spring 的弱智提问

Question

刚开始学  看一些例子 老是在写 ApplicationContext ctx = new ClassPathXmlApplicationContext(
"applicationContext.xml");
UserBean bean = (UserBean) ctx.getBean("userBean");那么是不是我用到 userBean 这类配置的bean的时候，我每次都要在类里写上这两句话呀！

Answer 1

做个静态类获得ApplicationContext 。

Answer 2

是的,如果你想享受SRPING所带来的特性,就必须用这种方法

Answer 3

package com.manpower.locator;import org.springframework.context.support.ClassPathXmlApplicationContext;/**
 * @author Kevin Jin
 *
 */
public class Locator {
    
    private final static ClassPathXmlApplicationContext ctx;
    private final static ClassPathXmlApplicationContext ctx_tw;
    static {
        ctx = new ClassPathXmlApplicationContext(new String[]{"applicationContext_hibernate.xml"});
        ctx_tw = new ClassPathXmlApplicationContext(new String[]{"applicationContext_hibernate_tw.xml"});
    }
    
   public static Object getObject(String name) {
        return ctx.getBean(name);
    }
    @SuppressWarnings("unchecked")
    public static <T> T lookupService(Class<T> clz) {
return (T) ctx.getBean(clz.getSimpleName());
}    public static Object getObject_tw(String name) {
        return ctx.getBean(name);
    }
    @SuppressWarnings("unchecked")
    public static <T> T lookupService_tw(Class<T> clz) {
return (T) ctx.getBean(clz.getSimpleName());
}
    private Locator() {}}