文件内容：

1饭钱1000
2房租2000
3请客500
4修车700
5买礼物600
6在58同城会员注册199
10熬夜写代码50
12朋友结婚礼钱1000
23American电影160
191路上913公交丢钱200

package com.briup.exam;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Test {
	public static void main(String[] args) throws IOException {

		Record rd = new Record();
		BufferedReader br = new BufferedReader(new FileReader("4.txt"));

		String s;
		while ((s = br.readLine()) != null) {
			char[] arr = s.toCharArray();
			int len = arr.length;
			int startInfo = loopNumber(arr, rd);
			int endInfo= loopMoney(arr, len, rd);
			loopWhere(arr, startInfo, endInfo, rd);
			System.out.println(rd.toString());
		}
		rd.print();
		br.close();
	}
	
	//循环取出【消费序列号】字段数据的方法
	public static int loopNumber(char[] arr,Record rd){
		String number = "";
		int index = 0;
		while(Character.isDigit(arr[index])){
			number += arr[index];
			index++;
		}
		rd.setPayNumber(Integer.parseInt(number));
		number = "";
		return index;
	}
	
	//循环取出【消费去向】字段数据的方法
	public static void loopWhere(char[] arr,int startInfo,int endInfo,Record rd){
		String where = "";
		for(int i=startInfo;i<endInfo;i++){
			where += arr[i]; 
		}
		rd.setPayWhere(where);
		where = "";
	}
	
	//循环取出【消费金额】字段数据的方法
	public static int loopMoney(char[] arr,int len,Record rd){
		String money = "";
		int index = len;
		while(Character.isDigit(arr[index-1])){
			money = arr[index-1] + money;
			index--;
		}
		rd.setPayMoney(Integer.parseInt(money));
		rd.add(Integer.parseInt(money));
//		System.out.println(rd.add(Integer.parseInt(money)));	
		money = "";
		return index;
	}
	
	
}

class Record {
	private int payNumber;
	private String payWhere;
	private int payMoney;
	private int sum;

	public Record() {
	}
	
	public Record(int payNumber, String payWhere, int payMoney) {
		this.payMoney = payMoney;
		this.payNumber = payNumber;
		this.payWhere = payWhere;
	}

	public int getPayNumber() {
		return payNumber;
	}

	public void setPayNumber(int payNumber) {
		this.payNumber = payNumber;
	}

	public String getPayWhere() {
		return payWhere;
	}

	public void setPayWhere(String payWhere) {
		this.payWhere = payWhere;
	}

	public int getPayMoney() {
		return payMoney;
	}

	public void setPayMoney(int payMoney) {
		this.payMoney = payMoney;
	}

	public int add(int payMoney) {
		sum += payMoney;
		return sum;
	}

	public void print() {
		System.out.println("本次消费总额: " + sum);
	}

	@Override
	public String toString() {
		return payNumber + "." + payWhere + "  " + payMoney;
	}

}