wxya（个人网站）pipe
内置
Nest comes with nine pipes available out-of-the-box:Nest 附带九个开箱即用的管道：
ValidationPipe
ParseIntPipe
ParseFloatPipe
ParseBoolPipe
ParseArrayPipe
ParseUUIDPipe
ParseEnumPipe
DefaultValuePipe
ParseFilePipe
They're exported from the
@nestjs/common package.它们是从 @nestjs/common 包中导出的。自定义
兼容json传参，raw 传参，json 为字符串传参
nestjs @body if data is string type, use json parse
nestjs@body如果数据是字符串类型，则使用json解析
参考
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