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07-SpringBoot的自动装配应用案例练习

2022-07-04 03:00:06 阅读：161 来源： 互联网

标签：装配 07 boot redis springframework jedis import org SpringBoot

七、SpringBoot的自动装配应用案例练习（结合Redis）

7.1、案例描述

需求
- 自定义redis-starter。要求当导入redis坐标时，SpringBoot自动创建Jedis的Bean

7.2、案例实现

7.2.1、实现步骤

1、创建工程导入依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.coolman</groupId>
    <artifactId>SpringBoot-Redis-Test</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <parent>
        <artifactId>spring-boot-parent</artifactId>
        <groupId>org.springframework.boot</groupId>
        <version>2.5.0</version>
    </parent>

    <!--依赖管理-->
    <dependencies>
        <!--导入Spring的容器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <!--导入jedis-->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.3</version>
        </dependency>

        <!--SpringBoot测试启动器-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>

        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>
</project>

2、编写jedis属性配置类

package com.coolman.config;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties("myredis")
@Data
public class RedisProperties {

    private Integer port;

    private String host;
}

3、编写application.yml，编写redis的配置属性
- ```
myredis:
  host: 127.0.0.1
  port: 6379
```

4、编写jedis自动配置类

package com.coolman.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.Jedis;

@EnableConfigurationProperties(RedisProperties.class)   //加载 redis属性配置
@Configuration  //声明是一个配置类
public class RedisConfiguration {

    @Autowired
    private RedisProperties redisProperties;

    @Bean
    public Jedis getJedis(){
        return new Jedis(redisProperties.getHost(), redisProperties.getPort());
    }
}

5、执行测试案例

package com.coolman;

import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import redis.clients.jedis.Jedis;

@Slf4j
@SpringBootTest
public class AppTest {

    @Autowired
    private Jedis jedis;

    @Test
    public void test01() {
        jedis.set("name", "coolman");

        log.info("从redis读取到的数据：" + jedis.get("name"));
    }

}

测试结果

7.3、总结

自定义启动器的步骤
- ①、导入依赖
- ②、编写属性配置类
- ③、编写application.yaml配置文件，编写redis的配置属性
- ④、编写自动配置类

标签：装配,07,boot,redis,springframework,jedis,import,org,SpringBoot
来源： https://www.cnblogs.com/OnlyOnYourself-lzw/p/16441531.html