标签：ps java name 管理系统 time import public 图书
BaseDao.java
package com.gd.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class BaseDao {
//获取连接
protected Connection getConnection(){
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
// 2.建立连接
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/mysql?useUnicode=true&characterEncoding=utf8", "root", "123456");
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
//关闭连接
protected void closeAll(Connection con,PreparedStatement ps,ResultSet rs){
try {
if(rs != null)
rs.close();
if(ps != null)
ps.close();
if(con != null)
con.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
BookManageDao.java
package com.gd.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.gd.entity.BookManage;
public class BookManageDao extends BaseDao{
public List<BookManage> selectall() {
ArrayList<BookManage> list = new ArrayList<BookManage>();
Connection conn = null;
PreparedStatement ps =null;
ResultSet rs = null;
try {
conn = getConnection();
String sql = "select * from BookManage";
ps = conn.prepareStatement(sql);
rs = ps.executeQuery();
while(rs.next()){
list.add(new BookManage(rs.getInt("b_id"),rs.getString("b_name"), rs.getString("b_author"), rs.getDate("b_time"),rs.getInt("b_type")));
}
return list;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
closeAll(conn, ps, rs);
}
return list;
}
public int insert(BookManage b){
Connection conn=getConnection();
String sql="insert into BookManage (b_name,b_author,b_time,b_type)values(?,?,?,?)";
PreparedStatement ps=null;
int i=0;
try {
ps=conn.prepareStatement(sql);
ps.setString(1,b.getB_name());
ps.setString(2, b.getB_author());
ps.setDate(3, b.getB_time());
ps.setInt(4, b.getB_type());
i=ps.executeUpdate();//返回受影响的行数
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
closeAll(conn, ps, null);
}
return i;
}
public int delete(int b_id){
Connection conn=getConnection();
String sql="delete from BookManage where b_id = ?";
PreparedStatement ps=null;
int i=0;
try {
ps=conn.prepareStatement(sql);
ps.setInt(1, b_id);
i=ps.executeUpdate();//返回受影响的行数
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
closeAll(conn, ps, null);
}
return i;
}
}
BookManage.java
package com.gd.entity;
import java.sql.Date;
public class BookManage {
private int b_id;
private String b_name;
private String b_author;
private Date b_time;
private int b_type;
public BookManage() {
super();
}
public BookManage(int b_id,String b_name, String b_author, Date b_time,
int b_type) {
super();
this.b_id=b_id;
this.b_name = b_name;
this.b_author = b_author;
this.b_time = b_time;
this.b_type = b_type;
}
public int getB_id() {
return b_id;
}
public void setB_id(int b_id) {
this.b_id = b_id;
}
public String getB_name() {
return b_name;
}
public void setB_name(String b_name) {
this.b_name = b_name;
}
public String getB_author() {
return b_author;
}
public void setB_author(String b_author) {
this.b_author = b_author;
}
public Date getB_time() {
return b_time;
}
public void setB_time(Date b_time) {
this.b_time = b_time;
}
public int getB_type() {
return b_type;
}
public void setB_type(int b_type) {
this.b_type = b_type;
}
}
AddServlet.java
package com.gd.servlet;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
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 com.gd.dao.BookManageDao;
import com.gd.entity.BookManage;
/**
* Servlet implementation class AddServlet
*/
@WebServlet("/AddServlet")
public class AddServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public AddServlet() {
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
int b_type = Integer.parseInt(request.getParameter("b_type"));
String b_name = request.getParameter("b_name");
String b_author= request.getParameter("b_author");
String b_time = request.getParameter("b_time");
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date time = null;;
try {
time = sdf.parse(b_time);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
BookManage b = new BookManage();
b.setB_type(b_type);
b.setB_author(b_author);
b.setB_name(b_name);
b.setB_time(new java.sql.Date(time.getTime()));
BookManageDao bd = new BookManageDao();
bd.insert(b);
response.sendRedirect("index.jsp");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
SeleteServlet.java
package com.gd.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.annotation.WebServlet;
import com.gd.dao.BookManageDao;
/**
* Servlet implementation class DeleteServlet
*/
@WebServlet("/DeleteServlet")
public class DeleteServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public DeleteServlet() {
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
int b_id = Integer.parseInt(request.getParameter("b_id"));
BookManageDao bd = new BookManageDao();
bd.delete(b_id);
response.sendRedirect("index.jsp");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
index.jsp
<%@page import="com.gd.entity.BookManage"%>
<%@page import="com.gd.dao.BookManageDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta charset="UTF-8">
<title>图书管理系统</title>
<link rel="stylesheet" type="text/css" href="index.css"/>
</head>
<body>
<h1 >图书信息</h1>
<table cellspacing="0" border="1px" width="549" height="66" >
<tr>
<th>图书名称</th>
<th>图书作者</th>
<th>购买时间</th>
<th>图书分类</th>
<th>操作</th>
</tr>
<%
BookManageDao bd = new BookManageDao();
List<BookManage> list = bd.selectall();
for(int i = 0 ;i <list.size();i++){
out.print("<tr>");
out.print("<td>"+list.get(i).getB_name()+"</td>");
out.print("<td>"+list.get(i).getB_author()+"</td>");
out.print("<td>"+list.get(i).getB_time()+"</td>");
out.print("<td>"+list.get(i).getB_type()+"</td>");
%>
<td><a href="delete.jsp?b_id=<%=list.get(i).getB_id()%>">删除</a></td>
<%
out.print("</tr>");
}
%>
</table>
<h2><a href="Add.jsp">新增图书信息</a></h2>
</body>
</html>
Add.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<form action="Add.jsp">
<h2>新增图书信息</h2>
图书名称：<input type="text" name = "b_name">
</br>
图书作者：<input type="text" name = "b_author">
</br>
购买日期<input type="text" name = "b_time">yyy-mmm-ddd格式
</br>
图书类别：<select name="b_type">
<option value="0">请选择所属分类</option>
<option value="1">计算机/软件</option>
<option value="2">小说/文摘</option>
<option value="3">杂项</option>
</select>
</br>
<input type="submit" value="增加图书">
</form>
</body>
</html>
标签：ps,java,name,管理系统,time,import,public,图书 来源： https://www.cnblogs.com/jisuanji-04/p/14768178.html
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