HTTP狀態500 - 無法提取的ResultSet - 休眠

HTTP Status 500 - could not extract ResultSet 

type Exception report 

message could not extract ResultSet 

description The server encountered an internal error that prevented it from fulfilling this request. 

exception 

1. 

org.hibernate.exception.JDBCConnectionException: could not extract ResultSet 
    org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132) 
    org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) 
    org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) 
    org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110) 
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:61) 
    org.hibernate.loader.Loader.getResultSet(Loader.java:2040) 
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1837) 
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816) 
    org.hibernate.loader.Loader.doQuery(Loader.java:900) 
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342) 
    org.hibernate.loader.Loader.doList(Loader.java:2526) 
    org.hibernate.loader.Loader.doList(Loader.java:2512) 
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2342) 
    org.hibernate.loader.Loader.list(Loader.java:2337) 
    org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:338) 
    org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:1827) 
    org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:231) 
    org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:157) 
    com.HealthCareInsights.Dao.RegistrationDao.checkUser(RegistrationDao.java:45) 
    com.HealthCareInsights.Controller.Registration.doPost(Registration.java:80) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
root cause 

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 

The last packet successfully received from the server was 475,905 milliseconds ago. The last packet sent successfully to the server was 1 milliseconds ago. 
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
    sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
    java.lang.reflect.Constructor.newInstance(Constructor.java:513) 
    com.mysql.jdbc.Util.handleNewInstance(Util.java:411) 
    com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116) 
    com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3102) 
    com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2991) 
    com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3532) 
    com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2002) 
    com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2163) 
    com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2624) 
    com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2127) 
    com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2293) 
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:56) 
    org.hibernate.loader.Loader.getResultSet(Loader.java:2040) 
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1837) 
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816) 
    org.hibernate.loader.Loader.doQuery(Loader.java:900) 
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342) 
    org.hibernate.loader.Loader.doList(Loader.java:2526) 
    org.hibernate.loader.Loader.doList(Loader.java:2512) 
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2342) 
    org.hibernate.loader.Loader.list(Loader.java:2337) 
    org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:338) 
    org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:1827) 
    org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:231) 
    org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:157) 
    com.HealthCareInsights.Dao.RegistrationDao.checkUser(RegistrationDao.java:45) 
    com.HealthCareInsights.Controller.Registration.doPost(Registration.java:80) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
root cause 

java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. 
    com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2552) 
    com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3002) 
    com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2991) 
    com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3532) 
    com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2002) 
    com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2163) 
    com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2624) 
    com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2127) 
    com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2293) 
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:56) 
    org.hibernate.loader.Loader.getResultSet(Loader.java:2040) 
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1837) 
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816) 
    org.hibernate.loader.Loader.doQuery(Loader.java:900) 
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342) 
    org.hibernate.loader.Loader.doList(Loader.java:2526) 
    org.hibernate.loader.Loader.doList(Loader.java:2512) 
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2342) 
    org.hibernate.loader.Loader.list(Loader.java:2337) 
    org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:338) 
    org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:1827) 
    org.hibernate.internal.AbstractSessionImpl.list(AbstractSessionImpl.java:231) 
    org.hibernate.internal.SQLQueryImpl.list(SQLQueryImpl.java:157) 
    com.HealthCareInsights.Dao.RegistrationDao.checkUser(RegistrationDao.java:45) 
    com.HealthCareInsights.Controller.Registration.doPost(Registration.java:80) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.39 logs.

這是我收到的錯誤，我的連接池的配置是HTTP狀態500 - 無法提取的ResultSet - 休眠

   <property name="hibernate.c3p0.min_size">5</property> 
      <property name="hibernate.c3p0.max_size">20</property> 
      <property name="hibernate.c3p0.timeout">3500</property> 
      <property name="hibernate.c3p0.validate">true</property> 
      <property ame="hibernate.c3p0.preferredTestQuery">SELECT 1</property> 
      <property name="hibernate.c3p0.max_statements">50</property> 
      <property name="hibernate.c3p0.idle_test_period">3000</property>

我用Google搜索這個解決方案，但因此未找到正確的one.This錯誤發生只有一些時間。當我提交表格時，花點時間後會發生這個錯誤。否則，應用程序工作正常。

來源

2013-09-26 SKR

是你的問題解決了嗎？ –

不行。您的解決方案無法正常工作。我仍然得到那個錯誤。 – SKR

請註明在JDBC URL autoReconnect的=真：

的jdbc：mysql的：//主機名：端口/ DB_NAME autoReconnect的=真

來源

2013-09-26 17:02:30

我認爲它有一些副作用，當我們使用autoReconnect = true。我應該繼續使用嗎？ – SKR

如果你想連接的可靠性，然後繼續 –

這沒有奏效。我仍然得到同樣的錯誤。 – SKR

HTTP狀態500 - 無法提取的ResultSet - 休眠

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