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★ 일기장 AJAX
■ 필요 파일들
- com.test.java > Ex12.java
- com.test.java > Ex12Data.java
- views > ex12.jsp
■ 데이터 베이스
create table tblJournal (
seq number primary key,
line varchar2(1000) null
);
insert into tblJournal values (1, null);
insert into tblJournal values (2, null);
insert into tblJournal values (3, null);
insert into tblJournal values (4, null);
insert into tblJournal values (5, null);
insert into tblJournal values (6, null);
insert into tblJournal values (7, null);
insert into tblJournal values (8, null);
insert into tblJournal values (9, null);
insert into tblJournal values (10, null);
insert into tblJournal values (11, null);
insert into tblJournal values (12, null);
insert into tblJournal values (13, null);
insert into tblJournal values (14, null);
insert into tblJournal values (15, null);
■ 소스코드
- Ex12.java
package com.test.ajax;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/ex12.do")
public class Ex12 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//Ex12.java
RequestDispatcher dispatcher = req.getRequestDispatcher("/WEB-INF/views/ex12.jsp");
dispatcher.forward(req, resp);
}
}
- Ex12Data.java
package com.test.ajax;
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;
@WebServlet("/ex12data.do")
public class Ex12Data extends HttpServlet {
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String seq = req.getParameter("seq");
String line = req.getParameter("line");
System.out.println(seq);
System.out.println(line);
//Ex12Data.java
AjaxDAO dao = new AjaxDAO();
Ex12DTO dto = new Ex12DTO();
dto.setSeq(seq);
dto.setLine(line);
dao.editLine(dto);
}
}- ex12.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<link rel="stylesheet" href="https://me2.do/5BvBFJ57">
<style>
.line {
display: block;
width: calc(100% - 20px);
border: 0px;
border-bottom: 1px solid #999;
border-radius: 0;
margin-bottom: 5px;
}
#message {
width: 100%;
height: 100vh;
background-color: rgba(0, 0, 0, .1);
position:absolute;
left: 0;
top: 0;
display: none;
justify-content: center;
align-items : center;
}
#message > div {
width: 150px;
height: 20px;
background-color: white;
}
</style>
</head>
<body class="narrow">
<!-- ex12.jsp -->
<h1>Journal</h1>
<div>
<c:forEach items="${list}" var="dto" varStatus="status">
<input type="text"
name="line${status.count}"
id="line${status.count}"
class="line"
value="${dto.line}">
</c:forEach>
<!--
<input type="text" name="line2" id="line2" class="line">
<input type="text" name="line3" id="line3" class="line">
<input type="text" name="line4" id="line4" class="line">
<input type="text" name="line5" id="line5" class="line">
<input type="text" name="line6" id="line6" class="line">
<input type="text" name="line7" id="line7" class="line">
<input type="text" name="line8" id="line8" class="line">
<input type="text" name="line9" id="line9" class="line">
<input type="text" name="line10" id="line10" class="line">
<input type="text" name="line11" id="line11" class="line">
<input type="text" name="line12" id="line12" class="line">
<input type="text" name="line13" id="line13" class="line">
<input type="text" name="line14" id="line14" class="line">
<input type="text" name="line15" id="line15" class="line">
-->
</div>
<div id="message">
<div>자동 저장되었습니다.</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.4/jquery.min.js"></script>
<script>
let timer = 0;
$('.line').keydown(function() {
clearTimeout(timer);
let temp = this;
timer = setTimeout(function() {
//$(temp).blur();
let seq = $(temp).index() + 1;
let line = $(temp).val();
$.ajax({
type: 'POST',
url: '/ajax/ex12data.do',
data: {
seq: seq,
line: line
},
error: (a,b,c)=>console.log(a,b,c)
});
}, 5000);
});
$('.line').focus(function() {
let temp = this;
timer = setTimeout(function() {
$(temp).blur();
}, 5000);
});
$('.line').blur(function() {
//alert($(event.target).index());
let seq = $(this).index() + 1;
let line = $(this).val();
$.ajax({
type: 'POST',
url: '/ajax/ex12data.do',
data: {
seq: seq,
line: line
},
error: (a,b,c)=>console.log(a,b,c)
});
//안내 메시지
$('#message').css('display', 'flex');
setTimeout(function() {
$('#message').css('display', 'none');
}, 500);
});
</script>
</body>
</html>
- ex12DTO.java
package com.test.ajax;
import lombok.Data;
@Data
public class Ex12DTO {
private String seq;
private String line;
}
■ 실행 결과
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