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:設計模式姓名:學號:指導教師:班級:日期:【一】實驗目的:(1掌握結構型設計模式的意圖、使用方法和優缺點,包括適配器模式、裝飾模式、外觀模式。【二】實驗內容:(1 假設某系統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據庫日志記錄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使用該日志記錄工具了,需要采用另外一個日志記錄工具,它同樣也支持數據庫日志

2、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現要求設計一個解決方案,使得在不修改原有程序的基礎上,能實現日志工具的替換。(2Java I/O包的類關系圖如圖3所示,其中FilterInputSteam為裝飾類。要求編寫一個裝飾者,把輸入流內的所有小寫字符轉換為大寫字符。 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:ClientDemo.java/* author

3、*/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(FileLog.java/* author */public class FileLog im

4、plements ILog public void write(Adapter.java/* author */public class Adapter extends LogAdaptee implements ILog public void write(super.writeLog(;LogAdaptee.java/* author */public interface LogAdaptee public void writeLog(;DatabaseLogAdaptee.java/* author */public class DatabaseLogAdaptee implements

5、 LogAdaptee public void writeLog(FileLogAdaptee.java/* author */public class DatabaseLogAdaptee implements LogAdaptee public void writeLog(第二題UML類圖: Java代碼: ClientDemo.java /* author * */public class ClientDemopublic static void main (String argsInputStream newInput = new StringBufferInputStream(; B

6、ufferInputStream newBuffer = newBufferInputStream(newInput;ToUpperCaseInputStream newToUpperCase = new ToUpperCaseInputStream(newBuffer;newToUpperCase.read(;InputStream.java/* author */public interface InputStream public void read(;FileInputStream.java/* author *public class FileInputStream implements InputStream public void read( ByteArrayInputStream.java/* author */public class ByteArrayInputStream implements InputStream public void read( StringBufferInputStream.java/* author */public class StringBufferInputStream implements InputStream public void read( FilterInputStream.java/*