设计模式实验四

1、 dataConversion.convertData();dataStatistics.statisticalData();dataAnalysis.analysisData();publicvoiddisplayReport()dataDisplay.displayData();FileReader.javapublicclassFileReaderpublicvoidreadFile(Stringstr)System.out.println(”从+str+读取数据”);DataConversion.javapublicclassDataConversionpublicvoidconver

2、tData()System.out.println(”进行数据转换”)；DataStatistics.javapublicclassDataStatisticspublicvoidstatisticalData()System.out.println(”进行数据统计”)；DataAnalysis.javapublicclassDataAnalysispublicvoidanalysisData()System.out.println(”进行数据分析”)；DataDisplay.javapublicclassDataDisplaypublicvoiddisplayData()System.out

3、.println(”用报表显示数据”)；XMLUtil.javaimportjavax.xml.parsers.*;importorg.w3c.dom.*;importorg.xml.sax.SAXException;importjava.io.*;publicclassXMLUtil该方法用于从XML配置文件中提取具体类类名，并返回一个实例对象publicstaticObjectgetBean()try创建DOM文档对象DocumentBuilderFactorydFactory=DocumentBuilderFactory.newInstance();DocumentBuilderbuil

4、der=dFactory.newDocumentBuilder();Documentdoc;doc=builder.parse(newFile(src/config.xml);获取包含类名的文本节点NodeListnl=doc.getElementsByTagName(className);NodeclassNode=nl.item(O).getFirstChild();StringcName=classNode.getNodeValue();通过类名生成实例对象并将其返回Classc=Class.forName(cName);Objectobj=c.newInstance();returnobj;catch(Exceptione)e.printStackTrace();returnnull;publicclassClientpublicstaticvoidmain(Stringargs)AbstractFacadeaf;af=(Ab