java - 无法从演示项目设置 Spring 应用程序主方法 - java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContext
问题描述
我正在探索这个项目 - https://github.com/davidmarquis/redis-scheduler。
我设置了它并能够在那里运行集成测试（尽管 SpringIntegrationTest 中的大多数测试用例都失败了，但那是另一回事了）。
现在，我想运行应用程序而不是测试。我刚刚在 com.github.davidmarquis.redisscheduler 包中添加了一个主类；-
package com.github.davidmarquis.redisscheduler;
import com.github.davidmarquis.redisscheduler.drivers.jedis.JedisDriver;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import redis.clients.jedis.JedisPool;
import java.time.Instant;
public class Main {
static RedisTaskScheduler scheduler;
private static JedisPool pool;
public static void main(String[] args) {
provideActors();
}
private static void provideActors() {
ApplicationContext ctx = new ClassPathXmlApplicationContext("application-context-test.xml");
scheduler = ctx.getBean(RedisTaskScheduler.class);
ApplicationContext ctxAnno = new AnnotationConfigApplicationContext(AppConfig.class);
pool = (JedisPool) ctxAnno.getBean("jedis");
}
public void stopScheduler() {
scheduler.stop();
}
public static void shutdown() {
pool.close();
}
}
我添加了以下配置类 -
package com.github.davidmarquis.redisscheduler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.JedisPool;
@Configuration
public class AppConfig {
@Bean(name="jedis")
public JedisPool helloWorld() {
return new JedisPool("localhost", 6379);
}
}
这是供参考的pom（与github项目相同）-
<?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.github.davidmarquis</groupId>
<artifactId>redis-scheduler</artifactId>
<version>3.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>redis-scheduler</name>
<description>Java implementation of a lightweight distributed task scheduler backed by Redis</description>
<url>https://github.com/davidmarquis/redis-scheduler</url>
<licenses>
<license>
<name>MIT</name>
<url>http://www.opensource.org/licenses/mit-license.php</url>
<distribution>repo</distribution>
</license>
</licenses>
<scm>
<connection>scm:git:git@github.com:davidmarquis/redis-scheduler.git</connection>
<developerConnection>scm:git:git@github.com:davidmarquis/redis-scheduler.git</developerConnection>
<url>git@github.com:davidmarquis/redis-scheduler.git</url>
<tag>HEAD</tag>
</scm>
<developers>
<developer>
<id>davidmarquis</id>
<name>David Marquis</name>
<email>david@radiant3.ca</email>
</developer>
</developers>
<distributionManagement>
<snapshotRepository>
<id>ossrh</id>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
</snapshotRepository>
<repository>
<id>ossrh</id>
<url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
</repository>
</distributionManagement>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>javax.annotation</groupId>
<artifactId>javax.annotation-api</artifactId>
<version>1.3.1</version>
</dependency>
<!-- Lettuce driver -->
<dependency>
<groupId>io.lettuce</groupId>
<artifactId>lettuce-core</artifactId>
<version>5.0.3.RELEASE</version>
<scope>provided</scope>
</dependency>
<!-- Jedis driver -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
<scope>provided</scope>
</dependency>
<!-- Spring Data Redis driver -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.8.11.RELEASE</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.15.RELEASE</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.15.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- Tests -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.github.kstyrc</groupId>
<artifactId>embedded-redis</artifactId>
<version>0.6</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-all</artifactId>
<version>1.3</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.9.5</version>
<scope>test</scope>
</dependency>
</dependencies>
<profiles>
<profile>
<id>release</id>
<activation>
<property>
<name>performRelease</name>
<value>true</value>
</property>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>3.0.0</version>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<version>1.5</version>
<executions>
<execution>
<id>sign-artifacts</id>
<phase>verify</phase>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>disable-java8-doclint</id>
<activation>
<jdk>[1.8,)</jdk>
</activation>
<properties>
<additionalparam>-Xdoclint:none</additionalparam>
</properties>
</profile>
</profiles>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>2.5.3</version>
<configuration>
<autoVersionSubmodules>true</autoVersionSubmodules>
<useReleaseProfile>false</useReleaseProfile>
<releaseProfiles>release</releaseProfiles>
<goals>deploy</goals>
</configuration>
</plugin>
<plugin>
<groupId>org.sonatype.plugins</groupId>
<artifactId>nexus-staging-maven-plugin</artifactId>
<version>1.6.7</version>
<extensions>true</extensions>
<configuration>
<serverId>ossrh</serverId>
<nexusUrl>https://oss.sonatype.org/</nexusUrl>
<autoReleaseAfterClose>true</autoReleaseAfterClose>
</configuration>
</plugin>
</plugins>
<resources>
<resource>
<directory>${project.basedir}/src/main/resources</directory>
</resource>
</resources>
<testResources>
<testResource>
<directory>src/test/resources</directory>
<filtering>true</filtering>
</testResource>
</testResources>
</build>
</project>
我在运行主类时遇到以下异常 -
Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/context/ApplicationContext
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2688)
at java.lang.Class.privateGetMethodRecursive(Class.java:3035)
at java.lang.Class.getMethod0(Class.java:3005)
at java.lang.Class.getMethod(Class.java:1771)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: org.springframework.context.ApplicationContext
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
更新 application-context-test.xml -
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<context:property-placeholder location="test-config.properties"/>
<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="localhost"/>
<property name="port" value="6379"/>
<property name="database" value="0"/>
</bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="jedisConnectionFactory"/>
<property name="keySerializer">
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
</property>
</bean>
<bean id="triggerListener" class="com.github.davidmarquis.redisscheduler.lib.LatchedTriggerListener"/>
<bean id="stubbedClock" class="com.github.davidmarquis.redisscheduler.lib.StubbedClock" />
<bean id="springTemplateDriver" class="com.github.davidmarquis.redisscheduler.drivers.spring.RedisTemplateDriver">
<constructor-arg name="redisTemplate" ref="redisTemplate"/>
</bean>
<bean id="scheduler" class="com.github.davidmarquis.redisscheduler.RedisTaskScheduler" >
<constructor-arg name="driver" ref="springTemplateDriver"/>
<!-- <constructor-arg name="listener" ref="triggerListener"/>-->
<constructor-arg name="listener">
<bean class="com.github.davidmarquis.redisscheduler.Implementation"/>
</constructor-arg>
<property name="clock" ref="stubbedClock"/>
<property name="pollingDelayMillis" value="10"/> <!-- Speeds up polling for tests so that they run quicker. -->
</bean>
</beans>
更新 2
我尝试将 spring-core jar 添加到类路径中，仍然没有变化 -
更新 3
当我将 spring-context-4.3.15.RELEASE.jar 添加到类路径时，该类的错误消失了。但是后来我又遇到了另一个错误-
org.springframework.expression.ParserContext
为什么我必须为每个弹簧组件都这样做？这太痛苦了！
解决方案
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