{"id":446,"date":"2012-01-26T06:58:11","date_gmt":"2012-01-26T06:58:11","guid":{"rendered":"http:\/\/brain.dailyon.net\/?p=446"},"modified":"2012-01-26T06:58:11","modified_gmt":"2012-01-26T06:58:11","slug":"jsp-headfirst-9%ec%9e%a5-jstl-%ec%82%ac%ec%9a%a9%ed%95%98%ea%b8%b0-%eb%a7%89%ea%b0%95%ed%95%9c-%ec%bb%a4%ec%8a%a4%ed%85%80-%ed%83%9c%ea%b7%b8","status":"publish","type":"post","link":"https:\/\/blog.goorigo.com\/?p=446","title":{"rendered":"JSP : headfirst 9\uc7a5 jstl \uc0ac\uc6a9\ud558\uae30: \ub9c9\uac15\ud55c \ucee4\uc2a4\ud140 \ud0dc\uadf8"},"content":{"rendered":"

headfirst 9\uc7a5 jstl \uc0ac\uc6a9\ud558\uae30: \ub9c9\uac15\ud55c \ucee4\uc2a4\ud140 \ud0dc\uadf8<\/p>\n

1. JSTL(JSP \ud45c\uc900 \ud0dc\uadf8 \ub77c\uc774\ube0c\ub7ec\ub9ac) \uc744 \uc124\uce58 \ubc29\ubc95
\n\/\/ JSTL\uc744 \uc0ac\uc6a9\ud558\uae30 \uc704\ud574\uc11c\ub294 jstl.jar \uc640 standard.jar \ud30c\uc77c\uc774 \ud544\uc694\ud558\ub2e4.
\n\ud1b0\ucea3\uc5d0\uc81c \ud30c\uc77c\uc5d0 \uc788\ub294
\nwebapps\/jsp-examples\/WEB-INF\/lib\/jstl,jar
\nwebapps\/jsp-examples\/lib\/standard,jar
\n\ub97c \uc0ac\uc6a9\ud558\uace0\uc790 \ud558\ub294 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc758 WEB-INF\/lib \uc5d0 \uadf8\ub0e5 \ubcf5\uc0ac\ud558\uba74 \ub41c\ub2e4.<\/p>\n

2. JSTL\uc740 jsp\uc5d0\uc11c \uc2a4\ud06c\ub9bd\ud305\uc744 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0 \uac04\ub2e8\ud558\uac8c \ub85c\uc9c1\uc744 \uad6c\ud604\ud560\uc218 \uc788\uac8c \ub3c4\uc640\uc900\ub2e4.
\n3. HTML \ud0dc\uadf8\ub97c \ube0c\ub77c\uc6b0\uc800\uc5d0\uc11c \ubcc0\ud658\ud558\uc9c0\ub9d0\uace0 \uadf8\ub300\ub85c \ud0dd\uc2a4\ud2c0\ub85c \ucd9c\ub825\ud558\uace0 \uc2f6\uc744\ub54c
\n \ud0dc\uadf8\ub97c \uc0ac\uc6a9\ud558\uc790<\/p>\n

\n

\/\/ HTML\uc740 XHTML\ub85c \ucde8\uae09\ub418\uace0, \uc774\ub294 \ubc14\uafb8\uc5b4 \ub9d0\ud558\uba74 XML\uc774 \ub418\uc8e0
\n\/\/ \uadf8\ub798\uc11c HTML \ubb38\uc790\ub4e4\ub3c4 \ub611\uac19\uc774 \uc601\ud5a5\uc744 \ubc1b\ub294\ub2e4.
\n\/\/ escapeXml \uc740 \ub514\ud3f4\ud2b8 true \uc774\uace0 false\uc77c \uacbd\uc6b0\uc5d0 html\uc740 \ube0c\ub77c\uc6b0\uc800\uc5d0 \ud574\uc11d\ub418\uc5b4 \ubc84\ub9b0\ub2e4.\n<\/p><\/div>\n

3. \uc740 EL, \uc2a4\ud06c\ub9bd\ud305\uacfc \ub2e4\ub974\uac8c null\uc5d0 \ub300\ud574\uc11c default \uac12\uc744 \ub123\uc744\uc218 \uc788\ub2e4.<\/p>\n

\/\/ null \uc778 \uacbd\uc6b0 guest\uac00 \ucd9c\ub825\ub41c\ub2e4.
\nguest
\n\/\/ \uc774\ub7f0\uc2dd\uc73c\ub85c\ub3c4 \uac00\ub2a5\ud558\ub2e4.<\/p>\n

4. JSTL\uc758 \ud0dc\uadf8\ub97c \uc0ac\uc6a9\ud558\uba74, \ubc30\uc5f4\uacfc \uceec\ub809\uc158 \ub370\uc774\ud130\ub97c \ub8e8\ud504\ub85c \ub3cc\ub9ac\ub294 \uc791\uc5c5\uc744 \uac04\ub2e8\ud788 \ucc98\ub9ac \ud560\uc218 \uc788\ub2e4.<\/p>\n

\uc2a4\ud06c\ub9bd\ud305\uc77c\ub54c<\/p>\n\n<% String[] items = (string[]) request.getAttribute("movieList");
\nString var = null;
\nfor(int I =0; I <\/p>\n\n
\n<\/tr>\n<\/table>\n

\ud0dc\uadf8 \uc0ac\uc6a9\uc2dc<\/p>\n\n\n\n
${movie}<\/p>\n<\/tr>\n
${movieLoopCount.count}<\/p>\n<\/tr>\n<\/table>\n

\/\/ varStatus\ub294 \ubd80\uac00\uc18d\uc131\uc73c\ub85c \ub8e8\ud551 \uce74\uc6b4\ud130\ub97c \uc140\uc218\uc788\ub2e4.
\n\/\/ begin, end, step \ub4f1 \ubd80\uac00\uc801\uc778 \uc18d\uc131\ub3c4 \uc788\ub2e4 \ucc3e\uc544\ubd10\ub77c<\/p>\n

5. JSTP\ub85c \uc870\uac74\ubb38 \uc0ac\uc6a9\ud558\uae30 \ud0dc\uadf8\ub97c \uc0ac\uc6a9\ud558\ub77c<\/p>\n

6. \ud0dc\uadf8\ub294 else\ubb38\uc774 \uc5c6\uc5b4\uc11c \ub9ce\uc774 \ubd88\ud3b8\ud558\ub2e4.<\/p>\n

7. \ud0dc\uadf8\uc640 , \ud0dc\uadf8\ub85c if – else \ub97c \ub9cc\ub4e4 \uc218 \uc788\ub2e4.<\/p>\n

\ub10c \ud37c\ud3ec\uba3c\uc2a4\ub97c \uace8\ub790\uc5b4<\/p>\n

\ub10c \uc138\uc774\ud504\ud2f0\ub97c \uace8\ub790\uc5b4<\/p>\n

\ub10c \uba54\uc778\ud14c\ub10c\uc2a4\ub97c \uace8\ub790\uc5b4<\/p>\n

\ub10c \uc704\uc5d0 3\uac1c\uc911 \uc77c\uce58\ud558\ub294 \uac83\uc744 \uace0\ub974\uc9c0 \uc54a\uc558\uc5b4.<\/p>\n

\/\/ \ud0dc\uadf8\uc5d0 \uac00 \ubc18\ub4dc\uc2dc \uc788\uc744 \ud544\uc694\ub294 \uc5c6\ub2e4.<\/p>\n

8. \ud0dc\uadf8\ub294 \uc624\uc9c1 \ube48\uc758 \ud504\ub85c\ud37c\ud2f0 \uc124\uc815 \ubc16\uc5d0 \ud560 \uc218\uac00 \uc5c6\ub2e4.<\/p>\n

9. \ube48\uc758 \ud504\ub85c\ud37c\ud2f0 \uc124\uc815, \ub9f5\uc5d0 \uac12 \ud558\ub098\ub354 \ucd94\uac00, request\uc0dd\uc804 \ubc94\uc704\uc5d0 \uc18d\uc131 \ucd94\uac00 \ub4f1\uc744 \uc9c0\uc6d0\ud558\ub294 \ud0dc\uadf8<\/p>\n

\/\/ session \uc0dd\uc874 \ubc94\uc704\uc5d0 userLevel\uc774\ub77c\ub294 \uc774\ub984\uc73c \uc18d\uc131\uc5d0 Cowboy\ub77c\ub294 \uac12\uc744 \ub123\uc5b4\ub77c
\n\/\/ session \uc0dd\uc874\ubc94\uc704\uc5d0 userLevel\uc774 \uc5c6\ub2e4\uba74 \uc790\ub3d9 \uc0dd\uc131<\/p>\n

\/\/ \ub9cc\uc57d value\uac00 null \uc774\ub77c\uba74 Fido\uc5d0 \uae30\uc874\uc5d0 \uc5b4\ub5a4 \uac12\uc774 \ub4e4\uc5b4 \uc788\ub4e0 \uc0c1\uad00 \uc5c6\uc774 \uc0ad\uc81c\ub41c\ub2e4.<\/p>\n

sheriff, bartender, cowgirl<\/p>\n

10. \ud0dc\uadf8\ub294 \ube48 \ud504\ub85c\ud37c\ud2f0\uc640 \ub9f5 \uac12 \ub450\uac00\uc9c0 \uacbd\uc6b0\uc5d0\ub9cc \ub3d9\uc791\ud55c\ub2e4.
\n\ub9ac\uc2a4\ud2b8\ub098 \ubc30\uc5f4\uc5d0 \uac12\uc744 \ucd94\uac00 \ud558\uae30 \uc704\ud574\uc11c \uc0ac\uc6a9 \ud560\uc218 \uc5c6\ub2e4.<\/p>\n

\ud0dc\uadf8\uc758 target, property, value\uc758 \uc4f0\uc784<\/p>\n

\/\/ target\uc740 null \uc774 \ub420\uba74 \uc548\ub41c\ub2e4.
\n\/\/ target\uc774 \ub9f5\uc778 \uacbd\uc6b0 property\ub294 \ud0a4\uc774\ub984\uc774 \ub41c\ub2e4.
\n\/\/ target\uc774 \ube48\uc778 \uacbd\uc6b0 property\ub294 \ud504\ub85c\ud37c\ud2f0 \uc774\ub984\uc774 \ub41c\ub2e4.<\/p>\n

${foo.name} \/\/ \ubab8\uccb4 \uc548\uc5d0\ub294 \ubb38\uc790\uc5f4 \ub610\ub294 \ud45c\ud604\uc2dd\uc774 \ub4e4\uc5b4 \uac08\uc218 \uc788\ub2e4.<\/p>\n

\/\/ target\uc18d\uc131\uc5d0\ub294 \uac1d\uccb4(Object) \uac00 \ub4e4\uc5b4\uac00\uc57c \ud55c\ub2e4.<\/p>\n

11. \ud575\uc2ec \uc815\ub9ac
\n\ud558\ub098. \ud0dc\uadf8\uc5d0 var \uc640 target\uc744 \ub3d9\uc2dc\uc5d0 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\ub2e4.
\n\ub458. scope\ub294 \uc635\uc158\uc774\ub2e4. \ub514\ud3f4\ud2b8\ub294 page\uc0dd\uc874\ubc94\uc704\uc774\ub2e4.
\nEL\uacfc \ub2e4\ub974\uac8c page\uc0dd\uc874 \ubc94\uc704\ub9cc \ucc3e\uace0, request session \ub4f1 \ub354 \uae4a\uac8c \ucc3e\uc9c0 \uc54a\ub294\ub2e4.
\n\uc14b. value\uac00 \ub110\uc774\uba74 var\uc5d0 \uc788\ub294 \uc18d\uc131\uc774 \uc81c\uac70\ub41c\ub2e4.
\n\ub137. var \uc774\ub984\uc73c\ub85c \uc18d\uc131\uc774 \uc5c6\uc73c\uba74, \uc790\ub3d9\uc801\uc73c\ub85c \ub9cc\ub4e0\ub2e4. \ud558\uc9c0\ub9cc value\uac00 \ub110\uc774 \uc544\ub2d0 \ub54c\ub9cc \uadf8\ub807\ub2e4.
\n\ub2e4\uc12f. target\ud45c\ud604\uc2dd \uc774 \ub110\uc774\uba74 \ucee8\ud14c\uc774\ub108\uc5d0\uc11c \uc608\uc678\uc0ac\ud56d\uc744 \ub358\uc9c4\ub2e4
\n\uc5ec\uc12f. target\uc5d0\ub294 \uc2e4\uc81c \uac1d\uccb4\ub97c \ud45c\ud604\ud558\ub294 \ud45c\ud604\uc2dd\uc774 \ub4e4\uc5b4\uac00\uc57c \ud55c\ub2e4. \ube48\uc774\ub098 \ub9f5\uc758 id\uc774\ub984\uc744 \ub098\ud0c0\ub0b4\ub294 \ubb38\uc790\uc5f4\uc744 \uae30\uc785\ud558\uba74 \ub3d9\uc791\ud558\uc9c0 \uc54a\ub294\ub2e4. \uc989 target\uc740 \ube48\uc774\ub098 \ub9f5\uc758 \uc18d\uc131\uba85\uc774 \uc544\ub2c8\ub77c \uc18d\uc131 \uac1d\uccb4\uac00 \ub4e4\uc5b4\uac00\uc57c \ud55c\ub2e4.
\n\uc77c\uacf1. target \ud45c\ud604\uc2dd\uc774 \ube48\uc774\ub098 \ub9f5\uc774 \uc544\ub2c8\uba74 \ucee8\ud14c\uc774\ub108\ub294 \uc608\uc678\ub97c \ub358\uc9c4\ub2e4
\n\uc5ec\ub35f. target \ud45c\ud604\uc2dd\uc774 \ube48\uc774\uace0, \ud574\ub2f9 \ube48\uc5d0 property\uc5d0 \uba85\uae30\ub41c \uc774\ub984\uc73c\ub85c \ub41c \ud504\ub85c\ud37c\ud2f0\uac00 \uc5c6\ub2e4\uba74 \ucee8\ud14c\uc774\ub108\ub294 \uc608\uc678\uc0ac\ud56d\uc744 \ub358\uc9c4\ub2e4. EL\ud45c\ud604\uc2dd ${bean.notAProperty} \ub610\ud55c \uc608\uc678 \uc0ac\ud56d\uc744 \ub358\uc9c4\ub2e4.<\/p>\n

12. \/\/ \uc18d\uc131\uc744 \uc81c\uac70\ud558\ub294\ub370 \uc0ac\uc6a9\ub41c\ub2e4.<\/p>\n

\/\/ var\uc18d\uc131\uc5d0\ub294 \ubb38\uc790\uc5f4\uc774 \ub4e4\uc5b4\uac04\ub2e4. \uc5ec\uae30\uc5d0 \ud45c\ud604\uc2dd\uc744 \ub123\uc73c\uba74 \uc548\ub41c\ub2e4.
\n\/\/ scope\ub294 \uc635\uc158\uc774\ub2e4. page\uac00 \uae30\ubcf8\uc774\ub2e4.<\/p>\n

13. jstl\ud0dc\uadf8<\/p>\n

\/\/ \uc640 \ube44\uc2b7\ud558\uac8c \ud589\ub3d9\ud558\uc9c0\ub9cc. \ud6e8\uc52c \ub9c9\uac15\ud558\ub2e4.
\n\/\/ include \uc9c0\uc2dc\uc790\uc640 \ub294 \ud604\uc7ac \ucee8\ud14c\uc774\ub108 \uc548\uc758 \uc788\ub294 \uc790\uc6d0\ub9cc \ud3ec\ud568 \uac00\ub2a5\ud558\ub2e4
\n\/\/ \ud558\uc9c0\ub9cc jstl\ud0dc\uadf8\ub294 \uc678\ubd80 \uc790\uc6d0\ub3c4 \ud3ec\ud568\uc774 \uac00\ub2a5\ud558\ub2e4.<\/p>\n

14. \uc73c\ub85c \ub85c \ud3ec\ud568\ud560 \ud398\uc774\uc9c0\uc5d0 \ud30c\ub77c\ubbf8\ud130\ub97c \ub118\uae38 \uc218 \uc788\ub2e4.<\/p>\n

\uba54\uc778\ud398\uc774\uc9c0<\/p>\n

\ud3ec\ud568\ub420 \ud398\uc774\uc9c0(Header.jsp)
\n
\n${param.subTitle}<\/p>\n

15. jsp\uc5d0\uc11c URL \uc7ac \uc791\uc131\ud558\uae30(\ube0c\ub77c\uc6b0\uc800\uc5d0\uc11c \ucfe0\uae30 \uc0ac\uc6a9 \uc548\ud560 \ub54c \uc138\uc158 \uba39\uc774\uae30)<\/p>\n

\uc11c\ube14\ub9bf\uc5d0\uc11c URL \uc7ac\uc791\uc131
\npublic void doGet(HttpServletRequest request, HttpServletResponse response)
\nthrows Exception
\n{
\nresponse.setContentType(“text\/html”);
\nPrintWriter out = response.getWriter();
\nHttpSession session = request.getSession();<\/p>\n

out.println(“”);
\nout.println(“click<\/a>“);
\n\/\/ url \ub4a4\uc5d0 \uc138\uc158 id\ub97c \ucd94\uac00\ud55c\ub2e4.
\nout.println(“”);
\n}<\/p>\n

jsp\uc5d0\uc11c URL \uc7ac\uc791\uc131<\/p>\n

<a href=" >click here<\/a>
\n\/\/ value\uc5d0 \ub4e4\uc5b4 \uc788\ub294 \uc0c1\ub300 \uacbd\ub85c\uc5d0 jsessionid\ub97c \ucd94\uac00\ud55c\ub2e4. (\ucfe0\ud0a4\ub97c \uc0ac\uc6a9 \ud560\uc218 \uc5c6\uc744\ub54c)<\/p>\n

16. URL \uc778\ucf54\ub529 \ub514\ucf54\ub529\uc774 \uc65c \uc0ac\uc6a9\ub418\ub0d0? p 500
\nget\uba54\uc18c\ub4dc\ub9cc \ud574\ub2f9\ud558\ub294\uac00??
\nURL\ub85c \ub0a0\ub9b0 \ubb38\uc790\uc5f4\uc774 \ubd88\uc644\uc804 \ud560\ub54c \uc774\uac83\uc744 \ubcc0\ud658\ud574\uc11c \ub0a0\ub9b0\ub2e4?<\/p>\n

17. \ud0dc\uadf8\ub294 url\uc744 \uc7ac\uc791\uc131\ud558\uc9c0\ub9cc, url \uc778\ucf54\ub529\uc744 \ud558\uc9c4 \uc54a\ub294\ub2e4.<\/p>\n

the url using params is : ${inputURL}<\/p>\n

\uacb0\uacfc
\nthe url using params is : myAppinputCommnets.jsp?first=Crouching pixels&last=Hidden Cursor
\n\/\/ \uc9c8\uc758\uc5b4\ub85c \ub118\uc5b4\uac00\ub294 \ud30c\ub77c\ubbf8\ud130\ub294 \uc778\ucf54\ub529 \ub418\uc5b4\uc57c\ub9cc \ud55c\ub2e4. \uacf5\ubc31 \ubb38\uc790\ub294 \u201c+\u201d \ubcc0\ud658\ud574\uc11c \ub118\uaca8\uc57c \ud55c\ub2e4.<\/p>\n

18. \ud0dc\uadf8\ub85c url \uc778\ucf54\ub529 \ud558\uae30.<\/p>\n

\uacb0\uacfc
\nthe url using params is : myAppinputCommnets.jsp?first=Crouching+pixels&last=Hidden+Cursor<\/p>\n

18. \uc624\ub958\ud398\uc774\uc9c0 \uc124\uc815\ud558\ub294 \ubc29\ubc95<\/p>\n

\ud558\ub098. \uc624\ub958\ud398\uc774\uc9c0 \ub9cc\ub4e4\uae30 (errorPage.jsp)<\/p>\n

\/\/ \ucee8\ud14c\uc774\ub108\uc5d0\uac8c \ub0b4\uac00 \uc5d0\ub7ec\ud398\uc774\uc9c0 \ub77c\uace0 \uc54c\ub824\uc900\ub2e4.<\/p>\n

\ub458. \uc608\uc678 \uc0ac\ud56d \ubc1c\uc0dd\ud558\ub294 \ud398\uc774\uc9c0(\u201cbadPage.jsp\u201d)<\/p>\n

\/\/ \uc774 \ud398\uc774\uc9c0\uc5d0\uc11c \uc624\ub958\uac00 \ub098\uba74 errorPage.jsp\ub85c \uc790\ub3d9 \uc774\ub3d9\ud55c\ub2e4.
\n\/\/ \ud558\uc9c0\ub9cc \uc774\ub7f0 \ubc29\uc2dd\uc73c\ub85c \uc5d0\ub7ec \ud398\uc774\uc9c0\ub97c \ud45c\uc2dc\ud55c\ub2e4\uba74 jsp \ud398\uc774\uc9c0\ub9c8\ub2e4 \ub2e4 \uc774\ub7f0 \uc9dc\uc99d\ub098\ub294 \uc124\uc815\uc744 \ub178\uac00\ub2e4\ub85c \ud574\uc918\uc57c \ud55c\ub2e4.<\/p>\n

19. DD\uc5d0 \uc624\ub958\ud398\uc774\uc9c0\ub97c \uc124\uc815 \ud560\uc218 \uc788\ub2e4.<\/p>\n

\ubaa8\ub450 \ub2e4 \uc801\uc6a9\ub418\ub294(\ub514\ud3f4\ud2b8) \uc624\ub958 \ud398\uc774\uc9c0 \uc120\uc5b8
\n\/\/ \uc544\ub798\uc640 \uac19\uc774 \uc120\uc5b8\ud558\uba74 jsp\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc6f9 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0 \uc788\ub294 \ubaa8\ub4e0 \ud398\uc774\uc9c0\uc5d0 \uc801\uc694\ub41c\ub2e4. \uac1c\ubcc4 jsp\uc5d0\uc11c page \uc9c0\uc2dc\uc790 errorPage \uc18d\uc131\uc744 \uba85\uc2dc\ud558\uba74 \uc774 \uac12\uc744 \uc7ac\uc815\uc758 \ud560\uc218 \uc788\ub2e4.<\/p>\n

java.lang.throwable
\n\/errorPage.jsp<\/p>\n

\ud2b9\uc815 \uc608\uc678\uc0ac\ud56d\uc5d0 \ub300\ud55c \uc624\ub958 \ud398\uc774\uc9c0 \uc120\uc5b8<\/p>\n

java.lang.ArithmeticException
\n\/arithmeticErrorPage.jsp<\/p>\n

\/\/ \uc544\ub9ac\uba54\ud2f1 \uc608\uc678\uac00 \ubc1c\uc0dd\ud558\uba74 \ub3d9\uc791\ud558\ub294 \uc624\ub958\ud398\uc774\uc9c0 \uc124\uc815<\/p>\n

Http\uc0c1\ud0dc \ucf54\ub4dc\uc5d0 \ub530\ub77c \ub2e4\ub974\uac8c \uc624\ub958\ud398\uc774\uc9c0 \uc120\uc5b8<\/p>\n

404
\n\/notFoundPage.jsp<\/p>\n

\/\/ 404 \uc5d0\ub7ec\uc77c \uacbd\uc6b0\uc5d0\ub9cc \ub3d9\uc791\ud558\ub294 \uc5d0\ub7ec\ud398\uc774\uc9c0
\n\/\/ \ud0dc\uadf8\uc758 \uacbd\ub85c\ub294 \uc6f9 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158 \ub8e8\ud2b8 \/ \ucee8\ud14d\uc2a4\ud2b8\ub85c\ubd80\ud130 \uc2dc\uc791\ud574\uc57c \ud55c\ub2e4.
\n\/\/ \ubc18\ub4dc\uc2dc \ucc98\uc74c\uc774 \/ \ub85c \uc2dc\uc791\ud574\uc57c \ud55c\ub2e4.<\/p>\n

20. \uc624\ub958\ud398\uc774\uc9c0\ub294 \uc608\uc678\uc0ac\ud56d\uc744 \ucc98\ub9ac\ud558\uc9c0\ub9cc \uc774\ub3c4 \uc5c4\uc5f0\ud788 jsp \uc774\ub2e4. \ud558\uc9c0\ub9cc \ub2e4\ub978 jsp \uc640 \ub2ec\ub9ac \ucee8\ud14c\uc774\ub108\uc5d0\uac8c \ubd80\uc5ec\ubc1b\uc740 \ub0b4\uc7a5 \uac1d\uccb4\uac00 \ud558\ub098 \ub354 \uc788\ub2e4 exception\uc774\ub2e4.<\/p>\n

${pageContext.exception} \/\/ error jsp \ud398\uc774\uc9c0\ub9cc java\ucc98\ub7fc exception\uac1d\uccb4\uc5d0 \uc811\uadfc\ud560\uc218 \uc788\ub2e4.<\/p>\n

21. JSP\ud398\uc774\uc9c0\uc5d0\uc11c \uc9c1\uc811 \uc608\uc678\ub97c \uc7a1\uace0 \uc2f6\uc744 \ub54c (java\uc758 try – catch \ucc98\ub7fc) \ud0dc\uadf8\ub97c \uc0ac\uc6a9\ud558\uba74 \ub41c\ub2e4.<\/p>\n

aaaaaaa<\/p>\n

bbbbbb<\/p>\n

22. \uc0ac\uc6a9 \ud588\uc9c0\ub9cc \uc774 \ud398\uc774\uc9c0\ub294 error \ud398\uc774\uc9c0\uac00 \uc544\ub2c8\ubbc0\ub85c exception \uc811\uadfc\ud558\ub294\ub370\uc5d0 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud558\ub294\ub370….<\/p>\n

aaaaaaa
\n \/\/page \uc0dd\uc874\ubc94\uc704\uc5d0 myException\uc774\ub77c\ub294 \uc774\ub984\uc758 \uc18d\uc131\uc744 \ub9cc\ub4e4\uace0
\n \/\/ \uc608\uc678\uac00 \ubc1c\ud589\ud558\uba74 \uc774 \uc18d\uc131\uc5d0 exception \uac1d\uccb4\ub97c \uc800\uc7a5\ud55c\ub2e4.<\/p>\n

bbbbbb<\/p>\n

${myException.message}<\/p>\n

23. TLD\ud30c\uc77c\uc740 \ucee4\uc2a4\ud140\ud0dc\uadf8\uc640 EL\ud568\uc218\uc5d0\uc11c \uc0ac\uc6a9\ub41c\ub2e4.<\/p>\n

24. \ucee4\uc2a4\ud140 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc704\ud55c TLD\ud30c\uc77c<\/p>\n

25. TLD\ud30c\uc77c\uc5d0 \ucee4\uc2a4\ud15c \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\uae30 \uc704\ud55c \uc124\uc815\ub4e4\uc774 \uae30\uc785\ub41c\ub2e4.
\np 511<\/p>\n

26. \ucee4\uc2a4\ud140 \ud0dc\ud06c \ud578\ub4e4\ub7ec = \ucee4\uc2a4\ud140 \ud0dc\uadf8\uc5d0\uc11c \ud638\ub8f0\ud558\ub294 \ud074\ub798\uc2a4
\n\/\/ \ucee4\uc2a4\ud140 \ud14c\uadf8\uac00 \ud638\ucd9c\ud55c \ud074\ub798\uc2a4\ub294 SimpleTagSupport \ud074\ub798\uc2a4\ub97c \uc0c1\uc18d\ubc1b\ub294\ub2e4
\n\/\/ doTag() \ub9e4\uc18c\ub4dc\ub97c \uc81c\uc815\uc758 \ud574\uc57c \ud55c\ub2e4. jsp \uac00 \ud0dc\uadf8\ub97c \uc2e4\ud589\ud558\uba74 , \ucee8\ud14c\uc774\ub108\ub294 toTag()\uba54\uc18c\ub4dc\ub97c \ud638\ucd9c\ud55c\ub2e4.
\n\/\/ \ud0dc\uadf8\uc5d0\uc11c \uc2e4\ud589\ub418\ub294 \ud074\ub798\uc2a4\ub294 \uba64\ubc84 \ubcc0\uc218 \uba64\ubc84 \uba54\uc18c\ub4dc\ub97c \uac00\uc9c8\uc218 \uc788\uc73c\uba70 \uc790\ubc14\ube48 \uaddc\uc57d\uc744 \ub530\ub77c\uc57c \ud55c\ub2e4.<\/p>\n

27. \ucee4\uc2a4\ud140 \ud0dc\uadf8\ub3c4 \ud074\ub798\uc2a4\ub97c \ud638\ucd9c\ud558\ub294 \uac83\uc740 EL \ud391\uc158\uacfc \uac19\uc73c\ub098 EL\ud391\uc158\uc740 \uc18d\uc131\uc774 \uc5c6\ub294 public static \uba54\uc18c\ub4dc\ub9cc \ud638\ucd9c\ud560\uc218 \uc788\ub2e4. \ub530\ub77c\uc11c \ucee4\uc2a4\ud140 \ud0dc\uadf8\uac00 \ubb54\uac00 \uc880\ub354 \uac15\ub825\ud55c \uae30\ub2a5\uc758 \ud074\ub798\uc2a4 \uba54\uc18c\ub4dc \ud638\ucd9c\uc774 \uac00\ub2a5\ud558\ub2e4.<\/p>\n

28. \ucee8\ud14c\uc774\ub108\ub294 tld\uc5d0 \uc788\ub294 \uc640 taglib \uc9c0\uc2dc\uc790\uc758 uri \uac12\uc744 \ube44\uad50\ud569\ub2c8\ub2e4.
\nuri\uac00 \uc2e4\uc81c \ud0dc\uadf8 \ud578\ub4e4\ub7ec\uac00 \uc788\ub294 \uc704\uce58\ub97c \ub098\ud0c0\ub0bc \ud544\uc694\ub294 \uc5c6\ub2e4.
\n\uadf8\ub0e5 \ud0dc\uadf8\ub97c \uad6c\ubcc4\ud558\uae30 \uc704\ud55c \uace0\uc720\uc758 \uc774\ub984\uc744 \uc124\uc815\ud558\uae30 \uc704\ud55c \uac83\uc774 uri\uc774\ub2e4.
\n[\ucd9c\ucc98] HeadFirst Servlet_jsp 9\uc7a5 : JSTL \uc0ac\uc6a9\uacfc \ucee4\uc2a4\ud140 \ud0dc\uadf8|\uc791\uc131\uc790 kimgas2000<\/p>\n","protected":false},"excerpt":{"rendered":"

headfirst 9\uc7a5 jstl \uc0ac\uc6a9\ud558\uae30: \ub9c9\uac15\ud55c \ucee4\uc2a4\ud140 \ud0dc\uadf8 1. JSTL(JSP \ud45c\uc900 \ud0dc\uadf8 \ub77c\uc774\ube0c\ub7ec\ub9ac) \uc744 \uc124\uce58 \ubc29\ubc95 \/\/ JSTL\uc744 \uc0ac\uc6a9\ud558\uae30 \uc704\ud574\uc11c\ub294 jstl.jar \uc640 standard.jar \ud30c\uc77c\uc774 \ud544\uc694\ud558\ub2e4. \ud1b0\ucea3\uc5d0\uc81c \ud30c\uc77c\uc5d0 \uc788\ub294 webapps\/jsp-examples\/WEB-INF\/lib\/jstl,jar webapps\/jsp-examples\/lib\/standard,jar \ub97c… <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/posts\/446"}],"collection":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=446"}],"version-history":[{"count":0,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=\/wp\/v2\/posts\/446\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.goorigo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}