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1、package fileAndStringOperate;import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.OutputStream;public class ReadFileToString public static void main(String args) throws IOExcept
2、ionString fileData = readtxt(D:IR1JAVA网络爬虫.txt);CountRelatedDocument(fileData);/MyWebRec myWebRec = new MyWebRec2000;ClassifyURL(fileData);private static String readtxt(String filePath) throws IOExceptionBufferedReader br=new BufferedReader(new FileReader(filePath);String str=;String r=br.readLine()
3、;while(r!=null)str+=r+n;r=br.readLine();return str;private static char readtxtToChar(String filePath) throws IOExceptionchar data = null;int currentline = 0;BufferedReader br=new BufferedReader(new FileReader(filePath);String str=;String r=br.readLine();while(r!=null)str+=r+n;datacurrentline+ = str.
4、toCharArray();r=br.readLine();return data;private static int CountRelatedDocument(String fileData)int cntRelated = 0;int currentLine = 1;int baiduCnt = 0;int bingCnt = 0;int sogouCnt = 0;int _360Cnt = 0;int State = 0;boolean baiduY = new boolean51;boolean bingY = new boolean51;boolean sogouY = new b
5、oolean51;boolean _360Y = new boolean51;char fileChar = fileData.toCharArray();for(int i = 0; i fileChar.length;i +)if(fileChari = # & fileChari+1 = *)State+;System.out.println(分点：+currentLine);if(fileChari = n)currentLine +;if(currentLine %3 = 0)if(fileChari = Y|fileChari = y)if(State = 1)baiduCnt +
6、;baiduYcurrentLine/3 = true;else if(State = 2)bingCnt +;bingYcurrentLine/3 - 50 = true;/System.out.println(currentLine/3 - 50);else if(State = 3)sogouCnt +;sogouYcurrentLine/3 - 100 =true;else if(State = 4)_360Cnt +;_360YcurrentLine/3 - 150 = true;cntRelated+;tryCaculatePR(baiduY,bingY,_360Y,sogouY,
7、cntRelated);catch(Exception e)e.getMessage();System.out.println(cntRelated = +cntRelated);System.out.println(baiduCnt = +baiduCnt);System.out.println(bingCnt = +bingCnt);System.out.println(sohuCnt = +sogouCnt);System.out.println(_360Cnt = +_360Cnt);System.out.println(currentLine = + currentLine);ret
8、urn cntRelated;private static void ClassifyURL(String fileData)String str1 = fileData.split(n);for(int i = 0;i str1.length;i +)if(str1i.startsWith(#*)str1i = str1i.substring(10);private static void CaculatePR(boolean baiduY,boolean bingY,boolean _360Y,boolean sogouY,int cntRelated) throws IOExceptio
9、ndouble baiduP = new double 51;double baiduR = new double 51;double bingP = new double 51;double bingR = new double 51;double sogouP = new double 51;double sogouR = new double 51;double _360P = new double 51;double _360R = new double 51;int cntBaidu = 0;int cntBing = 0;int cntSogou = 0;int cnt360 =
10、0;/System.out.println(Related:+cntRelated);for(int i = 1;i = 50;i +)if(baiduYi = true)cntBaidu +;if(bingYi = true)cntBing +;if(sogouYi = true)cntSogou +;if(_360Yi = true)cnt360 +;baiduPi = 1.000000*cntBaidu/i;baiduRi = 1.000000*cntBaidu/cntRelated;bingPi = 1.000000*cntBing/i;bingRi = 1.000000*cntBin
11、g/cntRelated;sogouPi = 1.000000*cntSogou/i;sogouRi = 1.000000*cntSogou/cntRelated;_360Pi = 1.000000*cnt360/i;_360Ri = 1.000000*cnt360/cntRelated;/System.out.print(cntBaidu+t+cntBing+t+cntSogou+t+cnt360+n);CaculateMAP(baiduP,bingP,sogouP, _360P);File file = new File(D:/JAVA网络爬虫.txt);FileWriter out =
12、new FileWriter(file); /文件写入流 /将数组中的数据写入到文件中。每行各数据之间TAB间隔 for(int i=1;i=50;i+) out.write(baidu+t+baiduPi+t + baiduRi+rn); for(int i=1;i=50;i+) out.write(bing+t+bingPi+t + bingRi+rn); for(int i=1;i=50;i+) out.write(sogou+t+sogouPi+t + sogouRi+rn); for(int i=1;i=50;i+) out.write(360+t+_360Pi+t + _360Ri+rn); out.close();private static void CaculateMAP(double baiduP,double bingP,double sogouP,double _360P)double baiduPre=0,bingPre=0,sogouPre=0,_360Pre=0;for(int i = 1;i = 50;i + )baiduPre += baiduPi;bingPre += bingPi;sogouPre += sogouPi;_360Pre += _3
