java 可变参数转换 String...args 成 byte[]...args

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Java 中 String 的可变参数如何转换成 byte[]的可变参数，如下面例子中 obj.functionB 的入参是 byte[]的可变参数，请问如何转换

public void functionA(String...args){

 Object obj = new Object();
 //args 如何转换成 functionB 的入参
 obj.functionB(?);

}

Class Object{

public void functionB(byte[]...args){
       ......
}

}

2 replies • 2016-07-07 20:59:12 +08:00

hpeng

Jul 7, 2016

public class test {

public static void main(String[] args) {
try {
ByteArray(StringArrayToBytesArray("utf8", "abc", "def", "fff", "ddd"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}

public static byte[][] StringArrayToBytesArray(String encoding, String ...strings) throws UnsupportedEncodingException {
byte[][] bytes = new byte[strings.length][];
for (int i=0; i<strings.length; i++) {
bytes[i] = strings[i].getBytes(encoding);
}
return bytes;
}

public static void ByteArray(byte[] ...args) {
System.out.println(args.length);
}
}

shyling

Jul 7, 2016

class M{
void customer(byte[] ...args){};
void convert(String ...args){
List<byte[]> list = Stream.of(args).parallel().flatMap(s->Stream.of(s.getBytes())).collect(Collectors.toList());
byte[][] bs = new byte[list.size()][];
list.toArray(bs);
customer(bs);
}

}