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我有一个非常简单的 java 类，我尝试像这样运行 H2 DB：

public static void main(String[] args) {
     Connection conn = null;
                try {
            Class.forName("org.h2.Driver");
            Server server = Server.createTcpServer("-tcpPort", "50001", "-tcpAllowOthers").start();

            conn = DriverManager.getConnection(
                    "jdbc:h2:tcp://localhost/~/H2TestDB/SMPS_DK", "sa", "sa");

我试图复制我在此处和 H2 文档中找到的内容，但由于某种原因，连接被拒绝。我试图在这里找到解决方案，但到目前为止还没有成功。仅供参考：我是一个菜鸟，所以如果可能的话，得到更详细的答案会很棒;）提前谢谢！

这是堆栈跟踪：

> org.h2.jdbc.JdbcSQLException: Verbindung ist unterbrochen: "java.net.ConnectException: Connection refused: connect: localhost"
Connection is broken: "java.net.ConnectException: Connection refused: connect: localhost" [90067-196]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:345)
    at org.h2.message.DbException.get(DbException.java:168)
    at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:457)
    at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:334)
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:116)
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:100)
    at org.h2.Driver.connect(Driver.java:69)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at java.sql.DriverManager.getConnection(Unknown Source)
    at connection.Main.main(Main.java:26)
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at org.h2.util.NetUtils.createSocket(NetUtils.java:103)
    at org.h2.util.NetUtils.createSocket(NetUtils.java:83)
    at org.h2.engine.SessionRemote.initTransfer(SessionRemote.java:115)
    at org.h2.engine.SessionRemote.connectServer(SessionRemote.java:453)
    ... 7 more
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