Scratch returns 400

• scene
  Use scrapy Capture data , The parameters to be passed are Request Payload Parameters , Use Resquest send out post request
• The code is as follows
  This is to return 400 Code for

yield scrapy.Request(url=url,
             method="POST",
             headers={
    "Content-Type":"application/json","Host":"web.hi-teeth.com","Content-Length":"18"},
             encoding="utf-8",
             body=json.dumps({
    "key":"value"}),
             dont_filter=True,
             callback= Callback function )

• reason
  In the header information "Content-Length":"18" Error message caused by , Just cancel it , Personal tasks may be limited to 18 Error causing insufficient length

• Solution
  Remove... From the header message "Content-Length" that will do

Correct code

yield scrapy.Request(url=url,
             method="POST",
             headers={
    "Content-Type":"application/json","Host":"web.hi-teeth.com"},
             encoding="utf-8",
             body=json.dumps({
    "key":"value"}),
             dont_filter=True,
             callback= Callback function )

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