A.GET /test/hi-there.txt HTTP/1.0B.GET /test/hi-there.txt 200C.GET http://test/hi-there.txt HTTP/1.0D.HTTP/1.0200OK
A.LocationB.RefreshC.RefererD.If-Modified-Since
A.可以把任意類型變量轉(zhuǎn)成JSON數(shù)據(jù)B.只能接受UTF-8編碼的數(shù)據(jù)C.編碼成功返回一個(gè)以JSON形式表示的字符串,否則返回FALSED.二維數(shù)組也可以被轉(zhuǎn)成JSON格式的數(shù)組