private int trasRate(String star){
		int starInt = -1;
		if(star.equals("非常好")){
			starInt =4;
		}else if(star.equals("很好")){
			starInt =3;
		}else if(star.equals("好")){
			starInt =2;
		}else if(star.equals("一般")){
			starInt =1;
		}else if(star.equals("差")){
			starInt =0;
		}
		return starInt;
	}