<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
         <groupId>c3p0</groupId>
         <artifactId>c3p0</artifactId>
         <version>0.9.1.2</version>
     </dependency>
     <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.8.7</version>
      </dependency>
</dependencies>

<!-- 配置數(shù)據(jù)源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <!--連接數(shù)據(jù)庫(kù)的必備信息-->
    <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
    <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test"></property>
    <property name="user" value="root"></property>
    <property name="password" value="root"></property>
</bean>
<!--開啟spring對(duì)注解AOP的支持-->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>

package com.gzl.utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.sql.DataSource;
import java.sql.Connection;
/**
 * 連接的工具類，它用于從數(shù)據(jù)源中獲取一個(gè)連接，并且實(shí)現(xiàn)和線程的綁定
 */
@Component("connectionUtils")
public class ConnectionUtils {
    private ThreadLocal<Connection> tl = new ThreadLocal<Connection>();
    @Autowired
    private DataSource dataSource;
    /**
     * 獲取當(dāng)前線程上的連接
     * @return
     */
    public Connection getThreadConnection() {
        try{
            //1.先從ThreadLocal上獲取
            Connection conn = tl.get();
            //2.判斷當(dāng)前線程上是否有連接
            if (conn == null) {
                //3.從數(shù)據(jù)源中獲取一個(gè)連接，并且存入ThreadLocal中
                conn = dataSource.getConnection();
                tl.set(conn);
            }
            //4.返回當(dāng)前線程上的連接
            return conn;
        }catch (Exception e){
            throw new RuntimeException(e);
        }
    }
    /**
     * 把連接和線程解綁
     */
    public void removeConnection(){
        tl.remove();
    }
}

package com.gzl.utils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
/**
 * 和事務(wù)管理相關(guān)的工具類，它包含了，開啟事務(wù)，提交事務(wù)，回滾事務(wù)和釋放連接
 */
@Component("txManager")
@Aspect
public class TransactionManager {
    @Autowired
    private ConnectionUtils connectionUtils;
  /**
     * 需要進(jìn)行事務(wù)控制的類或者方法，EL表達(dá)式配置
     */
    @Pointcut("execution(* com.gzl.service.impl.*.*(..))")
    private void pt1(){}
    /**
     * 開啟事務(wù)
     */
    public  void beginTransaction(){
        try {
            connectionUtils.getThreadConnection().setAutoCommit(false);
        }catch (Exception e){
            e.printStackTrace();
        }
    }
    /**
     * 提交事務(wù)
     */
    public  void commit(){
        try {
            connectionUtils.getThreadConnection().commit();
        }catch (Exception e){
            e.printStackTrace();
        }
    }
    /**
     * 回滾事務(wù)
     */
    public  void rollback(){
        try {
            connectionUtils.getThreadConnection().rollback();
        }catch (Exception e){
            e.printStackTrace();
        }
    }
    /**
     * 釋放連接
     */
    public  void release(){
        try {
            connectionUtils.getThreadConnection().close();//還回連接池中
            connectionUtils.removeConnection();
        }catch (Exception e){
            e.printStackTrace();
        }
    }
    @Around("pt1()")
    public Object aroundAdvice(ProceedingJoinPoint pjp){
        Object rtValue = null;
        try {
            //1.獲取參數(shù)
            Object[] args = pjp.getArgs();
            //2.開啟事務(wù)
            this.beginTransaction();
            //3.執(zhí)行方法
            rtValue = pjp.proceed(args);
            //4.提交事務(wù)
            this.commit();
            //返回結(jié)果
            return  rtValue;
        }catch (Throwable e){
            //5.回滾事務(wù)
            this.rollback();
            throw new RuntimeException(e);
        }finally {
            //6.釋放資源
            this.release();
        }
    }
}

package com.spring.service;
public interface IComponent { 
public void bussiness1();
public void bussiness2();
public void bussiness3();
}

package com.spring.service;
public class Component implements IComponent{
 @Override
 public void bussiness1() {
  // TODO Auto-generated method stub
  System.out.println("這是業(yè)務(wù)1");
 }
 @Override
 public void bussiness2() {
  // TODO Auto-generated method stub
  System.out.println("這是業(yè)務(wù)2");
 }
 @Override
 public void bussiness3() {
  // TODO Auto-generated method stub
  System.out.println("這是業(yè)務(wù)3");
 }
}