java 确认是否不适用于 Spring Boot 中的放置请求？

ny6fqffe  于 12个月前  发布在  Java
关注(0)|答案(2)|浏览(60)

我是spring Boot 的新手，正在开发一个简单的crud应用程序。我已经创建了一个学生模型，其中只有很少的验证和很少的字段来测试验证是否有效。使用post请求/students创建新学生时，验证正在工作。现在，我希望在更新学生时也能应用相同的验证，因为无论是创建还是更新，字段都需要保持一致。我已经配置了一个put请求到/students/{id}，以根据id更新学生。但是验证不起作用，如果我将put更改为post，而不是获得{message:"name should have atleast 4 characters"}的json响应，我会得到一个异常。作为
{ "timestamp": "2021-06-29T10:06:52.866+00:00", "status": 500, "error": "Internal Server Error", "trace": "org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction\r\n\tat org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:571)\r\n\tat org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743)\r\n\tat org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711)\r\n\tat org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:654)\r\n\tat org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:407)\r\n\tat org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)\r\n\tat org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)\r\n\tat org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137)\r\n\tat org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)\r\n\tat org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174)\r\n\tat org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)\r\n\tat org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97)\r\n\tat org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)\r\n\tat org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)\r\n\tat com.sun.proxy.$Proxy93.save(Unknown Source)\r\n\tat com.demo.service.Studentservice.updateStudent(Studentservice.java:42)\r\n\tat com.demo.controller.StudentController.updateStudent(StudentController.java:47)\r\n\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\r\n\tat java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\r\n\tat java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\r\n\tat java.base/java.lang.reflect.Method.invoke(Method.java:566)\r\n\tat org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197)\r\n\tat org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141)\r\n\tat org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)\r\n\tat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894)\r\n\tat org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)\r\n\tat org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)\r\n\tat org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1063)\r\n\tat org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)\r\n\tat org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)\r\n\tat org.springframework.web.servlet.FrameworkServlet.doPut(FrameworkServlet.java:920)\r\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:684)\r\n\tat org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)\r\n\tat javax.servlet.http.HttpServlet.service(HttpServlet.java:764)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:228)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163)\r\n\tat org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163)\r\n\tat org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)\r\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163)\r\n\tat org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)\r\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163)\r\n\tat org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)\r\n\tat org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:190)\r\n\tat org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:163)\r\n\tat org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)\r\n\tat org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)\r\n\tat org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)\r\n\tat org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)\r\n\tat org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)\r\n\tat org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)\r\n\tat org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)\r\n\tat org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)\r\n\tat org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)\r\n\tat org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893)\r\n\tat org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1723)\r\n\tat org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)\r\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\r\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\r\n\tat org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)\r\n\tat java.base/java.lang.Thread.run(Thread.java:834)\r\nCaused by: javax.persistence.RollbackException: Error while committing the transaction\r\n\tat org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:81)\r\n\tat org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104)\r\n\tat org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562)\r\n\t... 66 more\r\nCaused by: javax.validation.ConstraintViolationException: Validation failed for classes [com.demo.model.Student] during persist time for groups [javax.validation.groups.Default, ]\nList of constraint violations:[\n\tConstraintViolationImpl{interpolatedMessage='name should have min of 4 characters', propertyPath=name, rootBeanClass=class com.demo.model.Student, messageTemplate='name should have min of 4 characters'}\n]\r\n\tat org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:140)\r\n\tat org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:80)\r\n\tat org.hibernate.action.internal.EntityInsertAction.preInsert(EntityInsertAction.java:214)\r\n\tat org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:100)\r\n\tat org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)\r\n\tat org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478)\r\n\tat java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)\r\n\tat org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475)\r\n\tat org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344)\r\n\tat org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40)\r\n\tat org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:99)\r\n\tat org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362)\r\n\tat org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453)\r\n\tat org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212)\r\n\tat org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380)\r\n\tat org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:448)\r\n\tat org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183)\r\n\tat org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40)\r\n\tat org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281)\r\n\tat org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101)\r\n\t... 67 more\r\n", "message": "Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction", "path": "/students/3" } in my postman.
下面是代码的结构：
Student.java

package com.demo.model;

import javax.persistence.*;
import javax.validation.constraints.*;

@Entity
@Table(name="Students")
public class Student {
    @Id
    private int id;

    @Size(min=4,message = "name should have min of 4 characters")
    @NotEmpty(message="name should not be null")
    private String name;
    private int age;
    @Email
    private String email;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }
}

字符串
StudentRepository.java

package com.demo.repository;

import com.demo.model.Student;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface StudentRepository extends CrudRepository<Student,Integer> {
}

型
Studentservice.java个

package com.demo.service;
import com.demo.errors.StudentNotFoundException;
import com.demo.model.Student;
import com.demo.repository.StudentRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.*;

@Service
public class Studentservice {
    @Autowired
    StudentRepository studentRepository;

    //getting all students
    public List<Student> getStudents(){
        ArrayList<Student> students = new ArrayList<>();
        studentRepository.findAll().forEach(students::add);
        return students;
    }

   //find student
   public Student getStudent(int id){
        return studentRepository.findById(id).orElseThrow(() -> new StudentNotFoundException(id));
   }

   //create a student
    public Student createStudent(Student student){
       return studentRepository.save(student);
    }

    //delete a student
    public void deleteStudent(int id){
        getStudent(id);
        studentRepository.deleteById(id);
    }

    //update student
    public void updateStudent(int id,Student student ){
        if(getStudent(id)!=null){
            studentRepository.save(student);
        }
    }
}

型
StudentController.java

package com.demo.controller;

import com.demo.model.Student;
import com.demo.service.Studentservice;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.*;
import org.springframework.web.bind.annotation.*;

import javax.validation.Valid;
import java.util.*;

@RestController
public class StudentController {

    @Autowired
    Studentservice studentservice;

    //get students
    @GetMapping("/students")
    private List<Student> fetchStudents(){
        return studentservice.getStudents();
    }

    //get student
    @GetMapping("/students/{id}")
    private ResponseEntity<Object> fetchStudent(@PathVariable("id") int id){
        Student found= studentservice.getStudent(id);
        return new ResponseEntity<Object>(found,HttpStatus.OK);
    }

    //create student
    @PostMapping("/students")
    private ResponseEntity<Object> createStudent(@Valid @RequestBody Student student) {
        Student s = studentservice.createStudent(student);
        return new ResponseEntity<Object>(s, HttpStatus.CREATED);
    }
    //delete student
    @DeleteMapping("/students/{id}")
    private ResponseEntity<Object> deleteStudent(@PathVariable("id") int id){
        studentservice.deleteStudent(id);
        return new ResponseEntity<Object>("deleted student",HttpStatus.OK);
    }

    //update student
    @PutMapping("/students/{id}")
    private ResponseEntity<Object> updateStudent(@Valid @PathVariable("id") int id, @RequestBody Student student){
        studentservice.updateStudent(id,student);
        return new ResponseEntity<Object>("updated succesfully",HttpStatus.OK);
    }
}

型
StudentNotFoundException.java

package com.demo.errors;

public class StudentNotFoundException extends RuntimeException{
    public StudentNotFoundException(int id){
        super("Student not found at:"+ id);
    }

}

型
InputValidationHandler.java

package com.demo.errors;

import org.springframework.http.*;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
import java.util.*;

@ControllerAdvice
public class InputValidationHandler extends ResponseEntityExceptionHandler {
    @Override
    protected ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotValidException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
        Map<String,String>errors=new HashMap<>();
        ex.getBindingResult().getAllErrors().forEach((error)->{
            String fieldName=((FieldError) error).getField();
            String message=error.getDefaultMessage();
            errors.put(fieldName,message);
        });
        return new ResponseEntity<Object>(errors,HttpStatus.BAD_REQUEST);
    }
}

型

Java

2条答案

按热度按时间
4nkexdtk

4nkexdtk1#

您必须将@Valid注解放在请求主体参数之前，在put端点中，您将它放在id之前，因此验证不起作用

赞(0）分享  回复(0）举报  12个月前
yzuktlbb

yzuktlbb2#

如果你像我一样使用dto包，你也会得到这些错误。因此，在您的dto请求中，您必须像下面这样添加Java bean验证。以便验证dto的requestData。也可以删除实体之一的验证：

package com.microspring.departementservice.dto;

import jakarta.persistence.Entity;
import jakarta.persistence.Table;
import jakarta.validation.constraints.NotEmpty;
import jakarta.validation.constraints.Size;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

@NoArgsConstructor
@AllArgsConstructor
@Data
@Builder
public class DepartementRequest {
    @NotEmpty
    @Size(min = 2, message = " department name should have at least 2 characters")
    private String departmentName;
    @NotEmpty
    @Size(min = 2, message = " department address should have at least 2 characters")
    private String departmentAddress;
    @NotEmpty
    @Size(min = 2, message = " department code should have at least 2 characters")
    private String departmentCode;
}

字符串
它为我工作，并在您的控制器中添加有效的注解。

赞(0）分享  回复(0）举报  12个月前
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