更新spring事务

0xcaffebabe · Jan 11, 2020 · 68b771d · 68b771d
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diff --git a/后端开发/框架/Spring/AOP.md b/后端开发/框架/Spring/AOP.md
@@ -119,169 +119,5 @@ public class ErrorPageAspect {
 </beans>
 ```
 
-# 事务
 
-## 属性
-
-- read-only：是否是只读事务。默认false，不只读。
-- isolation：指定事务的隔离级别。默认值是使用数据库的默认隔离级别。
-- propagation：指定事务的传播行为。
-- timeout：指定超时时间。默认值为：-1。永不超时。
-- rollback-for：用于指定一个异常，当执行产生该异常时，事务回滚。产生其他异常，事务不回滚。没有默认值，任何异常都回滚。
-- no-rollback-for：用于指定一个异常，当产生该异常时，事务不回滚，产生其他异常时，事务回滚。没有默认值，任何异常都回滚。
-
-## 使用xml进行配置
-
-- 声明式事务
-
-```xml
-<?xml version="1.0" encoding="UTF-8"?>
-<beans xmlns="http://www.springframework.org/schema/beans"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
-       xsi:schemaLocation="http://www.springframework.org/schema/beans
-        https://www.springframework.org/schema/beans/spring-beans.xsd
-        http://www.springframework.org/schema/aop
-        https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
-
-    <bean class="wang.ismy.spring.Dao">
-        <constructor-arg ref="template"/>
-    </bean>
-
-    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
-        <property name="username" value="root"/>
-        <property name="password" value="123"/>
-        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
-        <property name="url" value="jdbc:mysql:///mybatis"/>
-    </bean>
-
-    <bean id="template" class="org.springframework.jdbc.core.JdbcTemplate">
-        <constructor-arg name="dataSource" ref="dataSource"/>
-    </bean>
-
-    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
-        <property name="dataSource" ref="dataSource"/>
-    </bean>
-
-    <!--配置事务的通知-->
-    <tx:advice id="txAdvice" transaction-manager="transactionManager">
-        <tx:attributes>
-            <tx:method name="transfer" propagation="REQUIRED" read-only="false"/>
-        </tx:attributes>
-    </tx:advice>
-
-    <!--配置aop-->
-    <aop:config>
-        <aop:pointcut id="txPt" expression="execution(* wang.ismy.spring.Dao.*(..))"/>
-        <!--建立切入点表达式与事务通知的关系-->
-        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPt"/>
-    </aop:config>
-</beans>
-```
-
-```java
-public class Dao {
-
-    private JdbcTemplate jdbcTemplate;
-
-    public Dao(JdbcTemplate jdbcTemplate) {
-        this.jdbcTemplate = jdbcTemplate;
-    }
-
-    public void transfer(){
-        String sql = "UPDATE account SET money = money -200 WHERE uid = 41";
-        String sql1 = "UPDATE account SET money = money +200 WHERE uid = 45";
-        jdbcTemplate.update(sql);
-        jdbcTemplate.update(sql1);
-    }
-}
-```
-
-## 注解配置
-
-```java
-@Configuration
-@EnableTransactionManagement
-public class Config {
-
-    @Bean
-    public DataSource dataSource(){
-        DriverManagerDataSource dataSource = new DriverManagerDataSource();
-        dataSource.setUsername("root");
-        dataSource.setPassword("123");
-        dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
-        dataSource.setUrl("jdbc:mysql:///mybatis");
-        return dataSource;
-    }
-
-    @Bean
-    public JdbcTemplate jdbcTemplate(DataSource dataSource){
-        return new JdbcTemplate(dataSource);
-    }
-
-    @Bean
-    public PlatformTransactionManager transactionManager(DataSource dataSource){
-        return new DataSourceTransactionManager(dataSource);
-    }
-}
-```
-
-```java
-@Service
-public class Dao {
-
-    private JdbcTemplate jdbcTemplate;
-
-    public Dao(JdbcTemplate jdbcTemplate) {
-        this.jdbcTemplate = jdbcTemplate;
-    }
-
-    @Transactional(rollbackFor = Exception.class)
-    public void transfer(){
-        String sql = "UPDATE account SET money = money -200 WHERE uid = 41";
-        String sql1 = "UPDATE account SET money = money +200 WHERE uid = 45";
-
-        jdbcTemplate.update(sql);
-        jdbcTemplate.update(sql1);
-    }
-}
-```
-
-- 编程式事务
-
-```java
-    @Bean
-    public TransactionTemplate transactionTemplate(PlatformTransactionManager manager){
-        return new TransactionTemplate(manager);
-    }
-```
-
-```java
-@Service
-public class Dao {
-
-    private JdbcTemplate jdbcTemplate;
-
-    private TransactionTemplate transactionTemplate;
-
-    public Dao(JdbcTemplate jdbcTemplate) {
-        this.jdbcTemplate = jdbcTemplate;
-    }
-
-    public void transfer(){
-        transactionTemplate.execute((TransactionCallback<Void>) status -> {
-            String sql = "UPDATE account SET money = money -200 WHERE uid = 41";
-            String sql1 = "UPDATE account SET money = money +200 WHERE uid = 45";
-            jdbcTemplate.update(sql);
-            jdbcTemplate.update(sql1);
-            return null;
-        });
-    }
-
-    @Autowired
-    public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
-        this.transactionTemplate = transactionTemplate;
-    }
-}
-```
 
diff --git a/后端开发/框架/Spring/nav.md b/后端开发/框架/Spring/nav.md
@@ -4,6 +4,7 @@
   - [装配Bean](./装配Bean.md)
   - [高级装配](./高级装配.md)
   - [AOP](./AOP.md)
+  - [事务](./事务.md)
 
 - ## SpringMVC
 

diff --git a/后端开发/框架/Spring/事务.md b/后端开发/框架/Spring/事务.md
@@ -0,0 +1,184 @@
+# 事务
+
+## 属性
+
+- read-only：是否是只读事务。默认false，不只读。
+- isolation：指定事务的隔离级别。默认值是使用数据库的默认隔离级别。
+- propagation：指定事务的传播行为。
+- timeout：指定超时时间。默认值为：-1。永不超时。
+- rollback-for：用于指定一个异常，当执行产生该异常时，事务回滚。产生其他异常，事务不回滚。没有默认值，任何异常都回滚。
+- no-rollback-for：用于指定一个异常，当产生该异常时，事务不回滚，产生其他异常时，事务回滚。没有默认值，任何异常都回滚。
+
+### 传播行为
+
+- PROPAGATION_REQUIRED
+
+![](https://docs.spring.io/spring/docs/5.2.1.RELEASE/spring-framework-reference/images/tx_prop_required.png)
+
+简单来说就是两个被事务管理的方法都将在同一个事务内执行
+
+- PROPAGATION_REQUIRES_NEW
+
+![](https://docs.spring.io/spring/docs/5.2.1.RELEASE/spring-framework-reference/images/tx_prop_requires_new.png)
+
+而这个传播行为则是开启一个新事务
+
+- PROPAGATION_NESTED
+
+该传播行为则是与JDBC的保存点一样，它使用了物理事务的保存点的概念
+
+## 使用xml进行配置
+
+- 声明式事务
+  - 声明式事务都是基于编程事务
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans
+        https://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/aop
+        https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
+
+    <bean class="wang.ismy.spring.Dao">
+        <constructor-arg ref="template"/>
+    </bean>
+
+    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
+        <property name="username" value="root"/>
+        <property name="password" value="123"/>
+        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
+        <property name="url" value="jdbc:mysql:///mybatis"/>
+    </bean>
+
+    <bean id="template" class="org.springframework.jdbc.core.JdbcTemplate">
+        <constructor-arg name="dataSource" ref="dataSource"/>
+    </bean>
+
+    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
+        <property name="dataSource" ref="dataSource"/>
+    </bean>
+
+    <!--配置事务的通知-->
+    <tx:advice id="txAdvice" transaction-manager="transactionManager">
+        <tx:attributes>
+            <tx:method name="transfer" propagation="REQUIRED" read-only="false"/>
+        </tx:attributes>
+    </tx:advice>
+
+    <!--配置aop-->
+    <aop:config>
+        <aop:pointcut id="txPt" expression="execution(* wang.ismy.spring.Dao.*(..))"/>
+        <!--建立切入点表达式与事务通知的关系-->
+        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPt"/>
+    </aop:config>
+</beans>
+```
+
+```java
+public class Dao {
+
+    private JdbcTemplate jdbcTemplate;
+
+    public Dao(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    public void transfer(){
+        String sql = "UPDATE account SET money = money -200 WHERE uid = 41";
+        String sql1 = "UPDATE account SET money = money +200 WHERE uid = 45";
+        jdbcTemplate.update(sql);
+        jdbcTemplate.update(sql1);
+    }
+}
+```
+
+## 注解配置
+
+```java
+@Configuration
+@EnableTransactionManagement
+public class Config {
+
+    @Bean
+    public DataSource dataSource(){
+        DriverManagerDataSource dataSource = new DriverManagerDataSource();
+        dataSource.setUsername("root");
+        dataSource.setPassword("123");
+        dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
+        dataSource.setUrl("jdbc:mysql:///mybatis");
+        return dataSource;
+    }
+
+    @Bean
+    public JdbcTemplate jdbcTemplate(DataSource dataSource){
+        return new JdbcTemplate(dataSource);
+    }
+
+    @Bean
+    public PlatformTransactionManager transactionManager(DataSource dataSource){
+        return new DataSourceTransactionManager(dataSource);
+    }
+}
+```
+
+```java
+@Service
+public class Dao {
+
+    private JdbcTemplate jdbcTemplate;
+
+    public Dao(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    @Transactional(rollbackFor = Exception.class)
+    public void transfer(){
+        String sql = "UPDATE account SET money = money -200 WHERE uid = 41";
+        String sql1 = "UPDATE account SET money = money +200 WHERE uid = 45";
+
+        jdbcTemplate.update(sql);
+        jdbcTemplate.update(sql1);
+    }
+}
+```
+
+- 编程式事务
+
+```java
+@Bean
+public TransactionTemplate transactionTemplate(PlatformTransactionManager manager){
+    return new TransactionTemplate(manager);
+}
+```
+
+```java
+@Service
+public class Dao {
+
+    private JdbcTemplate jdbcTemplate;
+
+    private TransactionTemplate transactionTemplate;
+
+    public Dao(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+    }
+
+    public void transfer(){
+        transactionTemplate.execute((TransactionCallback<Void>) status -> {
+            String sql = "UPDATE account SET money = money -200 WHERE uid = 41";
+            String sql1 = "UPDATE account SET money = money +200 WHERE uid = 45";
+            jdbcTemplate.update(sql);
+            jdbcTemplate.update(sql1);
+            return null;
+        });
+    }
+
+    @Autowired
+    public void setTransactionTemplate(TransactionTemplate transactionTemplate) {
+        this.transactionTemplate = transactionTemplate;
+    }
+}
+```