其实我是在做一个注册界面,就是把用户名和密码写入mysql数据库。求各位大神给出代码啊。
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* @param args
*/
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver"); conn = DriverManager
.getConnection("jdbc:mysql://localhost/mydata?user=root&password=root");
stmt = conn.createStatement();
rs = stmt.executeQuery("select * from dept");
while (rs.next()) {
System.out.println(rs.getString("deptno"));
} } catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException ex) {
// handle any errors
System.out.println("SQLException: " + ex.getMessage());
System.out.println("SQLState: " + ex.getSQLState());
System.out.println("VendorError: " + ex.getErrorCode());
} finally {
try {
if(rs != null) {
rs.close();
rs = null;
}
if(stmt != null) {
stmt.close();
stmt = null;
}
if(conn != null) {
conn.close();
conn = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
} }}
throws ServletException, IOException {
// 获取前台数据
String u = request.getParameter("username");
String p = request.getParameter("password");
Connection conn = null;
PreparedStatement ps = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
String url = "jdbc:mysql://localhost/mydb?user=root&password=kingfish&useUnicode=true&characterEncoding=gbk";
conn = DriverManager.getConnection(url);
String sqlString = "insert into users (uname,upass) values (?,?)";
ps = conn.prepareStatement(sqlString);
ps.setString(1, u);
ps.setString(2, p);
if (ps.executeUpdate() > 0)
System.out.println("插入成功"); } catch (Exception e) {
// TODO: handle exception
System.out.println("插入失败");
e.printStackTrace();
} finally {
try {
if (ps != null) {
ps.close();
ps = null;
}
if (conn != null) {
conn.close();
conn = null;
}
} catch (Exception e2) {
e2.printStackTrace();
// TODO: handle exception
}
} }