2

我正在使用 jar jtds-1.3.0.jar 通过休眠连接到 MS SQL，下面是配置文件 

<hibernate-configuration>
<session-factory>
    <!-- Database connection settings -->
    <property name="connection.url">jdbc:jtds:sqlserver://localhost/login</property>
    <property name="connection.driver_class">net.sourceforge.jtds.jdbc.Driver</property>
    <property name="connection.username">sa</property>
    <property name="connection.password">user</property>

    <!-- JDBC connection pool (use the built-in) -->
    <property name="connection.pool_size">1</property>

    <!-- SQL dialect -->
    <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>


    <!-- Enable Hibernate's automatic session context management -->
    <property name="current_session_context_class">thread</property>

    <!-- Echo all executed SQL to stdout -->

        <property name="show_sql">true</property>
    <!--  Drop and re-create the database schema on startup -->
    <property name="hbm2ddl.auto">update</property>

    <!-- configuration pool via c3p0--> 
    <property name="c3p0.acquire_increment">5</property> 
    <property name="c3p0.idle_test_period">100</property> <!-- seconds --> 
    <property name="c3p0.max_size">20</property> 
    <property name="c3p0.max_statements">50</property> 
    <property name="c3p0.min_size">5</property> 
    <property name="c3p0.timeout">1800</property> <!-- seconds --> 
    <property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
    <!--Basic user functionality-->

</session-factory>

但是每次我运行我的项目时，它都会出现网络错误和连接被拒绝的错误。我为仍然给出错误的这个链接提供了参考。下面是我的堆栈跟踪

java.sql.SQLException: Network error IOException: Connection refused: connect
at net.sourceforge.jtds.jdbc.JtdsConnection.<init>(JtdsConnection.java:434)
at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:183)
at com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:134)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:183)
at com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:172)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:152)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1074)
at com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1061)
at com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32)
at com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1796)
at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:635) Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(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 sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.sourceforge.jtds.jdbc.SharedSocket.createSocketForJDBC3(SharedSocket.java:300)
at net.sourceforge.jtds.jdbc.SharedSocket.<init>(SharedSocket.java:253)
at net.sourceforge.jtds.jdbc.JtdsConnection.<init>(JtdsConnection.java:329)

下面是图片 服务器配置管理器 ，谁能告诉我哪里出错了。

4

4 回答 4

4

您确定您的服务器正在侦听端口 1433 吗？要确认实际问题出在 Java（即您的配置）上，请运行

telnet localhost 1433

如果你没有得到答案，那么 MS SQL 很可能没有在 1433 上运行。在 MS SQL 中有一个使用动态端口的选项，请确保你没有启用它。

http://frightanic.com/software-development/connecting-to-ms-sql-server-2012-express-through-jdbc-failed/：

第一个障碍是了解 MS SQL Express 默认使用动态端口。要从 Java 以 TCP/IP 方式连接，您需要手动配置静态端口。

于 2013-02-11T13:02:20.967 回答
2

是portNumber是可选的。默认值为 1433。如果您使用default，则不必port在URL.

<property name="connection.pool_size">10</property>

它一次只允许一个连接。我猜想在你的程序中你试图打开另一个会话的地方。

看看

Hibernate 配置连接池大小

于 2013-02-11T12:13:24.160 回答
2

尝试将网址更改为：

<property name="connection.url">jdbc:jtds:sqlserver://localhost:1443;DatabaseName=login</property>

将模式名称与服务器地址分开。

我使用 DBVisualizer 连接到 MS Sql，它显示了 url 配置的格式：

URL Format: jdbc:jtds:sqlserver://<server>:<port1443>;DatabaseName=<database>
于 2013-02-11T13:08:47.853 回答
1

我找到了解决问题的方法。我通过引用此讨论将端口号从 1433 更改为 1434，该端口号处于活动状态。谢谢大家的时间

于 2013-02-12T11:27:11.837 回答