Java之String类型的编码方式转换

byte[] getBytes()

byte[] getBytes(String charsetName)

String(byte[] bytes)

String(byte[] bytes, String charsetName  )

 //编码:把文字转换成字节(使用指定的编码)
    public static void main(String[] args) throws Exception {
        String name="我们终会开始,以理想为船只,以笔为武器,以决心为理性,Good luck!";
        //byte[] bytes = name.getBytes();//默认字符集(utf-8);
        byte[] bytes = name.getBytes("GBK");
        System.out.println(bytes.length);
        System.out.println(Arrays.toString(bytes));
 
        //解码:把文字转换成对应的中文形式(编码前 和 编码后的字符集必须一致,否则乱码)
        byte[] bytes1 = name.getBytes();//默认字符集(utf-8);
        System.out.println(bytes.length);
        System.out.println(Arrays.toString(bytes1));
        String rs=new String(bytes1);
        System.out.println(rs);
 
        byte[] bytes2 = name.getBytes("GBK");//默认字符集(utf-8);
        System.out.println(bytes.length);
        System.out.println(Arrays.toString(bytes2));
        String rs1=new String(bytes2,"GBK");
        System.out.println(rs1);
    }