java - 线程中的异常 "main"java.lang.IllegalArgumentException : Cannot instantiate interface org. springframework.context.ApplicationListener

Question

这是我在堆栈上的第一个问题。一开始我想指出我的英语很糟糕。我正在用 Java 编写程序，它必须读取文件并将内容发送到 localhost:8083/list，但这是模块之一。 我的 pom.xml 看起来像这样

<?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>

    <parent>
        <groupId>org.antek</groupId>
        <artifactId>spring-boot-multi-module</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>List</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-framework-bom</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

我的父 pom.xml 看起来是这样的

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
         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>org.antek</groupId>
    <artifactId>spring-boot-multi-module</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
    </parent>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <modules>
        <module>List</module>
        <module>MainPage</module>
    </modules>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.yaml</groupId>
                <artifactId>snakeyaml</artifactId>
                <version>1.18</version>
            </dependency>
            <dependency>
                <groupId>org.junit.jupiter</groupId>
                <artifactId>junit-jupiter-api</artifactId>
                <version>5.0.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.assertj</groupId>
                <artifactId>assertj-core</artifactId>
                <version>3.10.0</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-jpa</artifactId>
            </dependency>
            <dependency>
                <groupId>com.h2database</groupId>
                <artifactId>h2</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-framework-bom</artifactId>
                <version>4.0.3.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

我的 Appliaction.java 看起来像这样

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

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

我的 Controller

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@EnableAutoConfiguration
public class ListController {
    @RequestMapping("/list")
    @ResponseBody
    class Lista {
        MainList list = new MainList();
    }
}

最后是我的程序

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;


public class MainList {
    public static int zwracanie(String[] args) throws IOException {
            String filePath = "C:\\Users\\Antoni\\Desktop\\Lista.txt";
            int number = 0;
            BufferedReader fileReader = null;

            try {
                fileReader = new BufferedReader(new FileReader(filePath));
                String numberAsString = fileReader.readLine();
                number = Integer.parseInt(numberAsString);
            } finally {
                if (fileReader != null) {
                    fileReader.close();
                }
            }
            return number;
        }
    }

我在 IntelliJ Idea 中工作，当我尝试编译这个文件时出现问题

Exception in thread "main" java.lang.IllegalArgumentException: Cannot instantiate interface org.springframework.context.ApplicationListener : org.springframework.boot.context.logging.ClasspathLoggingApplicationListener at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:448) at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:427) at org.springframework.boot.SpringApplication.getSpringFactoriesInstances(SpringApplication.java:418) at org.springframework.boot.SpringApplication.(SpringApplication.java:268) at org.springframework.boot.SpringApplication.(SpringApplication.java:247) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) at Application.main(Application.java:8) Caused by: java.lang.NoClassDefFoundError: org/springframework/context/event/GenericApplicationListener at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1009) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:801) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:699) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:622) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:580) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) at org.springframework.util.ClassUtils.forName(ClassUtils.java:274) at org.springframework.boot.SpringApplication.createSpringFactoriesInstances(SpringApplication.java:440) ... 7 more Caused by: java.lang.ClassNotFoundException: org.springframework.context.event.GenericApplicationListener at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) ... 18 more

Answer 1

移除依赖

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-framework-bom</artifactId>
</dependency>

您将其添加到版本 4.0.3.RELEASE 中，这会与 Spring Boot 管理的版本发生版本冲突。