supercsv

Abilities of SuperCSV

由 佐手、 提交于 2019-12-13 14:40:44
问题 I'm looking at using SuperCSV to check the contents of some files that I receive. The format of the file is such that it has a header record followed by the data records followed by a CRC32 checksum value. e.g. ABC|2|20130115150327| 1|1234567890123456|1234|20130109204710|21130109204710| 2|6543210987654321|1234|20130110043658|21130110043658| 1A345C7D I have a few questions about the capabilities of SuperCSV in this situation. Does it allow you to validate different lines against different

org.supercsv.exception.SuperCsvException: unexpected end of file while reading quoted column beginning on line

由 喜夏-厌秋 提交于 2019-12-13 10:31:55
问题 I'm reading csv files using superCSV reader and got the following exception. the file has 80000 lines. As I remove the end lines the exception still happens so there's some line in file that's causing this problem. how do I fix this? org.supercsv.exception.SuperCsvException: unexpected end of file while reading quoted column beginning on line 80000 and ending on line 80000 context=null at org.supercsv.io.Tokenizer.readColumns(Tokenizer.java:198) at org.supercsv.io.AbstractCsvReader.readRow

How to always apply quotes (escape) in Super CSV

由 喜欢而已 提交于 2019-12-12 02:38:23
问题 i would like to put my file csv like this forma: "User 2";"Web Page" ;"AbdelMonem NAAMANE";;;; i make my own Csv Preference like that: private static final CsvPreference myPreference = new CsvPreference.Builder('"',';''\n').build(); i would like to have a header like that "User 2";"Web Page" 回答1: It's hard to see what you're doing without a complete code example, but from your post on the Super CSV bug tracker, I suspect that you're asking how to always quote CSV fields. There's extensive

Limit CsvListReader to one line

由 邮差的信 提交于 2019-12-11 19:04:27
问题 I am working on application which processes large CSV files (several hundreds of MB's). Recently I faced a problem which at first looked as a memory leak in application, but after some investigation, it appears that it is combination of bad formatted CSV and attempt of CsvListReader to parse never-ending line. As a result, I got following exception: at java.lang.OutOfMemoryError.<init>(<unknown string>) at java.util.Arrays.copyOf(<unknown string>) Local Variable: char[]#13624 at java.lang

How to display localized error messages in Super CSV

由 让人想犯罪 __ 提交于 2019-12-11 04:23:13
问题 My mother tongue is Spanish and I would like to know how to localize the error messages displayed by Super CSV's cell processors without compiling the source again. 回答1: I know the idea for localizing error messages in Super CSV has been floating around for years now - it's just never had enough demand to warrant it (and not many other libraries support it either). I've used String.format for all exception messages throughout the code, so if we ever do add it it'll be relatively easy. Your

Parse CSV to multiple/nested bean types with OpenCSV?

由 旧城冷巷雨未停 提交于 2019-12-08 20:01:39
问题 I have various CSVs that contain some standard columns and some completely random fields: firstname, lastname, dog_name, fav_hat, fav_color bill,smith,fido,porkpie,blue james,smith,rover,bowler,purple firstname, lastname, car_type, floor_number tom, collins, ford, 14 jim, jones, toyota, 120 So I'm trying to parse those into Person.class beans, which holds firstname & lastname, then I have a second class called PersonAttribute.class to hold...whatever else. The bastic outline of the two

SuperCSV, Dozer: Writing to a csv file. For Object with a list into multiple rows

由 守給你的承諾、 提交于 2019-12-08 11:22:12
问题 I have a class A which has few properties: class A { private String col1; private String col2; private List<B> bList; // setters and getters } Class B { private String b1; private String b2; //setters and getters } I am trying to write this into a csv file using supercsv and dozer. The csv should have the same number of rows as elements in the list bList from class A. And should have four columns col1, col2 (which would be common for all the rows) and b1, b2 from the list of class B in class

How to write List<String> to csv file & read it back using supercsv

由 这一生的挚爱 提交于 2019-12-08 03:12:07
问题 Am using supercsv CsvBeanWriter to write values to csv file. sample class: public class Employee { private String name; private int empId; List<String> phoneNumbers; } Output I get is : name,empId,phoneNumbers vijay,1,"[123, 456]" Note how the List<String> phoneNumbers is written out in [] My Question is how do I read it back to Employee class(bean)using supercsv. I tried using CsvBeanReader & CsvDozerBeanReader but not able to read the List<String> . Am getting illegalargument exception.

Using SuperCsv with multiple variable columns

由 无人久伴 提交于 2019-12-06 03:06:37
I was looking at this example from the Super CSV website which shows that dateofbirth is optional column. What happens if i have more than one optional columns? How will the code change than? private static void readVariableColumnsWithCsvListReader() throws Exception { final CellProcessor[] allProcessors = new CellProcessor[] { new UniqueHashCode(), // customerNo (must be unique) new NotNull(), // firstName new NotNull(), // lastName new ParseDate("dd/MM/yyyy") }; // birthDate final CellProcessor[] noBirthDateProcessors = new CellProcessor[] { allProcessors[0], // customerNo allProcessors[1],

Using SuperCSV to Change Header Values

由 拟墨画扇 提交于 2019-12-04 12:12:58
In line with this post about abilities of SuperCSV , can SuperCSV handle changing the values of the headers( column names only ) read from the database? For example, the following code snippet details the Current State and the Expected State. Current State INPUT : final String[] header = new String[] { "firstName", "lastName", "birthDate"}; // write the header beanWriter.writeHeader(header); // write the beans for( final CustomerBean customer : customers ) { beanWriter.write(customer, header, processors); } OUTPUT : file with column names: firstName, lastName, birthDate Bob , Doe , 02/12/2013
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