我无法调试这个小应用程序。代码应该是
- 读取 .csv
- 从第三类（标签）中选择数据
- 创建文件以收集照片及其标签之间的节点和链接
- 将这些标签写入准备在 Gephi 中使用的文件
我在第 91 行不断收到错误消息，目前，notes.txt 仅显示：
Id，标签，编号标签，标签，
不是实际的标签。我认为循环中有问题，但我不知道如何纠正这个问题。我还考虑使用此链接中演示的方法重写 BufferedWriter + Writer 代码：
http://tutorials.jenkov.com/java-io/bufferedwriter.html
但我不确定这是否是这里的问题。如果您对如何（在哪里）寻找解决方案有任何指示，请告诉我。
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*/
package Lecture4;
import Lecture3.*;
import com.csvreader.CsvReader;
import com.google.common.collect.HashMultiset;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Arrays;
/**
*
* @author doyinue
*/
public class ReadingACSVFile1 {
private static String tagsOfTheCurrentPicture;
private static String oneLine;
private static String[] myTagsAsAnArray;
private static char[] firstTag;
/**
* @param args the command line argumentsileReader myFileReader = new
* FileReader(myfile);
*
*
*
*
*
* }
* }
*
*/
@SuppressWarnings("empty-statement")
public static void main(String[] args) throws FileNotFoundException, IOException {
// TODO code application logic here
String myfile;
myfile = "D:\\Learning\\EUR - Handling Digital Data\\Resources\\rotterdam_erasmus.csv";
FileReader myFileReader = new FileReader(myfile);
BufferedReader myBufferedReader = new BufferedReader(myFileReader);
//this if for converting the comma into a character this can understand
String comma = ",";
char fieldCharacter = comma.charAt(0);
//csvReader
CsvReader myReader;
myReader = new CsvReader(myBufferedReader, fieldCharacter);
//this if for converting the text into a character this can understand
String text = "\"";
char textCharacter = text.charAt(0);
myReader.setTextQualifier(textCharacter);
myReader.setUseTextQualifier(true);
FileWriter nodesWriter = new FileWriter("D:\\Learning\\EUR - Handling Digital Data\\Output\\Lecture4\\nodes.txt");
BufferedWriter nodesBWriter = new BufferedWriter(nodesWriter);
// FileWriter connWriter = new FileWriter("D:\\Learning\\EUR - Handling Digital Data\\Output\\Lecture4\\conns.txt");
// BufferedWriter connBWriter = new BufferedWriter(connWriter);
//Multiset Tags
HashMultiset<String> myTags = HashMultiset.create();
//Multiset Links
HashMultiset<String> myConnections = HashMultiset.create();
//start the loop
while (myReader.readRecord()) {
String[] values = myReader.getValues();
String tagsOfImage = values[2];
String[] myTagsArrayed;
myTagsArrayed = tagsOfImage.split(",");
myTags.addAll(Arrays.asList(myTagsArrayed));
nodesBWriter.write("Id,Label,Number");
nodesBWriter.newLine();
for (String tags: myTags.elementSet()){
nodesBWriter.write(tags);
nodesBWriter.write(",");
nodesBWriter.write(tags);
nodesBWriter.write(",");
nodesBWriter.write(myTags.count(tags));
nodesBWriter.newLine();
}
nodesBWriter.close();
Utils usefulTools = new Utils();
myConnections.addAll(usefulTools.getListOfLinks(myTagsArrayed));
}
myBufferedReader.close();
}
}