如何使用 CSVWriter 仅在 csv 中的嵌入式逗号字符串上使用双引号？

Question

这是我在输出 csv 中预期的结果格式：

header1,header2,header3,header4
monica,chandler,"rachel,ross",joey

我目前的成绩：

策略 1：

CSVWriter csvWriter = new CSVWriter(new FileWriter("D:/new.csv"));
String[] headers = new String[] { "header1", "header2", "header3", "header4"};    
String[] arr = new String[] { "monica", "chandler", "rachel,ross", "joey"};


result:
"header1","header2","header2","header4"
"monica","chandler","rachel,ross","joey"

策略2：

CSVWriter csvWriter = new CSVWriter(new FileWriter("D:/new.csv"), CSVWriter.DEFAULT_SEPARATOR,CSVWriter.NO_QUOTE_CHARACTER, CSVWriter.DEFAULT_ESCAPE_CHARACTER, CSVWriter.DEFAULT_LINE_END);
    String[] headers = new String[] { "header1", "header2", "header3", "header4"};    
    String[] arr = new String[] { "monica", "chandler", "rachel,ross", "joey"};


result:
header1,header2,header2,header4
monica,chandler,rachel",ross,joey

任何人都可以向我建议如何使用 OpenCSV 框架的 CSVWriter 实现此目的吗？

Answer 1

您可以使用 CsvWriter::writeNext 方法，该方法还需要一个 boolean 来指示是始终使用引号还是仅在需要时使用引号。

来自documentation：

applyQuotesToAll - True if all values are to be quoted. False applies quotes only to values which contain the separator, escape, quote, or new line characters.

一个例子：

try (CSVWriter csvWriter = new CSVWriter(new FileWriter("new.csv"))) {
    String[] headers = new String[]{"header1", "header2", "header3", "header4"};
    String[] arr = new String[]{"monica", "chandler", "rachel,ross", "joey"};
    csvWriter.writeNext(headers, false);
    csvWriter.writeNext(arr, false);
}

结果：

header1,header2,header3,header4
monica,chandler,"rachel,ross",joey

如何使用 CSVWriter 仅在 csv 中的嵌入式逗号字符串上使用双引号？

How to have double quotes only on embedded comma String in csv using CSVWriter?

java

csv

spring

apache-camel

opencsv