我正在尝试读取 csv 文件，解析它并使用解析的数据写入一个新的 csv。
我的输入 .csv 文件如下所示:
[Altice<SPLIT> France<SPLIT>
nNUMFP<SPLIT> 4.875<SPLIT> 19<SPLIT> 99.875<SPLIT>-<SPLIT>100.375<SPLIT> 4.909<SPLIT>/<SPLIT>4.752<SPLIT> 371.<SPLIT>/<SPLIT>371.<SPLIT> 2.4MMM<SPLIT> B+<SPLIT> Ba3<SPLIT>
nNUMFP<SPLIT> 6<SPLIT> 22<SPLIT> 102.000<SPLIT>-<SPLIT>102.500<SPLIT> 5.559<SPLIT>/<SPLIT>5.450<SPLIT> 422.<SPLIT>/<SPLIT>411.<SPLIT> 4MMM<SPLIT> B+<SPLIT> Ba3<SPLIT>
nNUMFP<SPLIT> 6.25<SPLIT> 24<SPLIT> 103.000<SPLIT>-<SPLIT>103.750<SPLIT> 5.741<SPLIT>/<SPLIT>5.616<SPLIT> 420.<SPLIT>/<SPLIT>407.<SPLIT> 1.375M<SPLIT> B+<SPLIT> Ba3<SPLIT>
nAltice<SPLIT> S.A.<SPLIT>
nATCNA<SPLIT> 7.75<SPLIT> 22<SPLIT> 103.250<SPLIT>-<SPLIT>104.000<SPLIT> 7.005<SPLIT>/<SPLIT>6.837<SPLIT> 568.<SPLIT>/551.<SPLIT> 2.9MMM<SPLIT> B<SPLIT> B3<SPLIT>
nATCNA<SPLIT> 7.625<SPLIT> 25<SPLIT> 101.875<SPLIT>-<SPLIT>102.375<SPLIT> 7.309<SPLIT>/<SPLIT>7.227<SPLIT> 573.<SPLIT>/<SPLIT>565.<SPLIT> 1.48MM<SPLIT> N.A.<SPLIT> B3e<SPLIT>
n
我的代码是:
public class TokenizerParser {
public static void main(String[] args) throws Exception {
//Build reader instance
CSVReader reader = new CSVReader(new FileReader("rawtest.csv"), ',', '"', 1);
CSVWriter writer = new CSVWriter(new FileWriter(csv));
//Read all rows at once
List<String[]> allRows = reader.readAll();
//Read CSV line by line and use the string array as you want
for(String[] row : allRows){
String changedString = Arrays.toString(row).replace("[", ""); // This is an example for parsing
System.out.println(changedString);
}
// Here I do not know what to do to write the parsed data back to a .csv
for(String[] output : allRows) {
}
}
}
所以我可以读取并执行解析操作，但是如何将从控制台中的 System.out.println(changedString) 看到的已解析字符串写入新的 .csv 文件？
非常感谢您的帮助!
最佳答案
试试这个:
for(String[] output : allRows) {
//get current row
String[] parsedRow=new String[output.length];
for(int i=0;i<output.length;i++){
//parse each column
parsedRow[i]=output[i].replace("[", "");
}
//write line
writer.writeNext(parsedRow);
}
writer.close();
关于java - 用 Java 读取、解析然后写入 CSV，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/28602769/