网站页面设计说明怎么写,襄阳官网建站公司,品牌建设成绩,如何架设个人网站JDBC#xff1a;Java Data Base Connectivity java数据库连接 1.组成JDBC的两个包#xff1a;主要是接口 java.sql javax.sql 2.相应JDBC的数据库实现 在tomcat的目录下面添加mysql-connector-java-5.0.8-bin.jar这个数据库驱动包 package com.tsh.web;import java.io.IOExce…JDBCJava Data Base Connectivity java数据库连接 1.组成JDBC的两个包主要是接口 java.sql javax.sql 2.相应JDBC的数据库实现 在tomcat的目录下面添加mysql-connector-java-5.0.8-bin.jar这个数据库驱动包 package com.tsh.web;import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/***/
public class DbServlet extends HttpServlet {private static final long serialVersionUID 1L;/***/public DbServlet() {super();// TODO Auto-generated constructor stub}/***/protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {try {// 注册数据库驱动//DriverManager.registerDriver(new Driver());//使用反射的方式Class.forName(com.mysql.jdbc.Driver);//获取数据库连接导包的时候注意要导java.sql下的面向接口编程Connection connDriverManager.getConnection(jdbc:mysql://localhost:3306/java,root,root);//获取传输器对象Statement statementconn.createStatement();//获取结果集对象ResultSet resultSetstatement.executeQuery(select * from user);//遍历while(resultSet.next()){String usernameresultSet.getString(username);response.getWriter().write(username);}} catch (Exception e) {e.printStackTrace();}}/***/protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException {}}
