使用Mysql检索的问题

Question

你写太乱了
      Connection con=null;
      Statement st=null;
      ResultSet rs=null;
      try{
          Class.forName("org.gjt.mm.mysql.Driver");
          con=DriverManager.getConnection("jdbc:mysql://10.10.1.129:3306/fishgame","root","123456");
           st=con.createStatement();
           rs=st.executeQuery(sql语句);
          }catch(Exception ex){
              System.out.println(ex.getMessage());
       }
      return con;

Answer 1

没有 return con;      Connection con=null;
      Statement st=null;
      ResultSet rs=null;
      try{
          Class.forName("org.gjt.mm.mysql.Driver");
          con=DriverManager.getConnection("jdbc:mysql://10.10.1.129:3306/fishgame","root","123456");
           st=con.createStatement();
           rs=st.executeQuery(sql语句);
          }catch(Exception ex){
              System.out.println(ex.getMessage());
       }

Answer 2

上面的代码我已经放到“public.jsp”中了。