22/07/19
스프링 마켓플레이스 . 스프링 툴 3애드온 설치에러
Spring Tools 3 Add-On for Spring Tools 4
Cannot complete the install because one or more required items could not be found.
Software being installed: Spring IDE Integration, Flex and Web Services Extension (optional) 3.9.22.202204280911-RELEASE (org.springframework.ide.eclipse.integration.feature.feature.group 3.9.22.202204280911-RELEASE)
Missing requirement: Spring IDE Configuration Graphical Editing 3.9.22.202204280911-RELEASE (org.springframework.ide.eclipse.config.graph 3.9.22.202204280911-RELEASE) requires 'osgi.bundle; org.eclipse.mylyn.commons.ui [3.7.0,4.0.0)' but it could not be found
Cannot satisfy dependency:
From: Spring IDE Core (required) 3.9.22.202204280911-RELEASE (org.springframework.ide.eclipse.feature.feature.group 3.9.22.202204280911-RELEASE)
To: org.eclipse.equinox.p2.iu; org.springframework.ide.eclipse.config.graph [3.9.22.202204280911-RELEASE,3.9.22.202204280911-RELEASE]
Cannot satisfy dependency:
From: Spring IDE Integration, Flex and Web Services Extension (optional) 3.9.22.202204280911-RELEASE (org.springframework.ide.eclipse.integration.feature.feature.group 3.9.22.202204280911-RELEASE)
To: org.eclipse.equinox.p2.iu; org.springframework.ide.eclipse.feature.feature.group 0.0.0

1. 첫번째방법
https://www.eclipse.org/mylyn/downloads/
Mylyn Downloads | The Eclipse Foundation
The Eclipse Foundation - home to a global community, the Eclipse IDE, Jakarta EE and over 415 open source projects, including runtimes, tools and frameworks.
www.eclipse.org
C:\sts-4.15.1.RELEASE\plugins 에 압축풀기
2. 두번째
https://www.eclipse.org/forums/index.php/t/1109097/
Eclipse Community Forums: Newcomers » Cannot install Spring Tools 3 Add-On for Spring Tools 4 from Marketplace | The Eclipse Fo
The Eclipse Foundation - home to a global community, the Eclipse IDE, Jakarta EE and over 350 open source projects, including runtimes, tools and frameworks.
www.eclipse.org
여기 한국어 번역해서보니까 스프링켜고 Help->> 인스톨뉴 소프트웨어-->> 검색창에
https://download.eclipse.org/releases/2021-09
Probably this feature is expecting you to be installing in the "Eclipse IDE for Enterprise Java and Web Developers" where this "missing" feature is already installed.
In your Window -> Preferences -> Install/Update -> Available Software Sites
is https://download.eclipse.org/releases/2021-09 in the list
and checked (enabled)? In the worst case,
use Help -> Install New Software..., choose/enter https://download.eclipse.org/releases/2021-09,
look for "Eclipse XML Editors and Tools" and install that first.
이거치고나서 나오는거다 인스톨한다.
인스톨후 선택 창.

설치 재조정 페이지
! 요청한 대로 설치를 완료할 수 없습니다.
다음 대체 솔루션 중 하나를 선택하십시오.
1. 설치를 동일하게 유지하고 설치할 항목을 호환되도록 수정
2. 설치 중인 항목과 호환되도록 설치 업데이트
3. 오류를 보여주고 나만의 솔루션을 구축합니다.
- 원래 요청한 것보다 적은 수의 항목을 설치하다
- 처음 요청한 버전과 다른 버전을 설치합니다.
- 이미 설치된 업데이트 항목
- 이미 설치된 항목 제거
다 설치되면 스프링재시작되고 오른쪽 밑에 인스톨 바가 움직이기 시작한다.

인스톤 다 되면 다시 애드온설치해보자.