SpringBoot - HttpMessageNotReadableException：JSON 解析錯誤：java.net.SocketTimeoutException

Question

我的代碼拋出異常如下

JSON parse error: java.net.SocketTimeoutException; nested exception is com.fasterxml.jackson.databind.JsonMappingException: java.net.SocketTimeoutException (through reference chain: java.util.ArrayList[9])
org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: java.net.SocketTimeoutException; nested exception is com.fasterxml.jackson.databind.JsonMappingException: java.net.SocketTimeoutException (through reference chain: java.util.ArrayList[9])
        at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:245) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:227) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodArgumentResolver.readWithMessageConverters(AbstractMessageConverterMethodArgumentResolver.java:204) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.readWithMessageConverters(RequestResponseBodyMethodProcessor.java:157) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.resolveArgument(RequestResponseBodyMethodProcessor.java:130) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:127) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134) ~[spring-web-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039) [spring-webmvc-5.1.9.RELEASE.jar!/:5.1.9.RELEASE]

我的 spring-boot 版本是 2.1.7.RELEASE，嵌入式 tomcat 用於運行應用程序。 我還設置了屬性server.connection-timeout=30s

我幾乎到處搜索，無法確定這個問題的根本原因。 我也捕捉到了這個異常並將其打印在日志中並將響應返回為 BAD_REQUEST。

這個異常間歇性地拋出，我的生產服務器此時消耗了 80% 以上的 CPU 和 memory。

這實際上是一個 POST 請求，請求正文驗證如下

    @RequestMapping( value = "/save", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE )
    public SaveDto create( @RequestBody @Valid SaveDto saveDto,
        HttpServletResponse response, HttpServletRequest request )
    {
      //my logic
    }

我的 SaveDto 如下

@JsonInclude( JsonInclude.Include.NON_NULL )
public class SaveDto
{
    private String id;
    @Size( min = 1 )
    @Valid
    private List< SaveEntryDto > saveLogEntries;
}

我的 saveEntryDto 如下

public class SaveEntryDto implements Comparable<SaveEntryDto> {
    private String id;
    private String idRef;
    private WER wer;
    @Min(0)
    @Max(1440)
    private Integer kjh;
    @Min(0)
    @Max(1440)
    private Integer gfd;
    private String abc;
    private Double def;
    private String ghi;
    private Boolean klm = Boolean.FALSE;
    private Boolean hug;
    private Boolean qwe;
    private Double azx;
    private Double xds;
    private Boolean cvf = Boolean.FALSE;
    private Boolean bgh = Boolean.FALSE;
    private String nmj;
    private Boolean rgh;
    private Boolean jkh;
    private Boolean mkl = Boolean.FALSE;
    private Boolean wed = Boolean.FALSE;
    private Long ftu;
    private XYZ xyzxd;
    private String klp;
    private ABC xxz;
    private Boolean llo;
    private Long iop;
    private Double poi;
    private Boolean uyt = Boolean.FALSE;
    private Boolean rew = Boolean.FALSE;
    private String qsd;
}

Answer 1

嘗試server.tomcat.connection-timeout而不是server.connection-timeout 。 出於某種原因，有很多提到server.connection-timeout ，但我認為它沒有任何作用（根據https://docs.spring.io/spring-boot/docs/current/reference/html/application-屬性.html ）。

server.tomcat.connection-timeout=30000 - 這會將超時設置為 30 秒