JAVA：附加码生成器（图片）
〔Picture.Java〕
package creator.common.attachLogin;
import java.io.*;
public class Picture{
final int key=1;
final String error_format_int= "format of color is not rgb.sample \"2122320\"";
final String error_color_input="format of color(numnumnum): num in 0-255";
/**格式化输出数据**/
public String manage(String temp){
String returnStr="";
temp = encrypt(temp);
byte[] by =temp.getBytes();
for(int i=0;i<by.length;i++){
returnStr=returnStr+(byte)by[i]+"";
}
return returnStr;
}
/**格式化输入数据**/
public byte[] disManage(String temp){
int len=0,index=0,i=0,first=0;
while(( i=temp.indexOf("",first))>-1){
len++;
first=i+1;
}
byte[] by=new byte[len];
first=0;
while(( i=temp.indexOf("",first))>-1){
by[index]=Byte.parseByte(temp.substring(first,i));
index++;
first=i+1;
}
return by;
}
/**随机生成四位的附加码**/
public String getRandom(){
int i1 = (int)(java.lang.Math.random()*10);
int i2 = (int)(java.lang.Math.random()*10);
int i3 = (int)(java.lang.Math.random()*10);
int i4 = (int)(java.lang.Math.random()*10);
return String.valueOf(i1)+String.valueOf(i2)+String.valueOf(i3)+String.valueOf(i4);
}
/**加密1：错位处理**/
public String encrypt(String randomStr){
String para=random()+randomStr.substring(0,1)+random()+random()+randomStr.substring(1,2);
para= para+random()+randomStr.substring(2);
return jiaMi(para);
}
/**得到随机数0-9之间**/
private String random(){
String temp = String.valueOf((int)(java.lang.Math.random()*10));
return temp;
}
/**加密2：加密处理，此方法可以自己修改**/
private String jiaMi(String str){
byte[] by = str.getBytes();
ByteArrayInputStream in = new ByteArrayInputStream(by);
int ch;
int index=0;
byte[] temp = new byte[in.available()];
while((ch=in.read())!=-1){
temp[index]=(byte)(ch-key);
index++;
}