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How to solve the runtime exception while converting csv to bean using opencsv for blank csv file

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问题 Requirement: I have two csv file input.csv and output.csv The goal is to read the data rows from input.csv, then do some processing on it and if the processing fails then write the failed row of csv to output.csv Initially input.csv have some data and output.csv is blank. Here is the main class file: import com.opencsv.bean.ColumnPositionMappingStrategy; import com.opencsv.bean.CsvToBean; import com.opencsv.bean.CsvToBeanBuilder; import com.opencsv.bean.StatefulBeanToCsv; import com.opencsv

How to solve the runtime exception while converting csv to bean using opencsv for blank csv file

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How to solve the runtime exception while converting csv to bean using opencsv for blank csv file

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Update a row with new values using openCSV

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问题 I need to update a row with new values using openCSV utility. Say for example, I have below CSV file, I need to update the rows containing TestdminUsername1 and TestdminUsername2 to TestdminUsername1,Fail,Errors Found and TestdminUsername2,Fail,Errors Found respectively. TestdminUsername1,Pass,No Error TestAdminUsername2,Pass,No Error TestAdminUsername3,Pass,No Error TestAdminUsername4,Pass,No Error TestAdminUsername5,Pass,No Error TestAdminUsername6,Pass,No Error TestAdminUsername7,Pass,No

C# CSV文件读写

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public class CSVFileHelper { /// <summary> /// 将DataTable中数据写入到CSV文件中 /// </summary> /// <param name="dt">提供保存数据的DataTable</param> /// <param name="fileName">CSV的文件路径</param> public static void SaveCSV(DataTable dt, string fullPath) { FileInfo fi = new FileInfo(fullPath); if (!fi.Directory.Exists) { fi.Directory.Create(); } FileStream fs = new FileStream(fullPath, System.IO.FileMode.Create, System.IO.FileAccess.Write); //StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default); StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.UTF8); string data = ""; //写出列名称 for (int i =

Creating headers for CSV file

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来源： https://stackoverflow.com/questions/41930398/creating-headers-for-csv-file

Converting string into pojo class using opencv throwing exception

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来源： https://stackoverflow.com/questions/62865437/converting-string-into-pojo-class-using-opencv-throwing-exception

关于使用OPENCSV读取CSV文件的读取时保留双引号问题

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参考文档： https://blog.csdn.net/xyr05288/article/details/53696464 文件中的一行:"AAA","BBB",...,"DDD" 如果想在使用OPENCSV读取CSV文件的时候想保留文件中的双引号{"AAA"}，即读到后台:"AAA","BBB",...,"DDD" 而不是:AAA,BBB,...,DDD(OPENCSV框架会把双引号去除) 可以为所有字段添加双引号:"""AAA""","""BBB""",...,"""DDD""" 但是如果不想让CSV文件的所有的字段都设为{"""AAA"""}的形式，那么可以考虑不使用框架读取而是使用基础IO，即，把CSV文件当做TXT来读取。作为TXT读取的情况: 原始文本:"AAA","BBB",...,"DDD" 后台读取出来的文本:"AAA","BBB",...,"DDD" 来源： oschina 链接： https://my.oschina.net/u/3968510/blog/4364607

openCSV with complex bean structure

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问题 I try to map a nested bean structure with openCSV. I found the @CsvRecurse annotation, but this does not seem to work if a nested bean is used multiple times. What options do I have to solve this? Example (adapted from the docs linked above) Data structure to map : title,author1 given name,author1 surname,author2 given name,author2 surname Space Opera 2.0,Andrew,Jones,Hanna,Smith I would like to get the following beans public class Book { @CsvBindByName private String title; // TODO: How to

openCSV with complex bean structure

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