๐Ÿ“† Today I Learned(๊ฐœ๋ฐœ์–ธ์–ดํ•™์Šต)/JSP

    Day05(cookie02)

    02cookiePath.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ 02cookieAll.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ํŒŒ์ผ๊ฒฝ๋กœ

    Day05(cookie01)

    01makeCookie.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ 01viewCookie.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ 01modifyCookie.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ 01delete.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ

    Day05(javaBean)

    JavaBean ๊ทœ์•ฝ (javaํด๋ž˜์Šค ์ค‘ ๊ทœ์•ฝ์ง€ํ‚จ ํด๋ž˜์Šค) VO(value Object) DTO(Data Transfer Object) 1.ํŒจํ‚ค์ง€์•ˆ์— ์žˆ์–ด์•ผํ•จ 2.ํ•„๋“œ private 3.getter setter public 4.๊ธฐ๋ณธ ์ƒ์„ฑ์ž (์ฃผ์˜) 5.์ง๋ ฌํ™”(์„ ํƒ์‚ฌํ•ญ) maven repository๊ฒ€์ƒ‰ ํ›„ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ ๋‹ค์šด 01form.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ id : ์ด๋ฆ„ : ๋น„๋ฐ€๋ฒˆํ˜ธ : ์—ญํ•  : ๋กœ๊ทธ์ธ 01javaBean.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ

    Day04(<%@ include %>)

    04include.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ 04include include ์ „ include ํ›„ 04included.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ๋‚˜๋Š” included๋œ jspํŽ˜์ด์ง€ ์ถœ๋ ฅ๋‚ด์šฉ ๋Š”???? ์„ค๋ช… ์„œ๋ฒ„์ธก include ๋ผ๊ณ  ์ƒ๊ฐํ•˜๋ฉด ๋œ๋‹ค ์ฆ‰ ์†Œ์Šค ์‹คํ–‰์ „์— include๊ฐ€ ๋œ๋‹ค๊ณ  ๋ณด์ž ์†Œ์Šค ์‹คํ–‰์ „ ํฌํ•จ๋จ์œผ๋กœ ๋ณ€์ˆ˜๋ฅผ ๊ฐ™์ด ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค ๋™์ ์œผ๋กœ ํŽ˜์ด์ง€ ํ• ๋‹น์„ ํ•  ์ˆ˜๊ฐ€ ์—†๋‹ค. ์ฆ‰ ์ •์ ์ธ ํŽ˜์ด์ง€์— ํ™œ์šฉ๋œ๋‹ค๋Š” ๊ฒƒ ! ์†์„ฑ file : ํฌํ•จ๋  ํŽ˜์ด์ง€๋ฅผ ๋ช…์‹œํ•œ๋‹ค jsp:include VS include file ์ฐจ์ด๋ฅผ ์ž˜ ์ƒ๊ฐํ•  ๊ฒƒ ! ํ™œ์šฉํ•˜๋Š” ๊ณณ์ด ๋‹ค๋ฅผํ…Œ๋‹ˆ !

    Day04(jsp:forward)

    03form.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ aoa blackPink 03result.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ํฌ์›Œ๋“œ ๋˜๊ธฐ ์ „ ๋ฐ์ดํ„ฐ ๋‚˜์˜ค๋‚˜ forward๋˜๊ณ  ๋‚˜์„œ ์‹คํ–‰๋˜๋‚˜? aoa.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ member๋ชฉ๋ก : blackPink.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ์ถœ๋ ฅ๋‚ด์šฉ jsp:forwardํƒœ๊ทธ ์‚ฌ์šฉ include๋ž‘ ๋‹ค๋ฅด๊ฒŒ ๋ฒ„ํผ๋ฅผ ๋น„์šฐ๊ณ  ํ•ด๋‹น ํŽ˜์ด์ง€ ์ถœ๋ ฅํ•˜๊ณ  ํŽ˜์ด์ง€๊ฐ€ ๋„˜์–ด๊ฐ„๋‹ค. (03result.jsp์—์„œ ์ƒ๋‹จ๊ณผ ํ•˜๋‹จ์— ์ž…๋ ฅํ•ด๋‘” ํ…์ŠคํŠธ๋“ค์€ ์ถœ๋ ฅ๋˜์ง€์•Š๋Š”๋‹ค. ex) ํฌ์›Œ๋“œ ๋˜๊ธฐ ์ „ ๋ฐ์ดํ„ฐ ๋‚˜์˜ค๋‚˜) formํƒœ๊ทธ์—์„œ ๋ญ˜ ์ž…๋ ฅํ–ˆ๋ƒ์— ๋”ฐ๋ผ ์„œ๋กœ ๋‹ค๋ฅธ ํŽ˜์ด์ง€๋กœ ๋„˜์–ด๊ฐ€๊ฒŒ ๋œ๋‹ค.

    Day04(jsp:include๋™์ ํŽ˜์ด์ง€ํ• ๋‹น)

    02form.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ํƒ•์ˆ˜์œก ์ฐ๋จน ๋ถ€๋จน ์ฒ˜๋จน ๋‚˜์˜ ํƒ•์ˆ˜์œก ์ทจํ–ฅ 02other.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ otherํŽ˜์ด์ง€ โ€ป jspํƒœ๊ทธ ์•ˆ์—์„œ๋Š” ์ฃผ์„์„ ์‚ฌ์šฉํ•˜์ง€ ๋ง์ž !!! 02otherInclude.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ otherInclueํŽ˜์ด์ง€ ๋‚ด ํƒ•์ˆ˜์œก ์ทจํ–ฅ : ์„ฑ๊ฒฉ : jsp ํŒŒ๋ผ๋ฏธํ„ฐ ์—†๋‹ค๊ณ  ์ƒ๊ฐํ•˜๊ณ  ํƒ•์ˆ˜์œก ์ทจํ–ฅ์— ๋”ฐ๋ฅธ ์„ฑ๊ฒฉ ์ถœ๋ ฅ๋‚ด์šฉ

    Day04(pageModule)

    00main.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ jsp include ์ „ jsp include ํ›„ 00sub.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ๋‚˜๋Š” jsp include ๋œ ํŽ˜์ด์ง€ ๋‚ด์šฉ์ด์•ผ 00main.jsp์˜ ์ถœ๋ ฅ๋‚ด์šฉ 1. ์„ค๋ช… - ์„œ๋ฒ„์ธก include๊ฐ€ ์•„๋‹Œ ํด๋ผ์ด์–ธํŠธ์ธก์˜ include๋ผ ์ƒ๊ฐํ•˜๋ฉด ๊ฐ„๋‹จํ•˜๋‹ค. ์ฆ‰ ์ถœ๋ ฅ ๊ฒฐ๊ณผ๋งŒ(html์ฝ”๋“œ)์„ include ํ•œ๋‹ค - include ๋˜๋Š” ํŽ˜์ด์ง€์™€ ๋ณ€์ˆ˜๋ฅผ ๊ฐ™์ด ์‚ฌ์šฉํ•  ์ˆ˜ ์—†๋‹ค 2. ์†์„ฑ page ํฌํ•จ์‹œํ‚ค๊ณ ์ž ํ•˜๋Š” ๋ฌธ์„œ์˜ ์œ„์น˜๋ฅผ ๋ช…์‹œํ•œ๋‹ค ์ƒ๋Œ€๊ฒฝ๋กœ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ์ ˆ๋Œ€๊ฒฝ๋กœ๋„ ๊ฐ€๋Šฅํ•˜๋‹ค ์„œ๋ธ”๋ฆฟ ์ปจํ…Œ์ด๋„ˆ์— ๋”ฐ๋ผ HTML ํŽ˜์ด์ง€๋Š” ์•ˆ๋  ์ˆ˜๋„ ์žˆ๋‹ค get ๋ฐฉ์‹์œผ๋กœ ํŒŒ๋ผ๋ฏธํ„ฐ๋ฅผ ์ „๋‹ฌ ํ• ์ˆ˜ ์—†๋‹ค ๋™์ ์œผ๋กœ ํŽ˜์ด์ง€ ํ• ๋‹น์ด ๊ฐ€๋Šฅํ•˜๋‹ค ์ฆ‰ ๊ฐ€ ๊ฐ€๋Šฅํ•˜๋‹ค flush true : ๋ฌธ์„œ์˜ ์ถœ๋ ฅ ๊ฒฐ๊ณผ๋ฅผ ํ•ญ์ƒ ๋ฒ„ํผ๋‚ด์—์„œ ๊ฐฑ์‹  ํ•˜๋ผ๋Š” ..

    Day04(errorํƒ€์ž…์ง€์ •)

    ์—๋ŸฌํŽ˜์ด์ง€๋ฅผ ํ•˜๋‚˜๋งŒ ์ง€์ •ํ•ด์ค˜๋„ ๋˜์ง€๋งŒ ์—ฌ๋Ÿฌ mainํŽ˜์ด์ง€์—์„œ ๋‹ค์–‘ํ•œ ์—๋Ÿฌ๊ฐ€ ๋ฐœ์ƒํ• ๋•Œ๋งˆ๋‹ค ์—๋Ÿฌ ํƒ€์ž…์— ๋”ฐ๋ผ ์„œ๋กœ ๋‹ค๋ฅธ ํŠน์ • ์—๋ŸฌํŽ˜์ด์ง€๋ฅผ ๋ณด์—ฌ์ฃผ๊ณ ์‹ถ์„ ๋•Œ๋Š” ์–ด๋–ป๊ฒŒ ํ•ด์•ผํ•˜๋Š”๊ฐ€? 02errorMain.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ 02errorClassCast.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ํด๋ž˜์Šค์ผ€์ŠคํŠธ ์—๋ŸฌํŽ˜์ด์ง€ 02errorNullPointer.jsp์˜ ์ฝ”๋“œ๋‚ด์šฉ ๋„ํฌ์ธํ„ฐ ์—๋ŸฌํŽ˜์ด์ง€ 02errorMain.jsp์—์„œ request๊ฐ์ฒด๋ฅผ ์ด์šฉํ•ด์„œ error์˜ ํŒŒ๋ผ๋ฏธํ„ฐ ๊ฐ’์„ ๋ฐ›์•„์„œ ๋ณ€์ˆ˜์— ๋Œ€์ž…ํ•˜์—ฌ if๋ฌธ์„ ํ†ตํ•ด ์—๋Ÿฌ์˜ ์ข…๋ฅ˜์— ๋”ฐ๋ผ ์—๋Ÿฌ๋ฅผ ๋ฐœ์ƒ์‹œํ‚ค๋„๋ก ํ•˜์˜€๊ณ , WEB-INF ๋ฐ‘์˜ web.xml์— ํ•ด๋‹น ์ฝ”๋“œ๋ฅผ ์ถ”๊ฐ€ ํ•˜์˜€๋‹ค. java.lang.NullPointerException /06error/02errorNullPointer.jsp ๋ณด์—ฌ์ค„ j..