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public String getStr(String str) {
try {
String tmp = str;
byte[] tmps = tmp.getBytes("ISO8859-1");
String temp = new String(tmps);
return temp;
} catch (Exception e) {
return  "NULL";
}
}
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show variables like 'char%';
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+--------------------------+-------
-----+
| Variable_name            | Value
    |
+--------------------------+-------
-----+
| character_set_client    | gbk
    |
| character_set_connection | gbk
    |
| character_set_database  | gbk
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type Exception report


message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

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