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嗨，我想将我的实际 Vaadin 8 项目更新为 Vaadin 20+ 项目。我在src/main/resources/application.properties属性下配置vaadin.whitelisted-packages=com/mycompany/myproject。

在src/main/java/com/mycompany/myproject我有一ClientApplication.java堂课

package com.mycompany.myproject;

import com.vaadin.flow.component.page.AppShellConfigurator;
import com.vaadin.flow.server.PWA;
import com.vaadin.flow.theme.Theme;

/**
 * Use the @PWA annotation make the application installable on phones, tablets
 * and some desktop browsers.
 */

@Theme(value = "mycompany")
@PWA(name = "My Company Fusion", shortName = "Company Fusion", offlineResources = { "images/logo.png" })
public class ClientApplication implements AppShellConfigurator {

}

在src/main/java/mycompany/server我有 springboot 应用程序应该启动的主要 Application.java 类下。在src/main/java/mycompany我下面有超过 4K 的 java 文件，这些文件也很重要，并且我积极开发。

package mycompany.server;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.vaadin.artur.helpers.LaunchUtil;

import mycompany.server.core.MyConfigs;


@SpringBootApplication
public class Application extends SpringBootServletInitializer {

    public static void main(String[] args) {

        // 1. Load XML config file
        final boolean configRead = MyConfigs.readConfig();
        if (configRead) {
            System.out.println(MyConfigs.getBackendserverurl());
        }

        // TODO Helmer -> if debug, add prod
        ConfigurableApplicationContext ctx = SpringApplication.run(Application.class, args);
        LaunchUtil.launchBrowserInDevelopmentMode(ctx);
    }

}

每次我尝试运行mvn -Dmaven.compiler.failOnError=false -Dmaven.test.skip=true -DskipTests spring-boot:runwebpack 服务器都需要 10 多分钟才能启动。有时需要超过 30 分钟。

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