latin-1 codec cant encode characters in position 42-48: ordinal not in range256　下载文件时候报错

Posted 2020-12-30 renfanzi

 

python后端写下载文件，　这个时候出现了这个错误

latin-1 codec cant encode characters in position 42-48: ordinal not in range256

怎么办：

查起因：　发现文件名有中文名字，　所以导致错误，　编码是latin-1编码， 所以我们需要解码成unicode在编码成latin-1

先看代码：

　　这段代码涉及python转码问题， 一定要注意

                FilePathName = self.get_argument("FilePathName", None) #获取文件名
                FileName = str(FilePathName.split("/")[-1]).strip()　＃　得到文件名
                latinFileName = FileName.encode("utf-8").decode("latin1") # 这句很关键， 要解析成latin-1才OK，这样就不会报错

 

class DownFileHandler(downBaseRequestHandler):
    @tornado.gen.coroutine
    def get(self, *args, **kwargs):

        if self.verifyFlag == 1 and self.status == 0:
            status = 2000

            try:
                FilePathName = self.get_argument("FilePathName", None)
                FilePathName = MyBase64.decryption(unquote(FilePathName)) # 这句是解密
                FileName = str(FilePathName.split("/")[-1]).strip()
                latinFileName = FileName.encode("utf-8").decode("latin1") # 这句很关键， 要解析成latin-1才OK，这样就不会报错
                newFileName = str(int(time.time())) + "." + FileName.split(".")[1] # 第二种方式就是换一个文件名
                self.set_header("Content-Type", "application/x-zip-compressed")
                # -----<或者这么写> ----- #
                # self.set_header("Content-Type", "application/octet-stream")
                self.set_header("Content-Disposition", "attachment; filename=%s" % latinFileName)
                f = open(FilePathName, ‘rb‘)
                while True:
                    b = f.read(8096)
                    if not b:
                        break
                    else:
                        self.write(b)
                self.flush()
                f.close()

            except Exception as e:
                e = FormatErrorCode(e)
                my_log.error(e)
                status = int(e[0])
                self.write(json.dumps(result(status=status)))
            self.finish()
        else:
            self.write(json.dumps(result(status=4005)))
            self.finish()