Spring Boot扩展机制 - Spring Factori
2020-09-16 本文已影响0人
十毛tenmao
Spring Boot使用的时候，有时候为业务方提供一些基础服务，比如监控，告警等，为了降低业务接入难度，就需要使用Spring Factories扩展机制
使用方式
- 启动类：
com.tenmao.FactoriesApplication
@SpringBootApplication
public class FactoriesApplication implements ApplicationRunner {
@Resource
private UserManager userManager;
public static void main(String[] args) {
SpringApplication.run(FactoriesApplication.class, args);
}
@Override
public void run(ApplicationArguments args) throws Exception {
System.out.println(userManager.getName());
}
}
- 配置类：
com.shimao.ShimaoAuthConfiguration
@Configuration
public class ShimaoAuthConfiguration {
@Bean
public UserManager userManager() {
return new UserManager();
}
}
- 扩展配置：
META-INF/spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
com.shimao.ShimaoAuthConfiguration
shardingsphere扩展
org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration
@Configuration
@EnableConfigurationProperties({
SpringBootShardingRuleConfigurationProperties.class,
SpringBootMasterSlaveRuleConfigurationProperties.class, SpringBootEncryptRuleConfigurationProperties.class, SpringBootPropertiesConfigurationProperties.class})
@ConditionalOnProperty(prefix = "spring.shardingsphere", name = "enabled", havingValue = "true", matchIfMissing = true)
@AutoConfigureBefore(DataSourceAutoConfiguration.class)
@RequiredArgsConstructor
public class SpringBootConfiguration implements EnvironmentAware {
//忽略了其他
}
spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
org.apache.shardingsphere.shardingjdbc.spring.boot.SpringBootConfiguration
其他常见第三方库
这些库都用到Spring Factories扩展机制
- sharding-jdbc-spring-boot-starte
- mybatis-plus-boot-starter
- redisson
其他扩展点
- Sprig Boot扩展
# Auto Configure（这个扩展是使用的最多的，特别是是一些公共SDK，会这借助这扩展实现Bean的自动注入）
org.springframework.boot.autoconfigure.EnableAutoConfiguration
# PropertySource Loaders
org.springframework.boot.env.PropertySourceLoader
# Run Listeners
org.springframework.boot.SpringApplicationRunListener
# Error Reporters
org.springframework.boot.SpringBootExceptionReporter
# Application Context Initializers
org.springframework.context.ApplicationContextInitializer
# Application Listeners
org.springframework.context.ApplicationListener
# Environment Post Processors
org.springframework.boot.env.EnvironmentPostProcessor
# Failure Analyzers
org.springframework.boot.diagnostics.FailureAnalyzer
# FailureAnalysisReporters
org.springframework.boot.diagnostics.FailureAnalysisReporter
