@Test
public void test1() throws Exception {
java.lang.String s1 = "你们好吗";
byte[] bytes = s1.getBytes("utf-8");
System.out.println("字节长度：" + bytes.length);
ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
// hhw:tag 下面的方式读取流的内容是有问题的
byte[] buffer = new byte[10];
int len;
StringBuffer sb = new StringBuffer();
while ((len = bi.read(buffer)) != -1) sb.append(new String(buffer, 0, len, "utf-8"));
System.out.println("得到的支付串：" + sb.toString()); // 得到的字符串是：你们好???
}
public void writeString(java.lang.String s) {
s.getBytes(0, s.length(), buffer, currentOffset);
currentOffset += s.length();
buffer[currentOffset++] = 10;
}