Java：版本问题调试不好看一下

版本问题调试不好，看一下
org.springframework.boot
spring-boot-starter-parent
2.6.7

com.alibaba.cloud
spring-cloud-starter-alibaba-nacos-discovery
2021.1

    <dependency>
        <groupId>org.springframework.cloudgroupId>
        <artifactId>spring-cloud-dependenciesartifactId>
        <version>2020.0.1version>
        <type>pomtype>
        <scope>importscope>
    dependency>

报错：
java.lang.NoClassDefFoundError: org/springframework/boot/Bootstrapper
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at org.springframework.cloud.bootstrap.encrypt.DecryptEnvironmentPostProcessor.getTextEncryptor(DecryptEnvironmentPostProcessor.java:82)
at org.springframework.cloud.bootstrap.encrypt.DecryptEnvironmentPostProcessor.postProcessEnvironment(DecryptEnvironmentPostProcessor.java:68)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:102)
at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:87)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:85)
at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:66)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:120)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:114)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:65)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:339)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:297)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
at com.zw.hospital.ServiceHospApplication.main(ServiceHospApplication.java:16)
Caused by: java.lang.ClassNotFoundException: org.springframework.boot.Bootstrapper
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
31 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:52985', transport: 'socket'

Process finished with exit code 1

你的版本不对

jar冲突问题，可以改为：


<!-- https://mvnrepository.com/artifact/com.alibaba.cloud/spring-cloud-starter-alibaba-nacos-discovery -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    <version>2021.0.1.0</version>
</dependency>

使用 maven 的物料清单 BOM 管理依赖版本问题，可以参考这篇文章：
https://blog.csdn.net/liuerchong/article/details/116933501

Java：版本问题调试不好 看一下

Java：版本问题调试不好看一下