到主机 的 TCP/IP 连接失败。 java.net.ConnectException: Connection refused: connect

Question

我用的sqlserver2005
public class ConnDB 
{
public Connection conn=null;
public Statement stmt=null;
public ResultSet rs=null;
private static String propFileName="/com/connDB.properties";
private static Properties prop=new Properties();
private static String dbClassName="com.microsoft.sqlserver.jdbc.SQLServerDriver";//com.microsoft.jdbc.sqlserver.SQLServerDriver
private static String dbUrl="jdbc:sqlserver://127.0.0.1:1422;DatabaseName=OnLineExam";
private static String dbUser="sa";
private static String dbPwd="123";

    public static Connection getConnection()
    {
     Connection conn=null;
     try
     {
     Class.forName(dbClassName).newInstance();
     conn=DriverManager.getConnection(dbUrl,dbUser,dbPwd);
     }
     catch(Exception e)
     {
     e.printStackTrace();
     }
     if(conn==null)
     {
     System.err.println("数据库连接失败!");
     }
     return conn;
    }
}以下是异常代码
com.microsoft.sqlserver.jdbc.SQLServerException: 到主机  的 TCP/IP 连接失败。 java.net.ConnectException: Connection refused: connect
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:185)
at com.hs.core.ConnDB.getConnection(ConnDB.java:40)
at com.hs.core.ConnDB.excuteQuery(ConnDB.java:56)
at com.hs.dao.StudentDAO.checkStudent(StudentDAO.java:17)
at com.hs.action.StudentAction.studentLogin(StudentAction.java:64)
at com.hs.action.StudentAction.execute(StudentAction.java:26)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.hs.core.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:39)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
数据库连接失败!
2010-2-24 17:00:37 org.apache.struts.action.RequestProcessor processException
警告: Unhandled Exception thrown: class java.lang.NullPointerException
2010-2-24 17:00:37 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at com.hs.core.ConnDB.excuteQuery(ConnDB.java:57)
at com.hs.dao.StudentDAO.checkStudent(StudentDAO.java:17)
at com.hs.action.StudentAction.studentLogin(StudentAction.java:64)
at com.hs.action.StudentAction.execute(StudentAction.java:26)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.hs.core.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:39)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)请高手来看看为啥出错

Answer 1

连不上db server，看看你的网络环境还有db的ip是否是对的

Answer 2

端口我改成1422了,我在客户端协义的TCP/IP里改的,又重启服务了,连机器都重启了

Answer 3

端口没配置好。
开始==>所有程序==>microsoft SqlServer2005==>配置工具==>sqlserver configuration manager照这样配置完，重启下服务器就可以了。

Answer 4

sqlserver2005数据库的TCP/IP协议未开启

Answer 5

谢谢各位,我就是端口号没设置好,IPAII最后那个端口号没设置

Answer 6

谢谢你们的回答，我也是IPALL里没有设置，这是什么意思 ？这个有什么用？

Answer 7

按照7楼的改了TCP/IP后，运行程序时，一直卡在那，没有动静，这是怎么回事呢？求指教

Answer 8

谢谢你们的回答，我也是IPALL里没有设置