从java8连接到db2

Question

如何从java8连接到db2数据库，我需要从java8连接到db2数据库，因为jdbcodbc驱动已经被废弃，我尝试使用ibm驱动，但仍然无法连接。在下面的Bloc中，我添加了我在执行时面临的异常堆栈。

连接代码。

            try 
                {  
                String url= "jdbc:db2://XXX1.xx.xxxop:1210/Database";   
                String user="userName";
                Stirng password = "pwdd";                                                          
                Class.forName("com.ibm.db2.jcc.DB2Driver");                             
                System.out.println("**** Loaded the JDBC driver");
                con = DriverManager.getConnection (url, user, password);                 
                System.out.println("**** Created a JDBC connection to the data source");
                stmt = con.createStatement();                                            
                System.out.println("**** Created JDBC Statement object");
                rs = stmt.executeQuery("SELECT * form tablename");                    
                System.out.println("**** Created JDBC ResultSet object");
                while (rs.next()) {
                  val= rs.getString(1);
                 }
                System.out.println("**** Fetched all rows from JDBC ResultSet");
                rs.close();
                System.out.println("**** Closed JDBC ResultSet");
                stmt.close();
                System.out.println("**** Closed JDBC Statement");
                con.commit();
                System.out.println ( "**** Transaction committed" );
                con.close();                                                            
                System.out.println("**** Disconnected from data source");
                }
                catch(Exception ex)                                                      
                {
                  System.err.println("SQLException information");
                 }
       StackTrace:

     com.ibm.db2.jcc.am.DisconnectNonTransientConnectionException: [jcc][t4][2030][11211][4.25.13]A commumication error occurred during operations on the connection's undelying socker, socket input stream, or socket output stream. Error location: Reply.fill() - insufficient data (-l). Message: Insufficient data, ERRORCODE=4499, SQLSTATE=08001
        at com.ibm.db2.jcc.am.b6.a(b6.java:338)
        at com.ibm.db2.jcc.t4.a.a(a.java:572)
        at com.ibm.db2.jcc.t4.a.a(a.java:556)
        at com.ibm.db2.jcc.t4.a.a(a.java:551)
        at com.ibm.db2.jcc.t4.y.b(y.java:310)
        at com.ibm.db2.jcc.t4.y.b(y.java:337)
        at com.ibm.db2.jcc.t4.y.c(y.java:450)
        at com.ibm.db2.jcc.t4.y.v(y.java:1219)
        at com.ibm.db2.jcc.t4.z.a(z.java:53)
        at com.ibm.db2.jcc.t4.b.c(b.java:1410)
        at com.ibm.db2.jcc.t4.b.b(b.java:1282)
        at com.ibm.db2.jcc.t4.b.b(b.java:833)
        at com.ibm.db2.jcc.t4.b.a(b.java:804)
        at com.ibm.db2.jcc.t4.b.a(b.java:441)
        at com.ibm.db2.jcc.t4.b.a(b.java:414)
        at com.ibm.db2.jcc.t4.b.<init>(b.java:352)
        at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:233)
        at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:200)
        at com.ibm.db2.jcc.DV2Driver.connect(DB2Driver.java:471)
        at com.ibm.db2.jcc.DV2Driver.connect(DB2Driver.java:113)
        at java.sql.DriverManage.getConnection(DriverManager.java:664)
        at java.sql.DriverManage.getConnection(DriverManager.java:247)

Answer 1

首先，在缓存中，删除 System.err.println("SQLException information");并加 ex.printStackTrace() 以便了解具体问题。