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[JavaScript] ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ์—์„œ Reflection ์‚ฌ์šฉํ•˜๊ธฐ
... 2021. 9. 13. 15:06

์ž๋ฐ”์—์„œ ๋ณ€์ˆ˜๋ช…์œผ๋กœ ํด๋ž˜์Šค๋ฅผ ์ธ์Šคํ„ด์Šคํ™” ํ•˜๋Š” ๋ฐฉ๋ฒ•์ด ์žˆ์Šต๋‹ˆ๋‹ค. ๋ฐฉ๋ฒ• 1-์ธ์ˆ˜๋Š” ์—†๊ณ  ์ƒ์„ฑ์ž๋งŒ ์žˆ๋Š” ํด๋ž˜์Šค์—๋งŒ ํ•ด๋‹น ํด๋ž˜์Šค์— ์ธ์ˆ˜๊ฐ€์—†๋Š” ์ƒ์„ฑ์ž๊ฐ€์žˆ๋Š” ๊ฒฝ์šฐ ๋ฉ”์„œ๋“œ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ Class๊ฐ์ฒด๋ฅผ ๊ฐ€์ ธ์˜ค๊ณ ์ด ๋ฉ”์„œ๋“œ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์ธ์Šคํ„ด์Šค๋ฅผ ๋งŒ๋“ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. Class domainClass = Class.forName("com.femarket.domain." + domainName); Object domain = domainClass.newInstance(); ๋ฐฉ๋ฒ• 2 ํด๋ž˜์Šค์— ์ธ์ˆ˜๊ฐ€์—†๋Š” ์ƒ์„ฑ์ž๊ฐ€์—†๋Š” ๊ฒฝ์šฐ์—๋„ ์ž‘๋™ํ•˜๋Š” ๋” ์•ˆ์ „ํ•œ ๋ฐฉ๋ฒ•์€ ํด๋ž˜์Šค ๊ฐœ์ฒด๋ฅผ ์ฟผ๋ฆฌํ•˜์—ฌ ํ•ด๋‹น Constructor๊ฐœ์ฒด ๋ฅผ ๊ฐ€์ ธ์˜ค๊ณ ์ด ๊ฐœ์ฒด์— ๋Œ€ํ•œ newInstance()๋ฉ”์„œ๋“œ๋ฅผ ํ˜ธ์ถœํ•˜๋Š” ๊ฒƒ์ž…๋‹ˆ๋‹ค. Class clazz = Class.forName("..

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[Elastic Search+Java] ์‚ฌ์šฉ์ž ์ธ์ฆ ๊ตฌํ˜„ํ•˜๊ธฐ Basic Authentication
... 2021. 8. 19. 14:50

์ € ๊ฐ™์€ ๊ฒฝ์šฐ Elasitc Search๋ฅผ ์‚ฌ์šฉํ•  ๋•Œ ์ง์ ‘ API ๋ฌธ์„œ ๋ณด๊ณ  ์ž๋ฐ” ์ฝ”๋“œ๋กœ ์ž‘์„ฑํ•ฉ๋‹ˆ๋‹ค. ์•„๋ž˜ ๋งํฌ๋Š” Elasitc Search ๊ณต์‹ API Basic Authentication ์ž…๋‹ˆ๋‹ค. Basic authentication | Java REST Client [7.14] | Elastic Configuring basic authentication can be done by providing an HttpClientConfigCallback while building the RestClient through its builder. The interface has one method that receives an instance of org.apache.http.impl.nio.client.Ht..

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[Java] equals() == ์ฐจ์ด ์‰ฝ๊ฒŒ ์ดํ•ดํ•˜๊ธฐ
... 2020. 12. 31. 18:30

"์ž๋ฐ”๋ฅผ ์ •๋ง ๋ญ๋ž„๊นŒ.. ์œก๊ตฐ์‚ฌ๊ด€ํ•™๊ต ๋‚˜์˜ค๋Š” ์ค‘๋Œ€์žฅ ๊ฐ™์€ ๋Š๋‚Œ์ด๋‹ค.. ์—„์ฒญ ๋Œ€๋‹จํ•˜์ง€๋งŒ ์—„๊ฒฉํ•ด์„œ ์‹ซ๋‹ค๊ณ  ํ•ด์•ผํ• ๊นŒ.. ๋ถ„๋ช… ๋ณด์ด๊ธฐ์—” ๊ฐ™์•„๋ณด์ด์ง€๋งŒ ๋‹ค๋ฅธ๊ฒŒ ๋„ˆ๋ฌด ๋งŽ๋‹ค. ์Šคํฌ๋ฆฝํŠธ ์–ธ์–ด๊ฐ€ ๊ด€๋Œ€ํ•œ๊ฒƒ์— ๋น„ํ•ด ์ž๋ฐ”๋Š” ์ƒ๋‹นํžˆ ์—„๊ฒฉํ•˜๋‹ค. ์—„๊ฒฉํ•œ ๊ณณ์—์„œ ์˜ค๋Š” ์žฅ์ ์€ ๋ถ„๋ช…ํ•˜์ง€๋งŒ ๊ทธ๋งŒํผ ๊ฐœ๋ฐœ์ž๋“ค์„ ๊ฐ€๋” ๊ดด๋กญํžŒ๋‹ค." ๊ทธ๋ž˜์„œ ์ด๋ฒˆ ๊ธ€์—๋Š” ์ €๋ฅผ ์—„์ฒญ๋‚˜๊ฒŒ ๊ดด๋กญํ˜”๋˜ equals() ์™€ == ์˜ ์ฐจ์ด๋ฅผ ์•Œ์•„๋ณด๋ ค๊ณ  ํ•ฉ๋‹ˆ๋‹ค. ๊ธ€์— ์•ž์„œ ์ดํ•ดํ•˜๋Š”๋ฐ ํฐ ๋„์›€์„ ์ฃผ์‹  ๋ฐ• ๋ณธ๋ถ€์žฅ๋‹˜๊ป˜ ๊ฐ์‚ฌ์˜ ์ธ์‚ฌ๋ฅผ ๋“œ๋ฆฝ๋‹ˆ๋‹ค!! l String ๋ณ€์ˆ˜๋ฅผ ์ƒ์„ฑํ•  ๋•Œ String์€ int, float, double ๋“ฑ๊ณผ ๋‹ค๋ฅด๊ฒŒ ์ž๋ฐ”์—์„œ๋Š” ํด๋ž˜์Šค๋กœ ํ†ตํ•ฉ๋‹ˆ๋‹ค. ํด๋ž˜์Šค์ด๊ธฐ ๋•Œ๋ฌธ์— ๋‹ค๋ฅธ ๋ฐ์ดํ„ฐํ˜•๊ณผ ๋‹ค๋ฅด๊ฒŒ ๊ฐ์ฒด๋กœ๋„ ์ƒ์„ฑ์ด ๊ฐ€๋Šฅํ•ฉ๋‹ˆ๋‹ค. ๋ฆฌํ„ฐ๋Ÿด์„ ์ด์šฉํ•˜์—ฌ String ์ƒ์„ฑ new ์—ฐ์‚ฐ์ž..

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