做一个项目，前后端分离，前端用了vue-element-admin模板，版本4.2.1，后端接口用的springboot开发，数据交互用的json格式。
问题：
通过postman发送的请求，能够看到request请求的请求体；在用vue-element-admin封装的request.js工具类发送post请求时，没有request请求体，返回异常信息java.io.EOFException: Unexpected EOF read on the socket，特此记录一下以备后用，具体异常信息如下：
org.springframework.http.converter.HttpMessageNotReadableException: I/O error while reading input message; nested exception is java.io.EOFException: Unexpected EOF read on the socket
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:216)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:157)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:130)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:126)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:166)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.EOFException: Unexpected EOF read on the socket
at org.apache.coyote.http11.Http11InputBuffer.fill(Http11InputBuffer.java:734)
at org.apache.coyote.http11.Http11InputBuffer.access$300(Http11InputBuffer.java:40)
at org.apache.coyote.http11.Http11InputBuffer$SocketInputBuffer.doRead(Http11InputBuffer.java:1061)
at org.apache.coyote.http11.filters.IdentityInputFilter.doRead(IdentityInputFilter.java:102)
at org.apache.coyote.http11.Http11InputBuffer.doRead(Http11InputBuffer.java:245)
at org.apache.coyote.Request.doRead(Request.java:551)
at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:318)
at org.apache.catalina.connector.InputBuffer.checkByteBufferEof(InputBuffer.java:611)
at org.apache.catalina.connector.InputBuffer.readByte(InputBuffer.java:329)
at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:84)
at java.io.FilterInputStream.read(FilterInputStream.java:83)
at java.io.PushbackInputStream.read(PushbackInputStream.java:139)
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver$EmptyBodyCheckingHttpInputMessage.<init>(AbstractMessageConverterMethodArgumentResolver.java:324)
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:193)
... 67 common frames omitted
前端封装的post请求接口如下：
/**
* 新增字典记录
* @param data
* @returns {AxiosPromise}
*/
export function dictAdd(data) {
return request({
url: '/sys/dict/add',
method: 'post',
data
})
}后端接收请求数据的接口如下：
@RestController
@RequestMapping(value = "/sys/dict")
public class AuthSysDictController {
private static Logger logger = CommonUtils.getLog(AuthSysDictController.class);
@Resource
private AuthSysDictService authSysDictService;
@PostMapping(value = "add")
public Result add(@RequestBody AuthSysDict dict, HttpServletRequest request) {
logger.debug("dict-update-----" + Json.toJson(dict));
authSysDictService.add(dict);
return Result.success("添加成功", dict);
}
}后来经过百度一篇博客，发现是 vue-element-admin 模板中的mock没关闭导致的，具体博文在这里【青城山下宁采臣】。
博文中重要的部分如下：
request请求体是流式数据，如果在其他地方消费过，不做特殊处理的话，后面的应用就消费不到了！
前端通过node转发到后端应用，思考了半天，觉得只有mock才会影响到request请求体，所以去mock-server.js中去查看。
EOFException根因分析
前端mock把requestBody给消费掉了，导致传到后端没有body，后端在解析的时候发现request请求头的content-length是59，就一直等待接收数据，与此同时，前端也在等待后端返回结果。1分钟后，前端等待超时，前端发EOF请求（具体为何会发EOF还需要进一步学习），后端收到以后，发现和预期的消息不一致，就报了EOF这个错误。
在mock-server.js中确实发现了相关的处理逻辑，在mock中消费了requestBody，导致在node转发时，request请求体丢失。
前端中关于mock的配置有两个地方，main.js 和 vue.config.js 中。
main.js中关于mock的配置如下：
vue.config.js中关于mock的配置如下：
解决方法：
解决的方法就是在自己的项目中去除mock相关配置，不需要的话，在去除去除mock相关配置的前提下，将mock整个目录去除。
方式一：
将mock-server.js中的下面两行代码注释，重新启动项目即可。按照mokc的初衷，mock中没有模拟的请求，就会发到后端进行真实请求。这种方式，请求还是会走mock，只是在mock中不处理请求信息了而已。
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({
extended: true
}))
方式二：关闭mock
1. vue.config.js 中注释掉
before: require('./mock/mock-server.js'),这一行代码，如图：
2. main.js 中注释掉关于mock的代码，如下图：
然后重启前端项目，测试一下接口。去除mock，就是在 【方式二】 的基础上，将vue-element-admin模板中的mock目录删掉。