SpringBoot中配置Redis连接池的完整指南_Java

一、添加依赖

在 pom.xml 文件中添加以下依赖：

<dependencies>
    <dependency>
        <groupid>org.springframework.boot</groupid>
        <artifactid>spring-boot-starter-data-redis</artifactid>
    </dependency>
    <dependency>
        <groupid>org.apache.commons</groupid>
        <artifactid>commons-pool2</artifactid>
    </dependency>
</dependencies>

二、配置 redis 连接池

（一）通过 java 配置类

创建一个配置类，用于定义 redis 连接工厂和连接池配置：

import org.apache.commons.pool2.impl.genericobjectpoolconfig;
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.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.stringredisserializer;

@enablecaching
@configuration
public class redisconfig extends cachingconfigurersupport {

    @bean
    public lettuceconnectionfactory redisconnectionfactory() {
        redisstandaloneconfiguration redisstandaloneconfiguration = new redisstandaloneconfiguration();
        redisstandaloneconfiguration.sethostname("localhost");
        redisstandaloneconfiguration.setport(6379);

        genericobjectpoolconfig<object> poolconfig = new genericobjectpoolconfig<>();
        poolconfig.setmaxtotal(10); // 最大连接数
        poolconfig.setmaxidle(5); // 最大空闲连接数
        poolconfig.setminidle(1); // 最小空闲连接数
        poolconfig.setmaxwaitmillis(2000); // 获取连接的最大等待时间

        lettucepoolingclientconfiguration poolingclientconfig = lettucepoolingclientconfiguration.builder()
                .poolconfig(poolconfig)
                .build();

        return new lettuceconnectionfactory(redisstandaloneconfiguration, poolingclientconfig);
    }

    @bean
    public redistemplate<string, object> redistemplate() {
        redistemplate<string, object> template = new redistemplate<>();
        template.setconnectionfactory(redisconnectionfactory());
        template.setkeyserializer(new stringredisserializer());
        template.setvalueserializer(new stringredisserializer());
        return template;
    }
}

（二）通过 application.properties 文件

在 application.properties 文件中添加以下配置：

spring.redis.host=localhost
spring.redis.port=6379
spring.redis.database=0
spring.redis.lettuce.pool.max-active=10
spring.redis.lettuce.pool.max-idle=5
spring.redis.lettuce.pool.min-idle=1
spring.redis.lettuce.pool.max-wait=-1

三、测试 redis 操作

创建一个简单的控制器来测试 redis 的基本操作：

import org.springframework.beans.factory.annotation.autowired;
import org.springframework.data.redis.core.redistemplate;
import org.springframework.web.bind.annotation.getmapping;
import org.springframework.web.bind.annotation.requestparam;
import org.springframework.web.bind.annotation.restcontroller;

@restcontroller
public class rediscontroller {

    @autowired
    private redistemplate<string, object> redistemplate;

    @getmapping("/set")
    public string set(@requestparam string key, @requestparam string value) {
        redistemplate.opsforvalue().set(key, value);
        return "value set successfully";
    }

    @getmapping("/get")
    public string get(@requestparam string key) {
        return (string) redistemplate.opsforvalue().get(key);
    }

    @getmapping("/delete")
    public string delete(@requestparam string key) {
        redistemplate.delete(key);
        return "value deleted successfully";
    }
}

四、完整示例代码

（一）pom.xml

<dependencies>
    <dependency>
        <groupid>org.springframework.boot</groupid>
        <artifactid>spring-boot-starter-data-redis</artifactid>
    </dependency>
    <dependency>
        <groupid>org.apache.commons</groupid>
        <artifactid>commons-pool2</artifactid>
    </dependency>
</dependencies>

（二）redisconfig.java

import org.apache.commons.pool2.impl.genericobjectpoolconfig;
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.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.stringredisserializer;

@enablecaching
@configuration
public class redisconfig extends cachingconfigurersupport {

    @bean
    public lettuceconnectionfactory redisconnectionfactory() {
        redisstandaloneconfiguration redisstandaloneconfiguration = new redisstandaloneconfiguration();
        redisstandaloneconfiguration.sethostname("localhost");
        redisstandaloneconfiguration.setport(6379);

        genericobjectpoolconfig<object> poolconfig = new genericobjectpoolconfig<>();
        poolconfig.setmaxtotal(10); // 最大连接数
        poolconfig.setmaxidle(5); // 最大空闲连接数
        poolconfig.setminidle(1); // 最小空闲连接数
        poolconfig.setmaxwaitmillis(2000); // 获取连接的最大等待时间

        lettucepoolingclientconfiguration poolingclientconfig = lettucepoolingclientconfiguration.builder()
                .poolconfig(poolconfig)
                .build();

        return new lettuceconnectionfactory(redisstandaloneconfiguration, poolingclientconfig);
    }

    @bean
    public redistemplate<string, object> redistemplate() {
        redistemplate<string, object> template = new redistemplate<>();
        template.setconnectionfactory(redisconnectionfactory());
        template.setkeyserializer(new stringredisserializer());
        template.setvalueserializer(new stringredisserializer());
        return template;
    }
}

（三）application.properties

spring.redis.host=localhost
spring.redis.port=6379
spring.redis.database=0
spring.redis.lettuce.pool.max-active=10
spring.redis.lettuce.pool.max-idle=5
spring.redis.lettuce.pool.min-idle=1
spring.redis.lettuce.pool.max-wait=-1

（四）rediscontroller.java

import org.springframework.beans.factory.annotation.autowired;
import org.springframework.data.redis.core.redistemplate;
import org.springframework.web.bind.annotation.getmapping;
import org.springframework.web.bind.annotation.requestparam;
import org.springframework.web.bind.annotation.restcontroller;

@restcontroller
public class rediscontroller {

    @autowired
    private redistemplate<string, object> redistemplate;

    @getmapping("/set")
    public string set(@requestparam string key, @requestparam string value) {
        redistemplate.opsforvalue().set(key, value);
        return "value set successfully";
    }

    @getmapping("/get")
    public string get(@requestparam string key) {
        return (string) redistemplate.opsforvalue().get(key);
    }

    @getmapping("/delete")
    public string delete(@requestparam string key) {
        redistemplate.delete(key);
        return "value deleted successfully";
    }
}

总结

通过以上步骤，您已经成功配置了 spring boot 中的 redis 连接池。这种配置方式不仅提高了 redis 操作的性能，还确保了资源的高效利用。

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