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我有一個Vaadin應用SpringBoot與MVN開始全新安裝彈簧開機時正常工作：用完的IDE。
如果部署到Tomcat服務器@Autowire（對於ViewProvider）不起作用。不能使用自動裝配在SpringBoot Vaadin應用部署時
我得到以下警告：
o.s.c.a. ConfigurationClassPostProcessor :
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'.
而此異常：
java.lang.IllegalArgumentException: Cannot add a null view provider at com.vaadin.navigator.Navigator.addProvider(Navigator.java:887) ~[vaadin-server-7.7.7.jar.7.7.7]
at com.example.gui.MainUI.init(ManinUI.java:39)....
我的一個應用類別：
@SpringBootApplication(scanBasePackages = { "com.example" })
@EnableJpaRepositories(basePackages={"com.example.db"})
@EntityScan(basePackages={"com.example.db.entities"})
@PropertySources(value = {@PropertySource("classpath:db.properties"),
@PropertySource("classpath:gui.properties")}
)
@EnableVaadin
public class PersonApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(PersonApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(PersonApplication.class);
}
}
我的UI類：
@Theme("valo")
@SpringUI(path="/swme")
public class MainUI extends UI {
private Navigator navigator;
private SpringViewProvider viewProvider;
@Autowired
public void setViewProvider(SpringViewProvider viewProvider) {
this.viewProvider = viewProvider;
}
@Autowired
private PersonService myService;
@Override
protected void init(VaadinRequest request) {
navigator = new Navigator(this, this);
navigator.addProvider(viewProvider);
final VerticalLayout layout = new VerticalLayout();
layout.setMargin(true);
setContent(layout);
layout.addComponent(new MyView(myService));
}
}
父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.example</groupId>
<artifactId>DOTS4</artifactId>
<version>5.0</version>
<packaging>pom</packaging>
<modules>
<module>database</module>
<module>service</module>
<module>gui</module>
</modules>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.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>
<junit.version>4.12</junit.version>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
</project>
的GUI MODUL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>
<artifactId>gui</artifactId>
<packaging>war</packaging>
<parent>
<groupId>com.example</groupId>
<artifactId>DOTS4</artifactId>
<version>1.0</version>
</parent>
<properties>
<war.name>myapp</war.name>
<maven-war-plugin.version>3.1.0</maven-war-plugin.version>
<vaadin.version>7.7.7</vaadin.version>
<vaadin-spring.version>1.2.0</vaadin-spring.version><!-- v2 requires vaadin.version >=8.0-->
</properties>
<build>
<finalName>${war.name}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>${maven-war-plugin.version}</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
</manifest>
</archive>
</configuration>
</plugin>
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<version>${vaadin.version}</version>
<configuration>
<extraJvmArgs>-Xmx512M -Xss8M</extraJvmArgs>
<webappDirectory>target/classes/VAADIN/widgetsets</webappDirectory>
<draftCompile>false</draftCompile>
<compileReport>false</compileReport>
<style>OBF</style>
<strict>true</strict>
</configuration>
<executions>
<execution>
<goals>
<goal>clean</goal>
<goal>resources</goal>
<goal>update-widgetset</goal>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.example</groupId>
<artifactId>database</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.example</groupId>
<artifactId>service</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</artifactId>
<version>${vaadin-spring.version}</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>${vaadin.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
</project>
我使用Vaadin v7.7.7與VaadinSpring V1.2和 Tomcat的8.5.15