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獲取org.hibernate.exception.JDBCConnectionException：即使通過JNDI也無法執行查詢

2011-03-17 28 views
1

我使用Struts2 + JSP + Tomcat6 + Hibernate + Mysql作爲我的J2EE應用程序框架。以下爲this主題，我遇到了獲取此問題的問題錯誤：獲取org.hibernate.exception.JDBCConnectionException：即使通過JNDI也無法執行查詢

org.hibernate.exception.JDBCConnectionException: could not execute query

這似乎是因爲，MySQL的n個小時後關閉它的連接的事實。 隨着人們回答there我改變了休眠的配置讓我的DB連接，通過JNDI.here是我已經採取做這個動作的過程：

我的hibernate.cfg.xml：

<hibernate-configuration> 
    <session-factory> 

    <property name="connection.datasource">java:comp/env/jdbc/hposg</property> 
    <property name="dialect">org.hibernate.dialect.MySQLDialect</property> 
    <property name="show_sql">true</property> 
    <property name="current_session_context_class">thread</property> 
    <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> 
    <property name="hbm2ddl.auto">update</property> 
    <property name="hibernate.max_fetch_depth">3</property> 

     <!-- Mapping files --> 

    </session-factory> 
</hibernate-configuration>

，我已經把在META-INF derictory context.xml文件：

<Context> 
    <Resource name="jdbc/hposg" 
      global="jdbc/hposg" 
      auth="Container" 
      type="javax.sql.DataSource" 
      username="root" 
      password="" 
      driverClassName="com.mysql.jdbc.Driver" 
      url="jdbc:mysql://localhost:3306/hposg?autoReconnect=true&amp;characterEncoding=UTF-8" 
      maxActive="8" 
      maxIdle="4"/> 
</Context>

，並在web.xml這些修改：

<resource-ref> 
    <description>DB Connection</description> 
    <res-ref-name>jdbc/hposg</res-ref-name> 
    <res-type>javax.sql.DataSource</res-type> 
    <res-auth>Container</res-auth> 
</resource-ref>

奇怪的是，我仍然得到同樣的錯誤！這裏是堆棧跟蹤：

'org.hibernate.exception.JDBCConnectionException: could not execute query 
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:99) 
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) 
    at org.hibernate.loader.Loader.doList(Loader.java:2297) 
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2172) 
    at org.hibernate.loader.Loader.list(Loader.java:2167) 
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:448) 
    at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363) 
    at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) 
    at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1258) 
    at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) 
    at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:859) 
    at com.hposg.domain.HPOSG.getPlayerByID(HPOSG.java:117) 
    at com.hposg.login.UserSession.getPlayerById(UserSession.java:39) 
    at com.hposg.controller.struts.PortfolioLoadAction.execute(PortfolioLoadAction.java:72) 
    at sun.reflect.GeneratedMethodAccessor1032.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:616) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243) 
    at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165) 
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252) 
    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) 
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) 
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) 
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138) 
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176) 
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) 
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) 
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488) 
    at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 
    at java.lang.Thread.run(Thread.java:636) 
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 

Last packet sent to the server was 0 ms ago. 
    at sun.reflect.GeneratedConstructorAccessor109.newInstance(Unknown Source) 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:532) 
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:353) 
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074) 
    at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2720) 
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1582) 
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1710) 
    at com.mysql.jdbc.Connection.execSQL(Connection.java:2436) 
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1402) 
    at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1556) 
    at org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93) 
    at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208) 
    at org.hibernate.loader.Loader.getResultSet(Loader.java:1849) 
    at org.hibernate.loader.Loader.doQuery(Loader.java:718) 
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:270) 
    at org.hibernate.loader.Loader.doList(Loader.java:2294) 
    ... 74 more 
Caused by: java.net.SocketException: Broken pipe 
    at java.net.SocketOutputStream.socketWrite0(Native Method) 
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109) 
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153) 
    at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) 
    at java.io.BufferedOutputStream.write(BufferedOutputStream.java:126) 
    at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2703) 
    ... 85 more 
'

[編輯] 我做出context.xml中一些變化和問題似乎解決：

maxActive="-1" 
maxIdle="30" 
validationQuery="SELECT 1" 
testWhileIdle="true"

[EDIT_2] 儘管我提到的修改之前，不幸的是我仍然得到相同的錯誤。有任何想法嗎？

來源

2011-03-17 SJ.Jafari

回答

3

我們在使用Tomcat6 + Hibernate + MySQL（和我們的例子中的Spring）的生產系統中遇到了同樣的問題，我們發現的唯一可靠解決方案是將連接超時設置爲MySQL配置中的一個大值。我不記得具體情況，但我認爲在驗證池資源有效時，底層的commons-pool代碼存在問題。

我們沒有嘗試的另一種可能性是使用除DBCP以外的備用連接池機制。下一步嘗試將是C3PO

來源

2011-04-03 14:12:57

+0

C3P0完成這項工作！ – 2013-05-16 11:54:46

1

嘗試將​​添加到JDBC URL。

來源

2011-03-17 18:57:41

+0

感謝布倫特非常有幫助的，因爲我在[編輯]部分上面提到的，我做了一些改變，它似乎解決問題。否則，我會考慮你的想法。 – 2011-03-19 09:26:18

+0

我做到了這一點，不幸的是情況是一樣的。 – 2011-04-03 13:47:12

1

您的網址是
url="jdbc:mysql://localhost:3306/hposg?autoReconnect=true&amp;characterEncoding=UTF-8"。
但不建議使用autoReconnect（here）。相反，嘗試增加超時，將此添加到my.cnf：

[mysqld] 
interactive_timeout=864000 
wait_timeout=864000

來源

2013-03-14 12:14:24 tylerdurden

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