项目最开始的依赖
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form-spring</artifactId>
<version>3.0.3</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
跟踪源码发现content-type会被","或";"进行转换为Map，跟踪代码为org.apache.tomcat.util.http.fileupload.FileUploadBase#getBoundary
截图
在org.apache.tomcat.util.http.fileupload.FileUploadBase.FileItemIteratorImpl#FileItemIteratorImpl抛出异常
请求头中内容为
//用户所调用的接口提交的content-type
multipart/form-data; boundary=--------------------------381278542566024683689443
//经过feign转发请求后的content-type，按英文逗号拆分刚好Map没有boundary为key的值，索引报错
multipart/form-data, multipart/form-data; charset=UTF-8; boundary=16f0f6d2c45
解决方法为修改feign-form的版本
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form-spring</artifactId>
<version>3.6.0</version>
</dependency>
<dependency>
<groupId>io.github.openfeign.form</groupId>
<artifactId>feign-form</artifactId>
<version>3.6.0</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
转载自：https://blog.csdn.net/wqj975005563/article/details/103572705
原文链接：https://blog.csdn.net/wqj975005563/article/details/103572705
