1

我对 jax-rs REST 服务有疑问。

服务无法正常运行。每秒请求服务都会抛出异常：

HTTP Status 500 - could not execute query

type Exception report

message could not execute query

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

exception

org.hibernate.exception.JDBCConnectionException: could not execute query
    org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:74)
    org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
    org.hibernate.loader.Loader.doList(Loader.java:2147)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028)
    org.hibernate.loader.Loader.list(Loader.java:2023)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95)
    org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
    org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
    com.fit.utilities.BaseDAO.getAll_fetchEager(BaseDAO.java:62)
    com.fit.utilities.BaseDAO.getAll(BaseDAO.java:37)
    com.fit.servis.Korisnik_servis.PronadjiPrijatelje(Korisnik_servis.java:174)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1483)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1414)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection was implicitly closed by the driver.
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    java.lang.reflect.Constructor.newInstance(Unknown Source)
    com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
    com.mysql.jdbc.Util.getInstance(Util.java:384)
    com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1015)
    com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
    com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984)
    com.mysql.jdbc.SQLError.createSQLException(SQLError.java:929)
    com.mysql.jdbc.ConnectionImpl.throwConnectionClosedException(ConnectionImpl.java:1204)
    com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1191)
    com.mysql.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:4276)
    com.mysql.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:4242)
    org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:497)
    org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:415)
    org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
    org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1560)
    org.hibernate.loader.Loader.doQuery(Loader.java:661)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
    org.hibernate.loader.Loader.doList(Loader.java:2144)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028)
    org.hibernate.loader.Loader.list(Loader.java:2023)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95)
    org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
    org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
    com.fit.utilities.BaseDAO.getAll_fetchEager(BaseDAO.java:62)
    com.fit.utilities.BaseDAO.getAll(BaseDAO.java:37)
    com.fit.servis.Korisnik_servis.PronadjiPrijatelje(Korisnik_servis.java:174)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1483)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1414)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 22.477.953 milliseconds ago.  The last packet sent successfully to the server was 22.478.000 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    java.lang.reflect.Constructor.newInstance(Unknown Source)
    com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
    com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1122)
    com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3317)
    com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1941)
    com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114)
    com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2696)
    com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2105)
    com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2264)
    org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
    org.hibernate.loader.Loader.getResultSet(Loader.java:1668)
    org.hibernate.loader.Loader.doQuery(Loader.java:662)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
    org.hibernate.loader.Loader.doList(Loader.java:2144)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028)
    org.hibernate.loader.Loader.list(Loader.java:2023)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95)
    org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
    org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
    com.fit.utilities.BaseDAO.getAll_fetchEager(BaseDAO.java:62)
    com.fit.utilities.BaseDAO.getAll(BaseDAO.java:37)
    com.fit.servis.Korisnik_servis.Login(Korisnik_servis.java:32)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1483)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1414)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause

java.net.SocketException: Software caused connection abort: socket write error
    java.net.SocketOutputStream.socketWrite0(Native Method)
    java.net.SocketOutputStream.socketWrite(Unknown Source)
    java.net.SocketOutputStream.write(Unknown Source)
    java.io.BufferedOutputStream.flushBuffer(Unknown Source)
    java.io.BufferedOutputStream.flush(Unknown Source)
    com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3298)
    com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1941)
    com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114)
    com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2696)
    com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2105)
    com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2264)
    org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
    org.hibernate.loader.Loader.getResultSet(Loader.java:1668)
    org.hibernate.loader.Loader.doQuery(Loader.java:662)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
    org.hibernate.loader.Loader.doList(Loader.java:2144)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2028)
    org.hibernate.loader.Loader.list(Loader.java:2023)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95)
    org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
    org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
    com.fit.utilities.BaseDAO.getAll_fetchEager(BaseDAO.java:62)
    com.fit.utilities.BaseDAO.getAll(BaseDAO.java:37)
    com.fit.servis.Korisnik_servis.Login(Korisnik_servis.java:32)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    java.lang.reflect.Method.invoke(Unknown Source)
    com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
    com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
    com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
    com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
    com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
    com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1483)
    com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1414)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
    com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
    com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.32 logs.

Apache Tomcat/7.0.32

服务检索 JSON ..我认为问题是由于大小字节字符串。

成功响应示例：

[{
    "id": 2,
    "name": "haris",
    "surname": null,
    "gender": null,
    "age": null,
    "birthdate": null,
    "password": "1234",
    "username": "haris",
    "isOnline": null,
    "picture": "YORp0a9HAkEbrPYu2RcNwB4ExIMdvoD5/3uBgoz1"
}]
4

3 回答 3

1

问题出在您的 mysql 数据源配置中。尝试将这两个参数添加到数据源定义中：

 testOnBorrow="true" validationQuery="select 1"
于 2013-02-22T16:10:15.230 回答
1

我想这是服务器端的问题。它清楚地显示您的类BaseDAO在此方法中执行方法getAll_fetchEager您正在进行一些标准查询，但由于某种原因而失败。我相信如果您更正您的标准查询问题将会解决。尝试找出连接属性已正确设置并且您能够连接数据库。

于 2013-02-22T16:11:20.400 回答
1

我认为答案在堆栈跟踪中。

从服务器成功接收到的最后一个数据包是 22.477.953 毫秒前。最后一个成功发送到服务器的数据包是 22.478.000 毫秒前。比服务器配置的“wait_timeout”值长。您应该考虑在应用程序中使用之前使连接有效性过期和/或测试，增加客户端超时的服务器配置值，或使用连接器/J 连接属性“autoReconnect=true”来避免此问题。

与您的连接mysql没有保持打开状态，也没有设置为自动重新连接。

于 2013-02-22T16:13:08.183 回答