์ „์ฒด ๊ธ€

๐Ÿ’ป Back-End Developer ๐Ÿ’ป ๊ธธ๊ฐ€๋‹ค ๋งŒ๋‚œ ์—๋Ÿฌ์™€ ์–ด๋ ค์› ๋˜ ์ ์„ ๊ธฐ๋กํ•˜๋Š” ๊ณณ์ž…๋‹ˆใ„ทใ… โ˜†*: .๏ฝก. o(โ‰งโ–ฝโ‰ฆ)o .๏ฝก.:*โ˜†
ยท[Etc]
[๋‹จ์ผ ์ฟผ๋ฆฌ ์‹คํ–‰ ๋‹จ์ถ•ํ‚ค] command + Enter [๋‹ค์ค‘ ์ฟผ๋ฆฌ ์‹คํ–‰ ๋‹จ์ถ•ํ‚ค] command + โฌ†๏ธ + Enter
[์ƒํ™ฉ] ํŒ€ ํ”„๋กœ์ ํŠธ๋ฅผ ์ด์œ ๋กœ git์—์„œ pull์„ ๋ฐ›์•„์™€์•ผ ํ•˜๋Š”๋ฐ 'Git Pull Failed' ๋ฉ”์„ธ์ง€๊ฐ€ ํ‘œ์‹œ๋˜์–ด์„œ difference๋“ค์„ ๊ณ ์ณค๋‹ค๊ฐ€ ์‚ฌ์šฉํ•˜์ง€ ์•Š๋Š” import๋ฌธ์ด ์ž๋™์œผ๋กœ ์‚ญ์ œ๋˜์–ด 'Git Pull Failed' ๋ฌดํ•œ๋ฃจํ”„์— ๋น ์ง€๊ฒŒ ๋˜์—ˆ๋‹ค. [๋ฌธ์ œ ํ•ด๊ฒฐ ๊ณผ์ •] 1. Settings - Editor - General - Auto Import - Java - Optimize imports on the fly ์ฒดํฌ ํ•ด์ œ [๋ฌธ์ œ ํ•ด๊ฒฐ ์™„๋ฃŒ] No differences ์ƒ๊ฒผ์ฅฌ? pull ์™„๋ฃŒ !
[์ƒํ™ฉ] 'http://localhost:8080/order/orderJspPage'์—์„œ '์นด๋“œ ๊ฒฐ์ œ' ๋ฒ„ํŠผ ์ฒดํฌ ํ›„ '๊ฒฐ์ œํ•˜๊ธฐ' ๋ฒ„ํŠผ ๋ˆ„๋ฅด๋ฉด ๋‹ค์Œ๊ณผ ๊ฐ™์€ ๊ฒฐ์ œ API๊ฐ€ ํ˜ธ์ถœ๋˜๊ณ , ๊ฒฐ์ œ ์™„๋ฃŒ ์‹œ, order.js์—์„œ ๊ตฌ์„ฑ๋œ ๋‹ค์Œ์˜ ์ฝ”๋“œ ์ผ๋ถ€๋กœ ์ธํ•ด 'http://localhost:8080/order/paySuccess.jsp'๋กœ ํŽ˜์ด์ง€๊ฐ€ ๋„˜์–ด๊ฐ€์•ผํ•œ๋‹ค. //order.js //ํฌํŠธ์› API : ์นด๋“œ ๊ฒฐ์ œ ์š”์ฒญ // [1-1] card ๊ฒฐ์ œ API ํ˜ธ์ถœ function payment(){ // 1. ํฌํŠธ์› ๊ณ„์ • ์—ฐ๋™ ๋ฐ API ์—ฐ๊ฒฐ var IMP = window.IMP; IMP.init("imp******"); //ํฌํŠธ์› API ๊ณ„์ • ๋ฒˆํ˜ธ //์‹œํฌ๋ฆฟ ํ‚ค ์ฒ˜๋ฆฌ ํ•ด์•ผํ•จ // 2-1. order.jsp ์ „๋‹ฌ ๋œ ..
[์ƒํ™ฉ] intellij ํ™˜๊ฒฝ์—์„œ mysql๊ณผ ์—ฐ๊ฒฐํ•ด์•ผํ•จ, intellij ๋‚ด config.properties ํŒŒ์ผ ๋‚ด ์‹œํฌ๋ฆฟ ํ‚ค์˜ ๊ฐ’์„ ๋ฐ”๊พธ๊ณ  DB์™€ ์—ฐ๊ฒฐ์‹œ์ผœ์•ผํ•จ spring.datasource.driverClassname = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://hostname:3306/new_schema spring.datasource.username = username spring.datasource.password = 1234 [๋ฌธ์ œ ๋ฐœ์ƒ] Caused by: java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) DB์— ์—ฐ๊ฒฐ ์‹œ..
ยท[Language]/VIEW
[์ƒํ™ฉ]1. (์ž๋ฐ” ์Šคํฌ๋ฆฝํŠธ) ๊ธฐ๋Šฅ ๊ตฌํ˜„ ๋ชฉํ‘œ๊ฒฐ์ œ ๋ฐฉ๋ฒ• ๋ฒ„ํŠผ 3๊ฐœ (์นด๋“œ, ๊ณ„์ขŒ์ด์ฒด, ์นด์นด์˜คํŽ˜์ด) ์ค‘ ์นด๋“œ ๋ฒ„ํŠผ ํด๋ฆญ ์‹œ,ํด๋ฆญ ๋œ ๋ฒ„ํŠผ : ํ…Œ๋‘๋ฆฌ ์—†์•ฐ, ๋ฐฐ๊ฒฝ ์ƒ‰์ƒ 'ํŒŒ๋ž€์ƒ‰', ๊ธ€์ž ์ƒ‰์ƒ 'ํฐ์ƒ‰'ํด๋ฆญ ๋˜์ง€ ์•Š์€ ๋ฒ„ํŠผ : ๊ธฐ์กด ๋””์ž์ธ ์œ ์ง€ ์นด์นด์˜คํŽ˜์ด, ๊ณ„์ขŒ์ด์ฒด ๋ฒ„ํŠผ ์œ„์™€ ๋™์ผ [1์ฐจ ๊ธฐ๋Šฅ ๊ตฌํ˜„ ์™„๋ฃŒ]1. ๋ฉ”์„œ๋“œ ๊ตฌํ˜„// ๊ฒฐ์ œ ๋ฐฉ๋ฒ• '๋ฒ„ํŠผ' ํด๋ฆญ ์‹œ, ํด๋ฆฐ ๋œ ๋ฒ„ํŠผ์˜ ์ƒ‰์ƒ ๋ณ€๊ฒฝfunction changeBtnColor(id) { var paymentBtns = document.getElementById(id); paymentBtns.style.border = "none"; paymentBtns.style.backgroundColor = "#0185FE"; paymentBtns.style..
[์—๋Ÿฌ ๋ฐœ์ƒ : TypeError] order.js:113 Uncaught (in promise) TypeError: Cannot read properties of null (reading 'value') at payment (order.js:113:27) at HTMLInputElement. (order.js:12:9) payment @ order.js:113 (์ต๋ช…) @ order.js:12 [์—๋Ÿฌ ์›์ธ] order.js์˜ 'payment()' ๋‚ด ํŒŒ๋ผ๋ฏธํ„ฐ ๊ฐ’์˜ ๋ฐ์ดํ„ฐ๋กœ ๋ถˆ๋Ÿฌ์˜ฌ value ๊ฐ’์„ ๋ถˆ๋Ÿฌ์˜ค์ง€ ๋ชปํ•จ ๋‹น์žฅ order.js ๋กœ ๊ฐ€์ž [๋ฌธ์ œ ํ•ด๊ฒฐ ๊ณผ์ •] 1. order.js function payment(){ var IMP = window.IMP; IMP.init("imp******"); //ํฌํŠธ..
ยท[Git]
[์ƒํ™ฉ] intellij์—์„œ git ์—ฐ๋™ํ•˜๋ฉด์„œ ํŒ€ ํ”„๋กœ์ ํŠธ ์ง„ํ–‰ ์ค‘, PR ์™„๋ฃŒ ๋œ ํŒ€์›๋“ค์ด ๋ณ€๊ฒฝํ•œ ํŒŒ์ผ์„ ๋‚ด local ์ธํ…”๋ฆฌ์ œ์ด์— ๋ฐ˜์˜ํ•˜๊ธฐ ์œ„ํ•ด sync fork์™€ fetch ์™„๋ฃŒ ํ›„ Pull ํด๋ฆญ [์—๋Ÿฌ ๋ฉ”์„ธ์ง€] Git Pull Failed Your local changes will be overwritten by merge. Commit, stash, or revert them to proceed. View them [๋ฌธ์ œ ํ•ด๊ฒฐ ๊ณผ์ •] 1. View them ํด๋ฆญ ํด๋ฆญํ•˜๋ฉด 'Local Changes Prevent from Pull' ์ฐฝ์œผ๋กœ ๋“ค์–ด๊ฐ€์ง„๋‹ค. ๊ทธ๋Ÿผ ๋‹ฌ๋ผ์ง„ ๋ถ€๋ถ„์ด ์žˆ๋Š” ํŒŒ์ผ๋“ค์ด ๋ณด์ด๊ฒŒ ๋˜๊ณ , ๊ทธ ํŒŒ์ผ๋“ค ์•ˆ์—์„œ '>>' ํด๋ฆญํ•˜๋ฉด ๋ณ€๊ฒฝ๋œ๋‹ค. ๊ณต๋ฐฑ ๋ถ€๋ถ„๋„ ๋‹ค ๋ฐ˜์˜ํ•ด์ค˜์•ผํ•จ ํ•˜์ง€๋งŒ ๋ฐ˜์˜ํ•˜๋ ค๊ณ  ํ•ด๋„ ..
์•„์•— ! ์ด๋Ÿฐ ๋ฐ”๋ณด๊ฐ™์€ ์‹ค์ˆ˜๋ฅผ ! [์ƒํ™ฉ] ํฌํŠธ์› ๊ฒฐ์ œ API ์š”์ฒญํ•˜์—ฌ ๊ฒฐ์ œ ์™„๋ฃŒ ํ›„ ์‚ฌ์šฉ์ž์˜ ์‹ ์šฉ์นด๋“œ ๋ฒˆํ˜ธ๋ฅผ DB์— ๋„ฃ์–ด์•ผ ํ•จ [๊ฒฐ์ œ์™„๋ฃŒ ์นด๋“œ ๋ฒˆํ˜ธ ๋ฐ์ดํ„ฐ ๋„˜๊ธฐ๊ธฐ ์œ„ํ•ด ์•„๋ž˜ ํŒŒ์ผ๋“ค ์ˆ˜์ • ๊ณผ์ •] 1. StodDTO.java private int creditNum; ์‹ ์šฉ์นด๋“œ ๋ฒˆํ˜ธ ๋ฐ์ดํ„ฐ๊ฐ€ ์ €์žฅ ๋  ์ปฌ๋Ÿผ ์ถ”๊ฐ€, ์ƒ์„ฑ์ž / getter / setter / toString ์ถ”๊ฐ€ 2. StodMapper.xml INSERT INTO payHty (odNo, id, lstPrice, payType, slrName, slrNum, bsnsName, indst, kind, slrPhone, creditNum, state, cardType, instlFees, slrAddr) VALUES (#{odNo}, #{id}, ..
Caused by: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'stodDaoImpl': Requested bean is currently in creation: Is there an unresolvable circular reference? ์Šคํ”„๋ง์ด ๋นˆ์„ ์ƒ์„ฑํ•˜๋Š” ๊ณผ์ •์—์„œ ์ˆœํ™˜ ์ฐธ์กฐ๊ฐ€ ๋ฐœ์ƒํ–ˆ์Œ์„ ๋‚˜ํƒ€๋‚ด๋Š” ์—๋Ÿฌ ๋ฌธ๊ตฌ์ด๋‹ค. - ์ˆœํ™˜ ์ฐธ์กฐ๋ž€? ๋นˆ A๊ฐ€ ๋นˆ B ์˜์กด, ๋นˆ B๊ฐ€ ๋นˆ A ์˜์กด => ๋นˆ์„ ์ดˆ๊ธฐํ™”ํ•˜๋Š” ๋™์•ˆ ์„œ๋กœ๊ฐ€ ์„œ๋กœ๋ฅผ ๊ธฐ๋‹ค๋ฆฌ๊ฒŒ ๋˜์–ด ๋นˆ ์ƒ์„ฑ ๋ถˆ๊ฐ€ ๋ฌธ์ œ ๋ฐœ์ƒ - ํ•ด๊ฒฐ ๋ฐฉ๋ฒ• ์ˆœํ™˜ ์ฐธ์กฐ๋ฅผ ์ผ์œผํ‚ค๋Š” ๋นˆ๋“ค ์‚ฌ์ด์˜ ์˜์กด์„ฑ ์ œ๊ฑฐ or ๋ณ€๊ฒฝ ์—๋Ÿฌ ๋ฉ”์„ธ์ง€ Caused by: org.s..
์ƒํ™ฉ : ์ฃผ๋ฌธ ๋‚ด์—ญ ํ…Œ์ด๋ธ”์— ์ฃผ๋ฌธ์ •๋ณด ๋ฐ์ดํ„ฐ ์‚ฝ์ž…ํ•ด์•ผํ•จ ['์‚ฌ์šฉ์ž ๊ฒฐ์ œ ์™„๋ฃŒ X' โ–ถ๏ธ '๊ฒฐ์ œํ•˜๊ธฐ' ๋ฒ„ํŠผ ํด๋ฆญ ์‹œ ์ฃผ๋ฌธ ๋‚ด์—ญ ํ…Œ์ด๋ธ”์— ์ฃผ๋ฌธ์ •๋ณด ๋ฐ์ดํ„ฐ ์‚ฝ์ž…] vs ['์‚ฌ์šฉ์ž ๊ฒฐ์ œ ์™„๋ฃŒ O' โ–ถ๏ธ ๊ฒฐ์ œ ์™„๋ฃŒ ํ›„ ์ฃผ๋ฌธ ๋‚ด์—ญ ํ…Œ์ด๋ธ”์— ์ฃผ๋ฌธ์ •๋ณด ๋ฐ์ดํ„ฐ ์‚ฝ์ž…] ๋ฐ์ดํ„ฐ ์‚ฝ์ž… ์‹œ์ ์€ ์‚ฌ์—…์˜ ํŠน์„ฑ๊ณผ ์š”๊ตฌ ์‚ฌํ•ญ์— ๋”ฐ๋ผ ๋‹ฌ๋ผ์ง. ๋น„์ฆˆ๋‹ˆ์Šค ๋ชฉํ‘œ์™€ ์ „๋žต์— ๋”ฐ๋ผ ๋‹ฌ๋ผ์งˆ ์ˆ˜ ์žˆ์œผ๋ฏ€๋กœ, ์—ฌ๋Ÿฌ ๊ด€์ ์—์„œ ๊ณ ๋ คํ•ด๋ณด๋Š”๊ฒŒ ์ข‹์Œ. 1. ๋ฐ์ดํ„ฐ ์ •ํ™•์„ฑ 2. ๋ฐ์ดํ„ฐ ๋ถ„์„ 3. ์‹œ์Šคํ…œ ์„ฑ๋Šฅ ์œ„ 3๊ฐ€์ง€๋ฅผ ๊ณ ๋ คํ•˜์—ฌ ์‚ฝ์ž… ์‹œ์  ๊ฒฐ์ • ['์‚ฌ์šฉ์ž ๊ฒฐ์ œ ์™„๋ฃŒ X' โ–ถ๏ธ '๊ฒฐ์ œํ•˜๊ธฐ' ๋ฒ„ํŠผ ํด๋ฆญ ์‹œ ์ฃผ๋ฌธ ๋‚ด์—ญ ํ…Œ์ด๋ธ”์— ์ฃผ๋ฌธ์ •๋ณด ๋ฐ์ดํ„ฐ ์‚ฝ์ž…] ๊ฒฐ์ œ ์™„๋ฃŒํ•˜์ง€ ์•Š์€ ์ฃผ๋ฌธ ๊ธฐ๋ก ์‹œ, 1. ๋ฐ์ดํ„ฐ ์ •ํ™•์„ฑ status ์ปฌ๋Ÿผ์— '๊ฒฐ์ œ ๋Œ€๊ธฐ ์ค‘', '์ฃผ๋ฌธ ์ทจ์†Œ' ๋“ฑ์˜ ์ƒํƒœ ..
mac terminal ์ ‘์† Spring ํ•™์Šต ์œ„ํ•ด JAVA 11 ๋ฒ„์ „์ด ํ•„์š”ํ•œ ์ƒํ™ฉ, ์›๋ž˜ ์ž๋ฐ” ๋ฒ„์ „์€ 8์ธ ๊ฒƒ ๊ฐ™๋‹ค. brew update ์—…๋ฐ์ดํŠธ ํ•ด์ฃผ๊ณ  brew tap adoptopenjdk/openjdk brew search jdk jdk ์ฐพ์€ ํ›„ brew install --cask adoptopenjdk11 jdk 11 ๋ฒ„์ „ ์„ค์น˜ /usr/libexec/java_home -v java๊ฐ€ ์„ค์น˜๋œ ๊ฒฝ๋กœ ํ™•์ธํ•ด์ฃผ๊ณ  java -version ์ž๋ฐ” ๋ฒ„์ „ ํ™•์ธ ์„ค์น˜ ์„ฑ๊ณต
ํ„ฐ๋ฏธ๋„ ์ ‘๊ทผ ํ›„ sudo lsof -PiTCP -sTCP:LISTEN ๊ทธ๋Ÿผ PID๊ฐ€ ์ขŒ๋ฅด๋ฅต ๋‚˜์˜ค๋Š”๋ฐ java PID๋ฅผ ์ง€์šฐ์ž kill -9 11524 ๊ตฌ๋Ÿผ ๋
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