问题描述
我在将Spring Boot与JavaFX结合使用时遇到问题。启动新应用程序时出现以下错误：
原因：java.lang.IllegalArgumentException：无法解析值“ $ {spring.application.ui.title}”中的占位符“ spring.application.ui.title”
我遵循本教程：https://blog.jetbrains.com/idea/2019/11/tutorial-reactive-spring-boot-a-javafx-spring-boot-application/进行创建。
这是我的课程：
@SpringBootApplication
public class AgricultureApplication {
public static void main(String[] args) {
Application.launch(ApplicationStartUp.class,args);
}
}
public class ApplicationStartUp extends Application {
private ConfigurableApplicationContext applicationContext;
@Override
public void init() {
applicationContext = new SpringApplicationBuilder(AgricultureApplication.class).run();
}
@Override
public void stop(){
applicationContext.close();
Platform.exit();
}
@Override
public void start(Stage primaryStage){
applicationContext.publishEvent(new StageReadyEvent(primaryStage));
}
public static void main(String[] args) {
launch(args);
}
}
@Component
public class StageInitializer implements ApplicationListener<StageReadyEvent> {
private final String applicationTitle;
private ApplicationContext applicationContext;
public StageInitializer(@Value("${spring.application.ui.title}") String applicationTitle,ApplicationContext applicationContext){
super();
this.applicationTitle = applicationTitle;
this.applicationContext = applicationContext;
}
@Override
public void onApplicationEvent(StageReadyEvent stageReadyEvent) {
final Stage primaryStage = stageReadyEvent.getStage();
try {
FXMLLoader fxmlLoader = new FXMLLoader(new ClassPathResource("/main.fxml").getURL());
fxmlLoader.setControllerFactory(aClass -> applicationContext.getBean(aClass));
Parent parent = fxmlLoader.load();
Scene scene = new Scene(parent);
primaryStage.setResizable(false);
primaryStage.setScene(scene);
primaryStage.setTitle(applicationTitle);
primaryStage.show();
}
catch (IOException e) {
e.printstacktrace();
}
}
}
public class StageReadyEvent extends ApplicationEvent {
public StageReadyEvent(Stage stage) {
super(stage);
}
public Stage getStage() {
return (Stage) this.getSource();
}
}
这是 application.properties 文件：
spring.datasource.url=jdbc:h2:file:./AgricultureRentDb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.main.web-application-type=none
spring.application.ui.title = "Test"
spring.h2.console.enabled=true
还有我的 POM.xml ：
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<packaging>pom</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>gtech</groupId>
<artifactId>agriculturerent</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<java.version>1.8</java.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.20.Final</version>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.9.8</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.4</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>29.0-jre</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-jpa</artifactId>
<version>4.3.1</version>
</dependency>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>4.3.1</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-fxml</artifactId>
<version>16-ea+1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.1.3</version>
<executions>
<execution>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>target/generated-sources/java</outputDirectory>
<processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
这是我的项目结构：
我认为spring无法识别application.properties文件，我也不为什么，我试图甚至添加@PropertySource批注并将绝对路径放置到application.properties文件或将其作为类路径。
请注意，当我按照本教程进行操作时，我使用的是Java 8而不是Java 11，但是我认为这并不是问题所在。
已编辑： 这是该项目的github链接：https://github.com/Dilyan-Galabov/Agriculture
您能帮我提供问题吗，谢谢您：）！
解决方法
首先@James_D发现将资源文件复制到目标文件夹时出现问题。实际上，即使我将其添加到pom.xml中，它们也不会被复制：
<resources>
<resource>
<directory>src/main/resources</directory>
<targetPath>${project.build.outputDirectory}</targetPath>
<includes>
<include>**/*.*</include>
</includes>
</resource>
</resources>
即使我尝试设置不同的targetPath，也会出现问题（不会将文件复制到targetPath），实际上我认为maven不会读取pom中的代码，而且我也不知道为什么会这样。