如何在基于maven的java war项目中设置angular 4

Question

我变得有点疯狂了，因为我找不到在一个将使用maven构建的java war项目中安装angular 4应用程序的指南。这是因为我想在wildfly服务器上运行它。

有什么帮助吗？

谢谢

Answer 1

我有类似的要求，有一个源项目，其中有java web服务项目以及angular项目(一个基于angular-cli的项目)，maven build应该创建一个包含所有angular文件的war。我使用了maven-frontend-plugin，对基本路径进行了很少的配置更改。

我们的目标是创建一个war文件，其中包含所有的java代码，外加war根文件夹中所有的aot编译的angular代码，所有这一切都是通过一个命令mvn clean package完成的。

为了避免angular-app路由器urls和您的java应用程序urls之间的冲突，您需要使用HashLocationStrategy。一种方法是在app.module.ts中设置，如下所示

app.module.ts -

providers: [
    { provide: LocationStrategy, useClass: HashLocationStrategy },

]

Angular App的文件夹结构如下-

angular-项目

• dist
• e2e
• node_modules
• public
• src
  • app
  • assets
  • environments
  • favicon.ico
  • index.html
  • main.ts
  • polyfills.ts
  • style.css
  • tsconfig.json
  • typings.d.ts
  • etc-etc

​

• tmp
• .angular-cli.json
• .gitignore
• karma.conf.js
• package.json
• README.md
• tslint.json
• etc - etc

Maven项目-

主

• java
• resources
• webapp
  • WEB-INF
  • web.xml

的

• src

​

​

​

• angular-project (将您的angular项目here)
• node_installation
• pom.xml

放入

将maven-frontend plugin配置添加到pom.xml

 <properties>
    <angular.project.location>angular-project</angular.project.location>
    <angular.project.nodeinstallation>node_installation</angular.project.nodeinstallation>
</properties>

 <plugin>
            <groupId>com.github.eirslett</groupId>
            <artifactId>frontend-maven-plugin</artifactId>
            <version>1.0</version>
            <configuration>
                <workingDirectory>${angular.project.location}</workingDirectory>
                <installDirectory>${angular.project.nodeinstallation}</installDirectory>
            </configuration>
            <executions>
                <!-- It will install nodejs and npm -->
                <execution>
                    <id>install node and npm</id>
                    <goals>
                        <goal>install-node-and-npm</goal>
                    </goals>
                    <configuration>
                        <nodeVersion>v6.10.0</nodeVersion>
                        <npmVersion>3.10.10</npmVersion>
                    </configuration>
                </execution>

                <!-- It will execute command "npm install" inside "/e2e-angular2" directory -->
                <execution>
                    <id>npm install</id>
                    <goals>
                        <goal>npm</goal>
                    </goals>
                    <configuration>
                        <arguments>install</arguments>
                    </configuration>
                </execution>
                <!-- It will execute command "npm build" inside "/e2e-angular2" directory 
                    to clean and create "/dist" directory -->
                <execution>
                    <id>npm build</id>
                    <goals>
                        <goal>npm</goal>
                    </goals>
                    <configuration>
                        <arguments>run build</arguments>
                    </configuration>
                </execution>
            </executions>
        </plugin>

        <!-- Plugin to copy the content of /angular/dist/ directory to output 
            directory (ie/ /target/transactionManager-1.0/) -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>2.4.2</version>
            <executions>
                <execution>
                    <id>default-copy-resources</id>
                    <phase>process-resources</phase>
                    <goals>
                        <goal>copy-resources</goal>
                    </goals>
                    <configuration>
                        <overwrite>true</overwrite>
                        <!-- This folder is the folder where your angular files 
                        will be copied to. It must match the resulting war-file name.
                        So if you have customized the name of war-file for ex. as "app.war"
                        then below value should be ${project.build.directory}/app/ 
                        Value given below is as per default war-file name -->
                        <outputDirectory>${project.build.directory}/${project.artifactId}-${project.version}/</outputDirectory>
                        <resources>
                            <resource>
                                <directory>${project.basedir}/${angular.project.location}/dist</directory>
                            </resource>
                        </resources>
                    </configuration>
                </execution>
            </executions>
        </plugin>

正如上面的插件在内部调用'npm run build‘一样，确保package.json应该在脚本中有构建命令，如下所示-

package.json

"scripts": {
    -----//-----,
    "build": "ng build --prod",
   -----//------
}

当有人从浏览器点击应用程序时，index.html应该总是加载的，这就是为什么它是一个欢迎文件。对于web服务，假设我们有path /rest- services /*，稍后将对此进行解释。

web.xml -

<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>

<servlet-mapping>
    <servlet-name>restservices</servlet-name>
    <url-pattern>/restservices/*</url-pattern>
</servlet-mapping>

如果您的应用程序没有任何上下文路径，并且部署在服务器上的根路径上，则上述配置就足够了。但是如果您的应用程序有任何上下文路径，比如http://localhost:8080/myapplication/，那么也要对index.html文件进行更改-

angular-project/src/index.html -这里的document.location将是myapplication/ (如果应用程序没有上下文路径，则为应用程序的上下文路径)

将上下文路径设置为angular-app的基本路径的目的是，无论何时从angular进行ajax http调用，它都会将基本路径添加到url。例如，如果我尝试调用'restservices/persons‘，那么它实际上会调用'http://localhost:8080/myapplication/restservices/persons’。

index.html

 <!doctype html>
 <html lang="en">
 <head>
   <meta charset="utf-8">
   <title>E2E</title>
   <script>document.write('<base href="' + document.location + '" />');     </script>

   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="icon" type="image/x-icon" href="favicon.ico">
 </head>
 <body>
   <app-root></app-root>
 </body>

​

在所有上述更改之后，一旦您运行mvn clean package，它将创建所需的war。检查angular 'dist‘文件夹的所有内容是否都在war文件的根目录中。

Answer 2

我有一个类似的问题:我有一个名为the services的maven web应用程序模块，其中包含web服务和一个包含angular项目的maven项目(我使用CLI在src/main/angular5/ the文件夹中创建了angular项目)

​

​

与这篇文章相反，根据Parth Ghiya提供的以下链接(how to integrate Angular 2 + Java Maven Web Application)，我认为angular项目应该放在旅游服务模块项目的webapp文件夹中。考虑到这一点，我有更多的问题：

1. 通常情况下，dist文件夹中的所有编译结果都应该放在webapp文件夹下。但是在dist文件夹中，并没有所有的Angular项目资源(比如图片，css，这些资源应该出现在angular assets文件夹中，对吗？)
2. 考虑到node_modules中的angular依赖关系，我们应该把它们也集成到webapp文件夹中吗？有一个障碍:首先有Typescript文件，也应该编译为由服务器解释，但也许有编译和添加时，他们被导入到自定义应用程序的角度文件？解决方案是什么？
3. 我们是否应该在webapp文件夹中包含来自angular项目的其他类型的资源？(就像上面链接帖子中建议的打字文件夹)

Answer 3

我尝试了这些说明和其他文章。这些都很好，但是有点模棱两可。所以如果一个人不能立刻得到它..检查这个。

GitHub

请按照以下说明进行操作。

1. 将您的angular项目添加到java项目下。我的angular项目名称是tdf

。

​

2.打开app.module.ts (在您的angular项目/src/app/app.module.ts中)添加导入和提供者

import { LocationStrategy, HashLocationStrategy } from '../../node_modules/@angular/common';

      providers: [
        { provide: LocationStrategy, useClass: HashLocationStrategy },
      ],

3.打开package.json (angularproject/package.json)，添加" build "："ng build --prod“，如下所示

{
  "name": "tdf",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
     **"build": "ng build --prod",** //change like this
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },

4.更新pom.xml -add forntend插件-add ng构建目录

      <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>

          <groupId>angular</groupId>
          <artifactId>angular7java</artifactId>
          <version>0.0.1-SNAPSHOT</version>
          <packaging>war</packaging>

          <name>angular7java</name>
          <url>http://maven.apache.org</url>

          <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>   
            **<angular.project.location>tdf</angular.project.location>**
            <!--your project name -->
            <angular.project.nodeinstallation>node_installation</angular.project.nodeinstallation>
          </properties>

          <dependencies>
            <dependency>
              <groupId>junit</groupId>
              <artifactId>junit</artifactId>
              <version>3.8.1</version>
              <scope>test</scope>
            </dependency>
          </dependencies>

          <build>
           <plugins>    
                <plugin>
                        <groupId>com.github.eirslett</groupId>
                        <artifactId>frontend-maven-plugin</artifactId>
                        <version>1.6</version>
                        <configuration>
                        <workingDirectory>${angular.project.location}</workingDirectory>
                        <installDirectory>${angular.project.nodeinstallation}</installDirectory>
                         </configuration>
                        <executions>
                            <execution>
                                <id>install node and npm</id>
                                <goals>
                                    <goal>install-node-and-npm</goal>
                                </goals>
                                <configuration>
                                   <nodeVersion>v9.9.0</nodeVersion>
                                </configuration>
                            </execution>

                            <execution>
                                <id>npm install</id>
                                <goals>
                                    <goal>npm</goal>
                                </goals>
                                <!-- Optional configuration which provides for running any npm command -->
                                <configuration>
                                    <arguments>install</arguments>
                                </configuration>
                            </execution>

                             <execution>
                            <id>npm build</id>
                            <goals>
                                <goal>npm</goal>
                            </goals>
                            <configuration>
                                <arguments>run build</arguments>
                            </configuration>
                        </execution>

                        </executions>
                    </plugin>

                <!-- Plugin to copy the content of /angular/dist/ directory to output 
                    directory (ie/ /target/transactionManager-1.0/) -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>2.4.2</version>
                    <executions>
                        <execution>
                            <id>default-copy-resources</id>
                            <phase>process-resources</phase>
                            <goals>
                                <goal>copy-resources</goal>
                            </goals>
                            <configuration>
                                <overwrite>true</overwrite>
                                <!-- This folder is the folder where your angular files 
                                will be copied to. It must match the resulting war-file name.
                                So if you have customized the name of war-file for ex. as "app.war"
                                then below value should be ${project.build.directory}/app/ 
                                Value given below is as per default war-file name -->
                                <outputDirectory>${project.build.directory}/${project.artifactId}-${project.version}/</outputDirectory>
                                <resources>
                                    <resource>
                                        <directory>${project.basedir}/${angular.project.location}/dist</directory>
                                    </resource>
                                </resources>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <configuration>
                <failOnMissingWebXml>false</failOnMissingWebXml>
        <!--         <attachClasses>true</attachClasses>
                <webXml>target/web.xml</webXml>
                <webResources>
                    <resource>
                        <directory>src/main/webapp</directory>
                        <filtering>true</filtering>
                    </resource>
                </webResources> -->
            </configuration>
        </plugin>

                    <plugin>
                        <artifactId>maven-compiler-plugin</artifactId>
                        <version>3.1</version>
                        <configuration>
                            <fork>true</fork>
                            <executable>C:\Program Files\Java\jdk1.8.0_181\bin\javac.exe</executable>

<!--make sure above directory is correct (make it same as your local javac.exe-->
                        </configuration>
                    </plugin>
            </plugins>
        </build>



        </project>

1. 右键单击您的maven项目maven - maven安装或终端: mvn全新安装

一直等到它熄火。安装后，您可以看到节点安装文件夹和war文件已创建

​