错误1

(node:28340) UnhandledPromiseRejectionWarning: TypeError: Cannot read property ‘customMiddleware’ of undefined
at handleABAP (C:\Code\UI5\Walkthrough\35\node_modules@sap\ux-ui5-tooling\dist\cli\cmd\add-deploy-config.js:113:29)

错误原因：使用的 Fiori tools CLI 版本过低所致。

“@sap/ux-ui5-tooling”: “1.0.10”

https://www.npmjs.com/package/@sap/ux-ui5-tooling

解决办法：使用最新的 1.4.7 版本：

错误消息2

Error: Cannot find proxy middleware config in [C:\Code\UI5\Walkthrough\35\ui5.yaml]
at f (C:\app\node-v12.18.3-win-x64\node_modules@sap\generator-fiori\generators\deployment-generator\abap\index.js:2:616172)
at Object.r.handleErrorMessage (C:\app\node-v12.18.3-win-x64\node_modules@sap\generator-fiori\generators\deployment-generator\abap\index.js:2:616358)

错误原因：ui5.yaml 文件内容不全。

至少应该包含 fiori-tools-proxy 区域。

参考一个格式正确的 ui5.yaml:

specVersion: '1.0'
metadata:
  name: 'project1'
type: application
ui5Theme: sap_fiori_3
server:
  customMiddleware:
  - name: fiori-tools-proxy
    afterMiddleware: compression
    configuration:
      ignoreCertError: false # If set to true, certificate errors will be ignored. E.g. self-signed certificates will be accepted
      backend:
      - path: /sap/opu/odata
        url: http://localhost
      ui5:
        path: 
        - /resources
        - /test-resources
        url: https://ui5.sap.com
        version:  # The UI5 version, for instance, 1.78.1. Empty means latest version
  - name: fiori-tools-appreload
    afterMiddleware: compression
    configuration:
     port: 35729
     path: webapp

错误消息3

info builder:custom deploy-to-abap Create Archive
info builder:custom deploy-to-abap Starting Deployment.on project1 � (11/11) Running task deploy-to-abap…
WARN builder:custom deploy-to-abap Connecting without any credentials, deployment may fail if authorization is required
ERR! builder:custom deploy-to-abap Deployment Failed.tion project1 � (11/11) Running task deploy-to-abap…
ERR! builder:custom deploy-to-abap getaddrinfo ENOTFOUND aa

原因是 ui5-deploy.yaml 文件中 deploy-to-abap 这个自定义 task 的 target, 即远端 ABAP 系统的 url 维护不正确。

如果看到上图所示的提示消息：

The deployment destination requires authentication. Please enter your credentials below
? Username:

说明 ABAP 系统连接成功。

错误消息4

Upload canceled, archive could not be read or appears to be empty

错误消息和这个帖子介绍的一致。

这个错误和 SAP UI5 tools 的版本有关。

使用 generator-easy-ui5 创建的 SAP UI5 项目，SAP UI5 tools 的默认版本号如下图所示：

"devDependencies": {
        "@ui5/cli": "^2.11.1",
        "@ui5/fs": "^2.0.6",
        "@ui5/logger": "^2.0.1",
        "@sap/ux-ui5-tooling": "1",
        "rimraf": "3.0.2"
    },
    "ui5": {
        "dependencies": [
            "@sap/ux-ui5-tooling"
        ]
    }

解决方案：删除 package-lock.json 文件和 node_modules 文件夹，

执行命令行安装最新版本：

npm install @sap/ux-ui5-tooling@latest

成功安装的版本号：1.4.7

将 package.json 文件里的 deploy 脚本命令更改为：

npm run build && fiori deploy --config ui5-deploy.yaml

重新执行 npm run deploy 即可：

错误消息5

Remote creation in customer namespace not possible in SAP systems

解决办法是，提前在 ABAP 系统 ER9 手动创建好 BSP 应用即可：

另一种方法，参考这个链接。