在一个项目中开发前端的同事使用Vue开发了一个上传文件的模块，但是无论如何就是无法提交这种POST请求给后台服务， 具体的现象就是，前端界面上传文件时， Content-Type总是application/x-www-form-urlencoded，然后SpringBoot的后台服务就报错：Current is not a multipart request.表示这个请求错误。
Run Behavior\BuildLiteBehavior [ RunTime:0.000006s ]
[ app_init ] --END-- [ RunTime:0.000033s ]
[ app_begin ] --START--
Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000284s ]
[ app_begin ] --END-- [ RunTime:0.000307s ]
[ view_parse ] --START--
[ template_filter ] --START--
Run Behavior\ContentReplaceBehavior [ RunTime:0.000071s ]
[ template_filter ] --END-- [ RunTime:0.000102s ]
Run Behavior\ParseTemplateBehavior [ RunTime:0.011996s ]
[ view_parse ] --END-- [ RunTime:0.012023s ]
[ view_filter ] --START--
Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000194s ]
[ view_filter ] --END-- [ RunTime:0.000216s ]
[ app_end ] --START--
1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`pid`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( pid= )
