{"id":583,"date":"2021-07-08T05:51:36","date_gmt":"2021-07-08T05:51:36","guid":{"rendered":"http:\/\/scrutineer.co.kr\/wordpress\/?p=583"},"modified":"2021-07-08T05:51:42","modified_gmt":"2021-07-08T05:51:42","slug":"spring-webclient","status":"publish","type":"post","link":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/2021\/07\/08\/spring-webclient\/","title":{"rendered":"Spring WebClient"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\uc6f9\ud074\ub77c\uc774\uc5b8\ud2b8!!<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uacf5\uc2dd API \ubb38\uc11c\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/docs.spring.io\/spring-framework\/docs\/current\/javadoc-api\/org\/springframework\/web\/reactive\/function\/client\/WebClient.html\">https:\/\/docs.spring.io\/spring-framework\/docs\/current\/javadoc-api\/org\/springframework\/web\/reactive\/function\/client\/WebClient.html<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc554\ub9cc \ud55c\uae00\uc774 \uc88b\uc544\ub3c4 \uc6b0\uc120 \uc601\uc5b4 \uc6d0\ubb38&#8230; API\ubb38\uc11c\uc758 \ud5e4\ub4dc \ubd80\ubd84\ub9cc\uc774\ub77c\ub3c4 \ubcf4\uc790.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"944\" height=\"42\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image.png\" alt=\"\" class=\"wp-image-584\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image.png 944w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-300x13.png 300w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-768x34.png 768w\" sizes=\"auto, (max-width: 944px) 100vw, 944px\" \/><figcaption>\uadfc\ub370 \uc0ac\uc2e4 \uc774\uac8c \uc804\ubd80\uc57c<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ub17c\ube14\ub7ed\ud0b9 I\/O\uc778 \ubc18\uc751\ud615 HTTP\ud074\ub77c\uc774\uc5b8\ud2b8\uc774\uace0, \ubb50 \ube60\ub974\uace0 \uc720\ucc3d\ud558\uace0 \uc5b4\uca4c\uad6c\uc800\uca4c\uad6c&#8230;&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc5ec\uae30\uc11c \ud575\uc2ec\uc740 &#8216;\ub17c\ube14\ub7ed\ud0b9&#8217; \uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Non-Blocking I\/O<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc11c\ubc84\uac1c\ubc1c\uc790\uc5d0\uac8c \ud544\uc218 \ub355\ubaa9\uc778 &#8216;\uc5b4\ub835\uace0 \ubc18\uc751\uc18d\ub3c4\uac00 \ube60\ub978&#8217; \uac1c\ubc1c\ubc29\ubc95\uc774\ub2e4. \uae30\uc874\uc758 RestTemplate\uc740<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8216;\uba40\ud2f0\uc2a4\ub808\ub4dc\uc774\uae34 \ud558\uc9c0\ub9cc \ube14\ub85c\ud0b9 I\/O\ubc29\uc2dd&#8217; \uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">RestTemplate\ub97c \uc774\uc6a9\ud574 HTTP request\ub97c \ub0a0\ub9ac\uba74, HTTP response\uac00 \uc62c \ub54c\uae4c\uc9c0 \uacc4\uc18d \uae30\ub2e4\ub9b0\ub2e4(\ube14\ub85c\ud0b9)\ub294 \ub73b\uc774\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uae34\ub9d0 \ud544\uc694\uc5c6\uc774 \ub2f9\uc5f0\ud788 \uc218\ud589\uc18d\ub3c4\uac00 \ub290\ub9ac\uaca0\ub2e4. HTTP request \uc2dc\uc810\ubd80\ud130 response \uac00 \uc62c\ub54c\uae4c\uc9c0 \ud558\uc5fc\uc5c6\uc774 \uae30\ub2e4\ub824\uc57c \ud558\uae30 \ub54c\ubb38&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uadf8\ub798\uc11c WebClient\ub77c\ub294, \uc4f8\ub370\uc5c6\ub294 \ub9ac\uc18c\uc2a4 \uc810\uc720\uc728\uc744 \ub0ae\ucd94\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c Spring 5.0\uc5d0\uc11c\ubd80\ud130 \uc81c\uacf5\ud574 \uc900\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc0ac\uc6a9\ubc95<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.baeldung.com\/spring-5-webclient\">https:\/\/www.baeldung.com\/spring-5-webclient<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uae30\ud0c0 \ud2b9\uc774\uc0ac\ud56d<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>\uc120\uc5b8\ud615 \uc2a4\ud0c0\uc77c\ub85c \uc791\uc131 \uac00\ub2a5\u001f<\/li><li>(\ub2f9\uc5f0\ud558\uc9c0\ub9cc) Connection timeout \uc124\uc815 \uac00\ub2a5.<\/li><li>(\ub2f9\uc5f0\ud558\uc9c0\ub9cc) request Header \uc124\uc815 \uac00\ub2a5.<\/li><li>retrive \uc640 exchange\ub85c response \ud578\ub4e4\ub9c1 \ucde8\uc0ac\uc120\ud0dd<ul><li>retrive<ul><li>\uac04\ub2e8\uac04\ub2e8<\/li><\/ul><\/li><li>exchange<ul><li>\ubcf5\uc7a1\ubcf5\uc7a1<\/li><\/ul><\/li><\/ul><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">retrive vs exchange<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"775\" height=\"378\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-2.png\" alt=\"\" class=\"wp-image-586\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-2.png 775w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-2-300x146.png 300w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-2-768x375.png 768w\" sizes=\"auto, (max-width: 775px) 100vw, 775px\" \/><figcaption>ResponseEntity\ub85c, \ud639\uc740 Bean Object\ub85c \ud55c\ubc29\uc5d0 assign<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"480\" src=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-3-1024x480.png\" alt=\"\" class=\"wp-image-587\" srcset=\"https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-3-1024x480.png 1024w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-3-300x141.png 300w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-3-768x360.png 768w, https:\/\/scrutineer.co.kr\/wordpress\/wp-content\/uploads\/2021\/07\/image-3.png 1371w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>\uc660\ub9cc\ud574\uc11c \uc694\ub807\uac8c exchange\ub85c \uc77c\uc77c\ud788 response \ubc1b\uc544\uc4f0\ub294 \ud751\uc6b0\ub4e4\uc740 \uc5c6\uc81c?<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mono vs Flux<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">pub\/sub \uad6c\uc870\uc5d0\uc11c\uc758 publish\ub97c \ud55c\ubc88\ub9cc \ucc98\ub9ac\ud560 \uac83\uc774\ub0d0, \uc5ec\ub7ec\ubc88 \ucc98\ub9ac\ud560 \uac83\uc778\uac00\uc758 \ucc28\uc774\ub97c \uac16\ub294\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e8\uc801\uc778 \uc608\ub85c reduce \uc5f0\uc0b0\uc790\ub294 Mono\ub97c \ub9ac\ud134\ud558\uace0, \ub450\uac1c\uc758 Mono\ub97c mergeWIth \uc5f0\uc0b0\uc744 \ud1b5\ud574 \ub098\uc624\ub294 \uacb0\uacfc\ub294 Flux\uc744 \ub9ac\ud134\ud55c\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-tech-kakao-com wp-block-embed-tech-kakao-com\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"hEZgvOhif5\"><a href=\"https:\/\/tech.kakao.com\/2018\/05\/29\/reactor-programming\/\">\uc0ac\uc6a9\ud558\uba74\uc11c \uc54c\uac8c \ub41c Reactor, \uc608\uc81c \ucf54\ub4dc\ub85c \uc0b4\ud3b4\ubcf4\uae30<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\uc0ac\uc6a9\ud558\uba74\uc11c \uc54c\uac8c \ub41c Reactor, \uc608\uc81c \ucf54\ub4dc\ub85c \uc0b4\ud3b4\ubcf4\uae30&#8221; &#8212; tech.kakao.com\" src=\"https:\/\/tech.kakao.com\/2018\/05\/29\/reactor-programming\/embed\/#?secret=hEZgvOhif5\" data-secret=\"hEZgvOhif5\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc6f9\ud074\ub77c\uc774\uc5b8\ud2b8!! \uacf5\uc2dd API \ubb38\uc11c\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4. https:\/\/docs.spring.io\/spring-framework\/docs\/current\/javadoc-api\/org\/springframework\/web\/reactive\/function\/client\/WebClient.html \uc554\ub9cc \ud55c\uae00\uc774 \uc88b\uc544\ub3c4 \uc6b0\uc120 \uc601\uc5b4 \uc6d0\ubb38&#8230; API\ubb38\uc11c\uc758 \ud5e4\ub4dc \ubd80\ubd84\ub9cc\uc774\ub77c\ub3c4 \ubcf4\uc790. \ub17c\ube14\ub7ed\ud0b9 I\/O\uc778 \ubc18\uc751\ud615 HTTP\ud074\ub77c\uc774\uc5b8\ud2b8\uc774\uace0, \ubb50 \ube60\ub974\uace0 \uc720\ucc3d\ud558\uace0 \uc5b4\uca4c\uad6c\uc800\uca4c\uad6c&#8230;&#8230; \uc5ec\uae30\uc11c \ud575\uc2ec\uc740 &#8216;\ub17c\ube14\ub7ed\ud0b9&#8217; \uc774\ub2e4. Non-Blocking I\/O \uc11c\ubc84\uac1c\ubc1c\uc790\uc5d0\uac8c \ud544\uc218 \ub355\ubaa9\uc778 &#8216;\uc5b4\ub835\uace0 \ubc18\uc751\uc18d\ub3c4\uac00 \ube60\ub978&#8217; \uac1c\ubc1c\ubc29\ubc95\uc774\ub2e4. \uae30\uc874\uc758 RestTemplate\uc740 &#8216;\uba40\ud2f0\uc2a4\ub808\ub4dc\uc774\uae34 \ud558\uc9c0\ub9cc \ube14\ub85c\ud0b9 I\/O\ubc29\uc2dd&#8217; \uc774\ub2e4. RestTemplate\ub97c \uc774\uc6a9\ud574 HTTP request\ub97c \ub0a0\ub9ac\uba74, HTTP response\uac00 \uc62c \ub54c\uae4c\uc9c0 \uacc4\uc18d &#8230; <a title=\"Spring WebClient\" class=\"read-more\" href=\"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/2021\/07\/08\/spring-webclient\/\" aria-label=\"Read more about Spring WebClient\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-583","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=583"}],"version-history":[{"count":1,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/583\/revisions"}],"predecessor-version":[{"id":588,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/583\/revisions\/588"}],"wp:attachment":[{"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scrutineer.co.kr\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}