Biegral Blog

Java打印工具类，实现格式化输出以及二进制输出效果图如下：

package com.wiker;


import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;


public class Print {
	private static final String TAG = Print.class.getSimpleName();
	public static boolean isDebug=true;
	static public void printStr(String tag, String body)
	{
		if(isDebug)
			System.out.println(tag+" "+body);
//			Log.i(tag, body);
	}
	
	public static void printStr(byte[] ba, int len)
	{
		printStr(TAG, ba, len);
	}
	public static void printStr(byte[] ba)
	{
		printStr(TAG, ba, ba.length);
	}
	public static void printStr(Object obj)
	{
		printStr(TAG, String.valueOf(obj));
	}
	public static void printStr(String tag, Object obj)
	{
		printStr(tag, String.valueOf(obj));
	}

	public static void printStr(String tag, byte[] ba, int len)
	{
		if(!isDebug)
			return;
		String s;
        try {
	        s = new String(ba, 0, len, "utf-8");
	        printStr(tag, s);
        } catch (UnsupportedEncodingException e) {
	        e.printStackTrace();
        }
	}
	public static void printHex(byte[] dataStr_cp, int dataLen_n)
	{
		printHex(TAG, dataStr_cp, dataLen_n);
	}
	public static void printHex(byte[] dataStr_cp)
	{
		printHex(TAG, dataStr_cp, dataStr_cp.length);
	}
	public static void printHex(String tag, byte[] dataStr_cp, int dataLen_n)
	{
		printHex(tag, dataStr_cp, 0, dataLen_n);
	}
	
	public static void printHex(String tag, byte[] dataStr_cp, int start, int dataLen_n)
	{
		if(!isDebug)
			return;
	    int i=0, j=0;
	    int lineCnt_n = 0;
	    try {
	    	byte[] set=new String("0123456789ABCDEF").getBytes("utf-8");

		    if(dataLen_n==0)
		        return;

		    if(dataLen_n%16!=0)
		    	lineCnt_n = dataLen_n/16 + 1;
		    else
		    	lineCnt_n = dataLen_n/16;

		    String p=new String("--------------------------- Raw data ---------------------------");
		    printStr(tag, p.getBytes("utf-8"), p.length());

		    for(i=0; i<lineCnt_n; i++)
		    {
		    	byte[] lineStr_ca=new byte[128];
		        for(j=0; j<16; j++)
		        {
		            if(i*16+j<dataLen_n)
		            {
		            	if(dataStr_cp[start+i*16+j]<0)
		            	{
			                lineStr_ca[j*3]   = set[ (byte)((dataStr_cp[start+i*16+j]&0x7f+128) >> 4) ];
			                lineStr_ca[j*3+1] = set[ (byte)((dataStr_cp[start+i*16+j]&0x7f+128) & 0xF) ];
		            	}
		                else
		                {
		                	lineStr_ca[j*3]   = set[ ((byte)dataStr_cp[start+i*16+j]) >> 4 ];
			                lineStr_ca[j*3+1] = set[ ((byte)dataStr_cp[start+i*16+j]) & 0xF ];
		                }
		                lineStr_ca[j*3+2] = ' ';
		            }
		            else
		            {
		                lineStr_ca[j*3]   = ' ';
		                lineStr_ca[j*3+1] = ' ';
		                lineStr_ca[j*3+2] = ' ';
		            }
		        }
		        lineStr_ca[16*3] = ';';
		        lineStr_ca[16*3+1] = ' ';

		        //cursor pos 16*3+2= 50
		        for(j=0; j<16; j++)
		        {
		            if(i*16+j<dataLen_n)
		            {
		                if (dataStr_cp[start+i*16+j]>=0x20 && dataStr_cp[start+i*16+j] <= 0x7e && dataStr_cp[start+i*16+j]!='%')
		                    lineStr_ca[50+j] = (byte)dataStr_cp[start+i*16+j];
		                else
		                    lineStr_ca[50+j] = '.';
		            }
		            else
		                lineStr_ca[50+j] = ' ';
		        }

		        printStr(tag, lineStr_ca, 50+j);
		    }
        } catch (Exception e) {
        }
	}
	
	public static void logException(Exception e)
	{
		StringWriter sw = new StringWriter();
		PrintWriter pw = new PrintWriter(sw);
		e.printStackTrace(pw);
		printStr(sw.toString());
	}
	
	public static void logException(String tag, Exception e)
	{
		StringWriter sw = new StringWriter();
		PrintWriter pw = new PrintWriter(sw);
		e.printStackTrace(pw);
		printStr(tag, sw.toString());
	}
	
	static public void printDate(String tag, long ms)
	{
		if(!isDebug)
			return;
		Date date = new Date(ms);
		SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss SSS");
		printStr(tag, "printDate="+String.valueOf(ms)+";date="+simpleDateFormat.format(date));
	}
	
	static public void printFunc()
	{
	    StackTraceElement[] ste=new Exception().getStackTrace();
	    String methodName =   ste[1].getMethodName();
	    String clsName =   ste[1].getClassName();
	    clsName=clsName.substring(clsName.lastIndexOf('.')+1);
	    printStr(clsName, methodName);
	}

}