SpringUtil 通过工具类获取 bean

工具类 SpringUtil 实现 bean 获取

底层源码

@Component
public class SpringUtil implements ApplicationContextAware {
 
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContextParam) throws BeansException {
        applicationContext=applicationContextParam;
    }
    public static Object getObject(String id) {
        Object object = null;
        object = applicationContext.getBean(id);
        return object;
    }
    public static <T> T getObject(Class<T> tClass) {
        return applicationContext.getBean(tClass);
    }
 
    public static Object getBean(String tClass) {
        return applicationContext.getBean(tClass);
    }
 
    public static <T> T getBean(String str,Class<T> tClass) {
        return (T)applicationContext.getBean(str);
    }
 
    public <T> T getBean(Class<T> tClass) {
        return applicationContext.getBean(tClass);
    }
}

实际应用

IDynamicSqlService dynamicSqlService = SpringUtil.getBean(IDynamicSqlService.class);

实际应用的SpringUtil.getBean(IDynamicSqlService.class)也是基于刀锋框架的二次封装方法来实现应用的。

解析

由于类名获取更快，字符串hash计算没类直接获取hash快，所以getBean(Class tClass)更好，更建议使用。

刀锋框架二次封装

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