springboot源码解析-管中窥豹系列之自动装配（九） (4)

方法是封装好的RedisTemplate

@ConfigurationProperties(prefix = "spring.redis") public class RedisProperties { private int database = 0; private String url; private String host = "localhost"; private String password; private int port = 6379; private boolean ssl; private Duration timeout; private String clientName; private Sentinel sentinel; private Cluster cluster; ... }

RedisOperations这个类在哪呢？下面这个jar里面

<dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> </dependency>

这个依赖又怎么加载进springboot呢？

<?xml version="1.0" encoding="UTF-8"?> <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 " xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starters</artifactId> <version>2.0.8.RELEASE</version> </parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> <version>2.0.8.RELEASE</version> <name>Spring Boot Data Redis Starter</name> <description>Starter for using Redis key-value data store with Spring Data Redis and the Lettuce client</description> <url>https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-data-redis</url> <organization> <name>Pivotal Software, Inc.</name> <url>https://spring.io</url> </organization> <licenses> <license> <name>Apache License, Version 2.0</name> <url></url> </license> </licenses> <developers> <developer> <name>Pivotal</name> <email>info@pivotal.io</email> <organization>Pivotal Software, Inc.</organization> <organizationUrl></organizationUrl> </developer> </developers> <scm> <connection>scm:git:git://github.com/spring-projects/spring-boot.git/spring-boot-starters/spring-boot-starter-data-redis</connection> <developerConnection>scm:git:ssh://git@github.com/spring-projects/spring-boot.git/spring-boot-starters/spring-boot-starter-data-redis</developerConnection> <url></url> </scm> <issueManagement> <system>Github</system> <url>https://github.com/spring-projects/spring-boot/issues</url> </issueManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> <version>2.0.8.RELEASE</version> <scope>compile</scope> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-redis</artifactId> <version>2.0.13.RELEASE</version> <scope>compile</scope> <exclusions> <exclusion> <artifactId>jcl-over-slf4j</artifactId> <groupId>org.slf4j</groupId> </exclusion> </exclusions> </dependency> <dependency> <groupId>io.lettuce</groupId> <artifactId>lettuce-core</artifactId> <version>5.0.5.RELEASE</version> <scope>compile</scope> </dependency> </dependencies> </project>

spring-boot-starter-data-redis这个依赖里面有

到此，已经很清楚了，我们总结一下：

通过@SpringBootApplication注解引入@EnableAutoConfiguration注解

通过@EnableAutoConfiguration注解引入AutoConfigurationImportSelector

进入AutoConfigurationImportSelector的selectImports方法

通过SpringFactoriesLoader把所有的EnableAutoConfiguration加载进来

这些自动装配的类还有一道@ConditionalOnClass拦着，必须加载相应的jar才能加载进springboot, 实现可插拔

我们使用就两步，加载相应的依赖，写好配置

目录：
springboot源码解析-管中窥豹系列