SpringContextUtils.setapplicationcontext不执行问题解决

曾经终败给现在 2023-09-23 13:45 41阅读 0赞

配置类如下

@Component
    public class SpringContextUtils implements ApplicationContextAware {
        
    
        private static ApplicationContext applicationContext;
    
    
        @Override
        public void setApplicationContext(ApplicationContext applicationContext)
                  {
        
            SpringContextUtils.applicationContext = applicationContext;
        }
    
        public static Object getBean(String name) {
        
            return applicationContext.getBean(name);
        }
    
        public static <T> T getBean(Class<T> requiredType) {
        
            return applicationContext.getBean(requiredType);
        }
        /**
         * 防止懒加载 applicationContext逻辑写这里了
         * @param applicationContext
         * @param name
         * @param requiredType
         * @param <T>
         * @return
         */
        public static <T> T getInitBean(ApplicationContext applicationContext,String name, Class<T> requiredType) {
        
            if (applicationContext!=null){
        
                SpringContextUtils.applicationContext = applicationContext;
            }
            return applicationContext.getBean(name, requiredType);
        }
    
        public static boolean containsBean(String name) {
        
            return applicationContext.containsBean(name);
        }
    
        public static boolean isSingleton(String name) {
        
            return applicationContext.isSingleton(name);
        }
    
        public static Class<? extends Object> getType(String name) {
        
            return applicationContext.getType(name);
        }
    }

**因为懒加载导致 setapplicationcontext 不执行 网上方法不怎么好用我直接写得逻辑**

使用getbean的地方注入

@Autowired
        private   ApplicationContext applicationContext;

工具类逻辑判断

public static <T> T getBean(ApplicationContext applicationContext,String name, Class<T> requiredType) {
        
            if (applicationContext==null){
        
                SpringContextUtils.applicationContext = applicationContext;
            }
            return applicationContext.getBean(name, requiredType);
        }