๐ Today I Learned(๊ฐ๋ฐ์ธ์ดํ์ต)/JSP
Day07(el)array, collection
05array.jsp ${i } ${st.count } 06collection.jsp ์ด๋ฆ : ${user.userName }, ID : ${user["userId"] }, pass : ${user.userPass }, role : ${user.userRole } ${entry.key } ${entry.value } ์ด๋ฆ : ${entry.value.userName }
Day07(el)๊ตฌ๊ตฌ๋จ, ๋ณ์ฐ๊ธฐ
04gugu.jsp ${k} ๋จ ${j} * ${i} = ${(i*j) } ์ง์๋จ ${k} ๋จ ${j} * ${i} = ${(i*j) } 04star.jsp *
Day07(jstl)set, if, choose, for
1. JSTL์ด๋? ์ผ๋ฐ์ ์ผ๋ก ์๊ณ ์๋ JSTL์ด๋ JSTL + EL์ ์กฐํฉ์ ๋งํ๋ค. HTML ์ฝ๋ ๋ด์ java ์ฝ๋์ธ ์คํฌ๋ฆฝํ๋ฆฟ ๋ฅผ ${student}๋ก, ๋ฌธ์ , ๋ฌธ์ ๋ก ๋์ฒดํ์ฌ ์ฌ์ฉํ๋ค. 01set.jsp ${aa } ${b } set์ ํ์ฉํด์ jsp์์ ์ฌ์ฉํ ๋ณ์๋ฅผ ์ค์ ํ ์ ์๋ค. ์ด์ ๊ฐ์ ํ๊ทธ๋ฅผ ์ฝ์ดํ๊ทธ๋ผ๊ณ ํ๋ ๋ฐ, ์ฝ์ดํ๊ทธ ๋ผ์ด๋ธ๋ฌ๋ฆฌ๋ ๋ณ์ ์ค์ ์ด๋ if-else์ ๊ฐ์ ๋ ผ๋ฆฌ ์ฒ๋ฆฌ์ ์ฌ์ฉ๋๋ ์คํฌ๋ฆฝํธ ์ฝ๋๋ฅผ ๋์ฒดํ๋ ํ๊ทธ๋ฅผ ์ ๊ณตํ๋ค. ๋ํ ์ฝ์ด ํ๊ทธ ๋ผ์ด๋ธ๋ฌ๋ฆฌ๋ฅผ ์ฌ์ฉํ๋ ค๋ฉด jspํ์ด์ง์ http://java.sun.com/jsp/jstl/core" %>๋ฅผ ์ถ๊ฐํด์ผํ๋ค.(๋ฌผ๋ก jstl๋ผ์ด๋ธ๋ฌ๋ฆฌ๋ฅผ ๋ฐ๋ก ๋ฐ์์ผํ๋ค.) 02input.jsp 02if.jsp ์ ์ฐ ๋ฏธ ์ ์ฐ ๋ฏธ ์ ์์..
Day07(el)lambda
07lambda.jsp์ ์ฝ๋๋ด์ฉ lambda ์๋ฐ๋ ๋๊ฐ์ ํจ์๋ช = (,) -> return ${sum=(a,b) -> a+b ; ''} ${sum(30,24) } ${ ch=a->a+10 ; ''} ${ch(10) } ${factorial=a-> a==1 ? 1: a*factorial(a-1) ; '' } ${factorial(5) } 120 ${gause=(a,b)->(a+b)*(b-a+1)/2 ; ''} ${gause=(1,100) } ${pitagoras=(a,b) ->Math.sprt(a*a+b*b) ; '' } ${pitagoras(3,4) }
Day07(el)method
06method.jsp์ ์ฝ๋๋ด์ฉ : ${u.userId } : ${u.userName } ${u.getUserId() } : ${u.userId } ${u.setUserId("gks") ; ''} ${u.getUserId() } : ${u.userId } ${ ProductList.getProductList() }
Day07(el)์ธ๋ฏธ์ฝ๋ก ์ฐ์ฐ์
05semicolon.jsp์ ์ฝ๋๋ด์ฉ ${ a = "๊ธธ๋" ; ""} ${b=3 ; ''} ${a }${b } EL์์ ;์ ์์ ๋ถ๋ถ์ ์ถ๋ ฅํ์ง ์๋๋ค. ๋ณ์ ์ ์ธ๋ง ํ๊ณ ์ถ๋ ฅ์ ๋์ค์ ํด์ผํ ๋ ์ฌ์ฉํ๋ค.
Day07(el) ์ปฌ๋ ์
04collection.jsp์ ์ฝ๋๋ด์ฉ ${userList } ${userList[2]} ${userMap } ${ {1,2,3,4,5} } ${ {"์ฐฝ๋ฏผ": 1, "down":2, "inook":3} } ${ [6,7,8,9,10] } ์ฌ์ฉ๋ฒ ๊ฐ๋จ ์ค๋ช list : ${ {} }, map : ${ {"":Object } } , set : ${[]}
Day07(el) ์ฌ์น์ฐ์ฐ, ๋ฌธ์์ด, ๋น๊ต์ฐ์ฐ์
02pmdm.jsp์ฝ๋๋ด์ฉ ์ฌ์น์ฐ์ฐ, ๋ฌธ์์ด ${ 10+1 } ${ "10" } ${ "10"+1 } ${3.14 + "2.7" } ${30/3 } ${30 div 3 } ${30%3 } ${30 mod 3 } 03eq.jsp์ ์ฝ๋๋ด์ฉ ${ 3 == 5 } ${ 3 eq 5 } ${ 3>5 } ${ 3 gt 5} ${ 3=5 } ${ 3 ge 5 } ${ 3 ๋๋ gt = ๋๋ ge