javaweb 大题2

Posted 2022-01-06 寂静花开

• 题干
• 做题步骤：

题干

已知接口ink和paper,ink中有抽象函数print,paper中有抽象函数putChar()，已经编写好这两个接口的实现类，黑白墨盒类和 A4纸类，在墨盒类中重写抽象函数即可，纸类中需要定义rows和cols成员变量，代码如下
Ink接口

package com.hkd.printer;
public interface Ink  
   public String getColor();

Paper接口

package com.hkd.printer;
public interface Paper  
	public void putChar(); 

墨盒实现类

package com.hkd.printer;
public class GreyInkImp implements Ink 
	public String getColor()  
	return "黑白打印机墨盒";
	

A4纸类

package com.hkd.printer;
public class A4Paper implements Paper 
	private int rows;
	private int cols;
	private String str;
	public int getRows() 
	return rows;
	
	public void setRows(int rows) 
	this.rows = rows;
	
	public int getCols() 
	return cols;
	
	public void setCols(int cols) 
	this.cols = cols;
	
	public String getStr() 
	return str;
	
	public void setStr(String str) 
	this.str = str;
	
	public void putChar() 
	// TODO Auto-generated method stub
	System.out.println(this.rows+";"+this.cols);
	System.out.println(str);
	

要求编写完成如下代码：
1.编写打印机类，使用墨盒类和纸类来进行组装，并且编写打印机类的打印函数。
2.使用IOC方式，在工厂文件中进行组件的生产(头文件如下所示)。
3.使用单元测试进行测试。

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">

做题步骤：

将上述代码，放到相应包下。
1.打印机类

package com.hkd.printer;

public class Dayinji 
//记
private A4Paper a4Paper;
private GreyInkImp greyInkImp;

//自动生成
public A4Paper getA4Paper() 
return a4Paper;


public void setA4Paper(A4Paper a4Paper) 
this.a4Paper = a4Paper;


public GreyInkImp getGreyInkImp() 
return greyInkImp;


public void setGreyInkImp(GreyInkImp greyInkImp) 
this.greyInkImp = greyInkImp;


//开始打印的函数
public void start()
System.out.println("正在打印");
System.out.println("墨盒："+greyInkImp.getColor());
System.out.println("纸张："+a4Paper.getRows()+"行，"+a4Paper.getCols()+"列，"+a4Paper.getStr());
System.out.println("打印完成");

2.在工厂文件中进行组件的生产

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd">
    <!-- 配置 -->
    <bean id="a4Paper" class="com.hkd.printer.A4Paper">
     <property name="rows" value="5"></property>
     <property name="cols" value="7"></property>
     <property name="str" value="正在打印A4紙"></property>
    </bean>
    <bean id="greyInkImp" class="com.hkd.printer.GreyInkImp"></bean>
    <bean id="dayinji" class="com.hkd.printer.Dayinji">
     <property name="a4Paper" ref="a4Paper"></property>
     <property name="greyInkImp" ref="greyInkImp"></property>
    </bean>
        </beans>

3.测试

package com.hkd.printer;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class test 
public static void main(String[] args) 
  ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");
  Dayinji bean = applicationContext.getBean("dayinji",Dayinji.class);
bean.start();