Resolved [org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: javax/xml/bind/DatatypeConverter]

这个问题通常发生在 Java 9 或更高版本中，因为在这些版本中，javax.xml.bind.DatatypeConverter 类已被标记为弃用。解决此问题的一种方法是在项目的 classpath 中添加 javax.xml.bind 的依赖。你可以使用以下 Maven 依赖项解决此问题：

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.1</version>
</dependency>

如果使用的是 Gradle，则可以使用以下依赖项：

implementation 'javax.xml.bind:jaxb-api:2.3.1'

如果你使用的是 Java 11 或更高版本，则需要添加以下 VM 参数：

--add-modules java.xml.bind

这应该可以解决这个问题。

相关问题

org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError:

org/springframework/web/servlet/DispatcherServlet

This exception is thrown when the handler dispatch fails in a Spring web application. The nested exception, java.lang.NoClassDefFoundError, indicates that a class required by the application could not be found at runtime.

In this specific case, the missing class is org.springframework.web.servlet.DispatcherServlet. This class is part of the Spring MVC framework and is responsible for handling requests in a web application.

To resolve this issue, you need to ensure that the necessary Spring MVC dependencies are present in your application's classpath. Make sure that you have included the required Spring MVC JAR files in your project's dependencies or build configuration.

If you are using a dependency management tool like Maven or Gradle, you can add the necessary dependencies to your project's configuration file. For example, in Maven, you can add the following dependency to your pom.xml file:

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>{version}</version>
</dependency>

Replace `{version}` with the desired version of the Spring framework.

If you are not using a dependency management tool, you will need to manually download the required JAR files and add them to your project's classpath.

Once you have ensured that the necessary dependencies are present, rebuild and redeploy your application to see if the issue is resolved.

Resolved [org.springframework.web.method.annotation.MethodArgumentConversionNotSupportedException: Failed to convert value of type 'org.springframework.web.multipart.support.StandardMultipartHttpServletRequest$StandardMultipartFile' to required type 'org.springframework.web.multipart.commons.CommonsMultipartFile'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'org.springframework.web.multipart.support.StandardMultipartHttpServletRequest$StandardMultipartFile' to required type 'org.springframework.web.multipart.commons.CommonsMultipartFile': no matching editors or conversion strategy found]

这是一个 Spring 框架中的异常错误，表示在请求中的文件上传过程中，类型转换失败。具体来说，是将类型为 `org.springframework.web.multipart.support.StandardMultipartHttpServletRequest$StandardMultipartFile` 的对象转换为类型为 `org.springframework.web.multipart.commons.CommonsMultipartFile` 的对象时失败了。错误信息中指出没有匹配的编辑器或转换策略。

解决这个问题的方法是，确保在代码中使用的文件上传组件是 `org.springframework.web.multipart.commons.CommonsMultipartFile` 类型的。如果使用的是其他类型的上传组件，需要进行类型转换或者更改上传组件的类型。另外，还需要确保上传的文件符合要求，例如文件大小、文件类型等。