ApplicationContext用法示例
1、通过ApplicationContext将bean注入容器中
import org.springframework.context.ApplicationContext; import org.springframework.context.annotation.AnnotationConfigApplicationContext; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Scope; @Configuration public class ApplicationContextTest { @Bean(name="user") @Scope("singleton") public User ttt() { User user = new User(); user.setName("user_1"); user.setPwd("1234"); return user; } public static void main(String[] args) { //通过applicationContext方式 ApplicationContext atc = new AnnotationConfigApplicationContext(ApplicationContextTest.class); User user = (User)atc.getBean("user"); System.out.println(user.getPwd()); //通过注册的方式 AnnotationConfigApplicationContext acc = new AnnotationConfigApplicationContext(); acc.register(ApplicationContextTest.class); acc.refresh(); User _user = (User)acc.getBean("user"); System.out.println(_user.getName()); } } class User { private String name; private String pwd; public User() { } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } public User(String name, String pwd) { this.name = name; this.pwd = pwd; } }