从 Vaadin 13 迁移到 Vaadin 14 时如何修复 "Could not locate bower" 错误

Question

我正在尝试将我的 Vaadin 应用程序从第 13 版迁移到第 14 版。我正在按照迁移指南进行操作：https://vaadin.com/docs/v14/flow/v14-migration/v14-migration-guide.html 一步一步。

一切顺利，直到我必须按照本指南将 Polymer2 升级到 Polymer3：https://vaadin.com/docs/v14/flow/v14-migration/migration-tool.html

执行以下命令 mvn vaadin:migrate-to-p3 returns com.vaadin.flow.migration.MigrationToolsException: Could not locate bower. Install it manually on your system and re-run migration goal. 但是我在全局和本地都安装了凉亭。

bower -v returns 1.8.8

这是我的 package.json 的样子：

{
  "name": "no-name",
  "license": "UNLICENSED",
  "dependencies": {
    "@polymer/polymer": "3.2.0",
    "@webcomponents/webcomponentsjs": "^2.2.10",
    "polymer-modulizer": "^0.4.3"
  },
  "devDependencies": {
    "bower": "^1.8.8",
    "copy-webpack-plugin": "5.0.3",
    "raw-loader": "3.0.0",
    "webpack": "4.30.0",
    "webpack-babel-multi-target-plugin": "2.1.0",
    "webpack-cli": "3.3.0",
    "webpack-dev-server": "3.3.0",
    "webpack-merge": "4.2.1"
  },
  "description": "This project can be used as a starting point to create your own Vaadin Flow application with Spring Boot.\r It contains all the necessary configuration and some placeholder files to get you started.",
  "version": "1.0.0",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "http://git.ws.com.pl:3000/ck/vaadin-mi.git"
  },
  "author": ""
}

有人知道怎么解决吗？

Answer 1

我遇到了同样的问题运行在 Windows 10 上使用迁移工具。

作为解决方法，我使用 Docker 到运行 :

安装Docker
运行 a Maven image，我使用 Maven 3 和 openjdk 11（挂载您的 Maven 存储库以防止重新下载所有依赖项）：

docker run -it --rm -v c:/[path to your maven repo]:/root/.m2/repository -v c:/[path to your maven project]:/usr/src/myproject -w /usr/src/myproject --entrypoint "/bin/sh" maven:3-jdk-11
然后在容器中安装node和npm :

curl -sL https://deb.nodesource.com/setup_12.x | bash -

apt-get install -y nodejs
安装凉亭：

npm install -g bower
允许运行使用 root 访问 bower

echo '{ "allow_root": true }' > /root/.bowerrc
运行迁移工具

mvn vaadin:migrate-to-p3

从 Vaadin 13 迁移到 Vaadin 14 时如何修复 "Could not locate bower" 错误

How to fix "Could not locate bower" error while migrating from Vaadin 13 to Vaadin 14

npm

vaadin

bower