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๐Ÿš€ 2๋‹จ๊ณ„ - ์ˆ˜๊ฐ•์‹ ์ฒญ(๋„๋ฉ”์ธ ๋ชจ๋ธ) #691

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@nno0obb nno0obb commented Apr 8, 2025

  • ์ œ๊ฐ€ ์ž˜ ์ดํ•ดํ•˜์ง€ ๋ชปํ•œ ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค...
  • ์š”๊ตฌ์‚ฌํ•ญ์— ๋งž์ถฐ์„œ ํ…Œ์ŠคํŠธ๊ฐ€ ๋ชจ๋‘ ์—†๋Š” ๊ฒƒ์ด ๋งž์„๊นŒ์š”?
  • ํ•„์š”ํ•˜๋ฉด Repository ์ฝ”๋“œ๋„ ์ˆ˜์ •ํ•˜๋Š” ๊ฒƒ์ด ๋งž๋Š” ๊ฑธ๊นŒ์š”?
  • ๋น„์ฆˆ๋‹ˆ์Šค ๋กœ์ง์„ ์ œ ๋‚˜๋ฆ„๋Œ€๋กœ ํด๋ž˜์Šค์— ๋„ฃ์–ด๋ณด์•˜๋Š”๋ฐ... ๊ดœ์ฐฎ์€ ๊ฑด์ง€ ๋ชจ๋ฅด๊ฒ ์Šต๋‹ˆ๋‹ค.

CourseCoverImage ๋Š” ์ž์ฒด์ ์œผ๋กœ ์ด๋ฏธ์ง€๋ฅผ ๋„ฃ์–ด์„œ ํ…Œ์ŠคํŠธ ํ•˜๋Š” ๊ฒƒ์ด ๋งž์„๊นŒ์š”?
"Image" ๊ด€๋ จ ์ž๋ฐ” ํด๋ž˜์Šค๊นŒ์ง€ ๊ณต๋ถ€ํ•˜๋Š” ๊ฒƒ์„ ์˜๋„ํ•˜์‹  ๊ฒƒ์ธ์ง€ ๊ถ๊ธˆํ•ฉ๋‹ˆ๋‹ค.

NsUser ์— "func::registerCourse" ๋ฅผ ๋„ฃ์—ˆ๋Š”๋ฐ ์ด ๋ถ€๋ถ„์€ ์–ด๋–ป๊ฒŒ ํ…Œ์ŠคํŠธ๋ฅผ ํ•ด์•ผํ•˜๋Š” ๊ฒƒ์ธ๊ฐ€์š”?
์ง์ ‘ ๊ฐ•์˜, ์œ ์ €, ๋ชจ๋‘ ๋งŒ๋“ค๋ฉด ๋˜๋Š” ๊ฒƒ์ผ๊นŒ์š”?
์ด๋ฅผ ์œ„ํ•ด AttendeeList ๊ฐ€ ๊ผญ ํ•„์š”ํ•ด์ง„๊ฒƒ ๊ฐ™์€๋ฐ ์š”๊ตฌ์‚ฌํ•ญ์—๋Š” ๋ช…์‹œ๋˜์–ด ์žˆ์ง€ ์•Š์ง€๋งŒ ๋‚˜๋ฆ„๋Œ€๋กœ ๊ตฌํ˜„ํ•˜๋Š” ๊ฒƒ๊นŒ์ง€๊ฐ€ ์ด๋ฒˆ ์Šคํ…์˜ ์˜๋„์ผ๊นŒ์š”?

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์•ˆ๋…•ํ•˜์„ธ์š” ํ™๊ท ๋‹˜ ๐Ÿ˜„

๋ช‡๊ฐ€์ง€ ์ฝ”๋ฉ˜ํŠธ ๋‚จ๊ฒจ๋‘์—ˆ์œผ๋‹ˆ ํ™•์ธ๋ถ€ํƒ๋“œ๋ ค์š” :)

๊ถ๊ธˆํ•˜๊ฑฐ๋‚˜ ๊ณ ๋ฏผ์ด ๋˜๋Š” ๋ถ€๋ถ„์ด ์žˆ์œผ์‹œ๋‹ค๋ฉด ์–ธ์ œ๋“  pr ์ฝ”๋ฉ˜ํŠธ ๋˜๋Š” dm์œผ๋กœ ์š”์ฒญ ๋ถ€ํƒ๋“œ๋ฆฝ๋‹ˆ๋‹ค.
๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค ๐Ÿ™‡โ€โ™‚๏ธ

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ํ…Œ์ŠคํŠธ ์ถ”๊ฐ€๋‚˜ ์ˆ˜์ •์€ ์ž์œ ๋กญ๊ฒŒ ์ง„ํ–‰ํ•ด์ฃผ์…”๋„ ๋ฉ๋‹ˆ๋‹ค ๐Ÿ˜„

org.gradle.java.home=/opt/homebrew/Cellar/openjdk@11/11.0.26/libexec/openjdk.jdk/Contents/Home
# ๋„ต, ์œ„ ์„ค์ •์€ IDE ์—์„œ Java ์‹คํ–‰ ํ™˜๊ฒฝ์„ ์œ„ํ•ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.

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์ด๊ฑธ ์„ค์ •ํ•˜๊ฒŒ๋˜๋ฉด gradle์„ ์‹คํ–‰ํ•˜๋Š” ๊ณผ์ •์—์„œ ํ•ด๋‹น path๊ฐ€ ๋น„์–ด์žˆ๋Š” ๋‹ค๋ฅธ ์‚ฌ๋žŒ์˜ ๊ฒฝ์šฐ์—๋Š” ์‹คํ–‰์ด ๋ถˆ๊ฐ€๋Šฅํ•  ๊ฒƒ ๊ฐ™์•„์š”. ์‹ค์ œ ์„œ๋ฒ„์—์„œ๋„ ๋ˆ„๋ฝ๋˜๋ฉด ์‹คํ–‰์ด ๋˜์ง€ ์•Š์„ ๊ฒƒ์ด๊ตฌ์š”.

์–ดํ”Œ๋ฆฌ์ผ€์ด์…˜ ์‹คํ–‰๊ณผ ๊ด€๋ จ๋œ gradle์„ ์„ค์ •ํ• ๋•Œ๋Š” ๊ฐ€๋Šฅํ•˜๋ฉด ํŠน์ • path์— ์˜์กดํ•˜์ง€ ์•Š๋Š” ๊ฒƒ์ด ์ข‹์Šต๋‹ˆ๋‹ค :)


import javax.imageio.ImageIO;

public class CourseCoverImage {

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CourseCoverImage ๋Š” ์ž์ฒด์ ์œผ๋กœ ์ด๋ฏธ์ง€๋ฅผ ๋„ฃ์–ด์„œ ํ…Œ์ŠคํŠธ ํ•˜๋Š” ๊ฒƒ์ด ๋งž์„๊นŒ์š”?
"Image" ๊ด€๋ จ ์ž๋ฐ” ํด๋ž˜์Šค๊นŒ์ง€ ๊ณต๋ถ€ํ•˜๋Š” ๊ฒƒ์„ ์˜๋„ํ•˜์‹  ๊ฒƒ์ธ์ง€ ๊ถ๊ธˆํ•ฉ๋‹ˆ๋‹ค.

์ž๋ฐ”ํด๋ž˜์Šค๋ฅผ ํ•™์Šตํ•  ์ •๋„๊นŒ์ง€๋Š” ํ•„์š”์—†๊ณ , ์š”๊ตฌ๋œ ๋‚ด์šฉ์˜ ์ด๋ฏธ์ง€ ๊ด€๋ จ๋œ ๋„๋ฉ”์ธ๋กœ์ง์„ ์ฒ˜๋ฆฌํ•˜๋Š” ์ •๋„๋ฉด ์ถฉ๋ถ„ํ•  ๊ฒƒ ๊ฐ™์Šต๋‹ˆ๋‹ค ๐Ÿ˜„

@@ -124,6 +128,22 @@ public boolean isGuestUser() {
}
}

public void registerCourse(Course course) {

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NsUser ์— "func::registerCourse" ๋ฅผ ๋„ฃ์—ˆ๋Š”๋ฐ ์ด ๋ถ€๋ถ„์€ ์–ด๋–ป๊ฒŒ ํ…Œ์ŠคํŠธ๋ฅผ ํ•ด์•ผํ•˜๋Š” ๊ฒƒ์ธ๊ฐ€์š”?

๋ง์”€ํ•ด์ฃผ์‹  ๋‚ด์šฉ์„ ์ดํ•ด๋ชปํ–ˆ์–ด์š”. NsUser.registerCourse๋ฅผ ํ…Œ์ŠคํŠธํ•˜๋Š” ๊ฒƒ์€ NsUserTest์—์„œ ๋‹จ์œ„ ํ…Œ์ŠคํŠธ๋ฅผ ๋งŒ๋“ค์–ด๋ณด๋ฉด ๋˜๋Š” ๊ฒƒ ์•„๋‹๊นŒ์š”?

์กฐ๊ธˆ ๋” ์ž์„ธํ•˜๊ฒŒ ๋ง์”€ํ•ด์ฃผ์‹œ๋ฉด ํ™•์ธํ•ด๋ณด๊ฒ ์Šต๋‹ˆ๋‹ค ๐Ÿ˜„


import nextstep.users.domain.NsUser;

public class AttendeeList {

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์ด๋ฅผ ์œ„ํ•ด AttendeeList ๊ฐ€ ๊ผญ ํ•„์š”ํ•ด์ง„๊ฒƒ ๊ฐ™์€๋ฐ ์š”๊ตฌ์‚ฌํ•ญ์—๋Š” ๋ช…์‹œ๋˜์–ด ์žˆ์ง€ ์•Š์ง€๋งŒ ๋‚˜๋ฆ„๋Œ€๋กœ ๊ตฌํ˜„ํ•˜๋Š” ๊ฒƒ๊นŒ์ง€๊ฐ€ ์ด๋ฒˆ ์Šคํ…์˜ ์˜๋„์ผ๊นŒ์š”?

์š”๊ตฌ์‚ฌํ•ญ์—๋Š” ์–ด๋–ค ๊ฐ์ฒด๋ฅผ ๋งŒ๋“ค์–ด๋ผ๋ผ๋Š” ๊ตฌํ˜„๋‚ด์šฉ์€ ๋ช…์‹œํ•˜์ง€ ์•Š๊ธฐ ๋•Œ๋ฌธ์— ํ™๊ท ๋‹˜์ด ์ƒ๊ฐํ•ด์ฃผ์‹œ๋Š” ๋ฐฉํ–ฅ๋Œ€๋กœ ๊ตฌํ˜„์„ ํ•ด์ฃผ์‹œ๋ฉด ๋˜์–ด์š” :)

Comment on lines +135 to +137
if (course.getAttendees().size() >= course.getMaxAttendees()) {
throw new IllegalArgumentException("๊ฐ•์˜ ์ˆ˜๊ฐ• ์ธ์›์ด ์ดˆ๊ณผ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.");
}

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์œ ๋ฃŒ ๊ฐ•์˜๋Š” ๊ฐ•์˜ ์ตœ๋Œ€ ์ˆ˜๊ฐ• ์ธ์›์„ ์ดˆ๊ณผํ•  ์ˆ˜ ์—†๋‹ค.

๋ˆ„๊ฐ€ ์ˆ˜๊ฐ•๋“ฑ๋ก์— ๋Œ€ํ•œ ๊ฒƒ์„ ๊ฐ€์ ธ๊ฐ€๋А๋ƒ์— ๋Œ€ํ•œ ๊ฒƒ์„ ๊ณ ๋ฏผํ•ด๋ณด๋ฉด ์ข‹์„ ๊ฒƒ ๊ฐ™์•„์š” ๐Ÿ˜„

"์ˆ˜๊ฐ•"์ด๋ผ๋Š” ๊ฒƒ์€ ๊ฐ•์˜์— ํšŒ์›์ด ๋“ค์–ด๊ฐ€๋Š” ๊ฒƒ์ด๋ฏ€๋กœ Course์—์„œ ์ˆ˜๊ฐ•ํ•˜๊ณ  ์žˆ๋Š” ์ธ์›์„ ๋“ค๊ณ  ์žˆ๋Š” ๊ฒƒ์ด ๋” ์ž์—ฐ์Šค๋Ÿฝ์ง€ ์•Š์„๊นŒ์š”? ๊ทธ๋Ÿผ Course.๋“ฑ๋ก()์—์„œ๋Š” ์œ ๋ฃŒ๊ฐ•์˜์ธ ๊ฒฝ์šฐ ์ด๋ฏธ ์ˆ˜๊ฐ•์ตœ๋Œ€์ธ์›์ด ๊ฐ€๋“์ฐฌ ์ผ€์ด์Šค์—์„œ ์˜ˆ์™ธ๋ฅผ ํ„ฐํŠธ๋ฆฌ๋„๋ก ํ•ด์ค„ ์ˆ˜ ์žˆ์„ ๊ฒƒ ๊ฐ™๊ตฌ์š” :)

Comment on lines +132 to +134
if (course.getCourseStatus() == CourseStatus.PREPARING) {
throw new IllegalArgumentException("๊ฐ•์˜๊ฐ€ ์ค€๋น„์ค‘์ž…๋‹ˆ๋‹ค.");
}

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์ด๋Ÿฐ ๋กœ์ง๋„ Course์— ๋“ค์–ด๊ฐ€๋ณด๋ฉด ์ข‹์„ ๊ฒƒ ๊ฐ™์•„์š”!

๊ฐ•์˜์— ๋Œ€ํ•œ ๊ฒ€์ฆ ์ฑ…์ž„ ์ž์ฒด๋ฅผ Course์— ๋„ฃ์–ด์ฃผ๋Š” ๊ฑธ ๊ณ ๋ คํ•ด๋ณด์‹œ๋ฉด ์ข‹๊ฒ ์Šต๋‹ˆ๋‹ค ๐Ÿ˜„

Comment on lines +18 to +21
private String imageFilePath;
private File imageFile;

private BufferedImage courseCoverImageData;

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Suggested change
private String imageFilePath;
private File imageFile;
private BufferedImage courseCoverImageData;
private final String imageFilePath;
private final File imageFile;
private final BufferedImage courseCoverImageData;

๋ถˆ๋ณ€ํ•  ์ˆ˜ ์žˆ๊ฒ ๋„ค์š”!

}

if (courseCoverImageData.getWidth() < MIN_WIDTH || courseCoverImageData.getHeight() < MIN_HEIGHT) {
throw new IllegalArgumentException("๊ฐ•์˜ ์ปค๋ฒ„ ์ด๋ฏธ์ง€๋Š” ์ตœ์†Œ 300x200 ํ”ฝ์…€ ์ด์ƒ์ด์–ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.");

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์ด๋ฏธ์ง€ ํฌ๊ธฐ๋Š” 1MB ์ดํ•˜์—ฌ์•ผ ํ•œ๋‹ค.

๋„ ์ถ”๊ฐ€๋˜๋ฉด ์ข‹๊ฒ ๋„ค์š” ๐Ÿ˜„

imageFilePath = DEFAULT_IMAGE_FILE_PATH;
}

if (Arrays.stream(SUPPORTED_IMAGE_EXTENSIONS).noneMatch(imageFilePath::endsWith)) {

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๐Ÿ‘

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