spring学习——注入静态对象属性

spring注入静态对象属性时，因为虚拟机类加载问题，直接在属性上使用@Autowired 是不可以的。需要在属性对应的set方法上@Autowired，并且，set方法不能定义为static。

1.创建静态对象属性对应的类

package com.bluej.springj.service.impl;
 
import org.springframework.stereotype.Service;
 
import com.bluej.springj.service.LogService;
 
@Service("logService")
public class LogServiceImpl implements LogService {
 
    public void doLog() {
        System.out.println("LogServiceImpl.doLog");
 
    }
 
}

LogService类代码

2.创建spring使用的对象

 package com.bluej.springj.service.impl;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 import com.bluej.springj.service.CheckService;
 import com.bluej.springj.service.LogService;
 
 @Service("checkService")
 public class CheckServiceImpl implements CheckService {
 
     private static LogService logService;
 
     public boolean doCheck(Object obj) {
         System.out.println("CheckServiceImpl.doCheck");
         logService.doLog();
         return false;
     }
 
     @Autowired
     public  void setLogService(LogService logService) {
         CheckServiceImpl.logService = logService;
     }
 }

CheckServiceImpl 类

3.调用示例

 package com.bluej.springj.start;
 
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 import com.bluej.springj.service.CheckService;
 
 public class Main {
     public static void main(String[] args) {
         ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
         CheckService checkService = applicationContext.getBean("checkService", CheckService.class);
         checkService.doCheck(new Object());
     }
 }

Main类

4.代码地址

git地址：https://git.oschina.net/blue_phantom/ssmj.git

项目名称：springj

包位置：package com.bluej.springj.start

执行测试类：Main.java