[Spring Cloud] - 5. Zuul Gateway๋ฅผ ์ด์šฉํ•œ Filtering

์ด๋ฒˆ ํฌ์ŠคํŠธ์—์„œ๋Š” Routing์— ์ด์–ด์„œ Zuul Gateway๋ฅผ ์ด์šฉํ•œ Filtering์— ๋Œ€ํ•ด์„œ ์ด์•ผ๊ธฐํ•ด๋ณด๋„๋ก ํ•˜๊ฒ ์Šต๋‹ˆ๋‹ค. Filtering Spring Boot์—์„œ ํ•„ํ„ฐ๋ง์„ ์‚ฌ์šฉํ•˜๋Š” ๊ฒฝ์šฐ๋Š” PreFilter์™€ ๊ฐ™์€ ์—”๋“œํฌ์ธํŠธ์˜ ๋ณด์•ˆ ๋“ฑ์—์„œ ์‚ฌ์šฉ๋ฉ๋‹ˆ๋‹ค. ์ด ํ•„ํ„ฐ๋ง์„ ์ด์šฉํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” Spring Security์—์„œ ์ œ๊ณตํ•˜๋Š” JWT ๋“ฑ์˜ ๋ณด์•ˆ ์ˆ˜๋‹จ์„ ์‚ฌ์šฉํ•˜์—ฌ ์ธ์ฆ์„ ๋ฐ›๊ณ , ์—”๋“œํฌ์ธํŠธ์— ์ ‘๊ทผํ•˜๋Š” ๋ฐฉ์‹์ด์ฃ . Zuul Gateway์—์„œ๋„ ์—”๋“œํฌ์ธํŠธ์˜ ๋ณด์•ˆ์„ ์ ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ํ•„ํ„ฐ๋ง ๊ธฐ๋Šฅ์„ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค. ์œ„ ์•„ํ‚คํ…์ฒ˜๋Š” Zuul Gateway์˜ ์ฝ”์–ด๋ฅผ ๊ทธ๋ฆฐ ์•„ํ‚คํ…์ฒ˜์ž…๋‹ˆ๋‹ค. Zuul Servlet์„ ํ†ตํ•ด ๋“ค์–ด์˜ค๋Š” ์š”์ฒญ์„ Routing ํ•˜๊ฒŒ ๋˜๋Š”๋ฐ์š”. ๊ทธ๋ฆฌ๊ณ , ๊ทธ ๋ฐ‘๋‹จ์—๋Š” ZuulFilter Runner๊ฐ€ ์žˆ์–ด์„œ ์—”๋“œ..