📄 decode.java
字号:
//package mypub;
import java.io.*;
public class Decode
{
static int num=0;
public char DecodeAscII(String hex) //八位，一个字节，
{
StringToInt to=new StringToInt();
int i=to.HexStringToInt(hex);//调用HexStringToInt
return (char)i;
}
public String DecodeGB2312(String in)
{
StringToInt to=new StringToInt();
String a=String.valueOf(in.charAt(0));
String b=String.valueOf(in.charAt(1));
String hex=a+b;
int i=to.HexStringToInt(hex);
String c=String.valueOf(in.charAt(2));
String d=String.valueOf(in.charAt(3));
hex=c+d;
int j=to.HexStringToInt(hex);
byte bytes[] = {(byte)i,(byte)j};
String s="";
try
{
s=new String(bytes,"gb2312");
}
catch(UnsupportedEncodingException e)
{
System.out.println (e.toString());
}
return s;
}
public String Decodebig5(String in)
{
StringToInt to=new StringToInt();
String a=String.valueOf(in.charAt(0));
String b=String.valueOf(in.charAt(1));
String hex=a+b;
int i=to.HexStringToInt(hex);
String c=String.valueOf(in.charAt(2));
String d=String.valueOf(in.charAt(3));
hex=c+d;
int j=to.HexStringToInt(hex);
byte bytes[] = {(byte)i,(byte)j};
String s="";
try
{
s=new String(bytes,"big5");
}
catch(UnsupportedEncodingException e)
{
System.out.println (e.toString());
}
return s;
}
public String DecodeUTF(String s) //传过来的是16进制
{
UnicodeStringToInt toInt=new UnicodeStringToInt();
String r="";
int len=s.length();
for(int i=0;i<len;i+=6)
{
String temp="";
String a=String.valueOf(s.charAt(i+0));
String b=String.valueOf(s.charAt(i+1));
String hex=a+b;
int x=toInt.UnicodeStringToInt(hex);
a=String.valueOf(s.charAt(i+2));
b=String.valueOf(s.charAt(i+3));
hex=a+b;
int y=toInt.UnicodeStringToInt(hex);
a=String.valueOf(s.charAt(i+4));
b=String.valueOf(s.charAt(i+5));
hex=a+b;
int z=toInt.UnicodeStringToInt(hex);
byte bytes[] = {(byte)x,(byte)y,(byte)z};
try
{
temp=new String(bytes,"utf-8");
}
catch(UnsupportedEncodingException e)
{
System.out.println (e.toString());
}
r=r+temp;
}
return r;
}
public String ToDecode(String input) //第一步
{
Decode d=new Decode();
String result="",h="";
if(input=="")return result;
int count=0;
int len=input.length();
String hex[]=new String[len/2];
EncodeMethod m=new EncodeMethod(); //EncodeMethod
String method=m.method(input);
int num=0;
for(int i=0;i<input.length();i+=2)
{ String temp="";
temp=temp+String.valueOf(input.charAt(i));
temp=temp+String.valueOf(input.charAt(i+1));
hex[num]=temp;//num表示字节的个数
num++;
}
if(method=="big5")
{
for(int j=0;j<num;j++)//每次加一个字节
{
char c=hex[j].charAt(0);
char e=hex[j].charAt(1);
switch(c)
{
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
{
int i=j+1;
char u=hex[i].charAt(0);
char v=hex[i].charAt(1);
if(u>='4'&&u<='7'||u>='A'&&u<='F')
{
String str=hex[j]+hex[i];//两个字节16位，呵呵
result=result+d.Decodebig5(str);
}
else
{
result=result+d.DecodeAscII(hex[j]);
result=result+d.DecodeAscII(hex[i]);
}
++j;
} break;//为什么是高8位是从8开始呢？因为0x80~0xFF是中文字符表示范围
default:result=result+d.DecodeAscII(hex[j]);break;
}
}
}
if(method=="gb2312")
{
for(int j=0;j<num;j++)
{
char c=hex[j].charAt(0);
switch(c)
{
// case '8':
// case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
{
count++;
if((count%2)!=0)
{
if(j<num-1)
{
String str=hex[j]+hex[j+1];//两个字节16位，呵呵
result=result+d.DecodeGB2312(str);
}
}
} break;//为什么是高8位是从8开始呢？因为0x80~0xFF是中文字符表示范围
default:result=result+d.DecodeAscII(hex[j]);break;
}
}
}
if(method=="utf-8")
{
for(int j=0;j<num;j++)
{
char a=hex[j].charAt(0);
char b=hex[j].charAt(1);
switch(a)
{
case'0':h="0000";break;
case'1':h="0001";break;
case'2':h="0010";break;
case'3':h="0011";break;
case'4':h="0100";break;
case'5':h="0101";break;
case'6':h="0110";break;
case'7':h="0111";break;
case'8':h="1000";break;
case'9':h="1001";break;
case'A':h="1010";break;
case'B':h="1011";break;
case'C':h="1100";break;
case'D':h="1101";break;
case'E':h="1110";break;
case'F':h="1111";break;
}
if(h.startsWith("1110"))
{
String str=hex[j]+hex[j+1]+hex[j+2];
result=result+d.DecodeUTF(str);
j+=2;
}
else
result=result+d.DecodeAscII(hex[j]);
}
}
return result;
}
public static void main(String args[])//static 必须在void 之前
{
String input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
Decode d=new Decode();
String result=d.ToDecode(input); //ToDecode
File myFile=new File("result.txt");
try
{
byte[] b=result.getBytes();
FileOutputStream fout=new FileOutputStream(myFile);
fout.write(b);
fout.close();
}
catch(FileNotFoundException e)
{
System.err.println(e);
}
catch(IOException e)
{
System.err.println(e);
}
System.out.println("The Decode result is :\n"+result);
}
}
class StringToInt //被调用
{
public int HexStringToInt(String hex)
{
String a=String.valueOf(hex.charAt(0));
String b=String.valueOf(hex.charAt(1));
char c=hex.charAt(0);
char d=hex.charAt(1);
int h=0;
switch(c)
{
case 'A':h=10*16;break;
case 'B':h=11*16;break;
case 'C':h=12*16;break;
case 'D':h=13*16;break;
case 'E':h=14*16;break;
case 'F':h=15*16;break;
default:h=Integer.parseInt(a)*16;break;
}
switch(d)
{
case 'A':h=h+10;break;
case 'B':h=h+11;break;
case 'C':h=h+12;break;
case 'D':h=h+13;break;
case 'E':h=h+14;break;
case 'F':h=h+15;break;
default:h=h+Integer.parseInt(b);break;
}
return h;
}
}
class UnicodeStringToInt
{
public int UnicodeStringToInt(String hex)
{
String a=String.valueOf(hex.charAt(0));
String b=String.valueOf(hex.charAt(1));
char c=hex.charAt(0);
char d=hex.charAt(1);
int r=0;
switch(c)
{
case 'A':r=r+10*16;break;
case 'B':r=r+11*16;break;
case 'C':r=r+12*16;break;
case 'D':r=r+13*16;break;
case 'E':r=r+14*16;break;
case 'F':r=r+15*16;break;
default:r=r+Integer.parseInt(a)*16;break;
}
switch(d)
{
case 'A':r=r+10;break;
case 'B':r=r+11;break;
case 'C':r=r+12;break;
case 'D':r=r+13;break;
case 'E':r=r+14;break;
case 'F':r=r+15;break;
default:r=r+Integer.parseInt(b);break;
}
return r;
}
}
class EncodeMethod //第二步
{
public String method(String s)
{
Decode de=new Decode(); //调用编码
String result="";
int num=0;
int len=s.length();
String hex[]=new String[len/2];
for(int i=0;i<s.length();i+=2)
{ String temp="";
temp=temp+String.valueOf(s.charAt(i));
temp=temp+String.valueOf(s.charAt(i+1));
hex[num]=temp;
num++;
}
for(int j=0;j<num;j++)
{
result=result+de.DecodeAscII(hex[j]); //调用DecodeAscII
}
int i=result.indexOf("charset=gb2312");
if(i!=-1)
{
System.out.println("charset=gb2312");return "gb2312";
}
i=result.indexOf("charset=utf-8");
if(i!=-1)
{System.out.println("Content-Encoding: utf-8");return "utf-8";
}
i=result.indexOf("charset=big5");
if(i!=-1)
{System.out.println("Content-Encoding: big5");return "big5";
}
return "";
}
}
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -