不用参数注入获取bean

package com.kang;
import org.springframework.beans.BeansException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

/*

获取不到 httpRequest

获取bean的类

*/

@Component

public class Context implements ApplicationContextAware {

private static ApplicationContext context;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    context = applicationContext;
}

//   使用泛型，获取后不用强制类型转换
public static <T> T getBean(String bean) {
    try {
        return (T) context.getBean(bean);
    }catch (BeansException e){
        return null;
    }
}

//   使用泛型，获取后不用强制类型转换
public static <T> T getBean(Class<T> requiredType) {
    try {
        return context.getBean(requiredType);
    }catch (BeansException e){
        return null;
    }
}

}