使用spring-boot-starter-web的Spring Boot无法在Maven中编译

Question

I am using jdk1.7 and spring boot 1.4.2.Release.I created a brand new Spring boot project from start.spring.io. It compiled fine. I tried to add the below dependency for exposing a REST web service.

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

I get the below error:

[ERROR] Failed to execute goal on project demo: Could not resolve 
dependencies for project com.example:demo:jar:0.0.1-SNAPSHOT: Failed to 
collect dependencies at org.springframework.boot:spring-boot-starter-
web:jar:1.4.2.RELEASE -> org.hibernate:hibernate-validator:jar:5.2.4.Final: 
Failed to read artifact descriptor for org.hibernate:hibernate-
validator:jar:5.2.4.Final: Could not transfer artifact 
org.jboss.shrinkwrap:shrinkwrap-bom:pom:1.2.2 from/to spring-ext 
(http://repo.spring.io/ext-release-local/): repo.spring.io: Unknown host 
repo.spring.io -> [Help 1]

It takes the http://repo.spring.io/ext-release-local link which does not have jboss related files.

Please let me know if I am doing something wrong.

Answer 1

Your pom should look like this

<?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>1.4.2.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-data-rest</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

after that you need to run it with command mvn spring-boot:run from the project directory

I hope this time it will defenetly work only need to copy and pase this pom content to your pom file

To build spring boot application from scratch you can follow the link

Answer 2

In my case, just adding the repository configuration to the pom.xml didn't work. I had to add the following code into /maven-installation-dir/conf/settings.xml file.

<mirror>
    <id>central-proxy</id>
    <name>central-proxy</name>
    <url>http://corporate-intranet/repo/url</url>
    <mirrorOf>central</mirrorOf></mirror>

I hope it helps someone.