Не удалось проанализировать класс [xx] из ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClas ⇐ JAVA

[Anonymous]

Эта ошибка «java.lang.IllegalStateException: не удалось проанализировать класс [com.example.hello_world.Controller.FileUploadController] из ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClassLoader@5d967894]» возникает, когда я используйте @RestController. Это класс загрузки файлов. И он может работать, если я удалю @RestController, как я могу решить эту проблему?
вот мой код

Код: Выделить всё

package com.example.hello_world.Controller;

import jakarta.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;

import java.io.IOException;
import java.net.http.HttpRequest;

@RestController
public class FileUploadController {
@PostMapping("/upload")
public String upload(String name, MultipartFile photo, HttpServletRequest request)throws IOException{
System.out.println(name);

System.out.println(photo.getOriginalFilename());
System.out.println(photo.getContentType());

String path = request.getServletContext().getRealPath("/upload/");
System.out.println(path);
saveFile(photo,path);

return "上传成功";
}

public void saveFile(MultipartFile photo,String path)throws IOException {
File dir = new File(path);
//判断文件是否存在，不存在则创建
if(!dir.exists()){
dir.mkdir();
}
//最终存储的文件
File file = new File(path+photo.getOriginalFilename());
//将上传的文件存储到file对象
photo.transferTo(file);
}

}

Вот мой pom.xml:

Код: Выделить всё

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0

org.springframework.boot
spring-boot-starter-parent
2.7.2
  

com.example
hello_world
0.0.1-SNAPSHOT
hello_world
Demo project for Spring Boot

21




org.springframework.boot
spring-boot-starter-web



org.springframework.boot
spring-boot-starter-test
test



org.springframework.boot
spring-boot-devtools
true



org.springframework.boot
spring-boot-starter-aop
2.4.5
compile



io.springfox
springfox-swagger2
2.9.2


io.springfox
springfox-swagger-ui
2.9.2



jakarta.servlet
jakarta.servlet-api
6.0.0
provided







org.springframework.boot
spring-boot-maven-plugin
3.2.4

Полная трассировка стека:

Код: Выделить всё

Error creating bean with name 'fileUploadController': Lookup method resolution failed;  nested exception is java.lang.IllegalStateException: Failed to introspect Class [com.example.hello_world.Controller.FileUploadController] from ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClassLoader@5d967894]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:289) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1302) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1219) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.2.jar:2.7.2]
at com.example.hello_world.HelloWorldApplication.main(HelloWorldApplication.java:10) ~[classes/:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.7.2.jar:2.7.2]
Caused by: java.lang.IllegalStateException: Failed to introspect Class [com.example.hello_world.Controller.FileUploadController] from ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClassLoader@5d967894]
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:485) ~[spring-core-5.3.22.jar:5.3.22]
at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:321) ~[spring-core-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:267) ~[spring-beans-5.3.22.jar:5.3.22]
... 21 common frames omitted
Caused by: java.lang.NoClassDefFoundError: jakarta/servlet/http/HttpServletRequest
at java.base/java.lang.Class.getDeclaredMethods0(Native Method) ~[na:na]
at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3502) ~[na:na]
at java.base/java.lang.Class.getDeclaredMethods(Class.java:2601) ~[na:na]
at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:467) ~[spring-core-5.3.22.jar:5.3.22]
...  23 common frames omitted
Caused by: java.lang.ClassNotFoundException: jakarta.servlet.http.HttpServletRequest
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:496) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:475) ~[na:na]
at org.springframework.boot.devtools.restart.classloader.RestartClassLoader.loadClass(RestartClassLoader.java:145) ~[spring-boot-devtools-2.7.2.jar:2.7.2]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
... 27 common frames omitted

Я думаю, что конфликтов зависимостей не существует. Меня это очень смущает, я был бы очень признателен, если бы кто-нибудь помог мне решить эту проблему!

Подробнее здесь: https://stackoverflow.com/questions/785 ... boot-devto