메뉴 건너뛰기

조회 수 26163 추천 수 0 댓글 0
?

단축키

Prev이전 문서

Next다음 문서

크게 작게 위로 아래로 댓글로 가기 인쇄
?

단축키

Prev이전 문서

Next다음 문서

크게 작게 위로 아래로 댓글로 가기 인쇄

리스트에서 도서등록 버튼 누르면 2 insert.jsp 페이지로 이동



1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    
   <%@page import="book.*"%> 
   <%@page import="java.util.ArrayList"%>
<!DOCTYPE  >
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
 
<h2> 도서목록</h2>
 
<input type="button" value="도서등록"
    onclick="location.href='insert.jsp' "
>
 
 
<table border="1"
 
    <tr>
                <th>번호</th>    
                <th>도서명</th>
                <th>저자</th>
                <th>가격</th>
                <th>수량</th>
    
    </tr>
 
 
<%
        BookDAO dao=new BookDAO();
        //dao.dbConn();   db 연결 확인 작업
        
         ArrayList<bookDTO>list=dao.bookList();
         for(bookDTO dto:list){
                     
%>
 
        <tr>
                <td><%=dto.getId() %></td>
                <td><%=dto.getTitle() %></td>
                <td><%=dto.getAuthor() %></td>
                <td><%=dto.getPrice() %></td>
                <td><%=dto.getQty() %></td>
        
        </tr>
 
 
 
<%
 
         } //for 문의 끝
%>
 </table>
 
</body>
</html>
cs





2. insert.jsp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE  >
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
 
<script src="http://code.jquery.com/jquery-3.1.0.js">
    
</script>
 
<script>
    $(document).ready(function() {
 
        $("#btnAdd").click(function() { //버튼 클릭이벤트
 
            var title = $("#title").val(); //태그입력값
            var author = $("#author").val();
            var price = $("#price").val();
            var qty = $("#qty").val();
 
            if (title == "") { //빈값이면
 
                alert("도서명을 입력하세요")
                $("#title").focus(); //입력포커스 이동
                return//함수 종료
 
            }
 
            if (author == "") {
 
                alert("저자명을 입력하세요")
                $("#author").focus();
                return;
 
            }
 
            if (price == 0) {
 
                alert("가격을 입력하세요")
                $("#price").focus();
                return;
 
            }
 
            if (qty == 0) {
 
                alert("수량을 입력하세요")
                $("#qty").focus();
                return;
 
            }
 
            /* 폼에 입력한 데이터를 서버로 전송 */
            document.form1.submit();
        });
 
    });
</script>
 
</head>
<body>
    <!-- request.getContextPath() = 컨택스트 페스를 리턴함 -->
    a
    <!-- ction ="/컨텍스트/가상디렉토리 / 서블릿 url" -->
    <!-- id 는 jsp에서 쓸 것이고 name은 서블릿에서 사용할 것이다. -->
    <h2>도서 정보 등록</h2>
 
    <form name="form1" method="post"
        action="<%=request.getContextPath()%>/book_servlet/insert.do">
 
        <table border="1">
            <tr>
                <td>도서명</td>
                <td><input name="title" id="title"></td>
            </tr>
 
            <tr>
                <td>저자</td>
                <td><input type="text" name="author" id="author"></td>
            </tr>
 
 
            <tr>
                <td>가격</td>
                <td><input type="number" name="price" id="price" required></td>
            </tr>
 
            <tr>
                <td>수량</td>
                <td><input type="number" name="qty" id="qty" required></td>
            </tr>
 
 
            <tr>
                <td colspan="2" align="center"><input type="button" id="btnAdd"
                    value="확인"> <input type="reset" value="취소"></td>
            </tr>
 
 
        </table>
 
    </form>
 
</body>
</html>
cs




3. bookController (서블릿)



1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
package book;
 
import java.io.IOException;
 
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
//url patter 지정 
//
 
@WebServlet("/book_servlet/*")
public class BookController extends HttpServlet {
    private static final long serialVersionUID = 1L;
 
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
 
        System.out.println("서블릿 호출");
 
        // 한글처리
        request.setCharacterEncoding("utf-8");
 
        // 컨텍스트 페스 경로가져오기
        String context = request.getContextPath();
        // DAO생성
        BookDAO dao = new BookDAO();
        // 폼에서 입력 받은 데이터를 DTO에 저장
 
        String title = request.getParameter("title");
        String author = request.getParameter("author");
        int price = Integer.parseInt(request.getParameter("price"));
        int qty = Integer.parseInt(request.getParameter("qty"));
 
        bookDTO dto = new bookDTO(title, author, price, qty);
 
        // 테이블에 저장
        dao.bookInsert(dto);
 
        // 페이지 이동
        response.sendRedirect(context + "/book/book_list.jsp");
 
    }
 
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
 
        doGet(request, response);
    }
 
}
 
cs






4. dao 


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
package book;
 
// jdbc import
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
 
public class BookDAO {
 
    // db접속
    public Connection dbConn() {
 
        Connection conn = null// db접속 객체
 
        try {
            // mysql jdbc driver 로딩
            Class.forName("com.mysql.jdbc.Driver");
 
            // db연결 문자열 but 이방법은 보안에 취약하다. ..
            String url = "jdbc:mysql://localhost:3306/java";
            String id = "java"// mysql 접속아이디
            String pwd = "java1234"// mysql 접속 비번
 
            // db 접속
 
            conn = DriverManager.getConnection(url, id, pwd);
            System.out.println("db접속 성공");
        } catch (Exception e) {
            // db관련작업은 반드시 익셉션 처리
            System.out.println("db접속 실패");
            e.printStackTrace();
        }
        return conn;
 
    }
 
    // 북리스트
    public ArrayList<bookDTO> bookList() {
 
        ArrayList<bookDTO> list = new ArrayList<bookDTO>();
        Connection conn = null// DB접속 객체
        PreparedStatement pstmt = null// SQL실행객체
        ResultSet rs = null// 결과셋 처리 객체
 
        try {
            conn = dbConn(); // db연결 키
            String sql = "select * from book_table";
            pstmt = conn.prepareStatement(sql); // sql을 실행시키는 객체 만들어짐
            rs = pstmt.executeQuery(); // 실행 후 결과 값이 rs에 넘어옴
 
            while (rs.next()) { // 결과셋.next(); 다음 레코드가 있으면 true
 
                bookDTO dto = new bookDTO();
                dto.setId(rs.getInt("id"));
                dto.setTitle(rs.getString("title"));
                dto.setAuthor(rs.getString("author"));
                dto.setPrice(rs.getInt("price"));
                dto.setQty(rs.getInt("qty"));
 
                // ArrayList에 추가
                list.add(dto);
            }
 
        } catch (Exception e) {
            e.printStackTrace();
        } finally { // 오픈한 역순으로 닫기작업 실행
 
            // resultset= > statement=> connection
 
            try {
                if (rs != null) {
                    rs.close();
                }
 
            } catch (Exception e2) {
                e2.printStackTrace();
            }
 
            try {
                if (pstmt != null) {
                    pstmt.close();
                }
 
            } catch (Exception e2) {
                e2.printStackTrace();
            }
 
            try {
                if (conn != null) {
                    conn.close();
                }
 
            } catch (Exception e2) {
                e2.printStackTrace();
            }
 
        }
        return list;
    }
    //삽입
    public void bookInsert(bookDTO dto) {
        
        Connection conn = null// DB접속 객체
        PreparedStatement pstmt = null// SQL실행객체
        
        try{
            
            conn=dbConn();
            
            String sql="insert into book_table(title, author, price, qty)"+" values(?,?,?,?)";
            
            
            //sql 실행객체 생성
            pstmt=conn.prepareStatement(sql);
            
            //? 에 입력될 값 매핑
            pstmt.setString(1, dto.getTitle());
            pstmt.setString(2, dto.getAuthor());
            pstmt.setInt(3, dto.getPrice());
            pstmt.setInt(4, dto.getQty());
            
            //executeQuery() select 명령어
            //executeUpdate select 이외 명령어
            pstmt.executeUpdate();
            
            
        }catch(Exception e){
            
            e.printStackTrace();
            
        }finally{
            //리소스 정리작업
            try {
                if (pstmt != null) {
                    pstmt.close();
                }
 
            } catch (Exception e2) {
                e2.printStackTrace();
            }
 
            try {
                if (conn != null) {
                    conn.close();
                }
 
            } catch (Exception e2) {
                e2.printStackTrace();
            }
 
            
        }
        
    }
 
}
 
cs



  1. 페이지 화면 이동방식

  2. No Image 09Jan
    by 조쉬
    2019/01/09 Views 26163 

    MYSQL JSP insert 폼에서 servlet으로 값넘기기

  3. No Image 09Jan
    by
    2019/01/09 Views 4436 

    MYSQL JSP 연동 &리스트 뽑아오기

  4. jsp 웹 멀티업로드 프로그램

  5. No Image 28Mar
    by
    2018/03/28 Views 5933 

    CentOS(64Bit)에 yum을 이용하여 Apache+Tomcat+JSP 연동

  6. No Image 12Sep
    by
    2017/09/12 Views 5502 

    JSP 게시판 만들기 - 완료 (소스파일, 의견)

  7. JSP 게시판 만들기 - 구현 (마무리, 테스트)

  8. JSP 게시판 만들기 - 구현 (파라미터, 요청/응답)

  9. JSP 게시판 만들기 - 구현 (Method, Query 기초)

  10. JSP 게시판 만들기 - 구현 (MySQL과의 연동)

  11. JSP 게시판 만들기 - 구현 (HTML 코딩)

  12. JSP 게시판 만들기 - 구현 (디렉토리, 파일, 테이블 생성)

  13. JSP 게시판 만들기 - 구현 (웹 프로젝트와 톰켓 연동, 샘플 페이지 작성)

  14. No Image 12Sep
    by
    2017/09/12 Views 4956 

    JSP 게시판 만들기 - 네이밍, 데이터베이스 설계

  15. JSP (Java Server Page), Servlet에 대해

  16. JSP 게시판 만들기 - 시스템 아키텍처

  17. No Image 12Sep
    by
    2017/09/12 Views 6596 

    JSP 게시판 만들기 - 개발표준, 화면설계

  18. No Image 12Sep
    by
    2017/09/12 Views 13392 

    JSP 게시판 만들기 - 구현 (이클립스 웹 프로젝트 생성)

  19. No Image 12Sep
    by
    2017/09/12 Views 4875 

    JSP 게시판 만들기 - 구현 (이클립스 웹 프로젝트 생성)

  20. request, response

Board Pagination Prev 1 2 3 4 Next
/ 4

하단 정보를 입력할 수 있습니다

© k2s0o1d4e0s2i1g5n. All Rights Reserved