Question

我正在以编程方式启动HSQLDB服务器，但是当我尝试将HSQLDB服务器与我正在开发的Web应用程序一起运行时，我遇到了端口冲突。我在webapp端遇到以下错误

java.util.concurrent.ExecutionException: java.net.BindException: Address already in use: JVM_Bind

＆安培;我在数据库服务器端遇到此错误：

org.hsqldb.HsqlException: Client driver version greater than '-1852.-79.-80.-35' is required.  HSQLDB server version is '2.3.2'
        at org.hsqldb.error.Error.error(Unknown Source)
        at org.hsqldb.server.ServerConnection.init(Unknown Source)
        at org.hsqldb.server.ServerConnection.run(Unknown Source)
        at java.lang.Thread.run(Thread.java:745)

我不确定为什么会收到此错误。但是，当我查看webapp和HSQLDB使用的端口时，我发现它们都使用9001，因此我认为问题与冲突端口有关，而与HSQLDB版本无关。但是，我不确定。

据我所知，HSQLDB使用的默认端口号为9001，我尝试通过将要使用的端口设置为9137来更改此代码。

    public void startDBServer() {
    HsqlProperties props = new HsqlProperties();
    props.setProperty("server.database.0", "file:" + dbLocation + "webappdb;");
    props.setProperty("server.dbname.0", "webappdb");
    props.setProperty("server.port", "9137");
    dbServer = new org.hsqldb.Server();
    try {
        dbServer.setProperties(props);
    } catch (Exception e) {
        return;
    }
    dbServer.start();
}

然而，当我尝试启动数据库服务器时，我得到以下错误堆栈跟踪：

java.sql.SQLTransientConnectionException: java.net.ConnectException: Connection refused: connect2015-04-27 11:42:02,306 INFO
 [Thread-2] server.DatabaseWorker (DatabaseWorker.java:20) - Database server is Running

        at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
        at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
        at org.hsqldb.jdbc.JDBCConnection.<init>(Unknown Source)
        at org.hsqldb.jdbc.JDBCDriver.getConnection(Unknown Source)
        at org.hsqldb.jdbc.JDBCDriver.connect(Unknown Source)
        at java.sql.DriverManager.getConnection(DriverManager.java:664)
        at java.sql.DriverManager.getConnection(DriverManager.java:247)
        at rideabike.server.DatabaseManager.getDBConn(DatabaseManager.java:37)
        at rideabike.server.DatabaseWorker.run(DatabaseWorker.java:18)
Caused by: org.hsqldb.HsqlException: java.net.ConnectException: Connection refused: connect
        at org.hsqldb.ClientConnection.openConnection(Unknown Source)
        at org.hsqldb.ClientConnection.initConnection(Unknown Source)
        at org.hsqldb.ClientConnection.<init>(Unknown Source)
        ... 7 more
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.connect0(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at java.net.Socket.connect(Socket.java:538)
        at java.net.Socket.<init>(Socket.java:434)
        at java.net.Socket.<init>(Socket.java:211)
        at org.hsqldb.server.HsqlSocketFactory.createSocket(Unknown Source)
        ... 10 more

我还需要做些什么来尝试更改HSQLDB服务器使用的端口吗？非常感谢任何帮助，谢谢。

Answer 1

如果更改服务器上的默认端口，则需要在连接URL中指定端口：

jdbc:hsqldb:hsql://localhost:9137/webappdb

如何更改HSQLDB服务器侦听的端口

1 个答案: