当在HTTp请求中没有显式指定字符集属性，并且无法通过检查encoding .properties确定输入代码集时，请使用这个属性。
It is used when the charset attribute is not explicitly specified in the HTTP request and the input code set cannot be determined by examining the encoding.properties.
如果没有在HTTp请求或响应中显式指定字符集(charset)属性，那么ApplicationServer将查看上述编码属性文件来选择字符集。
When the charset attribute is not explicitly specified in the HTTP request or response, Application Server looks at the encoding properties file to select the character set.
为了确定请求和响应使用什么字符集，您需要在一个文件和一个系统属性中指定所支持的语言。
You need to specify the supported languages in a file and in a system property, in order to determine the character set of the request and the response.
另外，URLEncoder和URLDecoder类都支持使用程序员指定的字符集进行编码和解码。
In addition, the URLEncoder and URLDecoder classes support working with programmer-specified character sets for encoding and decoding.
使用连字号内的字符集，以指定一个范围。
含有参数的该函数用来清除原对象后面的指定的字符或字符集。
Use the versions of this function that accept parameters to remove a particular character or a particular group of characters from the end of a string.
如果在CREATETABLE语句中没有指定表字符集和校对规则，则使用数据库字符集和校对规则作为默认值。
The database character set and collation are used as default values if the table character set and collation are not specified in CREATE table statements.
如果在CREATETABLE语句中没有指定表字符集和校对规则，则使用数据库字符集和校对规则作为默认值。
The database character set and collation are used as default values if the table character set and collation are not specified in CREATE table statements.
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