Stream为集合添加序号

public class Test {
 
    public static void main(String[] args) {
        List<User> userList = new ArrayList<>();
        User u1 = new User();
       	u1.setUserName("张三");
      	u1.setPassWord("zhangsan123");
        userList.add(u1);
 
        User u2 = new User();
       	u2.setUserName("李四");
      	u2.setPassWord("lisi123");
        userList.add(u2);
 
        User u3 = new User();
       	u3.setUserName("王五");
      	u3.setPassWord("wangwu123");
        userList.add(u3);
        //遍历添加序号
      	list.forEach(v -> v.setIndex(list.indexOf(v)+1));
    }
}
 
@Data
public class User {
  
  private Integer index;
  
  private String userName;
  
  private String passWord;
}