的登录名和密码
        login-username: admin
        login-password: 123456
        allow: 127.0.0.1
        #deny: 192.168.1.100

5.application.properties

#整合mybaits
mybatis.type-aliases-package=com.tian.pojo
mybatis.mapper-locations=classpath:mapper/*.xml

6.UserMapper.xml

• 建在resources / mapper / UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--namespace 绑定一个对应的dao/mapper文件-->
<mapper namespace="com.tian.mapper.UserMapper">

    <select id="queryUserByName" parameterType="String" resultType="User">
       select  * from user  where name=#{name}
    </select>

</mapper>

7.UserService

public interface UserService {
    public User queryUserByName(String name);
}

8.UserServiceImpl

@Service
public class UserServiceImpl implements UserService{
    @Autowired
    private UserMapper userMapper;
    @Override
    public User queryUserByName(String name) {
     return userMapper.queryUserByName(name);
    }
}

9.测试

   @Autowired
    private UserService userService;

    @Test
    void contextLoads() {
        User user = userService.queryUserByName("张三");
        System.out.println(user);
    }

10.config

• UserRealm
• 开始用数据库登录认证

//自定义的UserRealm
public class UserRealm extends AuthorizingRealm {
    @Autowired
    UserService userService;

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了授权");
        return null;
    }
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("执行了认证");

        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        //连接真实数据库
        User user = userService.queryUserByName(userToken.getUsername());
        if(user==null){
            return null; //UnknownAccountException
        }
        //密码认证: shiro做~ , 加密了
        return new SimpleAuthenticationInfo("",user.getPwd(),"");
    }
}

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