Question

我的文字

sirket;sehir;ilce;unvan;numara
AKSA SAT VE PAAMA ANM RKET KADY BES;STANBUL;KADIKY;A.S.;1230488;
KER BV SANAY;STANBUL;ZEYTNBURNU;A:S.;308133;
C.E.S.COSKUN MH.N.ELK.DAY.TK.MAL.VE GIDA TC.LTD.T.;HATAY;SKENDERUN;LTD. T.;14947;
ANLU GAZ TCARET VE SANY ANNM RKET KIRIKKALE UBES;KIRIKKALE;KIRIKKALE;A.S.;12519;
BVR GIDA MARİ NAAT TURZM SANAY VE TCARET LTD.T.;STANBUL;LO;LTD:STİ.;239;
ASA AKRLK KMYA SANAY (YALOVA UBES);YALOVA;FTLKKY;A.S.;551484;
WNCOR NXDORF LGSAYR SSTEER A.S.-ESNLER SUES;STANBUL;ESENLER;-;1027;
DESA DER SAN. VE TC.;STANBUL;BAKIRKY;A.S.;1480;
SNTM BLŞM TEKJLER SAN. VE TC;DYARBAKIR;YENEHR;A.S.;1439;

ı想要改变“。”在仅限unvan列的字符而不是“：”，其中包含A.S. ，LTD.T.，LTD：STI。当java读取文本时删除第一行。我给出了第一行的知识。并且ı想要在更改之前写，在更改之后写 但是我的代码有问题它不能由于在sirket专栏的思考空间写文本。怎么能写出来。

ı想要这个输出

KER BV SANAY;STANBUL;ZEYTNBURNU;A:S.;3083; KER BV SANAY;STANBUL;ZEYTNBURNU;A.S.;308133; BULVAR GIDA MAMLLERİ NAAT TURZM SANAY VE TCARET LTD.T.;STANBUL;LO;LTD:STİ.;2149; BULVAR GIDA MAMLLERİ NAAT TURZM SANAY VE TCARET LTD.T.;STANBUL;LO;LTD.STİ.;239;

我的代码是

public class MaliyeBir { private static String inputPath = "C:\\deneme\\Maliye.csv"; private static String outputPath = "C:\\yazdirilan\\YazdirilanMaliye.csv"; private static BufferedReader bufferedReader; private static PrintWriter printWriter; public static void main(String[] args) { try { FileInputStream inputStream = new FileInputStream(inputPath); Reader reader = new InputStreamReader(inputStream, "ISO-8859-9"); bufferedReader = new BufferedReader(reader); FileOutputStream outputStream = new FileOutputStream(outputPath); Writer writer = new OutputStreamWriter(outputStream, "ISO-8859-9"); printWriter = new PrintWriter(writer); String line; while ((line = bufferedReader.readLine()) != null) { EndeksDegeri eD; eD = lineToClass(line); if (shouldOutput(eD)) { printWriter.append(classToLine(eD, true)); printWriter.append(classToLine(eD, false)); } } } catch (IOException e) { e.printStackTrace(); } finally { try { bufferedReader.close(); printWriter.close(); } catch (IOException e) { e.printStackTrace(); } } } private static boolean shouldOutput(EndeksDegeri eD) { if (!eD.tip.contains(":")) { return false; } return true; } private static String classToLine(EndeksDegeri eD, boolean original) { if (!original) { eD.tip = eD.tip.replace(":", "."); } return eD.sirket.concat(";") .concat(eD.sehir).concat(";") .concat(eD.ilce).concat(";") .concat(eD.tip).concat(";") .concat(String.valueOf(eD.numara) .concat("\r\n")); } private static EndeksDegeri lineToClass(String line) { String[] element = line.split(";"); EndeksDegeri endeksDegeri = new EndeksDegeri(); endeksDegeri.sirket = element[0]; endeksDegeri.sehir = element[1]; endeksDegeri.ilce = element[2]; endeksDegeri.tip = element[3]; endeksDegeri.numara = Integer.valueOf(element[4]); return endeksDegeri; }

Answer 1

如果这是一个CSV文件，我可以从代码中对csv文件扩展名的引用推断出来，那么你最好使用像opencsv这样的CSV解析库，将为您解析文件的所有艰苦工作。然后，您可以操作CSV文件对象并将结果保存到文件中。

Answer 2

如果您确定没有其他列包含分隔符;，则可以使用Java split函数将列中的文本拆分，然后使用replace函数将冒号替换为点，像这样：

while ( (line = bufferedReader.readLine()) != null){
    String[] elements = line.split(";");
    if(elements[3].contains(":")){ // If the value in column "ulvan" contains ":"
        printWriter.append(line); // Print the original
        for(int i=0; i<elements.length; i++){
            if(i>0){
                printWriter.append(";"); // Print the delimiter
            }
            if(i==3){ // For column index 3, which is "ulvan"
                printWriter.append(elements[i].replace(":",".")); // Replace ':' with '.'
            } else { // For other columns, just print
                printWriter.append(elements[i]);
            }
        }
    }
}

为简单起见，我在main函数中编写了所有内容，如果需要，可以将其模块化。

写文本只读一列

2 个答案: