Postgresql
伺服器的 DateStyle 參數已更改為 ISO。JDBC 驅動程序要求 DateStyle 以 ISO 開頭才能正確操作
我在 CentOS Linux 7.4 上使用 PostgreSQL 9.6.6 並在升級 postgresql-jdbc 軟體包後 -
# sudo yum update Failed to set locale, defaulting to C Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.fra10.de.leaseweb.net * epel: mirror.wiuwiu.de * extras: centosmirror.netcup.net * updates: mirror.wiuwiu.de Resolving Dependencies --> Running transaction check ---> Package java-1.8.0-openjdk.x86_64 1:1.8.0.151-5.b12.el7_4 will be updated ---> Package java-1.8.0-openjdk.x86_64 1:1.8.0.161-0.b14.el7_4 will be an update ---> Package java-1.8.0-openjdk-headless.x86_64 1:1.8.0.151-5.b12.el7_4 will be updated ---> Package java-1.8.0-openjdk-headless.x86_64 1:1.8.0.161-0.b14.el7_4 will be an update ---> Package postgresql-jdbc.noarch 0:42.1.4-1.rhel7 will be updated ---> Package postgresql-jdbc.noarch 0:42.2.0-1.rhel7 will be an update ---> Package postgresql-jdbc-javadoc.noarch 0:42.1.4-1.rhel7 will be updated ---> Package postgresql-jdbc-javadoc.noarch 0:42.2.0-1.rhel7 will be an update --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================================== Package Arch Version Repository Size ============================================================================================================================================================== Updating: java-1.8.0-openjdk x86_64 1:1.8.0.161-0.b14.el7_4 updates 243 k java-1.8.0-openjdk-headless x86_64 1:1.8.0.161-0.b14.el7_4 updates 32 M postgresql-jdbc noarch 42.2.0-1.rhel7 pgdg96 566 k postgresql-jdbc-javadoc noarch 42.2.0-1.rhel7 pgdg96 456 k Transaction Summary ============================================================================================================================================================== Upgrade 4 Packages Total size: 33 M Total download size: 32 M Is this ok [y/d/N]: y Downloading packages: Delta RPMs disabled because /usr/bin/applydeltarpm not installed. (1/2): java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64.rpm | 243 kB 00:00:00 (2/2): java-1.8.0-openjdk-headless-1.8.0.161-0.b14.el7_4.x86_64.rpm | 32 MB 00:00:00 -------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 45 MB/s | 32 MB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Updating : 1:java-1.8.0-openjdk-headless-1.8.0.161-0.b14.el7_4.x86_64 1/8 warning: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64/jre/lib/security/java.security created as /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64/jre/lib/security/java.security.rpmnew restored /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64/jre/lib/security/java.security.rpmnew to /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64/jre/lib/security/java.security Updating : 1:java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64 2/8 Updating : postgresql-jdbc-42.2.0-1.rhel7.noarch 3/8 Updating : postgresql-jdbc-javadoc-42.2.0-1.rhel7.noarch 4/8 Cleanup : postgresql-jdbc-42.1.4-1.rhel7.noarch 5/8 Cleanup : 1:java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 6/8 Cleanup : postgresql-jdbc-javadoc-42.1.4-1.rhel7.noarch 7/8 Cleanup : 1:java-1.8.0-openjdk-headless-1.8.0.151-5.b12.el7_4.x86_64 8/8 Verifying : 1:java-1.8.0-openjdk-1.8.0.161-0.b14.el7_4.x86_64 1/8 Verifying : postgresql-jdbc-42.2.0-1.rhel7.noarch 2/8 Verifying : 1:java-1.8.0-openjdk-headless-1.8.0.161-0.b14.el7_4.x86_64 3/8 Verifying : postgresql-jdbc-javadoc-42.2.0-1.rhel7.noarch 4/8 Verifying : 1:java-1.8.0-openjdk-1.8.0.151-5.b12.el7_4.x86_64 5/8 Verifying : postgresql-jdbc-javadoc-42.1.4-1.rhel7.noarch 6/8 Verifying : postgresql-jdbc-42.1.4-1.rhel7.noarch 7/8 Verifying : 1:java-1.8.0-openjdk-headless-1.8.0.151-5.b12.el7_4.x86_64 8/8 Updated: java-1.8.0-openjdk.x86_64 1:1.8.0.161-0.b14.el7_4 java-1.8.0-openjdk-headless.x86_64 1:1.8.0.161-0.b14.el7_4 postgresql-jdbc.noarch 0:42.2.0-1.rhel7 postgresql-jdbc-javadoc.noarch 0:42.2.0-1.rhel7 Complete!在連接時，我以前工作的 Java 程式碼（在 Jetty 9.4.7 中作為 WAR 執行）突然出現異常 -
String SQL_MERGE_USERS = "SELECT words_merge_users(?::jsonb, ?::inet, ?::text, ?::text, ?::text)"; // the next line in MyListener.java throws the exception try (Connection db = DriverManager.getConnection(DATABASE_URL, DATABASE_USER, DATABASE_PASS); PreparedStatement st = db.prepareStatement(SQL_MERGE_USERS)) { st.setString(1, users); st.setString(2, ip); st.setString(3, fcm); st.setString(4, apns); st.setString(5, adm); ResultSet rs = st.executeQuery();這裡是從 Jetty 日誌中複製的異常（我在埠 6432 使用 pgbouncer）-
WARNING: SQLException occurred while connecting to 127.0.0.1:6432 org.postgresql.util.PSQLException: The server's DateStyle parameter was changed to ISO. The JDBC driver requires DateStyle to begin with ISO for correct operation. at org.postgresql.core.v3.QueryExecutorImpl.receiveParameterStatus(QueryExecutorImpl.java:2603) at org.postgresql.core.v3.QueryExecutorImpl.readStartupMessages(QueryExecutorImpl.java:2569) at org.postgresql.core.v3.QueryExecutorImpl.<init>(QueryExecutorImpl.java:131) at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:212) at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) at org.postgresql.jdbc.PgConnection.<init>(PgConnection.java:195) at org.postgresql.Driver.makeConnection(Driver.java:452) at org.postgresql.Driver.connect(Driver.java:254) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:247) at de.slova.websockets.MyListener.mergeUsers(MyListener.java:152) at de.slova.websockets.MyListener.handleLogin(MyListener.java:208) at de.slova.websockets.MyListener.onWebSocketText(MyListener.java:83) at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onTextMessage(JettyListenerEventDriver.java:189) at org.eclipse.jetty.websocket.common.message.SimpleTextMessage.messageComplete(SimpleTextMessage.java:69) at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.appendMessage(AbstractEventDriver.java:66) at org.eclipse.jetty.websocket.common.events.JettyListenerEventDriver.onTextFrame(JettyListenerEventDriver.java:158) at org.eclipse.jetty.websocket.common.events.AbstractEventDriver.incomingFrame(AbstractEventDriver.java:162) at org.eclipse.jetty.websocket.common.WebSocketSession.incomingFrame(WebSocketSession.java:375) at org.eclipse.jetty.websocket.common.extensions.AbstractExtension.nextIncomingFrame(AbstractExtension.java:182) at org.eclipse.jetty.websocket.common.extensions.compress.PerMessageDeflateExtension.nextIncomingFrame(PerMessageDeflateExtension.java:105) at org.eclipse.jetty.websocket.common.extensions.compress.CompressExtension.forwardIncoming(CompressExtension.java:142) at org.eclipse.jetty.websocket.common.extensions.compress.PerMessageDeflateExtension.incomingFrame(PerMessageDeflateExtension.java:85) at org.eclipse.jetty.websocket.common.extensions.ExtensionStack.incomingFrame(ExtensionStack.java:220) at org.eclipse.jetty.websocket.common.Parser.notifyFrame(Parser.java:220) at org.eclipse.jetty.websocket.common.Parser.parse(Parser.java:256) at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.readParse(AbstractWebSocketConnection.java:679) at org.eclipse.jetty.websocket.common.io.AbstractWebSocketConnection.onFillable(AbstractWebSocketConnection.java:511) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124) at org.eclipse.jetty.util.thread.Invocable.invokePreferred(Invocable.java:128) at org.eclipse.jetty.util.thread.Invocable$InvocableExecutor.invoke(Invocable.java:222) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:294) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:199) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:673) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:591) at java.lang.Thread.run(Thread.java:745)我已經搜尋了DateStyle並且沒有太多關於這個錯誤的資訊。
從錯誤文本中我不確定要更改什麼 - 我應該修改我的 Java 程序還是應該更改我的 Linux 伺服器上的某些設置？
UDPATE：
我已經送出了一個錯誤問題 #1080
以防其他人遇到此問題，它已在 pgjdbc 42.2.1 中修復。只需升級您的版本，它應該可以工作。