Java 更新数据库时出错：超过锁定等待超时

我使用了MyBatis，我想更新数据库中的数据，插入查询可以工作，但我在更新中遇到了这个错误

Error updating database.  Cause: java.sql.SQLException: Lock wait timeout exceeded; try restarting transaction

SqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost/test"/>
                <property name="username" value="root"/>
                <property name="password" value="***"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
      <mapper resource="config/UserMapper.xml"/>
    </mappers>
</configuration>

---

谢谢。

您应该考虑通过设置InnoDB_lock_wait_超时来增加InnoDB的锁等待超时值，默认值为50秒

mysql> show variables like 'innodb_lock_wait_timeout';

您可以将其设置为更高的值并重新启动mysql：

SET GLOBAL innodb_lock_wait_timeout = 120; 

mysql> show variables like 'innodb_lock_wait_timeout';

SET GLOBAL innodb_lock_wait_timeout = 120;