티스토리 뷰

면접준비/KOSMO 허쌤 숙제

학습정리-11-17

praybe 2021. 11. 18. 10:10

1. 아래를 프로그래밍 하시오.
-JSP 프로젝트 생성
-/hello 로 치고 들어오면 Hello 를 출력하는 HelloWorld.java 서블릿 파일 작성

 

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
package Nov17;
 
import java.io.IOException;
import java.io.PrintWriter;
 
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 HelloWorld
 */
@WebServlet("/hello")
public class HelloWorld extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public HelloWorld() {
        super();
        // TODO Auto-generated constructor stub
    }
 
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // http://localhost:8282/JSP/hello
    
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
        
        writer.println("<html>");
        writer.println("<head>");
        writer.println("</head>");
        writer.println("<body>");
        writer.println("<h1>Hello</h1>");
        writer.println("</body>");
        writer.println("</html>");
        
        writer.close();
        
    
    
    }
 
    /**
     * @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);
    }
 
}
 
 cs

 

 


-/lotto 로 치고 들어오면 로또번호 6개를  출력하는 LottoNum.java 서블릿 파일 작성

 

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
package Nov17;
 
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
 
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 LottoNum
 */
@WebServlet("/lotto")
public class LottoNum extends HttpServlet {
    private static final long serialVersionUID = 1L;
 
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LottoNum() {
        super();
        // TODO Auto-generated constructor stub
    }
 
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
     *      response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // http://localhost:8282/JSP/lotto
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
 
        writer.println("<html>");
        writer.println("<head>");
        writer.println("</head>");
        writer.println("<body>");
 
        int[] lotto = new int[6];
        writer.println("Random Numbers: ");
 
        for (int i = 0; i < lotto.length; i++) {
            lotto[i] = (int) (Math.random() * 45 + 1);
            for (int j = 0; j < i; j++) {
                if (lotto[i] == lotto[j]) {
                    i--;
                    break;
                }
            }
        }
        writer.println(Arrays.toString(lotto));
 
        writer.println("</body>");
        writer.println("</html>");
 
        writer.close();
 
    }
 
    /**
     * @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);
 
    }
 
}
 
 cs

 


-/gugu3 으로 치고 들어오면 구구단 3단을 출력하는 GuGu3Dan.java 서블릿 파일 작성

 

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
package Nov17;
 
import java.io.IOException;
import java.io.PrintWriter;
 
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 GuGu3Dan
 */
@WebServlet("/gugu3")
public class GuGu3Dan extends HttpServlet {
    private static final long serialVersionUID = 1L;
 
    /**
     * @see HttpServlet#HttpServlet()
     */
    public GuGu3Dan() {
        super();
        // TODO Auto-generated constructor stub
    }
 
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
     *      response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // http://localhost:8282/JSP/gugu3
 
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
 
        writer.println("<html>");
        writer.println("<head>");
        writer.println("</head>");
        writer.println("<body>");
 
        int n = 3;
        
        for (int i = 1; i < 10; i++) {
            writer.println(n + " x " + i + " = " + n * i + "</br>");
        }
        
        writer.println("</body>");
        writer.println("</html>");
 
        writer.close();
 
    }
 
    /**
     * @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);
    }
 
}
 
 cs

 

 


-/gugudan 으로 치고 들어오면 구구단(1단~9단)을 출력하는 GuGuDan.java 서블릿 파일 작성

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
package Nov17;
 
import java.io.IOException;
import java.io.PrintWriter;
 
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 GuGuDan
 */
@WebServlet("/gugudan")
public class GuGuDan extends HttpServlet {
    private static final long serialVersionUID = 1L;
 
    /**
     * @see HttpServlet#HttpServlet()
     */
    public GuGuDan() {
        super();
        // TODO Auto-generated constructor stub
    }
 
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
     *      response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // http://localhost:8282/JSP/gugudan
 
        response.setContentType("text/html");
        PrintWriter writer = response.getWriter();
 
        writer.println("<html>");
        writer.println("<head>");
        writer.println("</head>");
        writer.println("<body>");
 
        for (int i = 1; i < 10; i++) {
            for (int j = 1; j < 10; j++) {
                writer.println(i + " x " + j + " = " + (i * j) + "</br>");
            }
            writer.println("</br>");
        }
 
        writer.println("</body>");
        writer.println("</html>");
 
        writer.close();
    }
 
    /**
     * @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);
    }
 
}
 
 cs

 

.....

 

 

2.프로토콜이란 무엇이며, 프로토콜의 종류는?

 

 

 

 

3.*.jsp 가 컴파일 되는 과정을 설명하시오.

 

 

4. 아래를 프로그래밍 하시오.

아래의 주소를 접속시 아래가 웹브라우져에 나타나도록 하시오.
http://localhost:8282/프로젝트명/programmer.jsp

I am a programmer (웹브라우져 출력)

 

 

5. HttpServlet에 대하여 설명하시오.

 

 

6.web.xml 에 대하여 설명하시오.

 

 

'면접준비 > KOSMO 허쌤 숙제' 카테고리의 다른 글

스프링 - Command 객체, 성적 산출, 석탑만들기 (21/12/16)  (0) 2021.12.16
학습정리-11-18  (0) 2021.11.18
학습정리-11-10  (0) 2021.11.10
학습정리-11-09  (0) 2021.11.09
학습정리-11-08  (0) 2021.11.08
댓글