导入100W的Csv数据，使用OpenCsv解析工具解析Csv，发现报错
报错内容
com.opencsv.exceptions.CsvMalformedLineException: Unterminated quoted field at end of CSV line. Beginning of lost text: [XXXXX...]
at com.opencsv.CSVReader.readNext(CSVReader.java:355) ~[opencsv-4.6.jar!/:na]
解析代码
CSVParser csvParser = new CSVParserBuilder().build();
try (CSVReader readerCsv = new CSVReaderBuilder(new InputStreamReader(csv)).withCSVParser(csvParser).build()) {
String[] lines;
while ((lines = readerCsv.readNext()) != null) {
doRead(lines);
}
} catch (CsvValidationException e) {
throw new IOException(e);
}
报错位置发生在英文逗号处，一开始怀疑是英文逗号解析问题
Csv 文本报错位置
"2018-04-28 00:40:43","xxx,XXXXX"
去掉当前位置英文逗号导入仍旧失败
后来查看源码发现默认的 CSVParser 会对反斜杠""进行处理
这导致了解析Csv逻辑与源文件不同
后来使用了 RFC4180Parser 问题解决
RFC4180Parser rfc4180Parser = new RFC4180ParserBuilder().build();
try (CSVReader readerCsv = new CSVReaderBuilder(new InputStreamReader(csv)).withCSVParser(rfc4180Parser).build()) {
String[] lines;
while ((lines = readerCsv.readNext()) != null) {
doRead(lines);
}
} catch (CsvValidationException e) {
throw new IOException(e);
}
参考文档：（RFC4180标准文档）https://datatracker.ietf.org/doc/html/rfc4180
