在Spring boot 中获取spring上下文的工具类
/**
* 从Spring上下文取出Bean工具类
*
* @author ZhuPengWei
* @date 2018/6/27 18:04
*/
public class SpringApplicationContextUtil {
private static ApplicationContext applicationContext = null;
public static void setApplicationContext(ApplicationContext applicationContext) {
if (SpringApplicationContextUtil.applicationContext == null) {
SpringApplicationContextUtil.applicationContext = applicationContext;
}
}
//获取applicationContext
public static ApplicationContext getApplicationContext() {
return applicationContext;
}
//通过name获取 Bean.
public static Object getBean(String name) {
return getApplicationContext().getBean(name);
}
//通过class获取Bean.
public static <T> T getBean(Class<T> clazz) {
return getApplicationContext().getBean(clazz);
}
//通过name,以及Clazz返回指定的Bean
public static <T> T getBean(String name, Class<T> clazz) {
return getApplicationContext().getBean(name, clazz);
}
}
启动类上需要设置
public static void main(String[] args) {
ApplicationContext run = SpringApplication.run(MusicCpApplication.class, args);
SpringApplicationContextUtil.setApplicationContext(run);
}