[零基础学JAVA]Java SE实战开发-37.MIS信息管理系统实战开发[文件保存]（2）

package org.michael.demo.operate;    

import java.util.Iterator;    

import org.michael.demo.dao.PersonDAO;    
import org.michael.demo.factory.DAOFactory;    
import org.michael.demo.util.InputData;    
import org.michael.demo.util.TimeStamp;    
import org.michael.demo.vo.Person;    
import org.michael.demo.vo.Worker;    

public  class WorkerOperate  implements PersonOperate {    
         private PersonDAO dao =  null;    
         private InputData input =  null;    

         public WorkerOperate() {    
                 this.dao = DAOFactory.getPersonDAOInstance( "worker.ser");    
                 this.input =  new InputData();    
        }    

         public  void add() {    
                String id =  new TimeStamp( "w").getTimeStampRandom();    
                System.out.print( "输入工人姓名：");    
                String name =  this.input.getString();    
                System.out.print( "输入工人年龄：");    
                 int age =  this.input.getInt();    
                System.out.print( "输入工人工资：");    
                 float salary =  this.input.getFloat();    
                Worker w =  new Worker(id, name, age, salary);    
                 try {    
                         this.dao.doCreate(w);    
                }  catch (Exception e) {    
                        e.printStackTrace();    
                }    
        }    

         public  void delete() {    
                String id =  null;    
                System.out.print( "请输入要删除的工人ID：");    
                id = input.getString();    
                 try {    
                         this.dao.doDelete(id);    
                }  catch (Exception e) {    
                        e.printStackTrace();    
                }    
        }    

         public  void update() {    
                 // 更新之前需要先查询出来    
                String id =  null;    
                System.out.print( "请输入要修改的工人ID：");    
                id = input.getString();    
                Worker w =  null;    
                 try {    
                        w = (Worker)  this.dao.findById(id);    
                }  catch (Exception e1) {    
                         // TODO Auto-generated catch block    
                        e1.printStackTrace();    
                }    
                System.out.print( "输入工人姓名（原姓名：" + w.getName() +  "）：");    
                String name =  this.input.getString();    
                System.out.print( "输入工人年龄（原年龄：" + w.getAge() +  "）：");    
                 int age =  this.input.getInt();    
                System.out.print( "输入工人工资（原工资：" + w.getSalary() +  "）：");    
                 float salary =  this.input.getFloat();    
                w.setName(name);    
                w.setAge(age);    
                w.setSalary(salary);    
                 try {    
                         this.dao.doUpdate(w);    
                }  catch (Exception e) {    
                        e.printStackTrace();    
                }    
        }    

         public  void findAll() {    
                Iterator<Person> iter =  null;    
                 try {    
                        iter =  this.dao.findAll().iterator();    
                }  catch (Exception e) {    
                        e.printStackTrace();    
                }    
                System.out.println( "ID\t\t\t姓名\t年龄\t工资");    
                 while (iter.hasNext()) {    
                        System.out.println(iter.next());    
                }    

        }    

         public  void findByLike() {    
                String keyWord =  null ;    
                System.out.print( "请输入查询关键字：") ;    
                keyWord =  this.input.getString() ;    
                Iterator<Person> iter =  null;    
                 try {    
                        iter =  this.dao.findByLike(keyWord).iterator();    
                }  catch (Exception e) {    
                        e.printStackTrace();    
                }    
                System.out.println( "ID\t\t\t姓名\t年龄\t工资");    
                 while (iter.hasNext()) {    
                        System.out.println(iter.next());    
                }    
        }    
} 

package org.michael.demo.util;    

//输入数据的操作类    
import java.io.BufferedReader;    
import java.io.IOException;    
import java.io.InputStreamReader;    

public  class InputData {    
         private BufferedReader buf =  null;    

         public InputData() {    
                buf =  new BufferedReader( new InputStreamReader(System.in));    
        }    

         public  int getInt() {    
                 int temp = 0;    
                 // 如果输入的不是数字，至少应该有一个提示，告诉用户输入错了    
                 // 可以使用正则验证    
                String str =  null;    
                 boolean flag =  true;    
                 while (flag) {    
                         // 输入数据    
                        str =  this.getString();    
                         if (!(str.matches( "\\d+"))) {    
                                 // 如果不是一个数字，则必须重新输入    
                                System.out.print( "输入的内容，必须是整数，请重新输入：");    
                        }  else {    
                                 // 是一个正确的数字，则可以进行转换    
                                temp = Integer.parseInt(str);    
                                 // 表示退出循环    
                                flag =  false;    
                        }    
                }    
                 return temp;    
        }    

         public String getString() {    
                String str =  null;    
                 try {    
                        str = buf.readLine();    
                }  catch (IOException e) {    
                        e.printStackTrace();    
                }    
                 return str;    
        }    

         public  float getFloat() {    
                 float f = 0.0f;    
                String str =  null;    
                 boolean flag =  true;    
                 while (flag) {    
                         // 输入数据    
                        str =  this.getString();    
                         if (!(str.matches( "\\d+.?\\d{1,2}"))) {    
                                 // 如果不是一个数字，则必须重新输入    
                                System.out.print( "输入的内容，必须是小数（小数点后只到两位），请重新输入：");    
                        }  else {    
                                 // 是一个正确的数字，则可以进行转换    
                                f = Float.parseFloat(str);    
                                 // 表示退出循环    
                                flag =  false;    
                        }    
                }    
                 return f;    
        }    
} 

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