SpringBoot Learn - 5 Redis integration

SpringBoot project visit Redis There are two main ways: JedisPool and RedisTemplate, as used herein, JedisPool

1, pom.xml Add depend

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.9.0</version>
    <scope>compile</scope>
</dependency>

2, following a package tools, new utils JedisPoolUtil, only the first string read package

package com.jgui.utils;

import com.jgui.config.RedisConfig;
import lombok.Data;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

/**
 * @Author: zhaogaojian
 * @Description:
 * @Date: Created in 2020/1/821:54
 */
@Component
public class JedisPoolUtil {
    private  JedisPool jedisPool=null;
    @Autowired
    private  RedisConfig redisConfig;
    @Bean
    private  JedisPool getJedisPool() {
        if(jedisPool==null)
        {
            JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
            jedisPoolConfig.setMaxTotal(redisConfig.getPoolMaxTotal());
            jedisPoolConfig.setMaxIdle(redisConfig.getPoolMaxIdle());
            jedisPoolConfig.setMaxWaitMillis(redisConfig.getPoolMaxWait());
            jedisPool=new JedisPool(jedisPoolConfig, redisConfig.getHost(),redisConfig.getPort(),redisConfig.getTimeout()*1000,redisConfig.getPassword(),0);
        }
        return jedisPool;
    }
    public  String set(String key,String value, int cacheSeconds)
    {
        String strRet = null;
        Jedis jedis =null;
        try {
            jedis = getJedisPool().getResource();
            strRet=jedis.set(key,value);
            if (cacheSeconds != 0) {
                jedis.expire(key, cacheSeconds);
            }
        } catch (Exception e) {
            //logger.error(e.getMessage(), e);
        } finally {
            if (jedis != null)
                jedis.close (); // Note that this is not close the connection, in JedisPool mode, Jedis will be returned to the resource pool. 
        }
         Return strRet;
    }
    public  String get(String key)
    {
        String strRet=null;
        Jedis jedis =null;
        try {
            jedis = getJedisPool().getResource();
            strRet=jedis.get(key);
        } catch (Exception e) {
            //logger.error(e.getMessage(), e);
        } finally {
            if (jedis != null)
                jedis.close (); // Note that this is not close the connection, in JedisPool mode, Jedis will be returned to the resource pool. 
        }
         Return strRet;
    }
}

3, Config File New RedisConfig

package com.jgui.config;

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * @Author: zhaogaojian
 * @Description:
 * @Date: Created in 2020/1/822:51
 */
@Data
@Component
@ConfigurationProperties (prefix = "Redis") // The same configuration information is automatically encapsulated entity class 
public  class RedisConfig {
     Private String Host = "127.0.0.1" ;
     Private Integer Port = 6379 ;
     Private Integer = timeout. 3;   // sec 
    Private String password = "123456" ;

    private Integer poolMaxTotal = 10 ;
    private Integer poolMaxIdle = 10 ;
    private Integer poolMaxWait = 3; // 秒 
}

4, application.properties increase configuration section

# -------------------- Jedis configuration -------------------
redis.host=127.0.0.1
redis.port = 6379
#second
redis.timeout=5 
redis.password=123456
redis.poolMaxTotal = 10
redis.poolMaxIdle = 10
#second
redis.poolMaxWait = 3

5, modify the test hello

    @Autowired
    private JedisPoolUtil jedisPoolUtil;
    @RequestMapping("/hello")
    public String hello() {

        String ret=jedisPoolUtil.set("111","123",60);
        String ret1=jedisPoolUtil.get("111");
        return ret1;
        //return userDao.selectByPrimaryKey(1).getRealname();
        //return "Hello World11";
    }

6, interceptor increase hello exclusion

public void addInterceptors(InterceptorRegistry registry){
        List<String> excludePath = new ArrayList<>();
        excludePath.add("/login"); //登录
        excludePath.add("/hello"); //测试
        registry.addInterceptor(tokenInterceptor)
                .addPathPatterns("/**")
                .excludePathPatterns(excludePath);
        WebMvcConfigurer.super.addInterceptors(registry);

    }

7, run tests, return to 123, works fine

 

 Above reference

https://www.jianshu.com/p/df57fefe0ab7

https://www.jdon.com/51938

https://blog.csdn.net/MRA__S__/article/details/82051538

https://blog.csdn.net/damanchen/article/details/103770222

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