package?hh.com.util;

import?java.awt.Color;
import?java.awt.Font;
import?java.awt.Graphics;
import?java.awt.Graphics2D;
import?java.awt.LinearGradientPaint;
import?java.awt.Paint;
import?java.awt.RenderingHints;
import?java.awt.geom.AffineTransform;
import?java.awt.image.BufferedImage;
import?java.io.File;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.OutputStream;
import?java.util.Arrays;
import?java.util.Random;

import?javax.imageio.ImageIO;

public?class?VerifyCodeUtils{
	
	//使用到Algerian字體，系統(tǒng)里沒有的話需要安裝字體，字體只顯示大寫，去掉了10io幾個容易混淆的字符
	public?static?final?String?VERIFY_CODES?=?“23456789ABCDEFGHJKLMNPQRSTUVWXYZ“;
	private?static?Random?random?=?new?Random（）;


	/**
	?*?使用系統(tǒng)默認(rèn)字符源生成驗證碼
	?*?@param?verifySize	驗證碼長度
	?*?@return
	?*/
	public?static?String?generateVerifyCode（int?verifySize）{
		return?generateVerifyCode（verifySize?VERIFY_CODES）;
	}
	/**
	?*?使用指定源生成驗證碼
	?*?@param?verifySize	驗證碼長度
	?*?@param?sources	驗證碼字符源
	?*?@return
	?*/
	public?static?String?generateVerifyCode（int?verifySize?String?sources）{
		if（sources?==?null?||?sources.length（）?==?0）{
			sources?=?VERIFY_CODES;
		}
		int?codesLen?=?sources.length（）;
		Random?rand?=?new?Random（System.currentTimeMillis（））;
		StringBuilder?verifyCode?=?new?StringBuilder（verifySize）;
		for（int?i?=?0;?i?			verifyCode.append（sources.charAt（rand.nextInt（codesLen-1）））;
		}
		return?verifyCode.toString（）;
	}
	
	/**
	?*?生成隨機驗證碼文件并返回驗證碼值
	?*?@param?w
	?*?@param?h
	?*?@param?outputFile
	?*?@param?verifySize
	?*?@return
	?*?@throws?IOException
	?*/
	public?static?String?outputVerifyImage（int?w?int?h?File?outputFile?int?verifySize）?throws?IOException{
		String?verifyCode?=?generateVerifyCode（verifySize）;
		outputImage（w?h?outputFile?verifyCode）;
		return?verifyCode;
	}
	
	/**
	?*?輸出隨機驗證碼圖片流并返回驗證碼值
	?*?@param?w
	?*?@param?h
	?*?@param?os
	?*?@param?verifySize
	?*?@return
	?*?@throws?IOException
	?*/
	public?static?String?outputVerifyImage（int?w?int?h?OutputStream?os?int?verifySize）?throws?IOException{
		String?verifyCode?=?generateVerifyCode（verifySize）;
		outputImage（w?h?os?verifyCode）;
		return?verifyCode;
	}
	
	/**
	?*?生成指定驗證碼圖像文件
	?*?@param?w
	?*?@param?h
	?*?@param?outputFile
	?*?@param?code
	?*?@throws?IOException
	?*/
	public?static?void?outputImage（int?w?int?h?File?outputFile?String?code）?throws?IOException{
		if（outputFile?==?null）{
			return;
		}
		File?dir?=?outputFile.getParentFile（）;
		if（!dir.exists（））{
			dir.mkdirs（）;
		}
		try{
			outputFile.createNewFile（）;
			FileOutputStream?fos?=?new?FileOutputStream（outputFile）;
			outputImage（w?h?fos?code）;
			fos.close（）;
		}?catch（IOException?e）{
			throw?e;
		}
	}
	
	/**
	?*?輸出指定驗證碼圖片流
	?*?@param?w
	?*?@param?h
	?*?@param?os
	?*?@param?code
	?*?@throws?IOException
	?*/
	public?static?void?outputImage（int?w?int?h?OutputStream?os?String?code）?throws?IOException{
		in

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????7613??2014-04-02?23:37??VerifyCodeUtils.java

?????文件??????75272??1999-10-29?12:42??ALGER.TTF

-----------?---------??----------?-----??----

????????????????82885????????????????????2