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@Configuration@ComponentScan(value="")public class IDGenConfig { @Bean(initMethod = "init") public BeanWayService useBeanWayService(){ return new Bean 阅读全文
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新建maven项目 选择 org.apache.maven.archetypes:maven-archetype-mojo 为骨架创建项目 @Mojo(name = "XXX",defaultPhase = LifecyclePhase.PROCESS_RESOURCES,requiresDepen 阅读全文
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参考Leaf——美团点评分布式ID生成系统 - 美团技术团队 (meituan.com) 代码:GitHub - Meituan-Dianping/Leaf: Distributed ID Generate Service 阅读全文
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静态方法内调用非静态方法,使用<类名.方法名>可调用非静态方法ClassLoader classLoader = ClassLoader.getSystemClassLoader();Class<?> clazz = classLoader.loadClass("class name");path 阅读全文
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SELECT max(case sys_date when '20181019' then amount end) as trade_settle_amount0, max(case sys_date when '20181019' then number end) as trade_settle_ 阅读全文
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@WebFilter(urlPatterns = "/*", filterName = "loginFilter")public class LoginFilter implements Filter { private static final Logger logger = LoggerFact 阅读全文
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创建sequence create sequence hawkeyepredb.tc_report_log_seq minvalue 1 start with 100000 increment by 1 NOCYCLE NOCACHE SHOW SEQUENCES where name = 'mer 阅读全文
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mysql 是自动提交的,Oracle需要手动提交,所以有时会锁表 可以通过 select b.owner,b.object_name,a.session_id,s.serial#from v$locked_object a,dba_objects b,gv$session swhere b.obj 阅读全文