Spring Boot应用程序无法在intellij idea中启动，显示异常

Question

我试图在Intellij Idea中运行应用程序，但我遇到了以下错误。。。。

org.springframework.beans.factory.BeanCreationException：创建名为'globalExceptionHandler'的bean时出错：查找方法解析失败；嵌套异常java.lang.IllegalStateException：无法自省类[com.app.exception_handlerGlobalExceptionHandler]从ClassLoader[org.springframework.beans.factory.support.]在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors（AutowiredAnnotationBeanPostProcessor.java:289）~[spring-beans-5.3.9.jar： 5.3.9]在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcess（AbstractAutowireCapableBeanFactory.java:1284）~[spring-beans-5.3.9.jar： 5.3.9]在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1201）~[spring-beans-5.3.9.jar： 5.3.9]在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireBeanFactory.java:564）~[spring-beans-5.3.9.jar： 5.3.9]在org.springframework.boot.devtools.restart.classloader.RestartClassLoader@2ad58620DefaultListableBeanFactory. preInstantiateSingletons（DefaultListableBeanFactory. java： 944）~[spring-bean-5.3.9. jar： 5.3.9]在org. springframework. conttext. support。AbstractApplication Context. finishBeanFactory初始化（AbstractApplication Context. java： 918）~[spring-conttion-5.3.9. jar： 5.3.9]在org. springframe. conttext. support。AbstractApplication Context-5.3.9. jar： 5.3.9]在org. springframe. boot。SpringApplication.刷新（SpringApplication. java： 754）~[spring-boot-2.5.4. jar： 2.5.4]在org. springframe. boot。SpringApplication.刷新上下文（SpringApplication. java： 434）~[spring-boot在java. base/java. lang. refect上委托方法访问程序。调用方法（Method. java： 566）~[na： na]在org. springframe. boot. devtools. restart。RestartLauncher. run（RestartLauncher. java： 49）~[spring-boot-devtools s-2.5.4. jar： 2.5.4]

下面是全局异常处理程序类

package com.app.exception_handler;

import java.time.LocalDateTime;

import org.springframework.dao.EmptyResultDataAccessException;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;

import com.app.custom_exceptions.UserHandlingException;
import com.app.dto.ErrorResponse;

@ControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler{
    
    @ExceptionHandler(RuntimeException.class)
    public ResponseEntity<?> handleRuntimeException(RuntimeException e) {
        System.out.println("in handle run time exc " + e);
        ErrorResponse resp = new ErrorResponse(e.getMessage(), LocalDateTime.now());
        return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(resp);
    }
    
    @ExceptionHandler(EmptyResultDataAccessException.class)
    public ResponseEntity<?> handleEmptyDataExcetpion(EmptyResultDataAccessException e) {
        System.out.println("in handle  exc " + e);
        ErrorResponse resp = new ErrorResponse(e.getMessage(), LocalDateTime.now());
        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(resp);
    }

    @ExceptionHandler(UserHandlingException.class)
    public ResponseEntity<?> handleUserHandlingException(UserHandlingException e) {
        System.out.println("in handle user exc " + e);
        ErrorResponse resp = new ErrorResponse(e.getMessage(), LocalDateTime.now());
        return ResponseEntity.status(HttpStatus.NOT_FOUND).body(resp);
    }
    
    @Override
    protected ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotValidException ex,
            HttpHeaders headers, HttpStatus status, WebRequest request) {
        System.out.println("in handle invalid meth args ");
        StringBuilder sb = new StringBuilder("Validation Errors : ");
        ex.getBindingResult().getFieldErrors().forEach(e -> sb.append(e.getDefaultMessage()+" "));
        return ResponseEntity.status(HttpStatus.BAD_REQUEST)
                .body(new ErrorResponse(sb.toString(), LocalDateTime.now()));
    }
    


}

Answer 1

我已经测试了这段代码片段-应用程序启动很好。

非法状态异常（IllegalStateException）表示某个方法在非法或不适当的时间被调用。换言之，Java环境或Java应用程序对于请求的操作没有处于适当的状态。