UTF-8编码转换为ISO-9959-1、ISO-9959-1编码转换为UTF-8

UTF-8编码转换为ISO-9959-1

public static String utf8ToIso88591(String str) {
    if (str == null) {
        return str;
    }

    try {
        return new String(str.getBytes("UTF-8"), "ISO-8859-1");
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}

ISO-9959-1编码转换为UTF-8

public static String iso88591ToUtf8(String str) {
    if (str == null) {
        return str;
    }

    try {
        return new String(str.getBytes("ISO-8859-1"), "UTF-8");
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}