- iOS/Objective-C 元类和类别
- objective-c - -1001 错误,当 NSURLSession 通过 httpproxy 和/etc/hosts
- java - 使用网络类获取 url 地址
- ios - 推送通知中不播放声音
在我的应用程序中,我为一项工作使用了 20 个线程。每个线程调用远程 Web 服务并更新 Oracle 数据库。 Jboss 重启后,作业无法更新数据库,除了我在日志中发现的异常:
2017-11-08 23:36:20,706 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (EJB default - 21) javax.resource.ResourceException: IJ000460: Error checking for a transaction
2017-11-08 23:36:20,706 ERROR [org.jboss.as.ejb3] (EJB default - 16) javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Could not open connection
2017-11-08 23:36:20,707 ERROR [org.jboss.as.ejb3] (EJB default - 20) javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Could not open connection
2017-11-08 23:36:20,707 ERROR [org.jboss.as.ejb3] (EJB default - 19) javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Could not open connection
2017-11-08 23:36:20,710 ERROR [org.jboss.as.ejb3] (EJB default - 21) javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Could not open connection
2017-11-08 23:36:20,711 ERROR [org.jboss.as.ejb3.invocation] (EJB default - 16) JBAS014134: EJB Invocation failed on component PersonServiceDaoImpl for method public abstract long com.kaviletta.re.caltek.db.dao.PersonServiceDao.getNotUpdatedAddressCountBySubmissionId(int): javax.ejb.EJBTransactionRolledbackException: org.hibernate.exception.GenericJDBCException: Could not open connection
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleInCallerTx(CMTTxInterceptor.java:162) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInCallerTx(CMTTxInterceptor.java:252) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:341) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:238) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:55) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:182) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:72) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at com.kaviletta.re.caltek.db.dao.PersonServiceDao$$$view6.getNotUpdatedAddressCountBySubmissionId(Unknown Source) [classes:]
at com.kaviletta.re.caltek.rest.service.impl.AsynchronousServiceImpl.asyncAddressDetails(AsynchronousServiceImpl.java:61) [classes:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_55]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_55]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_55]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_55]
at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:58) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:58) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47) [jboss-as-jpa-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:272) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:339) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:238) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:64) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:55) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:182) [jboss-as-ee-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.2.Final-redhat-1.jar:1.1.2.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.AsyncFutureInterceptorFactory$1$1.runInvocation(AsyncFutureInterceptorFactory.java:89) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at org.jboss.as.ejb3.component.interceptors.AsyncInvocationTask.run(AsyncInvocationTask.java:73) [jboss-as-ejb3-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_55]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_55]
at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_55]
at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Could not open connection
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1387) [hibernate-entitymanager-4.2.7.SP5-redhat-1.jar:4.2.7.SP5-redhat-1]
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1310) [hibernate-entitymanager-4.2.7.SP5-redhat-1.jar:4.2.7.SP5-redhat-1]
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:316) [hibernate-entitymanager-4.2.7.SP5-redhat-1.jar:4.2.7.SP5-redhat-1]
at org.jboss.as.jpa.container.QueryNonTxInvocationDetacher.getSingleResult(QueryNonTxInvocationDetacher.java:69) [jboss-as-jpa-7.3.4.Final-redhat-1.jar:7.3.4.Final-redhat-1]
线程用于数据库操作的代码:
@PersistenceContext
EntityManager entityManager;
protected EntityManager getEntityManager() {
return entityManager;
}
protected void setEntityManager(EntityManager manager) {
this.entityManager = manager;
}
public long getNotUpdatedAddressCountBySubmissionId(int submissionId) {
Query q = getEntityManager().createQuery(
"select count(address.addressId.submissionId) from AddressStruc address where processState!=1 and address.addressId.submissionId = :submissionId");
q.setParameter("submissionId", submissionId);
return (long) q.getSingleResult();
}
public void updateStudentdAddress(List<AddressStruc> studnetsAddressDetails) {
try {
for (AddressStruc studentdAddress : studnetsAddressDetails) {
AddressStruc addressDetails = entityManager.find(AddressStruc.class, new AddressId(
studentAddress.getAddressId().getSubmissionId(), studentAddress.getAddressId().getRowId()));
if (addressDetails != null) {
entityManager.merge(updateStudentDetails(addressDetails, studentAddress));
entityManager.flush();
}
}
} catch (Exception e) {
log.error("Exception occured while updating Address(method-->updateStudentAddress))-->" + e);
}
}
异步方法调用 updateStudentAddress 方法
public AsyncResult<StudentStatusModel> asyncAddressDetails(int startRow, int noOfRecord, int submissionId) {
// method for fetching record based on the start row provided
Collection<AddressStruc> addressList = studentEjb.getAddressBySubmissionId(startRow, noOfRecord, submissionId);
StudentStatusModel status = new StudentStatusModel();
status.setStartRow(startRow);
status.setRetry(false);
status.setMessage(null);
// invoke the webservice and generate student for the given address
if (StudentUtil.webServiceFailed <= 5) {
OutputModel outputModel = invokeWebservice(addressList, status);
if ((outputModel != null) && (outputModel.getStudentModels().size() > 0)) {
// update the address details based on the submissionId+rowId
studentEjb.updateStudentAddress(new ArrayList<>(convertModelToEntity(outputModel).values()));
}
}
return new AsyncResult<StudentStatusModel>(status);
}
我正在使用容器管理的实体管理器进行数据库转换。
每个线程调用 updateStudentAddress 方法并更新 100 条记录。
由于这个作业是一个长时间运行的作业,一段时间后 jboss 无法与 oracle 建立进一步的连接。
有什么办法可以解决这个问题吗?
最佳答案
我觉得问题可能是里面的异常处理:asyncAddressDetails
在 RuntimeException 或 ApplicationException 导致事务回滚后,我们在 jboss7 中发生了此错误,当捕获到此异常时,应用程序代码随后在当前事务上下文完成之前对 EntityManager 进行了进一步操作。
例子:
void methodInNewTransaction() {
try {
dao.inRequiredTransaction();
} catch (RuntimeException ex) {
; // ignore it
}
dao.secondCallInRequiredTransaction();
}
当忽略 RuntimeException 时,secondCallInRequiredTransaction 可能会导致错误。
如何解决这个问题,我看到了以下可能性:
关于java - 发生 org.hibernate.exception.GenericJDBCException : Could not open connection for long running process,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47203326/
OpenAL.org && 创意开发网站已关闭。我选择替代版本 OpenAL Soft .我很担心,因为在 OpenAL Soft 的二进制安装中我找不到 alut.h header 。 alut.h
我使用 Android Studio 已经有一段时间了,但有一天应用程序突然出错了。当我尝试单击我的目录以查找要导入或打开的文件时,应用程序变得异常缓慢并且根本没有响应。当我最终成功切换到存储我的文件
自 Firefox 4 以来,这似乎是一个奇怪的功能变化。在使用 window.open() 打开一个窗口后,当用鼠标中键单击打开的窗口中的链接时(或右键单击并选择“在新窗口中打开”选项卡') 导致链
我无法从 Open::URI 的 rdoc 中得知当我这样做时返回的是什么: result = open(url) URL 返回 XML,但我如何查看/解析 XML? 最佳答案 open 返回一个 I
经常开发asp但对于细致的说法,真实不太清楚,这里简单的介绍下。 一般情况下 读取数据都是用rs.open sql,conn,1,1 修改数据:rs.open sql,conn,1,3 删除
关于 pathlib 标准库中的模块,是 path.open() 方法只是内置 open() 的“包装器”功能? 最佳答案 如果您阅读了 source code的 pathlib.Path.open你
我想将 Open Liberty 运行时的语言更改为 en_US从 Eclipse IDE 中,但我不知道如何。 也尝试使用 JVM 参数的首选项来设置它,但它没有用。 -Duser.language
这是我所拥有的: 参数“opener”未在可能的函数调用参数中列出。这是 PyCharm 错误还是其他原因? PyCharm 2018.3.5 社区版,Windows 7 上的 Python 3.6.
我正在使用 Tinkerpop 的 GraphFactory.open(Configuration 配置) Java 命令来访问 Neo4j 数据库。 一个最低限度的工作示例是: Configurat
这个问题在这里已经有了答案: What is the python "with" statement designed for? (11 个答案) 关闭 7 年前。 我没有使用过 with 语句,但
我正在玩 python 3.5 中的 open 函数。我不明白 opener 参数(最后一个参数)在 open 函数中的用法。根据 python 文档:可以通过将可调用对象作为打开器传递来使用自定义打
关闭。此题需要details or clarity 。目前不接受答案。 想要改进这个问题吗?通过 editing this post 添加详细信息并澄清问题. 已关闭 5 年前。 Improve th
我试图用 Python 来做一些模拟 3D 声音的工作。我试图运行此代码(答案中提供):Python openAL 3D sound类似,两次都收到: ModuleNotFoundError: No
我一直认为 open 和 io.open 可以互换。 显然不是,如果我相信这个片段: import ctypes, io class POINT(ctypes.Structure): _fie
这个问题在这里已经有了答案: What's the difference between io.open() and os.open() on Python? (7 个答案) 关闭 9 年前。 我是
我正在尝试更好地了解 WCF 的一些内部工作原理。我已经做了相当多的环顾四周,但我无法找到关于 ChannelFactory.Open() 与 IClientChannel.Open() 相比的明确解
这个问题在这里已经有了答案: What is the python "with" statement designed for? (11 个答案) 关闭 7 年前。 我知道有很多关于在 python
CFSDN坚持开源创造价值,我们致力于搭建一个资源共享平台,让每一个IT人在这里找到属于你的精彩世界. 这篇CFSDN的博客文章adodb.recordset.open(rs.open)方法参数详解由
不久前我遇到了一个interesting security hole Link 看起来足够无害,但有一个漏洞,因为默认情况下,正在打开的页面允许打开的页面通过 window.opener 回调到它。有
这在我的应用程序上运行良好,但由于某种原因我无法让它在这里正常工作。无论如何,我的问题是,当我单击列表标题时,我想关闭之前打开的列表标题并仅保留事件的列表标题打开。目前它会打开我点击的所有内容,但也会
我是一名优秀的程序员,十分优秀!