文件上传 解决413错误

场景：

文件上传时，接口报错413。

查看nginx的日志：

2022/09/09 07:02:18 [error] 10#10: *6 client intended to send too large body: 3501022 bytes, client: 192.168.7.1, server: data-dispatch-center, request: "POST /api/v1/app/form/excel_import?nonce=p3cNGR&timestamp=1662678138.514602 HTTP/1.1", host: "10.11.206.141:3121"
2022/09/09 07:02:23 [error] 10#10: *7 client intended to send too large body: 3501022 bytes, client: 192.168.7.1, server: data-dispatch-center, request: "POST /api/v1/app/form/excel_import?nonce=p3cNGR&timestamp=1662678138.514602 HTTP/1.1", host: "10.11.206.141:3121"
2022/09/09 07:02:28 [error] 10#10: *8 client intended to send too large body: 3501022 bytes, client: 192.168.7.1, server: data-dispatch-center, request: "POST /api/v1/app/form/excel_import?nonce=p3cNGR&timestamp=1662678138.514602 HTTP/1.1", host: "10.11.206.141:3121"
2022/09/09 08:23:15 [error] 10#10: *13 client intended to send too large body: 3432243 bytes, client: 192.168.7.1, server: data-dispatch-center, request: "POST /api/v1/app/form/excel_import?nonce=pszvLM&timestamp=1662682994.933834 HTTP/1.1", host: "10.11.206.141:3121"
2022/09/09 08:23:20 [error] 10#10: *14 client intended to send too large body: 3432243 bytes, client: 192.168.7.1, server: data-dispatch-center, request: "POST /api/v1/app/form/excel_import?nonce=pszvLM&timestamp=1662682994.933834 HTTP/1.1", host: "10.11.206.141:3121"
2022/09/09 08:23:25 [error] 10#10: *15 client intended to send too large body: 3432243 bytes, client: 192.168.7.1, server: data-dispatch-center, request: "POST /api/v1/app/form/excel_import?nonce=pszvLM&timestamp=1662682994.933834 HTTP/1.1", host: "10.11.206.141:3121"
 

问题排查： 

nginx 配置文件中的client_max_body_size是控制请求body的大小限制的参数，默认为1MB，如果超过这个数值，则会直接返回413状态码。

问题解决：

修改nginx配置文件并重启

http {
    client_max_body_size 20M;
}  

问题解决！