springboot 实现bean手动注入操作

package test.projectTest;
import org.mybatis.spring.boot.autoconfigure.MybatisAutoConfiguration;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.boot.system.ApplicationPidFileWriter;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import test.projectTest.util.SpringContextUtil;
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class,DataSourceTransactionManagerAutoConfiguration.class, MybatisAutoConfiguration.class})
@SpringBootApplication(scanBasePackages={"test.projectTest"})
public class TestApplication implements ApplicationListener<ContextRefreshedEvent>
{
 public static void main( String[] args )
 {
  SpringApplication application = new SpringApplication(TestApplication.class);
  application.addListeners(new ApplicationPidFileWriter());
  application.run(args);
  System.out.println( "启动成功" );
 }
 @Override
 public void onApplicationEvent(ContextRefreshedEvent event) {
  SpringContextUtil.setApplicationContext(event.getApplicationContext());  
 }
}

package test.projectTest.util;
import org.springframework.context.ApplicationContext;
/**
 * 获取spring容器，以访问容器中定义的其他bean
 */
public class SpringContextUtil{
 //spring上下文
 private static ApplicationContext applicationContext;
 
 /**
  * 实现ApplicationContextAware接口的回调方法，设置上下文环境
  * @param applicationContext
  */
 public static void setApplicationContext(ApplicationContext applicationContext){
  if(null==SpringContextUtil.applicationContext)
   SpringContextUtil.applicationContext=applicationContext;
 }
 
 public static ApplicationContext getApplicationContext(){
  return applicationContext;
 }
  /**
  * 通过name获取 Bean.
  *
  * @param name
  * @return
  */
 public static Object getBean(String name) {
  return getApplicationContext().getBean(name);
 }
 /**
  * 通过name获取 Bean.
  *
  * @param clazz
  * @return
  */
 public static <T> T getBean(Class<T> clazz) {
  return getApplicationContext().getBean(clazz);
 }
 /**
  * 通过name,以及Clazz返回指定的Bean
  *
  * @param name
  * @param clazz
  * @return
  */
 public static <T> T getBean(String name, Class<T> clazz) {
  return getApplicationContext().getBean(name, clazz);
 }
}

package test.projectTest.util;
import test.projectTest.mapper.slave.DailyDataMapper;
public class TestUtil{ 
 private static DailyDataMapper dailyDataMapper; 
 static{//手动注入bean
  if(dailyDataMapper==null){
   dailyDataMapper = (DailyDataMapper)SpringContextUtil.getBean("dailyDataMapper");
  }
 }
 public static void test(){
  dailyDataMapper.selectByPrimaryKey(1);
 } 
}