ApplicationContextAware应用

文章目录

• ApplicationContextAware应用
• 配置文件
• web.xml
• applicationContext.xml
• java代码
• 请求代码
• 测试

ApplicationContextAware应用

配置文件

web.xml

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    
    <bean id="applicationContextAwareListner"
          class="com.yaoyan.listener.ApplicationContextAwareListner"></bean>
</beans>

java代码

package com.yaoyan.listener;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class ApplicationContextAwareListner implements ApplicationContextAware {

    private static ApplicationContext context;

    public static ApplicationContext getContext() {
        return context;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        ApplicationContextAwareListner.context = applicationContext;

    }
}

package com.yaoyan.service.impl;

import com.yaoyan.service.Service;

public class ServiceImpl implements Service {

    @Override
    public String say() {
        return "say";
    }
}

package com.yaoyan.service;

public interface Service {
    String say();
}

请求代码

@Path("/test")
    @GET
    @Produces("application/json")
    public Response test() {
        ServiceImpl demoService = ApplicationContextAwareListner.getContext().getBean(ServiceImpl.class);
        return Response.status(200).entity(demoService.say() + "   1111").build();
    }

测试