UC知道java datatablejava DataExpress 中的Database问题
来源：百度知道 编辑：UC知道 时间：2024/06/23 06:09:04
java GUI：
如下代码
private void jbInit() throws Exception {
contentPane = (JPanel) getContentPane();
contentPane.setLayout(xYLayout1);
setSize(new Dimension(400, 300));
setTitle("Welcome");
database1.setConnection(new ConnectionDescriptor(
"jdbc:mysql://localhost:3306/test?characterEncoding=utf-8",
"root", "pass", false, "com.mysql.jdbc.Driver"));
database1.setDatabaseName("");
jButton1.setText("jButton1");
jButton1.addActionListener(new LoginFream_jButton1_actionAdapter(this));
jLabel1.setText("jLabel1");
contentPane.add(jLabel1, new XYConstraints(57, 180, 167, 26));
contentPane.add(jButton1, new XYConstraints(147, 124, -1, -1));
}
public void jButton1_actionPerformed(ActionEvent e)
如下代码
private void jbInit() throws Exception {
contentPane = (JPanel) getContentPane();
contentPane.setLayout(xYLayout1);
setSize(new Dimension(400, 300));
setTitle("Welcome");
database1.setConnection(new ConnectionDescriptor(
"jdbc:mysql://localhost:3306/test?characterEncoding=utf-8",
"root", "pass", false, "com.mysql.jdbc.Driver"));
database1.setDatabaseName("");
jButton1.setText("jButton1");
jButton1.addActionListener(new LoginFream_jButton1_actionAdapter(this));
jLabel1.setText("jLabel1");
contentPane.add(jLabel1, new XYConstraints(57, 180, 167, 26));
contentPane.add(jButton1, new XYConstraints(147, 124, -1, -1));
}
public void jButton1_actionPerformed(ActionEvent e)
代码不全难以分析.
this.jLabel1.setText("ok"+ i);
这句有问题吧？
你的i是int型，可以这样＋？
补充：那你测试一下是不是你连接数据库有问题？
你直接在你的database1里面，测试一下数据源这些，看问题是否出在里面
连接出错的话就是数据库连接不上了...
database1 是从哪里来的?建议把这个类贴出来。
jBulider ...
this.jLabel1.setText("ok"+ i);