Invalid state, the Connection object is closed.
That line makes me nervous.
快疯掉了，从昨晚到现在一直没有解决的问题；前天写了一个导入程序;
JDK1.5+jTDS1.2.2+SQL SERVER 2000(SP3)+MySQL5;
从MySQL中导入抓取回来的数据，到SQL SERVER里，程序跑了一会就提示上面那错误:
java.sql.SQLException: Invalid state, the Connection object is closed.
at net.sourceforge.jtds.jdbc.ConnectionJDBC2.checkOpen(ConnectionJDBC.java:249)
折腾了一整天，还是没把问题解决，网上找了N多资料，看来这个问题相当少见，只在SUN的官方上找到一篇http://forum.java.sun.com/thread.jspa?threadID=678409&start=0&tstart=0
SQL SERVER也调试了，Connection打印出来也是是没有closed的，但都总是出现这个问题，真的快疯了；
请有经验的给点提示，小弟将发自内心的感谢!
public void insertMsData(......) {
Connection conn=null;
Statement stmt1=null;
Statement stmt2=null;
Statement stmt3=null;
String lname="重录";
String COM_ID=(getComid()+1)+"";
String Lnk_ID=(getLnkid()+1)+"";
String DeptName="人事部";
int j=0;
int t=0;
int k=0;
String sql="INSERT INTO CRM_Company ......";
String sql1="INSERT INTO CRM_Linkman (Lnk_ID,COM_ID,Lnk_Name,DeptName,Sex,PosType,SensType,Phone_Z,Phone_N,IsAdmin,DelFlag,RegisterDate) VALUES ("+Lnk_ID+","+Integer.parseInt(COM_ID)+",'"+lname+"','"+DeptName+"',"+1+","+3+","+1+","+0000+","+00000000+","+1+","+0+",convert(smalldatetime,"+RegisterDate+"))";
String sql2="INSERT INTO ShieldTable (S_ID,S_Company) VALUES ('"+COM_ID+"','"+COM_Name+"')";
try {
if (conn==null || conn.isClosed()) {
conn=dbc.getMSConnection();
}
System.out.println("@@@@@@@@conn:"+conn);
stmt1=conn.createStatement();
j=stmt1.executeUpdate(sql);
stmt2=conn.createStatement();
t=stmt2.executeUpdate(sql1);
stmt3=conn.createStatement();
k=stmt3.executeUpdate(sql2);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.exit(0);
}finally{
try {
if(stmt1!=null){
stmt1.close();
}
if(stmt2!=null){
stmt2.close();
}
if(stmt3!=null){
stmt3.close();
}
if(conn!=null){
conn.close();
conn=null;
}
} catch (SQLException e) {
e.printStackTrace();
}