先在workbench中新建一个schema 比如叫 javatemp
再右键shcema里面的table新建一个叫new_table的table
然后设置一下table里面有什么 如图
右键new_table 显示前100行 可以先往里面手动添加一些数据
数据库的就到这
然后打开J2EE 新建Dynamic web project
先导入连接mysql的驱动jar包 直接将jar包拖到WEB-INF下的lib目录
在webContent里新建读取数据库jsp文件 代码如下
<%@page import="java.sql.*"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>JSP读取数据库</title>
</head>
<body>
<table border="1" align="center">
<tr>
<th>id</th>
<th>name</th>
<th>author</th>
<th>publishing</th>
<th>price</th>
<th>data</th>
</tr>
<%
String driverClass="com.mysql.jdbc.Driver";
String url = "jdbc:mysql://127.0.0.1/javatemp";
String user = "root";
String password = "1234";
Connection conn;
PreparedStatement pst = null;
try{
Class.forName(driverClass).newInstance();
conn = DriverManager.getConnection(url,user,password);
String sql = "select * from new_table";
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(sql);
while(rs.next()){
%>
<tr>
<td><%=rs.getString("id") %></td>
<td><%=rs.getString("bookname") %></td>
<td><%=rs.getString("publishing") %></td>
<td><%=rs.getString("writer") %></td>
<td><%=rs.getString("price") %></td>
<td><%=rs.getString("date") %></td>
</tr>
<%
}
}catch(Exception e){
e.printStackTrace();
}
%>
</table>
</body>
</html>上面代码中 user 和 password 是你自己数据库的用户名和密码
127.0.0.1也是看你自己数据库的地址
我的两个数据库连接 localhost 和127.0.0.1都一样
运行到服务器上会显示如图结果
以上就是查询mySQL的部分
接下来插入新数据
新建InsertDate.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<form action="./insertDate" method="post">
id: <input type="text" name="id" /><br/>
bookname: <input type="text" name="bookname" /><br/>
publishing:<input type="text" name="publishing" /><br/>
writer: <input type="text" name="writer" /><br/>
price: <input type="text" name="price" /><br/>
date: <input type="text" name="date" /><br/>
<input type="submit" value="submit"/>
</form>
</body>
</html>其中form的action insertDate是一个servlet 负责插入数据库数据
新建这个servlet 
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.*;
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 insertDate
*/
@WebServlet("/insertDate")
public class insertDate extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public insertDate() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
PrintWriter out = response.getWriter();
String id = request.getParameter("id");
String bookname = request.getParameter("bookname");
String publishing = request.getParameter("publishing");
String writer = request.getParameter("writer");
String price = request.getParameter("price");
String date=request.getParameter("date");
String driverClass="com.mysql.jdbc.Driver";
String url = "jdbc:mysql://127.0.0.1/javatemp";
String user = "root";
String password = "1234";
Connection conn;
try {
int i=0;
Class.forName(driverClass).newInstance();
conn = DriverManager.getConnection(url,user,password);
String sql = "insert into new_table (id,bookname,publishing,writer,price,date) "
+ "values(?,?,?,?,?,?)";
Connection conn1 = DriverManager.getConnection(url, user, password);
PreparedStatement pstmt;
pstmt = (PreparedStatement) conn1.prepareStatement(sql);
pstmt.setString(1, id);
pstmt.setString(2, bookname);
pstmt.setString(3, publishing);
pstmt.setString(4, writer);
pstmt.setString(5, price);
pstmt.setString(6, date);
i = pstmt.executeUpdate();
conn1.close();
pstmt.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
运行之后 插入数据注意数据类型 id不能重复 date是DATE类型
格式为 年-月-日
时间： 2024-10-08 11:13:24