comexpression.java

一套完整的工商12315的源程序jsp部分在12315里,后台JAVA部分在gs12315src里,没有打包数据库.

       }
       Double db = new Double(temp);
       dInt = db.intValue();//取整数部分
       dDec = ((new Double((Math.abs(temp))*100)).intValue())%100;//取小数部分
       if(input < 0&&dInt==0)
       {
            doubleStr = "-"+String.valueOf(dInt)+"."+String.valueOf(dDec);
       }
       else
       {
            doubleStr = String.valueOf(dInt)+"."+String.valueOf(dDec);
       }
       return doubleStr;
   }
   //////////////////将数据精确到指定的位数/////////////////////////////
   ////////////////////
    public static  String doubleToint(double input,int bit)
   {
       /////////////其中 bit<=14是最好的//////////
       long dInt = 0;
       long dDec = 0;
       String doubleStr = null;
       double temp = 0.00;
       ComExpression cx = null;
       if(bit==0)//小数位数为0 ；
       {
            return String.valueOf(new Double(input).intValue());
       }
       long bit_temp = 10;//
       double carry ;//进位；
       for(int i = 0;i < bit;i++)
       {
           bit_temp = bit_temp*10;
       }
       cx = new ComExpression("5/"+bit_temp);
       String rs = cx.getResultStr();
       carry = new Double(rs).doubleValue();
       if(input < 0)
       {
            temp = 0-(Math.abs(input)+carry);
       }
       else
       {
            temp = input +carry;
       }
       Double db = new Double(temp);
       dInt = db.longValue();//取整数部分
       
       dDec = ((new Double((Math.abs(temp))*(bit_temp/10))).longValue())%(bit_temp/10);//取小数部分
       String dDecStr = String.valueOf(dDec);
       int deffDec = bit - dDecStr.length();
       for(int i = 0;i < deffDec;i++)//补齐小数位数
       {
            dDecStr = "0"+dDecStr;
       }
       if(input < 0&&dInt==0)
       {
            doubleStr = "-"+String.valueOf(dInt)+"."+dDecStr;
       }
       else
       {
            doubleStr = String.valueOf(dInt)+"."+dDecStr;
       }
       return doubleStr;
   }
    public double getResult()
    {
        return result;
    }
    public String getResultStr()
    {
     //   Double db  = new Double(this.resultStr);
      //  double ldb = db.doubleValue();
      //  String  rs = this.floadToint(ldb);  
        return this.resultStr;
      //  return rs;
    }
    public String getError()
    {
        return this.errorStr;
    }
    //////////////////////////////////////////////////////////////////////
    ////////////////////判断操作符的优先级(相对于栈)//////////////////////////////////
    public static String precede(String c1,String c2)
    {
        String op = null;
        switch(c1.charAt(0))
        {
            case '+':
                switch(c2.charAt(0))
                {
                    case '+':
                        op = ">";
                        break;
                    case '-':
                        op = ">";
                        break;
                    case '*':
                        op = "<";
                        break;
                    case '/':
                        op = "<";
                        break;
                    case '(':
                        op = "<";
                        break;
                    case ')':
                        op = ">";
                        break;
                    case '#':
                        op = ">";
                        break;
                   case '^':
                        op = "<";
                        break;
                   case 'c':
                        op = "<";
                        break;
                   case 's':
                        op = "<";
                        break;
                   case 't':
                        op = "<";
                        break;
                   case 'e':
                        op = "<";
                        break;
                   case 'l':
                        op = "<";
                        break;
                }
                break;
            case '-':
                switch(c2.charAt(0))
                {
                    case '+':
                        op = ">";
                        break;
                    case '-':
                        op = ">";
                        break;
                    case '*':
                        op = "<";
                        break;
                    case '/':
                        op = "<";
                        break;
                    case '(':
                        op = "<";
                        break;
                    case ')':
                        op = ">";
                        break;
                    case '#':
                        op = ">";
                        break;
                   case '^':
                        op = "<";
                        break;
                   case 'c':
                        op = "<";
                        break;
                   case 's':
                        op = "<";
                        break;
                   case 't':
                        op = "<";
                        break;
                   case 'e':
                        op = "<";
                        break;
                   case 'l':
                        op = "<";
                        break;
                }
                break;
            case '*':
                switch(c2.charAt(0))
                {
                    case '+':
                        op = ">";
                        break;
                    case '-':
                        op = ">";
                        break;
                    case '*':
                        op = ">";
                        break;
                    case '/':
                        op = ">";
                        break;
                    case '(':
                        op = "<";
                        break;
                    case ')':
                        op = ">";
                        break;
                    case '#':
                        op = ">";
                        break;
                    case '^':
                        op = "<";
                        break;
                    case 'c':
                        op = "<";
                        break;
                   case 's':
                        op = "<";
                        break;
                   case 't':
                        op = "<";
                        break;
                   case 'e':
                        op = "<";
                        break;
                   case 'l':
                        op = "<";
                        break;
                }
                break;
           case '/':
                switch(c2.charAt(0))
                {
                    case '+':
                        op = ">";
                        break;
                    case '-':
                        op = ">";
                        break;
                    case '*':
                        op = ">";
                        break;
                    case '/':
                        op = ">";
                        break;
                    case '(':
                        op = "<";
                        break;
                    case ')':
                        op = ">";
                        break;
                    case '#':
                        op = ">";
                        break;
                    case '^':
                        op = "<";
                        break;
                    case 'c':
                        op = "<";
                        break;
                   case 's':
                        op = "<";
                        break;
                   case 't':
                        op = "<";
                        break;
                   case 'e':
                        op = "<";
                        break;
                   case 'l':
                        op = "<";
                        break;
                }
                break;
            case '(':
                switch(c2.charAt(0))
                {
                    case '+':
                        op = "<";
                        break;
                    case '-':
                        op = "<";
                        break;
                    case '*':
                        op = "<";
                        break;
                    case '/':
                        op = "<";
                        break;
                    case '(':
                        op = "<";
                        break;
                    case ')':
                        op = "=";
                        break;
                    case '^':
                        op = "<";
                        break;
                    case 'c':
                        op = "<";
                        break;
                   case 's':
                        op = "<";
                        break;
                   case 't':
                        op = "<";
                        break;
                   case 'e':
                        op = "<";
                        break;
                   case 'l':
                        op = "<";
                        break;
                }
                break;
            case ')':
                switch(c2.charAt(0))
                {
                    case '+':
                        op = ">";
                        break;
                    case '-':
                        op = ">";
                        break;
                    case '*':
                        op = ">";
                        break;