honour response charset in StringDecoder#3453
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Repro: a
String-returning method against a server that repliesContent-Type: text/plain; charset=ISO-8859-1with body byte0xE9.Expected:
é.Actual:
U+FFFD, because the byte is run through a UTF-8 reader.Cause:
StringDecoder.decodereads the body withasReader(Util.UTF_8), so the charsetresponse.charset()already resolves fromContent-Typeis dropped.DefaultDecoderextends it, so this is the default behaviour for every non-UTF-8Stringresponse.Fix: decode with
response.charset(), which already falls back to UTF-8 when none is declared, matching the JSON decoders (jackson,json,fastjson2,jackson-jr).