Intégration d'Angular à Sping Tool Suite

Bonjour,
Je souhaite intégrer Angular à Spring mais lorsque j'accède à l'adresse localhost:8080 j'obtiens une erreur:

Citation:

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Thu Nov 01 03:30:09 MUT 2018
There was an unexpected error (type=Not Found, status=404).
No message available

Dans mon projet Spring

pom.xml

Code:

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<?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>
 
	<groupId>com.example</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>
 
	<name>demo</name>
	<description>Demo project for Spring Boot</description>
 
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.0.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
 
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>
 
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
 
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
 
	<build>
		<plugins>
 
			<plugin>
				<artifactId>maven-resources-plugin</artifactId>
				<executions>
				      <execution>
				          <id>copy-resources</id>
				          <phase>validate</phase>
				          <goals><goal>copy-resources</goal></goals>
				          <configuration>
				              <outputDirectory>C:/Users/user/Developpement/target/classes/static/</outputDirectory >
				              <resources>
				                  <resource>
				                      <directory>C:/Users/user/Developpement/Angular/demo-client/dist/demo-client</directory >
				                  </resource>
				              </resources>
				          </configuration>
				      </execution>
				</executions>
			</plugin>
 
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
 
 
</project>

Dans mon projet Angular, appelé demo-client

J'ai crée un fichier proxy.conf.json

Code:

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{
	"/api": {
		"target": "http://localhost:8080",
		"secure": false
	}
}

package.json

Code:

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  "scripts": {
    "start": "ng serve --proxy-config proxy.conf.json",
    ...
  },

Arborescence de mon projet: C:/Users/user/Developement

-Developpement
  - Angular
     - demo-client
  - Spring
     - demo