以下是一个使用Java生成销售管理系统的示例代码，实现了您提到的功能：
```java
import java.io.*;
import java.util.*;
public class SalesSystem {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String fileName = "sales.txt";
SalesData salesData = new SalesData(fileName);
while (true) {
System.out.println("1. 计算销售额");
System.out.println("2. 排序销售员");
System.out.println("3. 排序产品");
System.out.println("4. 输出统计报表");
System.out.println("5. 退出");
System.out.print("请输入您的选择: ");
int choice = scanner.nextInt();
switch (choice) {
case 1:
salesData.calculateSales();
break;
case 2:
salesData.sortSalesmen();
break;
case 3:
salesData.sortProducts();
break;
case 4:
salesData.outputReport();
break;
case 5:
System.exit(0);
break;
default:
System.out.println("无效的输入，请重新输入。");
}
}
}
}
class SalesData {
private List<Salesman> salesmen;
private List<Product> products;
private Map<Integer, Salesman> salesmanMap;
private Map<Integer, Product> productMap;
public SalesData(String fileName) {
salesmen = new ArrayList<>();
products = new ArrayList<>();
salesmanMap = new HashMap<>();
productMap = new HashMap<>();
try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) {
String line;
while ((line = reader.readLine()) != null) {
String[] data = line.split(",");
int salesmanId = Integer.parseInt(data[0]);
int productId = Integer.parseInt(data[1]);
