spring boot 整合 redis

使用spring 2.0 以上

注：该案例没有设置某一个key具体的设置有效的时间，如有知道的，请下方留言（感激不尽）

实体类的配置：

package com.example.redis.redis.entity;
import java.io.Serializable;
import java.util.List;
public class UserInfo implements Serializable {
    private Integer uid;
    private String username;//帐号
    private String name;//名称（昵称或者真实姓名，不同系统不同定义）
    private String password; //密码;
    private String salt;//加密密码的盐
    private byte state;//用户状态,0:创建未认证（比如没有激活，没有输入验证码等等）--等待验证的用户 , 1:正常状态,2：用户被锁定.
    private List<SysRole> roleList;// 一个用户具有多个角色
    public Integer getUid() {
        return uid;
    }
    public void setUid(Integer uid) {
        this.uid = uid;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getSalt() {
        return salt;
    }
    public void setSalt(String salt) {
        this.salt = salt;
    }
    public byte getState() {
        return state;
    }
    public void setState(byte state) {
        this.state = state;
    }
    public List<SysRole> getRoleList() {
        return roleList;
    }
    public void setRoleList(List<SysRole> roleList) {
        this.roleList = roleList;
    }
    /**
     * 密码盐.
     *
     * @return
     */
    public String getCredentialsSalt() {
        return this.username + this.salt;
    }
    //重新对盐重新进行了定义，用户名+salt，这样就更加不容易被破解
    @Override
    public String toString() {
        return "UserInfo{" +
                "uid=" + uid +
                ", username='" + username + '\'' +
                ", name='" + name + '\'' +
                ", password='" + password + '\'' +
                ", salt='" + salt + '\'' +
                ", state=" + state +
                ", roleList=" + roleList +
                '}';
    }
}

redisConfing的配置

package com.example.redis.redis.config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.stream.Collectors;
@Configuration
@EnableCaching
@Cacheable()
public class redisConfig extends CachingConfigurerSupport {
    @Value("${spring.redis.host}")
    private String host;
    @Value("${spring.redis.port}")
    private int port;
    @Value("${spring.redis.timeout}")
    private int timeout;
//
//    /**
//     * 用于生成主键的策略
//     *
//     * @return
//     */
    @Bean
    public KeyGenerator wiselyKeyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append("." + method.getName());
                if (params == null || params.length == 0 || params[0] == null) {
                    return null;
                }
                String join = String.join("&", Arrays.stream(params).map(Object::toString).collect(Collectors.toList()));
                String format = String.format("%s{%s}", sb.toString(), join);
                //log.info("缓存key：" + format);
                return "a2";
            }
        };
    }
}

controller

package com.example.redis.redis.controller;
import com.example.redis.redis.userServer.UserInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import java.util.HashMap;
import java.util.Map;
@Component
public class controller {
    @Autowired
    private UserInfo userInfo;
    public void add() {
        com.example.redis.redis.entity.UserInfo admin = userInfo.findByUsername("admin");
    }
    public void update(){
        Map<Object, Object> map = new HashMap<>();
        map.put("admin","admin");
        map.put("name","管理员1");
        userInfo.updateByusername(map);
    }
}

Mapper

package com.example.redis.redis.Dao;
import com.example.redis.redis.entity.UserInfo;
import org.apache.ibatis.annotations.Param;
import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Component;
import java.util.Map;
@org.apache.ibatis.annotations.Mapper
@Component
 // 表示该类中可能有多个缓存，有些缓存可能是一致的
public interface Mapper {
     UserInfo findByUsername(@Param("username") String username);
     void updateByusername( Map map );
}

serverimpl

package com.example.redis.redis.userServer.impl;
import com.example.redis.redis.Dao.Mapper;
import com.example.redis.redis.entity.UserInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import java.util.Map;
@Service
//@CacheConfig(cacheNames = "users")
public class UserInfoImpl implements com.example.redis.redis.userServer.UserInfo {
    @Autowired
    private Mapper mapper;
    @Override
    @Cacheable(value = "all2", keyGenerator = "wiselyKeyGenerator")
    public UserInfo findByUsername(String name) {
        UserInfo mapperByUsername = mapper.findByUsername(name);
        System.out.println("数据库读取数据....");
        return mapperByUsername;
    }
    @Override
    @CacheEvict(value = "all2",allEntries = true) // 在使用删除的时候，需要全部清除，如果一条一条的清除，效率会很低
    public void updateByusername(Map map) {
        mapper.updateByusername(map);
    }
}

service接口

package com.example.redis.redis.userServer;
import java.util.Map;
public interface UserInfo {
    com.example.redis.redis.entity.UserInfo findByUsername(String admin);
    void updateByusername(Map map );
}

Application

package com.example.redis.redis;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
@SpringBootApplication
@EnableCaching // 启动缓存
public class RedisApplication {
    public static void main(String[] args) {
        SpringApplication.run(RedisApplication.class, args);
    }
    /**
     * 重新配置RedisCacheManager
     *
     * @param rd
     */
}

Mapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org/DTD Mapper 3.0" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.redis.redis.Dao.Mapper">
    <resultMap id="map" type="com.example.redis.redis.entity.UserInfo">
        <id property="uid" column="uid"></id>
        <result property="username" column="username"></result>
        <result property="name" column="name"></result>
        <result property="password" column="password"></result>
        <result property="salt" column="salt"></result>
        <result property="state" column="state"></result>
        <!--id,description,role,available-->
        <collection property="roleList" ofType="com.example.redis.redis.entity.SysRole">
            <id property="id" column="id"></id>
            <result property="role" column="role"></result>
            <result property="description" column="description"></result>
            <result property="available" column="available"></result>
            <!--id,name,resourceType,url,permission,parentId,parentIds,available-->
            <collection property="permissions" ofType="com.example.redis.redis.entity.SysPermission">
                <id property="id" column="id"></id>
                <result property="name" column="name"></result>
                <result property="resourceType" column="resourceType"></result>
                <result property="url" column="url"></result>
                <result property="permission" column="permission"></result>
                <result property="parentId" column="parentId"></result>
                <result property="parentIds" column="parentIds"></result>
                <result property="available" column="available"></result>
            </collection>
        </collection>
    </resultMap>
    <select id="findByUsername" parameterType="java.lang.String" resultMap="map">
        SELECT *
        FROM user_info
        INNER JOIN sys_user_role ON user_info.uid = sys_user_role.uid
        INNER JOIN sys_role ON role_id = sys_role.id
        INNER JOIN sys_role_permission ON sys_role.id = sys_role_permission.role_id
        INNER JOIN sys_permission ON permissionid = sys_role_permission.id
        <where>
            <if test="username != null and username !=''">
                username = #{username} group by username
            </if>
        </where>
    </select>
    <!--<select id="findByUsername" parameterType="java.lang.String" resultType="com.sgqing.demo.entity.UserInfo">-->
    <!--SELECT *-->
    <!--FROM user_info-->
    <!--WHERE username = #{username}-->
    <!--</select>-->
    <update id="updateByusername" parameterType="java.util.Map">
        UPDATE user_info ui
        SET ui.name = #{name}
        WHERE ui.username = #{admin}
    </update>
</mapper>

application.yml

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&serverTimezone=UTC
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver
  redis:
    database: 0
    host: 127.0.0.1
    port: 6379
    password:
    jedis:
      pool:
        max-active: 8
        max-wait: -1
        min-idle: 0
        max-idle: 8
    timeout: 1000
  jpa:
    show-sql: true
server:
  port: 8081
mybatis:
  typeAliasesPackage: com.example.redis.redis.Dao
  mapperLocations: classpath:mapper/*.xml

Test 测试

package com.example.redis.redis.controller;
import com.example.redis.redis.userServer.UserInfo;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@RunWith(SpringRunner.class)
@SpringBootTest
public class controllerTest {
    @Autowired
    private UserInfo userInfo;
//    @Autowired
//    StringRedisTemplate stringRedisTemplate;
//    @Resource(name = "stringRedisTemplate")
//    ValueOperations<String, String> valOpsStr;
//    @Autowired
//    RedisTemplate<Object, Object> redisTemplate;
//
//    @Resource(name = "redisTemplate")
//    ValueOperations<Object, Object> valOps;
    @Test
    public void test() {
        com.example.redis.redis.entity.UserInfo admin = userInfo.findByUsername("admin");
        System.out.println(admin);
    }
    @Test
    public void test2() {
        Map<String, String> map = new HashMap<>();
        map.put("name", "管理员5");
        map.put("admin", "admin");
        userInfo.updateByusername(map);
    }
}

如果不设置key的生成策略，可以只在application中开启缓存即可使用缓存的注解

效果

参考网址

https://blog.csdn.net/hry2015/article/details/75451705

用于设置不同的数据不同的缓存时间

@Cacheable(value = "people#${select.cache.timeout:1800}#${select.cache.refresh:600}", key = "#person.id", sync = true)

value属性上用#号隔开，第一个是原始的缓存容器名称，第二个是缓存的有效时间，第三个是缓存的自动刷新时间，单位都是秒

时间的设置如果存储在数据库中，可以首先将数据读取出来，用@ModelAttribute 注解，该注解会在当前类的所有的方法被调用之前执行，所以在请求方法很多的时候，该方法需要慎用，如果想要在所有的类，不只局限于当前类的所有的请求方法之前添加

@ModelAttribute 注解的方法，则需要在当前类上面添加@ControllerAdvice  参考网址https://www.cnblogs.com/magicalSam/p/7198420.html

2019-1-31

了解到，如果要单独设置每个属性的单独的时间，可以参考该网址

https://segmentfault.com/q/1010000015203664/a-1020000015209787