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在非Spring Boot的Spring项目中使用Lock4j

news 2025/7/20 6:44:28

在非Spring Boot的Spring项目中使用Lock4j

Lock4j虽然主要面向Spring Boot项目，但也可以在传统的Spring项目中使用。以下是配置和使用步骤：

1. 添加依赖

<dependency><groupId>com.baomidou</groupId><artifactId>lock4j-core</artifactId><version>最新版本</version>
</dependency><!-- 根据你选择的锁实现添加对应依赖 -->
<!-- 使用Redisson实现 -->
<dependency><groupId>org.redisson</groupId><artifactId>redisson</artifactId><version>3.16.1</version>
</dependency>

2. Spring XML配置方式

基础配置

<!-- 配置Redisson客户端 -->
<bean id="redissonClient" class="org.redisson.api.Redisson" factory-method="create"><constructor-arg><bean class="org.redisson.config.Config"><property name="singleServerConfig"><bean class="org.redisson.config.SingleServerConfig"><property name="address" value="redis://127.0.0.1:6379"/></bean></property></bean></constructor-arg>
</bean><!-- 配置Lock4j -->
<bean id="lockTemplate" class="com.baomidou.lock.spring.LockTemplate"><property name="lockExecutor" ref="redissonLockExecutor"/>
</bean><bean id="redissonLockExecutor" class="com.baomidou.lock.redisson.RedissonLockExecutor"><property name="redissonClient" ref="redissonClient"/>
</bean><!-- 启用Lock4j注解支持 -->
<bean class="com.baomidou.lock.spring.Lock4jAspect"/>

属性配置

在properties文件中添加：

lock4j.acquire-timeout=3000
lock4j.expire=30000

然后在XML中配置属性处理器：

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"><property name="locations"><list><value>classpath:config.properties</value></list></property>
</bean><bean class="com.baomidou.lock.spring.Lock4jProperties"><property name="acquireTimeout" value="${lock4j.acquire-timeout}"/><property name="expire" value="${lock4j.expire}"/>
</bean>

3. 纯Java配置方式

如果你使用Java配置类：

@Configuration
@EnableAspectJAutoProxy
public class Lock4jConfig {@Beanpublic RedissonClient redissonClient() {Config config = new Config();config.useSingleServer().setAddress("redis://127.0.0.1:6379");return Redisson.create(config);}@Beanpublic Lock4jProperties lock4jProperties() {Lock4jProperties properties = new Lock4jProperties();properties.setAcquireTimeout(3000);properties.setExpire(30000);return properties;}@Beanpublic LockTemplate lockTemplate(RedissonClient redissonClient) {LockTemplate lockTemplate = new LockTemplate();lockTemplate.setLockExecutor(redissonLockExecutor(redissonClient));return lockTemplate;}@Beanpublic RedissonLockExecutor redissonLockExecutor(RedissonClient redissonClient) {RedissonLockExecutor executor = new RedissonLockExecutor();executor.setRedissonClient(redissonClient);return executor;}@Beanpublic Lock4jAspect lock4jAspect() {return new Lock4jAspect();}
}

4. 使用方式

注解方式使用

@Service
public class OrderService {@Lock4j(keys = {"#orderId"})public void processOrder(String orderId) {// 业务逻辑}
}

编程式使用

@Service
public class OrderService {@Autowiredprivate LockTemplate lockTemplate;public void processOrder(String orderId) {try {if (lockTemplate.lock("order:" + orderId, 3000, 30000)) {// 获取锁成功，执行业务逻辑} else {// 获取锁失败处理}} finally {lockTemplate.releaseLock("order:" + orderId);}}
}

5. 注意事项

确保Spring的AOP配置正确，以便@Lock4j注解能够正常工作
如果使用XML配置，确保<aop:aspectj-autoproxy/>已配置
锁的key设计要合理，避免不同业务间的冲突
在非Spring Boot环境中，所有配置都需要手动完成
确保Redisson或其他锁实现的连接配置正确

6. 自定义扩展

如果需要自定义锁失败处理，可以实现LockFailureStrategy接口：

public class CustomLockFailureStrategy implements LockFailureStrategy {@Overridepublic void onLockFailure(String key, long acquireTimeout, int acquireCount) {// 自定义锁失败处理逻辑throw new RuntimeException("获取锁失败，key: " + key);}
}

然后在配置中注册：

<bean id="customLockFailureStrategy" class="com.your.package.CustomLockFailureStrategy"/><bean class="com.baomidou.lock.spring.Lock4jAspect"><property name="lockFailureStrategy" ref="customLockFailureStrategy"/>
</bean>