参考:
https://juejin.im/entry/5b447cbbe51d45199566f752
https://www.baeldung.com/spring-boot-custom-starter
项目结构
子模块 mystarter (自定义starter)
- pom
<?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">
<parent>
<artifactId>lesson1</artifactId>
<groupId>com.xh.sb.learn.lesson1</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<packaging>jar</packaging>
<modelVersion>4.0.0</modelVersion>
<groupId>com.xh.sb.learn.lesson1.mystarter</groupId>
<artifactId>mystarter</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>2.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<version>2.1.4.RELEASE</version>
<optional>true</optional>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
注意:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<version>2.1.4.RELEASE</version>
<optional>true</optional>
</dependency>
不加会在使用@ConfigurationProperties 报错
spring boot Configuration Annotation Proessor not found in classpath
- RedisProperties.java
@ConfigurationProperties(prefix = "redis.starter")
public class RedisProperties {
private String host;
private int port;
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
}
- RedisAutoConfiguration.java
@Configuration
@ConditionalOnClass(Jedis.class) // 存在Jedis这个类才装配当前类
@EnableConfigurationProperties(RedisProperties.class)
public class RedisAutoConfiguration {
@Bean("jedis")
@ConditionalOnMissingBean // 没有Jedis这个类才进行装配
public Jedis jedis(RedisProperties redisProperties) {
return new Jedis(redisProperties.getHost(), redisProperties.getPort());
}
}
- spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=
com.xh.sb.learn.lesson1.mystarter.config.RedisAutoConfiguration
注意:
必须加
子模块 test4starter
- pom
<?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">
<parent>
<artifactId>lesson1</artifactId>
<groupId>com.xh.sb.learn.lesson1</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.xh.sb.learn.lesson1.test4starter</groupId>
<artifactId>test4starter</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.xh.sb.learn.lesson1.mystarter</groupId>
<artifactId>mystarter</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
- Test4starterApplication.java
@SpringBootApplication
@RestController
@RequestMapping("/app")
public class Test4starterApplication {
@Autowired
private Jedis jedis;
public static void main(String[] args) {
SpringApplication.run(Test4starterApplication.class, args);
}
@GetMapping("/name")
public String name() {
String result = jedis.get("name");
return result;
}
@PostMapping("/name/{name}")
public void name(@PathVariable("name") String name) {
jedis.setex("name", 1000, name);
}
}
- application.properties
redis.starter.host=127.0.0.1
redis.starter.port=6379
启动redis
./redis-server
插入和读取数据