【畢設進行時-工業大數據，數據挖掘】Java讀取文本數據轉化爲二維數組

時間 2019-12-18

標籤畢設進行工業數據數據挖掘 java 讀取文本轉化二維數組欄目 Java 简体版

原文原文鏈接

正文以前

一天打魚九天曬網的畢業設計。感受快要迎來中期檢查了。因此有點慌這兩天，哆哆嗦嗦的把一部分代碼寫完了（大部分都是抄，小部分本身改）。因此爲了個人簡書存活，到底要把今天寫的一個東西放了上來。java

正文

其實沒什麼好說的，就是一個文本讀取類。固然，爲了體現效果，我還這幾在裏面留了一個測試的數據。若是自己有數據的話把測試的數據刪掉就能夠了。這個基本上是通用吧，不少地方均可以用的哦。數組

import java.io.*;

public class ReadData {
    public Object[][] ReadData() throws IOException {
        Object[][] rawData = new Object [][]{
                { "<30 ", "High ", "No ", "Fair ", "0" },
                { "<30 ", "High ", "No ", "Excellent", "0" },
                { "30-40", "High ", "No ", "Fair ", "1" },
                { ">40 ", "Medium", "No ", "Fair ", "1" },
                { ">40 ", "Low ", "Yes", "Fair ", "1" },
                { ">40 ", "Low ", "Yes", "Excellent", "0" },
                { "30-40", "Low ", "Yes", "Excellent", "1" },
                { "<30 ", "Medium", "No ", "Fair ", "0" },
                { "<30 ", "Low ", "Yes", "Fair ", "1" },
                { ">40 ", "Medium", "Yes", "Fair ", "1" },
                { "<30 ", "Medium", "Yes", "Excellent", "1" },
                { "30-40", "Medium", "No ", "Excellent", "1" },
                { "30-40", "High ", "Yes", "Fair ", "1" },
                { ">40 ", "Medium", "No ", "Excellent", "0" }
        };

        File file = new File("/Users/zhangzhaobo/IdeaProjects/Graduation_Design/src/data.txt");  //存放數組數據的文件

        FileWriter DataToTXT = new FileWriter(file);  //文件寫入流
        int row=0;
        //將數組中的數據寫入到文件中。每行各數據之間TAB間隔
        for(int i=0;i<rawData.length;i++){
            for(int j=0;j<rawData[0].length;j++){
                DataToTXT.write(rawData[i][j]+"\t");
            }
            row++;
            DataToTXT.write("\r\n");
        }
        DataToTXT.close();

        BufferedReader in = new BufferedReader(new FileReader(file));
        String line;  //一行數據
        //逐行讀取，並將每一個數組放入到數組中
        Object[][] DataToOut = new Object[row][5];
        int readrow=0;
        while((line = in.readLine()) != null){
            String[] temp = line.split("\t");
            for(int j=0;j<temp.length;j++){
                DataToOut[readrow][j] = temp[j];
            }
            readrow++;
        }
        in.close();

        //顯示讀取出的數組
        for(int i=0;i<DataToOut.length;i++){
            for(int j=0;j<DataToOut[0].length;j++){
                System.out.print(DataToOut[i][j]+"\t");
            }
            System.out.println();
        }
        return DataToOut;
    }
}
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