全角转换成半角

来源：互联网发布：台灯护眼知乎编辑：程序博客网时间：2024/04/25 16:54

import java.io.*;
import EService.Utility.*;
import EService.Resource.*;
import EService.ePlatform.*;
import EService.Utility.*;

/*以下方法适用于unix下*/
public class newtest
{
public static void main(String[] args)
{

     System.out.println(DBC2SBC(DB("aａｂｃｄ阿福福")));
     System.out.println(DBC2SBC("ａｂｃｄ新建文本文档"));
      System.out.println(DBC2SBC("阿福福"));
      System.out.println(DBC2SBC(DB("1111111１２３４５６你好nihao２ｔｔｔｙｙｙ１２３４５６７８９！＠＃＄％︿＆＊（阿福福")));

}

/*屏蔽全角字符，最后替换所有!*/

private static String DBC2SBC(String str)
{       String ret="";

  int k=0;

  for (int i = 0; i < str.length(); i++) {
   int j = str.charAt(i);
System.out.println(j);

   if(i>0){
   k=str.charAt(i-1);
   }

   if((j==163)&&(i%2==0)){
         continue;
   }else
   {//&&((i-1)%2==0)
    if((j>=128)&&(k==163)&&((i-1)%2==0)){
     ret += (char) (j-128);

    }
    else if(j>128)
    {
     }
    else{
    ret += (char) (j);
    }
   }

  }
  ret = UT.strReplace(ret, "!","");
  return ret;

}

/*补齐字符串为偶数位，a变为!a,其他原样输出*/

private static String DB(String str) {
    String ret = "";
    int k = 0;
    for (int i = 0; i < str.length(); i++) {
    System.out.println(i);
      int j = str.charAt(i);
       if(i<(str.length()-1)){
   k=str.charAt(i+1);
   }
   else{
   k=0;
   }
      if (j < 128) {
ret=String.valueOf(new StringBuffer(ret).append("!").append((char)(j)));
      }else
      {

      ret=String.valueOf(new StringBuffer(ret).append((char)(j)).append((char)(k)));
      i=i+1;
      continue;
      }

}
return ret;
}
}