小编alw*_*lwi的帖子

我是Spring和Vaadin的新手.我正在尝试浏览视图导航教程.

我想将来启用@Push来定期更新从数据库获取的数据.

该项目非常非常简单.我不使用配置类,也不使用任何XML - 仅Java注释.

任何人都可以帮我修复示例代码吗？因为我收到了警告,我不知道可以用它做什么,忽略它们的结果是什么.

第一个是:

onClassPostProcessor : Cannot enhance @Configuration bean definition 'com.vaadin.spring.VaadinConfiguration' since its singleton instance has been created too early. The typical cause is a non-static @Bean method with a BeanDefinitionRegistryPostProcessor return type: Consider declaring such methods as 'static'.

另一个是我添加compile("com.vaadin:vaadin-push")依赖时:

o.a.util.IOUtils : More than one Servlet Mapping defined. WebSocket may not work org.apache.catalina.core.ApplicationServletRegistration

AppMain

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class AppMain {
    public static void main(String[] args) {
        SpringApplication.run(AppMain.class, args);
    } …

使用时启动我的应用程序时一切正常Intellij.但当我fatJar(使用gradle插件:) eu.appsatori.fatjar并执行时:

java -jar myapp.jar

我得到这样的东西:

11:41:01.224 [main] ERROR org.springframework.boot.SpringApplication - Application startup failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [my.testing.MyAppMain]; nested exception is java.lang.IllegalArgumentException: No auto configuration classes found in META-INF/spring.factories. If you are using a custom packaging, make sure that file is correct.
        at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:482)
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:184)
...

看起来它没有找到自动配置类META-INF/spring.factories.

如何添加此文件？它的内容应该是什么？

我有以下构建脚本:

apply plugin: "java";
apply plugin: "idea";
apply plugin: 'application'
apply plugin: 'eu.appsatori.fatjar'
apply plugin: 'org.springframework.boot'

repositories { …