加急记下安卓可以用的MySQL数据库连接

  Button button1 = findViewById(R.id.denglu);
        button1.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View  v) {
//                int acc=Integer.parseInt(tex.getText().toString());
//                acc=acc+1;
//                tex.setText(""+acc);


                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            Class.forName("com.mysql.jdbc.Driver");
                            java.sql.Connection cn= DriverManager.getConnection("jdbc:mysql://cdb-7iyyamp1.gz.tencentcdb.com:10024/text?useSSL=false& useUnicode=true & characterEnunicode=UTF8","","");
                            System.out.println("数据库连接成功");
                            String sql="select*from user";
                            Statement st=(Statement)cn.createStatement();
                            ResultSet rs=st.executeQuery(sql);

                            cn.close();
                            st.close();
                            rs.close();
                        } catch (ClassNotFoundException e) {
                            e.printStackTrace();
                        } catch (SQLException e) {
                            e.printStackTrace();
                            Toast.makeText(MainActivity.this,"数据库连接失败",Toast.LENGTH_SHORT).show();
                        }
                    }
                }).start();