設(shè)計模式試驗--適配器模式、裝飾模式

1、浙江工商大學計算機與信息工程學院 學期 上機實驗報告課程名稱： 設(shè)計模式 姓 名： 學 號： 指導教師： 班 級： 日 期： 【一】實驗?zāi)康模海?） 掌握結(jié)構(gòu)型設(shè)計模式的意圖、使用方法和優(yōu)缺點，包括適配器模式、裝飾模式、外觀模式?！径繉嶒瀮?nèi)容：(1) 假設(shè)某系統(tǒng)中使用了一個第三方的日志記錄工具，該日志記錄工具支持數(shù)據(jù)庫日志記錄DatabaseLog和文本文件記錄FileLog兩種方式，如圖1所示，它提供給的API接口是Write()方法，使用方法如下：Log.Write("Logging Message!");圖1 由于某種原因不能繼續(xù)使用該日志記錄工具了，需要采用另外一

2、個日志記錄工具，它同樣也支持數(shù)據(jù)庫日志記錄DatabaseLog和文本文件記錄FileLog兩種方式，如圖2所示，只不過它提供的API接口是WriteLog()方法，使用方法如下：Log.WriteLog("Logging Message!");圖2現(xiàn)要求設(shè)計一個解決方案，使得在不修改原有程序的基礎(chǔ)上，能實現(xiàn)日志工具的替換。（2）Java I/O包的類關(guān)系圖如圖3所示，其中FilterInputSteam為裝飾類。要求編寫一個裝飾者，把輸入流內(nèi)的所有小寫字符轉(zhuǎn)換為大寫字符。圖3 【三】完成報告（預備知識、步驟、程序框圖、程序、思考等）：第一題UML類圖：Java代碼：Cli

3、entDemo.java/* * author * * */public class ClientDemo public static void main (String args)ILog newLog = new Adapter();newLog.write();ILog.java/* * author * * */public interface ILog public void write();DatabaseLog.java/* * author * * */public class DatabaseLog implements ILog public void write()Sys

4、tem.out.println("數(shù)據(jù)庫日志記錄");FileLog.java/* * author * * */public class FileLog implements ILog public void write()System.out.println("文本文件記錄");Adapter.java/* * author * * */public class Adapter extends LogAdaptee implements ILog public void write()super.writeLog();System.out.print

5、ln("適配器轉(zhuǎn)換。");LogAdaptee.java/* * author * * */public interface LogAdaptee public void writeLog();DatabaseLogAdaptee.java/* * author * * */public class DatabaseLogAdaptee implements LogAdapteepublic void writeLog()System.out.println("轉(zhuǎn)換后的數(shù)據(jù)庫日志記錄");FileLogAdaptee.java/* * author *

6、* */public class DatabaseLogAdaptee implements LogAdapteepublic void writeLog()System.out.println("轉(zhuǎn)換后的數(shù)據(jù)庫日志記錄");第二題UML類圖：Java代碼：ClientDemo.java/* * author * * */public class ClientDemo public static void main (String args) InputStream newInput = new StringBufferInputStream(); BufferInputS

7、tream newBuffer = new BufferInputStream(newInput); ToUpperCaseInputStream newToUpperCase = new ToUpperCaseInputStream(newBuffer); newToUpperCase.read();InputStream.java/* * author * * */public interface InputStream public void read();FileInputStream.java/* * author * * */public class FileInputStream

8、 implements InputStream public void read() System.out.println("FileInputStream!"); ByteArrayInputStream.java/* * author * * */public class ByteArrayInputStream implements InputStream public void read() System.out.println("ByteArrayInputStream!"); StringBufferInputStream.java/* *

9、author * * */public class StringBufferInputStream implements InputStream public void read() System.out.println("StringBufferInputStream!"); FilterInputStream.java/* * author * * */public class FilterInputStream implements InputStream public void read() System.out.println("FilterInputS

10、tream!"); DataInputStream.java/* * author * * */public class DataInputStream extends FilterInputStream public DataInputStream(InputStream inputStream) super(inputStream); public void read() super.read(); System.out.println("DataInputStream!"); BufferInputStream.java/* * author * * */p

11、ublic class BufferInputStream extends FilterInputStream public BufferInputStream (InputStream inputStream) super(inputStream); public void read() super.read(); System.out.println("BufferInputStream!"); LineNumberInputStream.java/* * author * * */public class LineNumberInputStream extends FilterInputStream public LineNumberInputStream (InputStream inputStream) super(inputStream); public void read() super.read(); System.out.println("LineNumberInputStream!"); ToUpperCaseInputStream.java/* * author * * */public class ToUpperCaseInputStream extends Fi