JDBC ----- SQL 插入记录

package demo;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
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;

/**
 * Servlet implementation class AddCustomer
 */
@WebServlet("/addCustomer.jsp")
public class AddCustomer extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public AddCustomer() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		//增加
		//获取浏览器输入的参数
		String CustomerID =request.getParameter("CustomerID");
		String CustomerName = request.getParameter("CustomerName");
		String ContactName= request.getParameter("ContactName");
		String Address = request.getParameter("Address");
		String City = request.getParameter("City");
		String PostalCode = request.getParameter("PostalCode");
		String Country=request.getParameter("Country");

		//设置数据库连接参数
		String url="jdbc:mysql://localhost:3306/库名?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT";
		String user = "账号";
		String password="密码";

		//加载数据库驱动
		try {
			Class.forName("com.mysql.jdbc.Driver");
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
		try(Connection connection =DriverManager.getConnection(url, user, password)){//连接数据库
			//设置插入sql语句,Customers为表名
			 String sql = "INSERT INTO Customers(CustomerName,ContactName,Address,City,PostalCode,Country) VALUES (?,?,?,?,?,?);";
	            PreparedStatement statement = connection.prepareStatement(sql,Statement.RETURN_GENERATED_KEYS);//预处理sql语句

					//以下语句对应VALUES语句里的值
			        statement.setString(1, CustomerName);
			        statement.setString(2, ContactName);
			        statement.setString(3, Address);
			        statement.setString(4, City);
			        statement.setString(5, PostalCode);
			        statement.setString(6, Country);

			        int value = statement.executeUpdate();

			        statement.close();// 关闭statement，释资源

		}catch(SQLException e) {
			e.printStackTrace();
		}
		request.getRequestDispatcher("queryalldata.jsp").forward(request, response);//跳转到查询所有得服务程序
	}

}