public static void main(String[] args) throws UnsupportedEncodingException {
String a = "江���扬州高邮捍海路消防站5G布控球";
String b = "江苏连云港海州区花果山特勤站5G布控球";
if (java.nio.charset.Charset.forName("GBK").newEncoder().canEncode(a)) {
System.out.println("无乱码");
} else {
System.out.println("GBK格式数据");
}
}