JAVA ASCII码 读入字符串测试
public class RhzfYunTest {
public static void main(String[] args) { int lenSize =6; byte[] line = (byte[])null; byte[] lenBuffer = new byte[lenSize]; String readLine = null;
int messageLength; // lenBuffer[0] = (byte)63;// ? ascii 是63 48 对应 0 57 对应 9 lenBuffer[0] = (byte)63;// ? ascii 是63 48 对应 0 57 对应 9 lenBuffer[1] = (byte)63; lenBuffer[2] = (byte)63; lenBuffer[3] = (byte)32;// 32 对应空字符 lenBuffer[4] = (byte)32; lenBuffer[5] = (byte)32; System.out.println ("Service socketReceiveMsgServe() received messageLength is " + new String(lenBuffer)); messageLength = Integer.valueOf((new String(lenBuffer)).trim()).intValue(); System.out.println ("messageLength : "+ messageLength); } }
运行结果
Service socketReceiveMsgServe() received messageLength is ??? Exception in thread "main" java.lang.NumberFormatException: For input string: "???" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:580) at java.lang.Integer.valueOf(Integer.java:766) at com.idea.rhzf.RhzfYunTest.main(RhzfYunTest.java:25)
