springBoot配置Redis多数据源+完整测试

前言： 项目：springboot2.0.5 + redis + swagger2 测试目的：配置redis多数据源 配置数据源个数: 这里配置了双数据源，可以复制配置多数据源。

这里的测试，可以直接拿到项目中使用，可以无脑复制及使用！

1、配置依赖 pom.xml

<dependencies>
   <!--redis依赖-->
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
      <version>2.0.5.RELEASE</version>
   </dependency>
   <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
   </dependency>

   <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
       <version>1.16.18</version>
      <optional>true</optional>
   </dependency>

   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version>2.0.5.RELEASE</version>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-tomcat</artifactId>
      <version>2.0.5.RELEASE</version>
      <scope>provided</scope>
   </dependency>
   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <version>2.0.5.RELEASE</version>
      <scope>test</scope>
   </dependency>

   <!--集成swagger-API-->
   <dependency>
      <groupId>io.swagger</groupId>
      <artifactId>swagger-models</artifactId>
      <version>1.5.21</version>
      <scope>compile</scope>
   </dependency>
   <dependency>
      <groupId>io.swagger</groupId>
      <artifactId>swagger-annotations</artifactId>
      <version>1.5.21</version>
      <scope>compile</scope>
   </dependency>
   <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger-ui</artifactId>
      <version>2.9.2</version>
   </dependency>
   <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger2</artifactId>
      <version>2.9.2</version>
      <exclusions>
         <exclusion>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-models</artifactId>
         </exclusion>
         <exclusion>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-annotations</artifactId>
         </exclusion>
      </exclusions>
   </dependency>
   </dependencies>

2、redis配置 application.yml

# 主配置文件主要用来存放公共设置，不受环境配置影响
server:
  port: 8080
  servlet:
    context-path: /springboot-test-redis2
spring:
  redis:
    database: 6   # Redis数据库索引（默认为0）
    host: 127.0.0.1  # Redis服务器地址
    port: 6379         # Redis服务器连接端口
    password:    # Redis服务器连接密码（默认为空）
    max-wait: 30000    # 连接池最大阻塞等待时间（使用负值表示没有限制）
    max-active: 100   # 连接池最大连接数（使用负值表示没有限制）
    max-idle: 20     # 连接池中的最大空闲连接
    min-idle: 0     # 连接池中的最小空闲连接
    timeout: 5000  # 连接超时时间（毫秒）
  #自定义配置
  redis2:
    database: 5   # Redis数据库索引（默认为0）
    host: 192.168.2.169  # Redis服务器地址，若测试也可以用127.0.0.1本地的redis，因为database索引库用的不是一个
    port: 6379         # Redis服务器连接端口
    password:    # Redis服务器连接密码（默认为空）
    timeout: 5000  # 连接超时时间（毫秒）
    

3、在config文件下配置redis多实例

RedisConfig.ava

package com.dist.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisPassword;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.util.ObjectUtils;

import java.time.Duration;

/**设置Redis多实例的基类
 * @author zhengja@dist.com.cn
 * @data 2019/7/29 10:17
 */
@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport{

    /**
     * 数据源1 默认配置(127.0.0.1) redis template
     *
     * @param redisConnectionFactory
     * @return
     */
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        return createRedisTemplate(redisConnectionFactory);
    }

    /**
     * 数据源2 redis template
     */
    @Bean
    public RedisTemplate redisTemplate2(
            @Value("${spring.redis2.database}") int database,
            @Value("${spring.redis.timeout}") long timeout,
            @Value("${spring.redis.max-active}") int maxActive,
            @Value("${spring.redis.max-wait}") int maxWait,
            @Value("${spring.redis.max-idle}") int maxIdle,
            @Value("${spring.redis.min-idle}") int minIdle,

            @Value("${spring.redis2.host}") String hostName,
            @Value("${spring.redis2.port}") int port,
            @Value("${spring.redis2.password}") String password) {

        /* ========= 基本配置 ========= */
        RedisStandaloneConfiguration configuration = new RedisStandaloneConfiguration();
        configuration.setHostName(hostName);
        configuration.setPort(port);
        configuration.setDatabase(database);
        if (!ObjectUtils.isEmpty(password)) {
            RedisPassword redisPassword = RedisPassword.of(password);
            configuration.setPassword(redisPassword);
        }

        /* ========= 连接池通用配置 ========= */
        GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
        genericObjectPoolConfig.setMaxTotal(maxActive);
        genericObjectPoolConfig.setMinIdle(minIdle);
        genericObjectPoolConfig.setMaxIdle(maxIdle);
        genericObjectPoolConfig.setMaxWaitMillis(maxWait);

        /* ========= jedis pool ========= */
        /*
        JedisClientConfiguration.DefaultJedisClientConfigurationBuilder builder = (JedisClientConfiguration.DefaultJedisClientConfigurationBuilder) JedisClientConfiguration
                .builder();
        builder.connectTimeout(Duration.ofSeconds(timeout));
        builder.usePooling();
        builder.poolConfig(genericObjectPoolConfig);
        JedisConnectionFactory connectionFactory = new JedisConnectionFactory(configuration, builder.build());
        // 连接池初始化
        connectionFactory.afterPropertiesSet();
        */

        /* ========= lettuce pool ========= */
        LettucePoolingClientConfiguration.LettucePoolingClientConfigurationBuilder builder = LettucePoolingClientConfiguration.builder();
        builder.poolConfig(genericObjectPoolConfig);
        builder.commandTimeout(Duration.ofSeconds(timeout));
        LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory(configuration, builder.build());
        connectionFactory.afterPropertiesSet();

        /* ========= 创建 template ========= */
        return createRedisTemplate(connectionFactory);
    }

    /**
     * json 实现 redisTemplate
     * <p>
     * 该方法不能加 @Bean 否则不管如何调用，connectionFactory都会是默认配置
     *
     * @param redisConnectionFactory
     * @return
     */
    public RedisTemplate createRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

/*
Redis 连接池: Lettuce、Jedis 比较

Jedis:
Jedis在实现上是直接连接的redis server，如果在多线程环境下是非线程安全的，这个时候只有使用连接池，为每个Jedis实例增加物理连接

Lettuce:
Lettuce的连接是基于Netty的，连接实例（StatefulRedisConnection）可以在多个线程间并发访问，应为StatefulRedisConnection是线程安全的，所以一个连接实例（StatefulRedisConnection）就可以满足多线程环境下的并发访问，当然这个也是可伸缩的设计，一个连接实例不够的情况也可以按需增加连接实例。
lettuce主要利用netty实现与redis的同步和异步通信。
 */
}

4、配置Swagger2Config

用于测试接口，好调试。

package com.dist.config;

import com.google.common.base.Predicate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * @author yangmin
 * @date 2018/8/15
 * @desc
 */
@Configuration
@EnableSwagger2
public class Swagger2Config {
    @Bean
    public Docket adminApi(){
        return new Docket(DocumentationType.SWAGGER_2)
                .groupName("Admin API")
                .forCodeGeneration(true)
                .pathMapping("/")
                .select()
                .paths(paths())
                .build()
                .apiInfo(apiInfo())
                .useDefaultResponseMessages(false);
    }

    private Predicate<String> paths(){
        return PathSelectors.regex("^/(?!error).*$");
    }

    private ApiInfo apiInfo(){
        Contact contact = new Contact("BaiDu", "controller://baidu.com", " zhengja@dist.com.cn");
        return new ApiInfoBuilder()
                .title("个人SpringBoot测试系统")
                .description("开发API文档")
                .contact(contact)
                .version("1.0")
                .build();
    }
}

5、配置Redis的工具类

这里要配置两份，每份对应不同的数据源。

1.数据源一对应的工具类：RedisUtil-redisTemplate

package com.dist.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

/**
 * 默认 redisTemplate封装
 * @author zhengja@dist.com.cn
 * @data 2019/7/29 10:17
 */
@Component
public class RedisUtil {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    public RedisUtil(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    /**
     * 普通缓存获取
     * @param key 键
     * @return 值
     */
    public Object get(String key){
        return key==null?null:redisTemplate.opsForValue().get(key);
    }

    /**
     * 普通缓存放入
     * @param key 键
     * @param value 值
     * @return true成功 false失败
     */
    public boolean set(String key,Object value) {
        try {
            redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

}

2.数据源一对应的工具类：RedisUtil2-redisTemplate2

package com.dist.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

/**
 * 数据源2 redisTemplate2封装
 * @author zhengja@dist.com.cn
 * @data 2019/7/29 10:17
 */
@Component
public class RedisUtil2 {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate2;

    public RedisUtil2(RedisTemplate<String, Object> redisTemplate2) {
        this.redisTemplate2 = redisTemplate2;
    }

    /**
     * 普通缓存获取
     * @param key 键
     * @return 值
     */
    public Object get(String key){
        return key==null?null:redisTemplate2.opsForValue().get(key);
    }

    /**
     * 普通缓存放入
     * @param key 键
     * @param value 值
     * @return true成功 false失败
     */
    public boolean set(String key,Object value) {
        try {
            redisTemplate2.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

}

6、测试Redis配置的双数据源

Controller.java 接口层

package com.dist.controller;

import com.dist.util.RedisUtil;
import com.dist.util.RedisUtil2;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author zhengja@dist.com.cn
 * @data 2019/7/29 10:41
 */
@Api(tags = {"RedisController"},description = "redis双数据源测试")
@RequestMapping(value = "rest/redis")
@RestController
@Slf4j
public class RedisController {

    /**
     * 封装的工具类：默认 127.0.0.1
     */
    @Autowired
    RedisUtil redisUtil;

    /**
     * 封装的工具类2：192.168.2.169
     */
    @Autowired
    RedisUtil2 redisUtil2;

    @ApiOperation(value = "redis数据源1",httpMethod = "GET")
    @RequestMapping(value = "v1/redis1",method = RequestMethod.GET)
    public Object redis1(@ApiParam(value = "reids key值") @RequestParam String key,
                         @ApiParam(value = "redis value值") @RequestParam String value){
        boolean set = redisUtil.set(key, value);
        log.info("保存结果："+set);
        if (set){
            return redisUtil.get(key);
        }
        return null;
    }

    @ApiOperation(value = "redis数据源2",httpMethod = "GET")
    @RequestMapping(value = "v2/redis2",method = RequestMethod.GET)
    public Object redis2(@ApiParam(value = "reids key值") @RequestParam String key,
                         @ApiParam(value = "redis value值") @RequestParam String value){
        boolean set = redisUtil2.set(key, value);
        log.info("保存结果："+set);
        if (set){
            return redisUtil2.get(key);
        }
        return null;
    }

}

7、启动swagger页面测试

#####1.在resources/static下创建index.html，内容如下： index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>springboot-test-redis2</title>
</head>
<body>
<h1>首页面</h1>

<h2>springboot-test-redis2</h2>

<a href="http://localhost:8080/springboot-test-redis2/swagger-ui.html">进入swagger页面测试</a>
</body>
</html>

这个项目地址改成自己的项目访问地址：http://localhost:8080/springboot-test-redis2 #####2.访问index.html页面：

#####3.点击进入swagger页面测试

#####4.测试这两个数据源存数据和取数据 ######数据源1-测试：

######数据源2-测试：

双数据源配置、测试成功！ 双数据源还不满足你的业务要求，可以在RedisConfig继续新增数据源配置！