部署到azure web app时引发ImportError（“找不到zbar共享库”）

Question

我有一个python项目，我正试图从我的windowspc将其部署到azure web app。它在windows本地pc上运行得非常好，但是当我在那里开发时，我在下面得到了这个错误日志。

从Azure Web应用程序登录：

2021-12-12T15:13:47  Welcome, you are now connected to log-streaming service.


Starting Log Tail -n 10 of existing logs ----
/home/LogFiles/__lastCheckTime.txt  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/__lastCheckTime.txt)12/12/2021 15:13:24

/home/LogFiles/kudu/trace/046d6a19f398-24f4f7a7-d50b-4ea9-be24-c7c34e2d5366.txt  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/kudu/trace/046d6a19f398-24f4f7a7-d50b-4ea9-be24-c7c34e2d5366.txt)
2021-12-12T10:52:10    Outgoing response, type: response, statusCode: 404, statusText: NotFound

/home/LogFiles/kudu/trace/046d6a19f398-3df0f78c-d0d0-4e08-a612-9e9ad0816062.txt  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/kudu/trace/046d6a19f398-3df0f78c-d0d0-4e08-a612-9e9ad0816062.txt)
2021-12-12T11:12:10    Outgoing response, type: response, statusCode: 404, statusText: NotFound

/home/LogFiles/kudu/trace/046d6a19f398-a222a843-e436-4f93-b238-b4bc721aba7a.txt  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/kudu/trace/046d6a19f398-a222a843-e436-4f93-b238-b4bc721aba7a.txt)
2021-12-12T10:12:09  Startup Request, url: /, method: HEAD, type: request, pid: 79,1,5, ScmType: None, SCM_DO_BUILD_DURING_DEPLOYMENT: true

/home/LogFiles/kudu/trace/7a8a200c580b-f1a5986f-5cfc-4ca1-aafe-30f1230d1e60.txt  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/kudu/trace/7a8a200c580b-f1a5986f-5cfc-4ca1-aafe-30f1230d1e60.txt)
2021-12-12T15:12:10  Startup Request, url: /api/vfs/site/wwwroot/?_=1639321905938, method: GET, type: request, pid: 67,1,4, ScmType: None, SCM_DO_BUILD_DURING_DEPLOYMENT: true

/home/LogFiles/2021_12_12_10-30-0-10_default_docker.log  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/2021_12_12_10-30-0-10_default_docker.log)
2021-12-12T11:44:40.357915732Z     return prototype((fname, load_libzbar()))
2021-12-12T11:44:40.357921832Z   File "/tmp/8d9bd6318a7b507/antenv/lib/python3.8/site-packages/pyzbar/wrapper.py", line 115, in load_libzbar
2021-12-12T11:44:40.357927632Z     libzbar, dependencies = zbar_library.load()
2021-12-12T11:44:40.357933732Z   File "/tmp/8d9bd6318a7b507/antenv/lib/python3.8/site-packages/pyzbar/zbar_library.py", line 65, in load
2021-12-12T11:44:40.357940032Z     raise ImportError('Unable to find zbar shared library')
2021-12-12T11:44:40.357946132Z ImportError: Unable to find zbar shared library
2021-12-12T11:44:40.358272136Z [2021-12-12 11:44:40 +0000] [41] [INFO] Worker exiting (pid: 41)
2021-12-12T11:44:40.563733800Z [2021-12-12 11:44:40 +0000] [39] [INFO] Shutting down: Master
2021-12-12T11:44:40.563780701Z [2021-12-12 11:44:40 +0000] [39] [INFO] Reason: Worker failed to boot.


/home/LogFiles/2021_12_12_10-30-0-10_docker.log  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/2021_12_12_10-30-0-10_docker.log)
2021-12-12T11:38:17.033Z ERROR - Container barcodessecret_0_a5c0ed86 didn't respond to HTTP pings on port: 8000, failing site start. See container logs for debugging.
2021-12-12T11:38:17.108Z INFO  - Stopping site barcodessecret because it failed during startup.
2021-12-12T11:44:10.056Z INFO  - Starting container for site
2021-12-12T11:44:10.058Z INFO  - docker run -d -p 8000:8000 --name barcodessecret_0_cc711f28 -e WEBSITE_SITE_NAME=barcodessecret -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_HOSTNAME=barcodessecret.azurewebsites.net -e WEBSITE_INSTANCE_ID=e8a25aeda9f8112c52a78edbf794ec6bc124d323fe575e4a705382f2e36592ba -e HTTP_LOGGING_ENABLED=1 appsvc/python:3.8_20210810.1
2021-12-12T11:44:14.616Z INFO  - Initiating warmup request to container barcodessecret_0_cc711f28 for site barcodessecret
2021-12-12T11:44:30.360Z INFO  - Waiting for response to warmup request for container barcodessecret_0_cc711f28. Elapsed time = 15.7438301 sec
2021-12-12T11:44:43.805Z ERROR - Container barcodessecret_0_cc711f28 for site barcodessecret has exited, failing site start
2021-12-12T11:44:43.821Z ERROR - Container barcodessecret_0_cc711f28 didn't respond to HTTP pings on port: 8000, failing site start. See container logs for debugging.
2021-12-12T11:44:43.871Z INFO  - Stopping site barcodessecret because it failed during startup.

/home/LogFiles/2021_12_12_10-30-1-36_default_docker.log  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/2021_12_12_10-30-1-36_default_docker.log)

/home/LogFiles/2021_12_12_10-30-1-36_docker.log  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/2021_12_12_10-30-1-36_docker.log)
2021-12-12T15:13:24.974Z INFO  - Starting container for site
2021-12-12T15:13:24.974Z INFO  - docker run -d -p 8000:8000 --name barcodessecret_0_73b46eaa -e WEBSITE_SITE_NAME=barcodessecret -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_HOSTNAME=barcodessecret.azurewebsites.net -e WEBSITE_INSTANCE_ID=b48e99ae39c2631bdbfaff480078c704864fb7435737f78ac9c0af67dc0f25d5 -e HTTP_LOGGING_ENABLED=1 appsvc/python:3.8_20210810.1
2021-12-12T15:13:28.990Z INFO  - Initiating warmup request to container barcodessecret_0_73b46eaa for site barcodessecret
2021-12-12T15:13:44.398Z INFO  - Waiting for response to warmup request for container barcodessecret_0_73b46eaa. Elapsed time = 15.4079531 sec

/home/LogFiles/webssh/.log  (https://barcodessecret.scm.azurewebsites.net/api/vfs/LogFiles/webssh/.log)

Ending Log Tail of existing logs ---
Starting Live Log Stream ---

我尝试过不同的解决方案，包括在我的需求中加入zbar py。txt文件，如下所示：

opencv-python-headless==4.5.1.48
flask
flask-sqlalchemy
flask-login
ezdxf
matplotlib
qrcode
zbar-py
pyzbar
pyzbar[scripts]

我怎样才能解决这个问题？

Answer 1

尝试将libzbar0放入容器中。

或者把安装代码放在Python代码的开头

!apt install libzbar0