无法连接到Java应用程序中的SQLServer数据库
问题描述：
我正在尝试开发的JSF Web应用程序中连接到我的数据库。 使用Windows 7，NetBeans 6.9.1，SQLServer 2008，Glassfish 3.3。无法连接到Java应用程序中的SQLServer数据库
我使用sqljdbc4.jar司机，我从我的XP系统，我已经成功连接到SQLServer的2005年
我已验证的SQLServer 2008我的系统上运行，并且我可以连接到复制该数据库通过SQL Server Management Studio使用我尝试在应用程序中使用的用户名和密码。 SQL Server配置管理器显示IP连接端口是1433.所以我认为我的数据库设置正确。
我想我正在做的事情，但我只是无法连接到数据库。 有没有人有任何建议，为什么这是失败的，我可以检查什么？
谢谢。
这里是我的连接代码：
public void connectDB()
{
try
{
String connectionUrl = "jdbc:sqlserver://localhost:1433;databaseName=ROVRDEV;user=rovrdevuser;password=rovrdevuser";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection con = DriverManager.getConnection(connectionUrl);
System.out.println("Database connection = "+con);
}
catch(Exception e)
{
e.printStackTrace();
System.out.println("Error connecting to database. Error: "+e.getMessage());
}
}
当我尝试运行它，我得到的服务器日志以下异常：
SEVERE: com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host localhost, port 1433 has failed. Error: "Connection refused: connect. Verify the connection properties, check that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port, and that no firewall is blocking TCP connections to the port.".
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:170)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1049)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:833)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:716)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:841)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:207)
at rmsbackoffice.SessionBean1.connectDB(SessionBean1.java:130)
at rmsbackoffice.SessionBean1.doInit(SessionBean1.java:107)
at rmsbackoffice.SessionBean1.beforePhase(SessionBean1.java:88)
at rmsbackoffice.org$jboss$weld$bean-web-ManagedBean-class_rmsbackoffice$SessionBean1_$$_WeldClientProxy.beforePhase(org$jboss$weld$bean-web-ManagedBean-class_rmsbackoffice$SessionBean1_$$_WeldClientProxy.java)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.el.parser.AstValue.invoke(AstValue.java:234)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:43)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:56)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.UIViewRoot.notifyPhaseListeners(UIViewRoot.java:1050)
at javax.faces.component.UIViewRoot.notifyBefore(UIViewRoot.java:845)
at javax.faces.component.UIViewRoot.encodeBegin(UIViewRoot.java:959)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1754)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:401)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:662)
答
The TCP/IP connection to the host localhost, port 1433 has failed. Error: "Connection refused: connect. Verify the connection properties, check that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port, and that no firewall is blocking TCP connections to the port.
检查你的SQL Server设置允许接受TCP/IP连接。启用TCP/IP并重新启动SQL Server。然后再次测试你的代码。
答
在企业管理器去属性 - >连接，并检查 “允许远程连接到这台服务器。”还要确保Windows防火墙中的端口1433未被阻止。最后，我会停止使用Microsoft JDBC jar。 jTDS我运气好多了。
答
我只是试图改变主机名和IP
"jdbc:sqlserver://localhost:1433;databaseName=ROVRDEV;user=rovrdevuser;password=rovrdevuser";
成为
"jdbc:sqlserver://127.0.0.1:1433;databaseName=ROVRDEV;user=rovrdevuser;password=rovrdevuser";
也许只是因为这一个 - >
答
实例名中缺少您连接字符串。
如果你的SQL Server实例的名称是 “SQL2005”，那么它应该像.....
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection con = DriverManager.getConnection("jdbc:sqlserver://localhost:1433;instanceName=SQL2005;databaseName=ROVRDEV","rovrdevuser","rovrdevuser");
答
也检查SQL Server浏览器不 服务运行 - > SQL Server的浏览器 - >启动
我该怎么做？ – Burferd
就是这样，我检查了配置管理器中的其他条目，但网络条目未启用。谢谢。 – Burferd