spring boot 通过@Value，@ConfigurationProperties获取配置

spring boot 获取配置项值

# 线程池配置
taskexecutor:
corePoolSize: 5
maxPoolSize: 10
queueCapacity: 25

通过@Value 获取值

@Configuration
@EnableAsync
public class ExecutorConfig {

@Value("${taskexecutor.corePoolSize}")
private int corePoolSize;

@Value("${taskexecutor.maxPoolSize}")
private int maxPoolSize;

@Value("${taskexecutor.queueCapacity}")
private int queueCapacity;

@Bean
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(corePoolSize);
executor.setMaxPoolSize(maxPoolSize);
executor.setQueueCapacity(queueCapacity);
executor.setThreadNamePrefix("TaskExecutor-");
executor.initialize();
return executor;
}
}

通过@ConfigurationProperties 获取值

@Configuration
@EnableAsync
@ConfigurationProperties(ignoreUnknownFields = false，prefix = "taskexecutor")
public class ExecutorConfig {

private int corePoolSize;

private int maxPoolSize;

private int queueCapacity;

@Bean
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(corePoolSize);
executor.setMaxPoolSize(maxPoolSize);
executor.setQueueCapacity(queueCapacity);
executor.setThreadNamePrefix("TaskExecutor-");
executor.initialize();
return executor;
}
}