ToFinal2.java

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ToFinal2.java 格式转换Result4.txt ->final4.txt
package test;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.List;public class ToFinal2 {    public static FileWriter fw;    /**     * @param args     */    public static String[] getStrings() {        FileInputStream fis;        InputStreamReader isr;        BufferedReader br = null;        try {            fis = new FileInputStream("/public/home/dsj/Public/sundujing/fpgrowth/test_items.txt");            isr = new InputStreamReader(fis, "UTF-8");            br = new BufferedReader(isr);        } catch (FileNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (UnsupportedEncodingException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        String[] strings = new String[5462];        int i=0;        String str;        try {            while ((str = br.readLine()) != null) {                strings[i] = str;                i++;            }        } catch (IOException e) {            // TODO Auto-generated catch block            e.printStackTrace();        }        return strings;    }    public void readFileByLines(String fileName) {        File file = new File(fileName);        BufferedReader reader = null;        String[] temp;          int line=0;            try {              fw = new FileWriter("/public/home/dsj/Public/sundujing/fpgrowth/final4.txt", true);              //System.out.println("以行为单位读取文件内容，一次读一整行：");              reader = new BufferedReader(new FileReader(file));              String tempString = null;              String[] strings = getStrings();              String str="";            //  fw.append(strings[0]);            // 一次读入一行，直到读入null为文件结束            while ((tempString = reader.readLine()) != null) {                // 显示行号                   String[] s=tempString.split(",");                   String tempstr="";                   for(int j=0;j<200;j++){                       if(j==0){                         tempstr+=s[j];                       }else{                           if(s.length>j)                         tempstr+=","+s[j];                       }                   }                fw.append(strings[line].trim()+" ");                fw.append(tempstr);                str="";                fw.append("\n");                line++;                }        reader.close();        fw.flush();    } catch (IOException e) {        e.printStackTrace();    } finally {        if (reader != null) {            try {                reader.close();            } catch (IOException e1) {            }        }    }}    public static void main(String[] args) {        // TODO Auto-generated method stub         new ToFinal2().readFileByLines("/public/home/dsj/Public/sundujing/fpgrowth/final1.txt");    }}
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