Springboot使用PlatformTransactionManager接口的事务处理

 1 package com.demo.service.impl;
 2 
 3 import java.util.List;
 4 
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Service;
 7 import org.springframework.transaction.annotation.Propagation;
 8 import org.springframework.transaction.annotation.Transactional;
 9 
10 import com.demo.dao.UserDao;
11 import com.demo.po.UserInfo;
12 import com.demo.service.UserService;
13 
14 @Service
15 public class UserServiceImpl implements UserService {
16 
17     @Autowired
18     private UserDao userDao;
19 
20     /**
21      * 在业务层的方法上启用事务管理
22      */
23     @Transactional(propagation = Propagation.REQUIRED, readOnly = true)
24     @Override
25     public List<UserInfo> findAll() {
26         
27         return userDao.findAll();
28     }
29 
30 }

 1 package com.demo;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 6 import org.springframework.transaction.annotation.EnableTransactionManagement;
 7 
 8 @SpringBootApplication // 启动Springboot程序，而后自带子包扫描
 9 @EnableJpaRepositories(basePackages = "com.demo.dao")
10 @EnableTransactionManagement // 启动事务管理
11 public class DemoApplication {
12 
13     public static void main(String[] args) {
14         // 启动Springboot程序
15         SpringApplication.run(DemoApplication.class, args);
16     }
17 
18 }

 1 package com.demo.config;
 2 
 3 import java.util.HashMap;
 4 import java.util.Map;
 5 
 6 import org.aspectj.lang.annotation.Aspect;
 7 import org.springframework.aop.Advisor;
 8 import org.springframework.aop.aspectj.AspectJExpressionPointcut;
 9 import org.springframework.aop.support.DefaultPointcutAdvisor;
10 import org.springframework.beans.factory.annotation.Autowired;
11 import org.springframework.context.annotation.Bean;
12 import org.springframework.context.annotation.Configuration;
13 import org.springframework.transaction.PlatformTransactionManager;
14 import org.springframework.transaction.TransactionDefinition;
15 import org.springframework.transaction.interceptor.NameMatchTransactionAttributeSource;
16 import org.springframework.transaction.interceptor.RuleBasedTransactionAttribute;
17 import org.springframework.transaction.interceptor.TransactionAttribute;
18 import org.springframework.transaction.interceptor.TransactionInterceptor;
19 
20 @Configuration // 定义配置Bean
21 @Aspect // 采用Aop切面处理,定义切面类,切面通常是指封装的用于横向插入系统功能（事务、日志）的类。
22 public class TransactionConfig {
23 
24     private static final int TRANSACTION_METHOD_TIMEOUT = 5; // 事务超时时间为5秒钟
25 
26     // 定义切面表达式
27     private static final String AOP_POINTCUT_EXPRESSION = "execution(* com.demo..service.*.*(..))";
28 
29     // 注入事务管理对象
30     @Autowired
31     private PlatformTransactionManager transactionManager;
32 
33     /**
34      * 切面名称必须为txAdvice
35      * 
36      * @return
37      */
38     @Bean(value = "txAdvice")
39     public TransactionInterceptor transactionConfig() {
40         // 定义只读事务控制，该事务不需要启动事务支持
41         RuleBasedTransactionAttribute readOnly = new RuleBasedTransactionAttribute();
42         // 设置只读事务
43         readOnly.setReadOnly(true);
44         readOnly.setPropagationBehavior(TransactionDefinition.PROPAGATION_NOT_SUPPORTED);
45 
46         // 定义更新事务，同时设置事务操作的超时时间
47         RuleBasedTransactionAttribute required = new RuleBasedTransactionAttribute();
48         required.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
49         // 设置事务超时时间为5秒钟
50         required.setTimeout(TRANSACTION_METHOD_TIMEOUT);
51 
52         // 定义业务切面
53         Map<String, TransactionAttribute> transactionmap = new HashMap<String, TransactionAttribute>();
54         transactionmap.put("add*", required);
55         transactionmap.put("edit*", required);
56         transactionmap.put("delete*", required);
57         transactionmap.put("get*", readOnly);
58         transactionmap.put("list*", readOnly);
59         transactionmap.put("find*", readOnly);
60 
61         // 使用名称匹配
62         NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();
63         source.setNameMap(transactionmap);
64 
65         // 对设置名称的方法进行事务操作
66         TransactionInterceptor transactionInterceptor = new TransactionInterceptor();
67         transactionInterceptor.setTransactionManager(transactionManager);
68         transactionInterceptor.setTransactionAttributeSource(source);
69 
70         // 返回事务信息
71         return transactionInterceptor;
72     }
73 
74     @Bean
75     public Advisor transactionAdviceAdvisor() {
76         AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
77         // 定义切面
78         pointcut.setExpression(AOP_POINTCUT_EXPRESSION);
79         DefaultPointcutAdvisor advisor = new DefaultPointcutAdvisor(pointcut, transactionConfig());
80         return advisor;
81     }
82 
83 }