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社区首页 >问答首页 >无法在Axios POST请求中正确地将React.js对象传递给Spring服务器

问无法在Axios POST请求中正确地将React.js对象传递给Spring服务器
EN

Stack Overflow用户
提问于 2022-07-02 19:48:24
回答 1查看 476关注 0票数 2

我正在尝试创建一个Axio POST请求，该请求将一个对象发送到Spring服务器，以便将该对象保存到数据库中。

我已经看了几遍代码，并阅读了关于这个问题的几篇教程，但是所有这些教程似乎都给出了关于该做什么的相互矛盾的信息。我会把下面那些比较著名的链接起来，因为我可能漏掉了什么。

代码被大大缩短，只包括相关的部分。

前部：

React.js - AddNewBookPane

代码语言：javascript
复制
    const addNewBookToDatabase = async () => {
        const book = {
          authorID: bookAuthor,
          publisherID: bookPublisher,
          title: bookTitle,
          copyright: bookCopyright,
          isbn: bookISBN,
          edition: bookEdition,
          genreID: bookGenre,
          seriesID: bookSeries,
          series_part: bookSeriesPart,
          format: bookFormat,
          pages: bookPages,
          languageID: bookLanguage
    
        }
        console.log(book);
        const response = await libraryService.createNewBook(book)
        .catch(error => {
          console.error("The following error occured!", error);
        });
        console.log(response);
      }

在我看来，前端代码似乎是完全正确的，我可以找到的信息似乎证明了这一点。创建对象本身时不存在任何问题，所有字段都被正确填充。当我试图发送表单时收到的错误代码全部返回一个html错误500，它清楚地指示信息正在发送到服务器，但在到达时遇到问题。

创建axios请求的方法是抽象的，但最终的结构是post("http://localhost:8080/books/create", {book});。

后端：

BookServiceImpl

代码语言：javascript
复制
    @Override
    public Book createBook(Book book) {
        return bookRepository.save(book);
    }

BookServiceController

代码语言：javascript
复制
    @PostMapping(path="/create")
    public Book createBook(@RequestBody Book book) {
        return bookServicesImpl.createBook(book);
    }

这两个类与传入的请求交互。还有一个接口和@Entity类，但这两个类似乎都不够重要。

思想：

每当我试图在网站上提交请求时，服务器立即给出一个错误，上面写着Column 'title' can't be null。当我告诉方法打印书的"title“变量的值时，它每次都返回"null”。所有这些结合在一起告诉我，请求确实在发送到服务器，但在请求到达时并没有被确认。我不知道做错了什么，但我真的很想知道。

我还包括了最后一个堆栈跟踪。

代码语言：javascript
复制
2022-07-02 14:40:06.254  INFO 15016 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat-3].[localhost].[/]     : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-07-02 14:40:06.254  INFO 15016 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2022-07-02 14:40:06.254  INFO 15016 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 0 ms
2022-07-02 14:40:06.271  WARN 15016 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 1048, SQLState: 23000
2022-07-02 14:40:06.271 ERROR 15016 --- [nio-8080-exec-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : Column 'title' cannot be null
2022-07-02 14:40:06.271  INFO 15016 --- [nio-8080-exec-1] o.h.e.j.b.internal.AbstractBatchImpl     : HHH000010: On release of batch it still contained JDBC statements
2022-07-02 14:40:06.277 ERROR 15016 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement] with root cause

java.sql.SQLIntegrityConstraintViolationException: Column 'title' cannot be null
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:117) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1092) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1040) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate(ClientPreparedStatement.java:1348) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdate(ClientPreparedStatement.java:1025) ~[mysql-connector-java-8.0.25.jar:8.0.25]
    at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61) ~[HikariCP-4.0.3.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java) ~[HikariCP-4.0.3.jar:na]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3375) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3908) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:107) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:na]
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1407) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:489) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3290) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2425) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.6.8.Final.jar:5.6.8.Final]
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562) ~[spring-orm-5.3.19.jar:5.3.19]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) ~[spring-tx-5.3.19.jar:5.3.19]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) ~[spring-tx-5.3.19.jar:5.3.19]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:654) ~[spring-tx-5.3.19.jar:5.3.19]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:407) ~[spring-tx-5.3.19.jar:5.3.19]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) ~[spring-data-commons-2.6.4.jar:2.6.4]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174) ~[spring-data-jpa-2.6.4.jar:2.6.4]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.19.jar:5.3.19]
    at com.sun.proxy.$Proxy297.save(Unknown Source) ~[na:na]
    at jweb.coding.LibraryWebsite.Services.BookServiceImpl.createBook(BookServiceImpl.java:25) ~[classes/:na]
    at jweb.coding.LibraryWebsite.Controllers.BookServiceController.createBook(BookServiceController.java:50) ~[classes/:na]
    at jweb.coding.LibraryWebsite.Controllers.BookServiceController$$FastClassBySpringCGLIB$$b01e983.invoke(<generated>) ~[classes/:na]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.CglibAopProxy.invokeMethod(CglibAopProxy.java:386) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.CglibAopProxy.access$000(CglibAopProxy.java:85) ~[spring-aop-5.3.19.jar:5.3.19]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:704) ~[spring-aop-5.3.19.jar:5.3.19]
    at jweb.coding.LibraryWebsite.Controllers.BookServiceController$$EnhancerBySpringCGLIB$$82713a65.createBook(<generated>) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:681) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.19.jar:5.3.19]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.62.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.19.jar:5.3.19]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
    at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]

链接：

Spring - @GetMapping和PostMapping

React + Axios - HTTP请求示例

弹簧启动和反应

更新：

这是我尝试过的其他一些事情的快速更新。

首先，我将控制器中的方法更改为

代码语言：javascript
复制
 @PostMapping(path="/create")
    public Book createBook(@RequestBody Book book) {
        return bookServicesImpl.createBook(book);
    }

至

代码语言：javascript
复制
 @PostMapping(path="/create")
    public ResponseEntity<Book> createBook(@RequestBody Book book) {
        return bookServicesImpl.createBook(book);
    }

我的理由是，这将使它符合我的所有其他方法，但没有任何效果。

我尝试过的另一件事是将这两个独立的方法转换为单个大方法，并尝试调用getTitle()、getAuthorID()和book.getPublisherID()来创建一个“最小可行的图书”类，但不管如何，它仍然返回相同的错误；“列'title‘不能为空”。

代码语言：javascript
复制
public ResponseEntity<Book> createBook(@RequestBody Book book) {
        try {
            Book newBook = bookRepository.save(new Book(book.getTitle(),book.getAuthorID(),book.getPublisherID()));
            return new ResponseEntity<>(newBook, HttpStatus.CREATED);
        } catch (Exception e) {
            return new ResponseEntity<>(null, HttpStatus.INTERNAL_SERVER_ERROR);
        }
    }

我已经包含了来自网站的错误响应消息以及来自服务器控制台的POST请求的日志。他们可能会对这一问题有所启发。

回复错误信息

代码语言：javascript
复制
The following error occured! 
Object { message: "Request failed with status code 500", name: "AxiosError", code: "ERR_BAD_RESPONSE", config: {…}, request: XMLHttpRequest, response: {…}, stack: "" }
​
code: "ERR_BAD_RESPONSE"
​
config: Object { timeout: 0, xsrfCookieName: "XSRF-TOKEN", xsrfHeaderName: "X-XSRF-TOKEN", … }
​
message: "Request failed with status code 500"
​
name: "AxiosError"
​
request: XMLHttpRequest { readyState: 4, timeout: 0, withCredentials: false, … }
​
response: Object { data: "", status: 500, statusText: "", … }
​
stack: ""
​
<prototype>: Object { constructor: o(e, t, n, r, o), toJSON: toJSON(), stack: "", … }
react_devtools_backend.js:4026:25

服务器控制台日志消息：

代码语言：javascript
复制
o.s.w.f.CommonsRequestLoggingFilter      : After request [POST /books, client=127.0.0.1, payload={"book":{"authorID":4,"publisherID":7,"title":"test","seriesID":""}}]

新更新6:56 CS：

由于@CaptainPyscho的一些输入，我能够解决有效负载的问题，但现在出现了一个新的错误。错误如下..。

代码语言：javascript
复制
2022-07-03 18:54:32.552  WARN 4228 --- [nio-8080-exec-2] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 1062, SQLState: 23000
2022-07-03 18:54:32.552 ERROR 4228 --- [nio-8080-exec-2] o.h.engine.jdbc.spi.SqlExceptionHelper   : Duplicate entry '52' for key 'book.PRIMARY'
2022-07-03 18:54:32.552  INFO 4228 --- [nio-8080-exec-2] o.h.e.j.b.internal.AbstractBatchImpl     : HHH000010: On release of batch it still contained JDBC statements
2022-07-03 18:54:32.553 DEBUG 4228 --- [nio-8080-exec-2] o.s.w.f.CommonsRequestLoggingFilter      : After request [POST /books, client=127.0.0.1, payload={"title":"whatever","authorID":5,"publisherID":5}]

我理解这是一个问题，如果一个实体的键没有正确设置，但是我服务器上的Book实体从第一天起就分配了这个值。我在下面包括了一节课来展示它。

代码语言：javascript
复制
@Entity
public class Book {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    int bookID;
    
    @NotEmpty
    String title;
    String isbn;

变量"bookID“也适用于其他方法。例如，当我使用API将数据库an中的所有书籍输入Postman时，当它们出现在数据库本身时，它们都会显示出相应的in。

我不完全确定为什么会发生这个问题，但大家都认为不应该发生。

我将继续努力，但任何投入都将不胜感激。

reactjs
spring-boot
axios
spring-data-jpa
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2022-07-03 18:35:34

控制器期望请求的主体是Book的属性，因此尝试如下：

代码语言：javascript
复制
payload={"authorID":4,"publisherID":7,"title":"test","seriesID":""}

如果不想更改您的React代码，可以更改控制器方法的参数，如下所示：

代码语言：javascript
复制
public Book createBook(@RequestBody CustomRequestBody body)

您的CustomRequestBody应该是：

代码语言：javascript
复制
public class CustomRequestBody {
   private Book book;

   //Setter and getter methods
}
票数 2
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/72842020

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