Sunspl

//字符串初始化
public String toString(String str){
 if(str == null){
  str = "";
 }
 if(str.equals("null")){
  str = "";
 }
 str = str.trim();
 return str;
}
//編碼轉(zhuǎn)換
public String toGBK(String str){
 try{
  if(str == null){
   str = "";
  }else{
   str = new String(str.getBytes("ISO-8859-1"),"GBK");
  }
 }catch(Exception e){
  System.out.println("DealString::toGBK(String)運行時出錯："+e;
 }
}
//UTF轉(zhuǎn)換
public String to Utf8String(String src){
 byte[] b = src.getBytes();
 char[] c = new char[b.length];
 for(int i = 0; i < b.length; i++){
  c[i] = (char)(b[i]&0x00FF);
 }
 return new String(c);
}
//字符分隔
public String[] splitStr(String str,char c){
 str += c;
 int n = 0;
 for(int i = 0; i < str.length();i++){
  if(str.charAt(i) == c){
   n ++;
  }
 }
 String out[] = new String[n];
 for(int i = 0; i < n; i++){
  int index = str.indexOf(c);
  out[i] = str.substring(0,index);
  str = str.substring(index+1),str.length());
 }
 return out;
}
//取得系統(tǒng)時間
public String getDateTime(){
 java.text.SimpleDateFormat f = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 String time = f.format(new java.util.Date());
 return time;
}
//字符串替換
public String Replace(String source,String oldString,String newString){
 StringBuffer output = new StringBuffer();
 int lengthOfSource = source.length();
 int lengthOfOld = oldString.length();
 int posStart = 0;
 int pos;
 
 while((pos = source.indexOf(oldString,posStart)) >= 0){
  output.append(source.substring(posStart,pos));
  output.append(newString);
  posStart = pos + lengthOfOld;
 }
 if(posStart < lengthOfSource){
  output.append(source.substring(posStart));
 }
 return output.toString();
}

//日期之差
public long getDaysInterval(Date d1,Date d2){
 return (d2.getTime() - d1.getTime())/86400000;
}
//字符串右格式化
public String toLengthStr(String instr,int len){
 int n = instr.length();
 for(int i = 0; i < (len - n); i++){
  instr = " " + instr;
 }
 return instr;
}
//字符串左格式化
public String toLengthStr(String instr,int len){
 int n = instr.length();
 for(int i = 0; i < (len - n); i++){
  instr = instr + " ";
 }
 return instr;
}
//字符串位長度
public int byteLength(String str){
 return ((str.getBytes()).length);
}
//字符串位截取
public String strByteCopy(String str,int nEnd){
 if(nEnd == 0){
  return "";
 }
 byte[] byteStr = str.getBytes();
 int k = byteStr.length;
 String strSub = new String(byteStr,0,End<k?nEnd:k)
 if(strSub.length() == 0){
  strSub = new String(byteStr,0,nEnd-1);
 }
 return strSub;
}