Java CSVReader-使用“时出现错误”；转义字符

我正在使用OpenCSV

我有一个

CSVReader

试图解析CSV文件。
该文件有引号char

“

和分隔符char

，

和转义字符

”

请注意，CSV包含如下单元格：

"ballet 24"" classes"
"\"  

实际上代表这些值：

ballet 24" classes
\

例如：

"9/6/2014","3170168","123652278","Computer","2329043290","Bing and Yahoo! search","22951990789","voice lesson","Broad","0.00","0","1","3.00","0.00","0.00","0.00","7","0","",""
"9/6/2014","3170168","123652278","Smartphone","2329043291","Bing and Yahoo! search","22951990795","ballet class","Broad","0.00","0","1","1.00","0.00","0.00","0.00","0","0","",""
"9/6/2014","3170168","123652278","Smartphone","2329043291","Bing and Yahoo! search","22951990797","ballet 24"" classes","Broad","0.00","0","1","1.00","0.00","0.00","0.00","0","0","",""
"9/6/2014","3170168","123652278","Smartphone","2329043291","Bing and Yahoo! search","22951990797","ballet classes","Broad","0.00","0","1","1.00","0.00","0.00","0.00","0","0","",""
"9/6/2014","3170168","123652278","Computer","2329043291","Bing and Yahoo! search","22951990817","\","Broad","0.00","0","1","1.00","0.00","0.00","0.00","5","0","",""
"9/6/2014","3170168","123652278","Computer","2329043293","Bing and Yahoo! search","22951990850","zumba classes","Broad","0.00","0","1","7.00","0.00","0.00","0.00","5","0","",""
"9/6/2014","3170168","123652278","Smartphone","2329043293","Bing and Yahoo! search","22951990850","zumba classes","Broad","0.00","0","4","1.00","0.00","0.00","0.00","5","0","",""
"9/6/2014","3170168","123652278","Computer","2329043293","Bing and Yahoo! search","22951990874","zumba lessons","Broad","0.00","0","1","2.00","0.00","0.00","0.00","0","0","",""

我的问题是我无法为

CSVReader

构造函数的转义字符指定

“

” （即，使其与引号字符相同）。
如果我这样做，

CSVReader

简直疯了，它将整个CSV行作为单个CSV单元格读取

---

是否有其他人遇到过此错误以及如何避免它？！

如果您使用CsvReader的默认设置，它将起作用

检查他们的这个开放bug:：

实际上，它很好用，只是不是你想的那样。它的默认值是 逗号表示分隔符，引号表示引号字符，反斜杠表示 转义字符。但是，它理解两个连续的引号 字符作为转义引号字符。所以，如果您只使用 默认情况下，它可以正常工作

默认情况下，它可以用双引号转义双引号，但您的“true”转义字符必须仍然是其他字符

因此，以下工作：

CSVReader reader = new CSVReader(new FileReader(App.class.getClassLoader().getResource("csv.csv").getFile()), ',','"','-');

• 逗号分隔符
• 双引号作为引号字符
• 破折号（任何其他字符）作为转义字符

---

起初我将“\”作为转义字符，但随后需要修改字段“\”以转义转义字符。

CSVReader不完全符合RFC4180。请使用其较新的CSV读取器（RFC4180Parser）：

要读取格式化为CSV的字符串行，请执行以下操作：

String test = "ballet 24\"\" classes";
String[] columns = new RFC4180Parser().parseLine(test);

要使用读卡器（另一种选择是

reader.readNext（）

）：

有关更多详细信息，请参阅

---

取自

的代码不能通过CSVReader完成

from pyspark.sql.session import SparkSession

spark = SparkSession(sc)
rdd = spark.read.csv("csv.csv", multiLine=True, header="False", encoding='utf-8', escape= "\"")

---

起初，我将\定义为转义字符，但您的一个字段将此字符用作普通字符。因此，我将其更改为另一个伪字符（即：破折号），并成功使用。我自己已经想到了这种方法（我使用了一些异国情调的Unicode字符，它永远不会出现在我的CSV文件中，而不是破折号），但这是胡说八道，对吗？为什么没有选择将引号字符也作为转义字符？感谢bug链接。所以他们似乎都不明白这是一个bug。正如一个人在bug中写道的“OpenCSV可以编写无法读取的CSV文件”“这是这里的大问题。CSVWriter比CSVReader更灵活，存在相当多的不对称性。

for (String[] line : reader.readAll()) {
  for (String s : line) {
    System.out.println(s);
  }
}

from pyspark.sql.session import SparkSession

spark = SparkSession(sc)
rdd = spark.read.csv("csv.csv", multiLine=True, header="False", encoding='utf-8', escape= "\"")