私はjspフォームを持っています:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<link rel="stylesheet" href="./Styles/Site.css" type="text/css" />
<title>Create new customer</title>
</head>
<body>
<fieldset>
<legend>Create new customer</legend>
<form action="CreateCustomerServlet" method="GET">
// text of form ...
<input type="submit" value="Create customer" />
</form>
</fieldset>
</body>
</html>
に行くCreateCustomerServlet
-
package control;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.mysql.jdbc.jdbc2.optional.MysqlConnectionPoolDataSource;
import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;
import Model.Customer;
import Model.Gender;
/**
* Servlet implementation class CreateCustomerServlet
*/
@WebServlet("/CreateCustomerServlet")
public class CreateCustomerServlet extends HttpServlet {
// members ..
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public CreateCustomerServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// get the parameters from the jsp form ..
saveInDB() ;
}
private void saveInDB() throws ClassNotFoundException, SQLException {
Connection connection = null;
try {
String strServer = "jdbc:mysql://127.0.0.1:3306/testdb";
MysqlDataSource ds = new MysqlConnectionPoolDataSource();
ds.setServerName(strServer);
ds.setDatabaseName("testdb");
connection = ds.getConnection("root", "");
Statement statement = connection.createStatement();
statement.execute(" /** sql INSERT statement **/");
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
行に到達すると-connection = ds.getConnection("root", "");
例外をスローします-com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Cannot load connection class because of underlying exception: 'java.lang.NumberFormatException: For input string: "mysql:"'.
私はMySqlで使用します。スナップショットのようにユーザーhttp://localhost/phpmyadmin/
がいるDBがあります-testdb
そして、両方のユーザーがスナップショットとして空のパスワードを持っています-