Vaadin + maven问题

Question

我正在尝试为一个新项目设置Vaadin。我正在遵循https://vaadin.com/wiki/-/wiki/Main/Creating+a+Maven+project中记录的步骤

以下命令位于空目录中：

mvn archetype:generate -DarchetypeGroupId=com.vaadin -DarchetypeArtifactId=vaadin-archetype-application -DarchetypeVersion=7.1.8

出现以下错误：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-archetype-plugin:2.2:generate (default-cli) on project standalone-pom: The desired archetype does not exist (com.vaadin:vaadin-archetype-application:7.1.8) -> [Help 1]

我还尝试使用以下命令创建pom：

<?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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>group</groupId>
    <artifactId>artifact</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>name</name>
    <description>description</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <vaadin.version>7.1.6</vaadin.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-server</artifactId>
            <version>${vaadin.version}</version>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-client-compiled</artifactId>
            <version>${vaadin.version}</version>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-client</artifactId>
            <version>${vaadin.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-themes</artifactId>
            <version>${vaadin.version}</version>
        </dependency>
    </dependencies>
</project>

运行mvm clean install会导致以下错误：

[ERROR] Failed to execute goal on project artifact: Could not resolve dependencies for project group:artifact:war:1.0-SNAPSHOT: The following artifacts could not be resolved: com.vaadin:vaadin-server:jar:7.1.6, com.vaadin:vaadin-client-compiled:jar:7.1.6, com.vaadin:vaadin-client:jar:7.1.6, com.vaadin:vaadin-themes:jar:7.1.6: Failure to find com.vaadin:vaadin-server:jar:7.1.6 in http://10.255.251.14:9991/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced -> [Help 1]

此外，还会看到以下警告：

[WARNING] The POM for com.vaadin:vaadin-server:jar:7.1.6 is missing, no dependency information available
[WARNING] The POM for com.vaadin:vaadin-client-compiled:jar:7.1.6 is missing, no dependency information available
[WARNING] The POM for com.vaadin:vaadin-client:jar:7.1.6 is missing, no dependency information available
[WARNING] The POM for com.vaadin:vaadin-themes:jar:7.1.6 is missing, no dependency information available

起初，我们认为我们的nexus安装可能有一些问题，但我们也尝试在没有nexus的情况下从外部机器运行这些命令。同样的问题。

Answer 1

尝试添加

<dependency>
    <groupId>com.vaadin</groupId>
    <artifactId>vaadin-client-compiler</artifactId>
    <version>${vaadin.version}</version>
    <scope>provided</scope>
</dependency>

Answer 2

将以下内容添加到您的pom.xml：

<repositories>
        <repository>
            <id>vaadin-addons</id>
            <url>http://maven.vaadin.com/vaadin-addons</url>
        </repository>
        <repository>
            <id>vaadin-snapshots</id>
            <url>http://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>vaadin-snapshots</id>
            <url>http://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
            <releases>
                <enabled>false</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

然后，您必须强制更新。示例：mvn install -U

Answer 3

这个问题似乎与maven存储库有关，而与vaadin无关。我尝试过在其他国家定位计算机(很可能也是不同的maven仓库镜像)，并且工作正常。

更新:我让它工作了一个小时左右，没有改变任何东西，然后它又开始失败了。这可能与目前每个人都为之疯狂的heartbleed bug有关。管理员可能会到处修补它，可能会对存储库服务或我们自己的网络造成一些中断。