上传图片提示runtime error: invalid memory address or nil pointer dereference

[TurboHsu]

Question（提问）

Build了dev分支的源码，上传图片提示如下

TurboCloud-IMG:runtime error: invalid memory address or nil pointer dereference

Request Method: | POST
-- | --
Request URL: | /api/v1/web_upload
RemoteAddr: | ***********************

/usr/lib/golang/src/runtime/panic.go:679
/usr/lib/golang/src/runtime/panic.go:199
/usr/lib/golang/src/runtime/signal_unix.go:394
/root/go/pkg/mod/github.com/astaxie/[email protected]/controller.go:557
/usr/lib/golang/src/reflect/value.go:460
/usr/lib/golang/src/reflect/value.go:321
/root/go/pkg/mod/github.com/astaxie/[email protected]/router.go:853
/usr/lib/golang/src/net/http/server.go:2802
/usr/lib/golang/src/net/http/server.go:1890
/usr/lib/golang/src/runtime/asm_amd64.s:1357

后端抛这个

2020/06/14 11:18:55.113 [C] [panic.go:679]  the request url is  /api/v1/web_upload
2020/06/14 11:18:55.113 [C] [panic.go:679]  Handler crashed with error runtime error: invalid memory address or nil pointer dereference
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/runtime/panic.go:679
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/runtime/panic.go:199
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/runtime/signal_unix.go:394
2020/06/14 11:18:55.113 [C] [panic.go:679]  /root/go/pkg/mod/github.com/astaxie/[email protected]/controller.go:557
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/reflect/value.go:460
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/reflect/value.go:321
2020/06/14 11:18:55.113 [C] [panic.go:679]  /root/go/pkg/mod/github.com/astaxie/[email protected]/router.go:853
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/net/http/server.go:2802
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/net/http/server.go:1890
2020/06/14 11:18:55.113 [C] [panic.go:679]  /usr/lib/golang/src/runtime/asm_amd64.s:1357

这个问题在2.3.9的源码build中发现上传小的图片不会报错，大图就gg