utfstring.java

一个在ie实现文件上传下载的程序

package utf;

public class UtfString {
	 private String zhstr;
	    
	    private String utfstr;
	    
	    public void setzhstr(String str)
	    {
	        this.zhstr=str;
	    }
	    
	    public void setutfstr(String str)
	    {
	        this.utfstr=str;
	    }
	    
	    public String getzhstr()
	    {
	        return this.zhstr;
	    }
	    
	    public String getutfstr()
	    {
	        return this.utfstr;
	    }
	    
	    public void toUtf8String() {
	         StringBuffer sb = new StringBuffer();
	        
	         for (int i=0;i<this.zhstr.length();i++) {
	             char c = this.zhstr.charAt(i);
	             if (c >= 0 && c <= 255) {
	                      sb.append(c);
	             } else {
	                    byte[] b;
	                     try {
	                              b = Character.toString(c).getBytes("utf-8");
	                          } 
	                            catch (Exception ex) 
	                          {
	                                    System.out.println(ex);
	                                     b = new byte[0];
	                          }
	                          for (int j = 0; j < b.length; j++) {
	                                 int k = b[j];
	                                 if (k < 0) k += 256;
	                                 sb.append("%" + Integer.toHexString(k).
	                                 toUpperCase());
	                           }
	                  }
	         }
	         
	         this.setutfstr(sb.toString());
	    }


}