Servlet.service() for servlet [dispatcherServlet] in context with path [/blog] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.impl.FileSizeLimitExceededException: The field headerImage exceeds its maximum permitted size of 1048576 bytes.] with root cause

这个异常表示上传文件的大小超过了服务器所允许的最大值，具体来说，是 `headerImage` 这个字段的大小超过了 1048576 字节（即 1 MB）。因此，你需要增加服务器允许上传文件的大小限制。

在 Spring Boot 中，可以在 `application.properties` 或 `application.yml` 配置文件中，添加如下配置来增加文件上传大小限制：

application.properties

spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB

application.yml

spring:
  servlet:
    multipart:
      max-file-size: 10MB
      max-request-size: 10MB

上面的配置将允许上传最大为 10MB 的文件。你可以根据实际情况进行调整。如果你的上传文件大小仍然超过了这个限制，你需要再次增加限制或者采取其他措施，例如将文件上传分成多个部分等。

相关问题

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception

根据提供的引用内容， Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is （这里是包名）] with root cause. Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause.和44.892 ERROR 13764 --- [nio-8081-exec-9] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed;... ，我可以告诉你的是这是一个关于Servlet的异常信息。具体来说，是当在处理请求时，由于某种原因导致了异常。异常的具体原因可能是包名（引用中的内容），也可能是java.lang.NullPointerException（引用中的内容）。这个异常信息表明在处理请求时发生了错误，导致请求处理失败（引用中的内容）。根据提供的信息，无法确定具体的异常原因，需要进一步的调查和排查才能确定问题的根本原因。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* [异常报错：Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception](https://blog.csdn.net/Alian_auerua/article/details/129633633)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *3* [Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception](https://download.csdn.net/download/weixin_38517997/14852674)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]

Servlet.service() for servlet [dispatcherServlet] in context with path [/auth] threw exception [Request processing failed;

根据引用，异常信息显示为"Servlet.service() for servlet [dispatcherServlet in context with path [] threw exception [Request processing failed; nested exception is feign.RetryableException: Connection reset executing GET http://caas-api-svc/tenants with root cause"。根据这个异常信息，问题可能出在与feign.RetryableException相关的连接重置错误。然而，根据引用，这种异常可能是由于Response流的问题引起的。如果Response流已经被读取一次，那么再次尝试读取它时就会出现流相关的异常。在这种情况下，可能是由于调试过程中隐式调用了Response的toString方法，该方法会读取Response中的流，导致再次尝试读取时出现异常。引用中的代码示例说明了在调试模式下，Idea会隐式调用对象的toString方法来显示对象的值。因此，在排查这个问题时，可以检查是否存在调试模式下隐式调用了toString方法的情况，并查看是否有其他代码读取了Response流。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request p](https://blog.csdn.net/u014259503/article/details/125540173)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [nested exception is feign.FeignException: stream is closed reading](https://blog.csdn.net/CSDN877425287/article/details/126476201)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]