KEYCLOAK是一套用戶、WEB API登錄管理，授權管理的WEB應用。
如果要訪問受KEYCLOAK保護的REST API服務，則需要夾帶一個ACCESS_TOKEN。
前端頁面：
- 前端頁面一般是給用戶使用的，則需要用戶輸入在KEYCLOAK中有效的用戶名和密碼，并提供CALL BAK的URL，提交給KEYCLOAK
http://10.80.27.69:8180/auth/realms/quickstart/protocol/openid-connect/auth?client_id=app-springboot-confidential&redirect_uri=http://10.80.27.69:8183/&response_type=code&scope=openid
- 如果KEYCLOAK驗證通過，則通知頁面重導向回調的URL，并附上code=xxx，此code則是AUTHORIZATION_CODE
http://10.80.27.69:8183/?session_state=2ad9ab98-6c39-43a8-872f-2112c27b74df&code=3f48ce19-58f9-45d9-8c09-30d492bf4b24.2ad9ab98-6c39-43a8-872f-2112c27b74df.bd7526ef-b1bf-447f-baef-b7dfd6f0df93
- 回調的URL對應的SERVELET，取得AUTHORIZATION_CODE，并加上client_id和client_secrect，調用KEYLOAK的取ACCESS_TOKEN的HTTP API，取得ACCESS_TOKEN，返回給頁面
http://10.80.27.69:8180/auth/realms/quickstart/protocol/openid-connect/token
client_id=app-springboot-confidential&client_secret=3acf7692-49cb-4c45-9943-6f3dba512dae&redirect_uri=http://10.80.27.69:8183/&grant_type=authorization_code&code=cc7ac566-90f9-404e-b88e-fa28037b07d1.591311e1-5380-46a2-9363-834f17337922.bd7526ef-b1bf-447f-baef-b7dfd6f0df93
- 頁面保存此ACCESS_TOKEN，就可以調用后臺的各種API獲取數據
{
"access_token": "eyJhbGciOiJSUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICJGSjg2R2NGM2pUYk5MT2NvNE52WmtVQ0lVbWZZQ3FvcXRPUWVNZmJoTmxFIn0.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.Ut6aZ6E1d4Esz0gRv2ubxdvrxmGvZLHHZepD5pnGxlqb_yZ4Q82TdGTG0iL4JJn2NH3QAU501dhzzuv6-OT9BUBKP-4ufyKv2DxSvt3GgdN30au5JsATHFyOWuuZGRBd3iWcynf9u3OJnSkHEnrIwRYatgndLzy8dy3AeqF12CI",
"expires_in": 300,
"refresh_expires_in": 600,
"refresh_token": "eyJhbGciOiJIUzI1NiIsInR5cCIgOiAiSldUIiwia2lkIiA6ICI2MTlhMmJjOS0yMWIwLTRmNGMtODI4OC1kNTJmMjA3OWEzY2EifQ.eyJleHAiOjE2MzQwMjExODksImlhdCI6MTYzNDAyMDU4OSwianRpIjoiYTM0NTQ1MTYtMzc3NC00YmRlLTgzOTMtN2QyMTdkZjdkZmJkIiwiaXNzIjoiaHR0cDovLzEwLjgwLjI3LjY5OjgxODAvYXV0aC9yZWFsbXMvcXVpY2tzdGFydCIsImF1ZCI6Imh0dHA6Ly8xMC44MC4yNy42OTo4MTgwL2F1dGgvcmVhbG1zL3F1aWNrc3RhcnQiLCJzdWIiOiJkZGVkMDA2YS0xY2QxLTRjODUtOTQ1MS0wMjFlZmY3OTFiMmUiLCJ0eXAiOiJSZWZyZXNoIiwiYXpwIjoiYXBwLXNwcmluZ2Jvb3QtY29uZmlkZW50aWFsIiwic2Vzc2lvbl9zdGF0ZSI6ImM0ZTdkM2E4LTA4NjMtNDkwMC05MWZhLTBhMWJhZmJkZTRlNyIsInNjb3BlIjoicHJvZmlsZSBlbWFpbCJ9.QhjkJBGz5UvwBF7xHM7_V_yjfF0lrA_EWzAVdFf-BRI",
"token_type": "bearer",
"not-before-policy": 0,
"session_state": "c4e7d3a8-0863-4900-91fa-0a1bafbde4e7",
"scope": "profile email"
}
- 這就是authorization_code流程
后端服務：
驗證Access Token和獲取Token元信息：
刷新Token：
http://10.80.27.69:8180/auth/realms/quickstart/protocol/openid-connect/token
client_id=app-springboot-confidential&client_secret=3acf7692-49cb-4c45-9943-6f3dba512dae&grant_type=refresh_token&refresh_token=asdfasd
- 返回
{
"access_token": "eyJhbGciOiJSUzI1NiIsIn",
"expires_in": 300,
"refresh_expires_in": 1800,
"refresh_token": "eyJhbGciOiJIUzI1NiIsInR5cCIgOi",
"token_type": "Bearer",
"not-before-policy": 1610728470,
"session_state": "c1273eb5-f922-420c-b23a-854be9735c1d",
"scope": "profile email"
}
Reference:
https://blog.csdn.net/nklinsirui/article/details/112706006https://www.baeldung.com/?s=keycloakhttps://www.doag.org/formes/pubfiles/11143470/2019-NN-Sebastien_Blanc-Easily_Secure_your_Microservices_with_Keycloak-Praesentation.pdf