1 <%@page import="java.sql.*"%>
2 <%@page import="java.sql.DriverManager"%>
3 <%@ page language="java" contentType="text/html; charset=UTF-8"
4 pageEncoding="UTF-8"%>
5 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
6 <html>
7 <head>
8 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
9 <title>学生信息</title>
10 </head>
11 <body>
12 学生信息列表
13 <br>
14 <%
15
16 try
17 {
18 // 1. 连接数据库
19 // 1)加载驱动
20 Class.forName("oracle.jdbc.driver.OracleDriver");
21
22 // 2)得到连接
23 Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL",
24 "test1","1234");
25 // 2. 读取数据库
26 Statement st = conn.createStatement();
27
28 ResultSet rs = st.executeQuery("select * from T_STUDENTS");
29
30 // 3. 输出结果集
31 if (rs != null)
32 {
33 while(rs.next())
34 {
35 out.print("SNO = " + rs.getString("SNO") + " ");
36 out.print("name = " + rs.getString("sname") + " ");
37 out.print("ssex = " + rs.getString("ssex") + " ");
38 out.print("sbirthday = " + rs.getString("sbirthday") + " ");
39 out.print("calss = " + rs.getString("class") + "<br>");
40
41 }
42 rs.close();
43 }
44
45 // 4. 释放资源
46 st.close();
47 conn.close();
48 }
49 catch (Exception e)
50
51 {
52
53 e.printStackTrace();
54 System.out.println("连接数据库失败");
55 }
56
57 %>
58
59 添加学生信息<br>
60 <form action="SaveStudent" method = "post">
61 学号：<input type = "text" name = "sno"><br>
62 名称：<input type = "text" name = "sname"><br>
63 性别：<input type = "text" name = "ssex"><br>
64 生日：<input type = "text" name = "sbirthday"><br>
65 班级：<input type = "text" name = "class"><br>
66
67 <input type = "submit" value = "保存">
68 </form>
69
70 </body>
71 </html>
1 package com.hanqi.web;
2 import java.sql.*;
3 import java.io.IOException;
4 import java.sql.Connection;
5 import java.sql.PreparedStatement;
6
7 import javax.servlet.ServletException;
8 import javax.servlet.http.HttpServlet;
9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11
12
13 public class SaveStudent extends HttpServlet {
14 private static final long serialVersionUID = 1L;
15
16 public SaveStudent() {
17 super();
18
19 }
20
21
22 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
23
24 // 处理保存数据的请求
25
26 // 1.接受参数
27 String sno = request.getParameter("sno");
28 String sname = request.getParameter("sname");
29 String ssex = request.getParameter("ssex");
30 String sbirthday = request.getParameter("sbirthday");
31 String sclass = request.getParameter("class");
32
33 // 2.验证参数
34 if (sno != null && sno.trim().length() != 0
35 && sname !=null && sname.trim().length() !=0)
36 {
37 try
38 {
39 // 3.保存参数
40 Class.forName("oracle.jdbc.driver.OracleDriver");
41
42 // 2)得到连接
43 Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORCL",
44 "test1","1234");
45 // 2. 读取数据库
46 //Statement st = conn.createStatement();
47 PreparedStatement pst = conn.prepareStatement(
48 "insert into t_students(sno,sname,ssex,class)"+
49 "values(?,?,?,?)");
50
51 pst.setString(1, sno);
52 pst.setString(2, sname);
53 pst.setString(3, ssex);
54 //pst.setDate(4, x);
55 pst.setString(4, sclass);
56
57 pst.executeUpdate();
58
59 pst.close();
60 conn.close();
61
62
63 // 4.跳转页面
64 response.getWriter().print("保存成功");;
65 response.setHeader("refresh", "3;URL=index.jsp");
66
67 }
68 catch(Exception e)
69 {
70 e.printStackTrace();
71 response.getWriter().print("保存失败");;
72 response.setHeader("refresh", "3;URL=index.jsp");
73 }
74
75
76 }
77 else
78 {
79 response.getWriter().print("请正确提交数据");;
80 response.setHeader("refresh", "3;URL=index.jsp");
81 }
82
83
84 }
85
86
87 protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
88
89 doGet(request, response);
90 }
91
92 }
1 package com.hanqi.web;
2
3 import java.io.IOException;
4 import javax.servlet.Filter;
5 import javax.servlet.FilterChain;
6 import javax.servlet.FilterConfig;
7 import javax.servlet.ServletException;
8 import javax.servlet.ServletRequest;
9 import javax.servlet.ServletResponse;
10
11
12 public class MyFilter implements Filter {
13
14 public MyFilter() {
15
16 }
17
18
19 public void destroy() {
20
21 }
22
23
24 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
25
26 //添加过滤
27 request.setCharacterEncoding("UTF-8");
28
29 response.setContentType("text/html");
30
31 response.setCharacterEncoding("UTF-8");
32
33
34
35
36 chain.doFilter(request, response);
37 }
38
39
40 public void init(FilterConfig fConfig) throws ServletException {
41
42 }
43
44 }
时间： 2024-08-10 02:09:34