JDBC（Java Data Base Connectivity）。
创建图书（book）类
public class Book{
private int bid;
private String name;
private double price;
private int bookCount;
private String author;
public int getBid() {
return bid;
}
public void setBid(int bid) {
this.bid = bid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
public int getBookCount() {
return bookCount;
}
public void setBookCount(int bookCount) {
this.bookCount = bookCount;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
}
创建AddBook.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>添加书籍</title>
</head>
<body>
<form action="#" method="post" onsubmit="return check(this);">
<table align="center" width="450">
<tr>
<td align="center" colspan="2">
<h2>添加图书信息</h2>
</td>
</tr>
<tr>
<td align="right">图书名称：</td>
<td><input type="text" name="name" /></td>
</tr>
<tr>
<td align="right">价 格：</td>
<td><input type="text" name="price" /></td>
</tr>
<tr>
<td align="right">数 量：</td>
<td><input type="text" name="bookCount"/></td>
</tr>
<tr>
<td align="right">作 者：</td>
<td><input type="text" name="author"/></td>
</tr>
<tr>
<td align="center" colspan="2">
<input type="submit" value="添加"/>
</td>
</tr>
</table>
</form>
</body>
</html>
通过jsp文件实现添加操作：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" import="com.entity.Book"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>添加页</title>
</head>
<body>
<%request.setCharacterEncoding("UTF-8"); %>
<jsp:useBean id="book" class="com.entity.Book"/>
<jsp:setProperty property="*" name="book"/>
<%
try{
Class.forName("com.mysql.jdbc.Driver");
String url="jdbc:mysql://localhost:3306/#";
String username="root";
String password="1234";
Connection conn=DriverManager.getConnection(url,username,password);
String sql="insert into book(name,price,bookCount,author)values(?,?,?,?)";
PreparedStatement ps=conn.prepareStatement(sql);
ps.setString(1,book.getName());
ps.setDouble(2,book.getPrice());
ps.setInt(3,book.getBookCount());
ps.setString(4,book.getAuthor());
int row=ps.executeUpdate();
if(row>0){
out.print("成功添加了"+row+"条数据!");
}
ps.close();
conn.close();
}catch(Exception e){
out.print("图书信息添加失败！");
e.printStackTrace();
}
%>
</body>
</html>
通过Servlet实现添加操作：
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn= DriverManager.getConnection("jdbc:mysql://localhost:3306/#", "root", "1234");
String name=request.getParameter("name");
String price=request.getParameter("price");
String bookCount=request.getParameter("bookCount");
String author=request.getParameter("author");
String sql="insert into book(name,price,bookCount,author)values(?,?,?,?)";
PreparedStatement ps=conn.prepareStatement(sql);
ps.setString(1,name);
ps.setString(2,price);
ps.setString(3,bookCount);
ps.setString(4,author);
int row=ps.executeUpdate();
if(row>0) {
response.getWriter().print("添加成功！");
}
ps.close();
conn.close();
} catch (ClassNotFoundException e) {
response.getWriter().print("添加失败！");
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
本文地址：https://blog.csdn.net/qq_45893285/article/details/109922521
