将 Maven 驱动的 Vaadin 8.5 项目适配到 Jakarta EE 兼容服务器上答案

【问题标题】：Adapt Vaadin 8.5 project driven by Maven to work on Jakarta EE compliant server将 Maven 驱动的 Vaadin 8.5 项目适配到 Jakarta EE 兼容服务器上
【发布时间】：2019-03-12 13:04:17
【问题描述】：

要使用vaadin-archetype-application Maven 原型provided by Vaadin Ltd 公司创建的可工作的Vaadin 8.5.2 应用程序，具体必须做什么才能：

访问Jakarta EE指定的类，并且
部署到符合 Jakarta EE 的服务器

Glassfish 的示例可能是最好的，但我也很想看到任何其他兼容的服务器。

具体来说，我想在我的 Vaadin 网络应用程序中使用Concurrency Utilities 1.0 (JSR 168)（如listed here）。但我的问题更笼统。

我要求在 Maven POM 中进行配置更改。将符合 Jarkata EE 的服务器附加到 IDE 以进行运行调试超出了本问题的范围，因为该问题可能已经在 Stack Overflow 中讨论过，并且不是 Vaadin 特有的。

如果这可以通过Java 11 或更高版本以及所需的modularization 完成，那就更好了。

这是该 Maven 原型创建的 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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.basilbourque.example</groupId>
    <artifactId>trash-me-8</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>trash-me-8</name>

    <prerequisites>
        <maven>3</maven>
    </prerequisites>

    <properties>
        <vaadin.version>8.5.2</vaadin.version>
        <vaadin.plugin.version>8.5.2</vaadin.plugin.version>
        <jetty.plugin.version>9.3.9.v20160517</jetty.plugin.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <!-- If there are no local customizations, this can also be "fetch" or "cdn" -->
        <vaadin.widgetset.mode>local</vaadin.widgetset.mode>
    </properties>

    <repositories>
        <repository>
            <id>vaadin-addons</id>
            <url>http://maven.vaadin.com/vaadin-addons</url>
        </repository>
    </repositories>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-bom</artifactId>
                <version>${vaadin.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-server</artifactId>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-push</artifactId>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-client-compiled</artifactId>
        </dependency>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-themes</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.2.0</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                    <!-- Exclude an unnecessary file generated by the GWT compiler. -->
                    <packagingExcludes>WEB-INF/classes/VAADIN/widgetsets/WEB-INF/**</packagingExcludes>
                </configuration>
            </plugin>
            <plugin>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-maven-plugin</artifactId>
                <version>${vaadin.plugin.version}</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>update-theme</goal>
                            <goal>update-widgetset</goal>
                            <goal>compile</goal>
                            <!-- Comment out compile-theme goal to use on-the-fly theme compilation -->
                            <goal>compile-theme</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.0.0</version>
                <!-- Clean up also any pre-compiled themes -->
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>src/main/webapp/VAADIN/themes</directory>
                            <includes>
                                <include>**/styles.css</include>
                                <include>**/styles.scss.cache</include>
                            </includes>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>

            <!-- The Jetty plugin allows us to easily test the development build by
                running jetty:run on the command line. -->
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>${jetty.plugin.version}</version>
                <configuration>
                    <scanIntervalSeconds>2</scanIntervalSeconds>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <profile>
            <!-- Vaadin pre-release repositories -->
            <id>vaadin-prerelease</id>
            <activation>
                <activeByDefault>false</activeByDefault>
            </activation>

            <repositories>
                <repository>
                    <id>vaadin-prereleases</id>
                    <url>http://maven.vaadin.com/vaadin-prereleases</url>
                </repository>
                <repository>
                    <id>vaadin-snapshots</id>
                    <url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
                    <releases>
                        <enabled>false</enabled>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                    </snapshots>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>vaadin-prereleases</id>
                    <url>http://maven.vaadin.com/vaadin-prereleases</url>
                </pluginRepository>
                <pluginRepository>
                    <id>vaadin-snapshots</id>
                    <url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
                    <releases>
                        <enabled>false</enabled>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                    </snapshots>
                </pluginRepository>
            </pluginRepositories>
        </profile>
    </profiles>

</project>

【问题讨论】：

我的理解是，目前这意味着您将添加 Java EE 8 API 依赖，删除 servlet API 依赖（因为它是多余的并且已经包含 JavaEE），最后使用 Glassfish 5.1 作为实现Java EE 8。这或多或少是 Jakarta EE 的当前状态。

标签： maven jakarta-ee vaadin vaadin8

【解决方案1】：

要将 Vaadin 与 Jakarta EE 结合使用，您需要 Vaadin CDI addon 来连接这两种技术。这是能够使用 Jakarta EE 作为后端的最佳方式。然后，您可以使用任何兼容 EE 的应用服务器。

这是来自Vaadin project starter generator

<?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.test</groupId>
    <artifactId>my-starter-project</artifactId>
    <name>My Starter Project</name>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <failOnMissingWebXml>false</failOnMissingWebXml>

        <webapp.directory>src/main/webapp</webapp.directory>

        <!-- Dependencies -->
        <vaadin.version>12.0.0</vaadin.version>
    </properties>

    <pluginRepositories>
        <!-- Repository needed for prerelease versions of Vaadin -->
        <pluginRepository>
            <id>vaadin-prereleases</id>
            <url>https://maven.vaadin.com/vaadin-prereleases</url>
        </pluginRepository>
    </pluginRepositories>

    <repositories>
        <!-- Repository needed for prerelease versions of Vaadin -->
        <repository>
            <id>vaadin-prereleases</id>
            <url>https://maven.vaadin.com/vaadin-prereleases</url>
        </repository>
        <!-- Repository used by many Vaadin add-ons -->
        <repository>
             <id>Vaadin Directory</id>
             <url>http://maven.vaadin.com/vaadin-addons</url>
        </repository>
    </repositories>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-bom</artifactId>
                <version>${vaadin.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-core</artifactId>
        </dependency>

        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-cdi</artifactId>
            <version>10.0.0.beta1</version>
        </dependency>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>8.0</version>
            <scope>provided</scope>
        </dependency>

        <!-- Added to provide logging output as Flow uses -->
        <!-- the unbound SLF4J no-operation (NOP) logger implementation -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomee.maven</groupId>
                <artifactId>tomee-maven-plugin</artifactId>
                <version>7.0.4</version>
                <configuration>
                    <tomeeClassifier>webprofile</tomeeClassifier>
                    <context>ROOT</context>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>${webapp.directory}/frontend-es5</directory>
                        </fileset>
                        <fileset>
                            <directory>${webapp.directory}/frontend-es6</directory>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <profile>
            <id>productionMode</id>
            <activation>
                <property>
                    <name>vaadin.productionMode</name>
                </property>
            </activation>

            <dependencies>
                <dependency>
                    <groupId>com.vaadin</groupId>
                    <artifactId>flow-server-production-mode</artifactId>
                </dependency>
            </dependencies>

            <build>
                <plugins>
                    <plugin>
                        <groupId>com.vaadin</groupId>
                        <artifactId>vaadin-maven-plugin</artifactId>
                        <version>${vaadin.version}</version>
                        <executions>
                            <execution>
                                <phase>prepare-package</phase>
                                <goals>
                                    <goal>copy-production-files</goal>
                                    <goal>package-for-production</goal>
                                </goals>
                                <configuration>
                                    <transpileOutputDirectory>${webapp.directory}</transpileOutputDirectory>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>

                </plugins>
            </build>
        </profile>
    </profiles>
</project>

您可以根据自己的需要对其进行调整。它基于 Vaadin 12，但您只需稍作更改即可使其与 8 一起使用。

【讨论】：