spring boot静态变量注入配置文件详解

本文实例为大家分享了spring boot静态变量注入配置文件的具体代码,供大家参考,具体内容如下

spring 静态变量注入

spring 中不支持直接进行静态变量值的注入,我们看一下代码:

@Component(value = "KafkaConfig")

@ConfigurationProperties(prefix = "baseConfig")

public class KafkaConfig {

private static String logBrokerList;

public static String getLogBrokerList() {

return logBrokerList;

}

public static void setLogBrokerList(String logBrokerList) {

KafkaConfig.logBrokerList = logBrokerList;

}

}

配置文件如下:

baseConfig:

logBrokerList: 10.10.2.154:9092

logTopic: test

monitorTopic: monitor

项目启动时使用 logBrokerList变量

@SpringBootApplication

public class Application {

public static void main(String[] args) throws Exception {

SpringApplication.run(Application.class, args);

System.out.println("config static test :" + KafkaConfig.getLogBrokerList());

}

}

执行结果:

config static test :null

解决办法

利用spring的set注入方法,通过非静态的setter方法注入静态变量 ,我们可以改成这样就静态变量可以获取到你配置的信息了:

@Component(value = "KafkaConfig")

@ConfigurationProperties(prefix = "baseConfig")

public class KafkaConfig {

private static String logBrokerList;

public static String getLogBrokerList() {

return logBrokerList;

}

@Value("${baseConfig.logBrokerList}")

public void setLogBrokerList(String logBrokerList) {

KafkaConfig.logBrokerList = logBrokerList;

}

}

执行结果:

config static test :10.10.2.154:9092

以上是 spring boot静态变量注入配置文件详解 的全部内容, 来源链接: utcz.com/z/344618.html

回到顶部