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Spring boot20

[JAVA] Map to Object, Object to Map Object๋ฅผ Map์œผ๋กœ ๋ณ€ํ™˜, Map์„ Object๋กœ ๋ณ€ํ™˜ํ•˜๋Š” Util ์‚ฌ์šฉ ๊ฐ์ฒด PropertyDescriptor Method Object method invoke (setMethod) private static void invokeMethodSiently(Object obj, Method m, Object val) { try { m.invoke(obj, val); } catch (Exception ex) { LOGGER.error(ex.getMessage(), ex); } } Object method invoke (getMethod) private static Object invokeGetMethod(Object o, Method m) { Object obj = new Object(); try { .. 2020. 11. 19.
[JAVA] Excel Download - ์ฝ๊ธฐ, ์ˆ˜์ •, ๋‹ค์šด๋กœ๋“œ (Servlet, POI) 2020.11.13 ์„œ๋ฒ„์— ์—…๋กœ๋“œ๋˜์–ด ์žˆ๋Š” ํŒŒ์ผ์„ ์ฝ์€ ํ›„ ๋ฐ์ดํ„ฐ๋ฅผ ์ถ”๊ฐ€(์ˆ˜์ •)ํ•˜๊ณ  ๋‹ค์šด๋กœ๋“œํ•˜๋Š” ๊ธฐ๋Šฅ ๊ตฌํ˜„ - ์—…๋กœ๋“œ๋˜์–ด ์žˆ๋Š” ํŒŒ์ผ (์–‘์‹) - DB์— ์ €์žฅ๋œ ๋ฐ์ดํ„ฐ๋ฅผ ์—‘์…€์— ์ถ”๊ฐ€ ์‚ฌ์šฉ - HttpServletRequest, HttpServletResponse - FileInputStream - XSSFWorkbook - ServletOutputStream 1. Controller API๋ฅผ ํ˜ธ์ถœํ•˜๋ฉด ์—‘์…€๋‹ค์šด๋กœ๋“œ ๊ธฐ๋Šฅ์„ ์ œ๊ณตํ•˜๋Š” Service๋ฅผ ํ˜ธ์ถœํ•œ๋‹ค. @GetMapping(value = "/v1/cpnType/{cpnTypeId}/promotion/iss/{issDstrSeq}/target/excel/down") public void excelDownloadIssTarget(HttpServletRequ.. 2020. 11. 13.

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