我正在尝试将ReactJS的现有项目集成到Spring-boot的项目中。 我正在使用的项目已经通过我实施的教程运行良好。
pom.xml与frontend-maven-plugin一起使用。
在我复制该应用程序的文件之前，我想对其进行整合。
现在我遇到此错误：
Uncaught Error: Module build failed (from ./node_modules/babel-loader/lib/index.js):
Error: Cannot find module '@babel/plugin-proposal-class-properties' from 'C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying'
at Function.module.exports [as sync] (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\resolve\lib\sync.js:58:15)
at resolveStandardizedName (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\files\plugins.js:101:31)
at resolvePlugin (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\files\plugins.js:54:10)
at loadPlugin (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\files\plugins.js:62:20)
at createDescriptor (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-descriptors.js:154:9)
at items.map (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-descriptors.js:109:50)
at Array.map (<anonymous>)
at createDescriptors (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-descriptors.js:109:29)
at createPluginDescriptors (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-descriptors.js:105:10)
at alias (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-descriptors.js:63:49)
at cachedFunction (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\caching.js:33:19)
at plugins.plugins (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-descriptors.js:28:77)
at mergeChainOpts (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-chain.js:319:26)
at C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-chain.js:283:7
at buildRootChain (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\config-chain.js:68:29)
at loadPrivatePartialConfig (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\partial.js:85:55)
at Object.loadPartialConfig (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\@babel\core\lib\config\partial.js:110:18)
at Object.<anonymous> (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:140:26)
at Generator.next (<anonymous>)
at asyncGeneratorStep (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:3:103)
at _next (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:5:194)
at C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:5:364
at new Promise (<anonymous>)
at Object.<anonymous> (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:5:97)
at Object._loader (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:220:18)
at Object.loader (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:56:18)
at Object.<anonymous> (C:\izhar\files\eclipse-workspaces\Spring-Hibernate\HibernateStudying\node_modules\babel-loader\lib\index.js:51:12)
at Object../src/main/resources/static/js/app.js (http://localhost:8080/built/bundle.js:96:7)
at __webpack_require__ (http://localhost:8080/built/bundle.js:20:30)
at http://localhost:8080/built/bundle.js:84:18
at http://localhost:8080/built/bundle.js:87:1
我通过一些搜索尝试了一些解决方法，但均未成功。
这是 pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.lingar</groupId>
<artifactId>SocialEventsTrying1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>SocialEventsTrying1</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Use MySQL Connector-J -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version><!-- this version solve the time issue -->
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- tag::frontend-maven-plugin[] -->
<plugin>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<version>1.6</version>
<configuration>
<installDirectory>target</installDirectory>
</configuration>
<executions>
<execution>
<id>install node and npm</id>
<goals>
<goal>install-node-and-npm</goal>
</goals>
<configuration>
<nodeVersion>v10.11.0</nodeVersion>
<npmVersion>6.4.1</npmVersion>
</configuration>
</execution>
<execution>
<id>npm install</id>
<goals>
<goal>npm</goal>
</goals>
<configuration>
<arguments>install</arguments>
</configuration>
</execution>
<execution>
<id>webpack build</id>
<goals>
<goal>webpack</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- end::frontend-maven-plugin[] -->
</plugins>
</build>
</project>
yyy 这是 webpack.config.js：
var path = require('path');
module.exports = {
entry: './src/main/resources/static/js/app.js',
devtool: 'sourcemaps',
cache: false,
mode: 'development',
output: {
path: __dirname,
filename: './src/main/resources/static/built/bundle.js'
},
module: {
rules: [
{
test: path.join(__dirname, '.'),
exclude: /(node_modules)/,
use: [{
loader: 'babel-loader',
options: {
presets: ["@babel/preset-env", "@babel/preset-react"]
}
}]
}
]
}
};
这是我尝试了一些更改后的 webpack 。
var path = require('path');
module.exports = {
entry: './src/main/resources/static/js/app.js',
devtool: 'sourcemaps',
cache: false,
mode: 'development',
output: {
path: __dirname,
filename: './src/main/resources/static/built/bundle.js'
},
module: {
rules: [
{
test: path.join(__dirname, '.'),
exclude: /(node_modules)/,
use: [{
loader: 'babel-loader',
options: {
presets: ["@babel/preset-env", "@babel/preset-react"],
plugins : [
'@babel/plugin-proposal-class-properties'
]
}
}
]
}
]
}
};
没有任何效果。
在每次更改中，我都在Eclipse中进行Maven更新，并从Project开始。
我很高兴找到解决方案，谢谢。
编辑：package.json
{
"name": "social-events-trying1",
"version": "0.1.0",
"description": "Trying to build the primary structure of the App + Spring Data REST",
"repository": {
"type": "git",
"url": "git@github.com:spring-guides/tut-react-and-spring-data-rest.git"
},
"keywords": [
"rest",
"hateoas",
"spring",
"data",
"react"
],
"author": "Lingar",
"license": "Apache-2.0",
"bugs": {
"url": "https://github.com/spring-guides/tut-react-and-spring-data-rest/issues"
},
"homepage": "https://github.com/spring-guides/tut-react-and-spring-data-rest",
"dependencies": {
"react": "^16.5.2",
"react-dom": "^16.5.2",
"react-router": "^4.3.1",
"react-router-dom": "^4.3.1",
"rest": "^1.3.1"
},
"scripts": {
"watch": "webpack --watch -d"
},
"devDependencies": {
"@babel/core": "^7.1.0",
"@babel/plugin-proposal-class-properties": "^7.4.4",
"@babel/preset-env": "^7.1.0",
"@babel/preset-react": "^7.0.0",
"babel-loader": "^8.0.2",
"webpack": "^4.19.1",
"webpack-cli": "^3.1.0"
}
}
答案 0 :(得分：1)
有类似的问题。软件包版本号同步后
"devDependencies": {
"@babel/core": "^7.10.1",
"@babel/node": "^7.10.1",
"@babel/plugin-proposal-class-properties": "^7.10.1",
"@babel/polyfill": "^7.10.1",
"@babel/preset-env": "^7.10.2",
"@babel/preset-react": "^7.10.1",
...
和@
const plugins = [
// transforms static class properties as well as properties declared
// with the property initializer syntax
'@babel/plugin-proposal-class-properties'
// 'babel/plugin-proposal-class-properties' doesn't work:
// ERROR in ./server/index.js
// Module build failed (from ./node_modules/babel-loader/lib/index.js):
// Error: Cannot find module 'babel/plugin-proposal-class-properties' from
];
一切正常。