我有带有配置文件的 Spring Boot 应用程序。现在我想在运行时切换配置文件，刷新 spring 上下文并继续应用程序执行。如何在运行时切换 Activity 配置文件(switchEnvironment 方法)？
@SpringBootApplication
public class Application implements CommandLineRunner {
@Autowired
private Config config;
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
@Override
public void run(String ... strings) throws Exception {
System.out.printf("Application is running in %s environment, service parameters below:\n",
getEnvProperty("spring.profiles.active").toUpperCase());
printServiceParameters();
switchEnvironment();
printServiceParameters();
}
private String getEnvProperty(String propertyName) {
return config.getEnv().getProperty(propertyName);
}
private void printServiceParameters() {
System.out.println(getEnvProperty("service.endpoint"));
}
private void switchEnvironment() {
//todo Switch active profile
}
}
配置类
@Configuration
@ConfigurationProperties
public class Config{
@Autowired
private ConfigurableEnvironment env;
public ConfigurableEnvironment getEnv() {
return env;
}
public void setEnv(ConfigurableEnvironment env) {
this.env = env;
}
}
最佳答案
您所需要的就是将此方法添加到您的主类中，并创建 Controller 或服务来调用此方法。
@SpringBootApplication
public class Application {
private static ConfigurableApplicationContext context;
public static void main(String[] args) {
context = SpringApplication.run(Application.class, args);
}
public static void restart() {
Thread thread = new Thread(() -> {
context.close();
context = SpringApplication.run(Application.class, "--spring.profiles.active=your_profile");
});
thread.setDaemon(false);
thread.start();
}
}
Controller :
@RestController
public class RestartController {
@PostMapping("/restart")
public void restart() {
Application.restart();
}
}
关于java - 如何在运行时切换 Spring 配置文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48570314/