opencsv

问题 I have created a MappingsBean class where all the columns of the CSV file are specified. Next I parse XML files and create a list of mappingbeans. Then I write that data into CSV file as report. I am using following annotations: public class MappingsBean { @CsvBindByName(column = "TradeID") @CsvBindByPosition(position = 0) private String tradeId; @CsvBindByName(column = "GWML GUID", required = true) @CsvBindByPosition(position = 1) private String gwmlGUID; @CsvBindByName(column = "MXML GUID",

问题 I'm trying to write an elegant Spock specification that will read a very large test data from CSV file without loading all the data into the memory. I'm looking for your feedback on how you might do it better than what I currently have here. Let's assume my simplified CSV file looks like the below:- 1,2 3,4 5,6 The assertion is "column 1" + 1 == "column 2" I'm using OpenCSV to do my CSV parsing simply because the actual CSV file contains strings with special characters like double quotes and

问题 I have a CSV file which I want to parse in Java with OpenCSV's csvreader. To do so I have created a bean object to which the information is mapped. Mine is a bit long so here's an example I got from a tutorial : package net.viralpatel.java; public class Country { private String countryName; private String capital; public String getCountryName() { return countryName; } public void setCountryName(String countryName) { this.countryName = countryName; } public String getCapital() { return capital

问题 I am working with opencsv(2.3), i create the header of the csv from the properties file which contains special chracters. I encode using UTF-8 and set the property as a header to csv. But I still see CSV file created doesnt reflect the encoding. (I used the same approach to create PDF using jasperreports, there i could see the columns with special characters are encoded well and shown properly) Java version : 7 properties file content: (é is getting stored as é and ü is stored as ü) lan

问题 There are 40 csv files; file1.csv, file2.csv. ..., file40.csv in a folder called pathImage. I want to read them, and put them in another csv file sequentially that we called 'output.csv'. The following code does not work for me. im_list=[] for i in pathImage: f= open(i, 'rb') reader = csv.reader(f, delimiter=',') header = reader.next() zipped = zip(*reader) for j in zipped[0]: #zipped[0] is the name of images im_r=misc.imread("%s.png" %j) im_list.append(im_r) I already read the previous

问题 I'm trying to export a SQL resultset to a comma delimited csv file using opencsv library. However when I pass the result set to the writeAll function, all works well except for the file that it generates does not separates the rows with a new line and creates a nearly un readable file when opened in notepad. Albeit the file that is created is valid and delimits well when imported into excel. However, I need the file this code generates to be readable when opened with a simple text editor. Any

问题 I try to create table from CSV file which is save into HDFS. The problem is that the csv consist line break inside of quote. Example of record in CSV: ID,PR_ID,SUMMARY 2063,1184,"This is problem field because consists line break This is not new record but it is part of text of third column " I created hive table: CREATE TEMPORARY EXTERNAL TABLE hive_database.hive_table ( ID STRING, PR_ID STRING, SUMMARY STRING ) row format serde 'com.bizo.hive.serde.csv.CSVSerde' with serdeproperties (

问题 I've tried several popular CSV to java deserializers - OpenCSV, JSefa, and Smooks - none correctly read the file: First Name,Last Name エリック,山中 花子,鈴木 一郎,鈴木 裕子,田中 政治,山村 into my java object collection. OpenCsv code: HeaderColumnNameTranslateMappingStrategy<Contact> strat = new HeaderColumnNameTranslateMappingStrategy<Contact>(); strat.setType(Contact.class); strat.setColumnMapping(colNameTranslateMap); InputStreamReader fileReader=null; CsvToBean<Contact> csv = new CsvToBean<Contact>();

问题 In my csv file i have some paths,, and open Csv is reading path without"\",, for example: C:\abc\ab.txt is readed as C:abcab.txt . I want to read the as it is without any change ?? 回答1: For OpenCSV, '\' is default escape character. You can change default escape character: CSVReader reader = new CSVReader( new FileReader("E:\\download\\sample.csv"), CSVParser.DEFAULT_SEPARATOR, CSVParser.DEFAULT_QUOTE_CHARACTER, '#'); By the way, you can try jCSV. 来源： https://stackoverflow.com/questions

问题 I'm trying to parse the csv files and I need to determine the type of each field starting from its string value. for examples: val row: Array[String] = Array("1/1/06 0:00","3108 OCCIDENTAL DR","3","3C","1115") this is what I would get: row(0) --> Date row(1) --> String row(2) --> Int Ecc.... how can I do? ------------------------------------ SOLUTION ------------------------------------ This is the solution I've found to recognize the fields String, Date, Int, Double and Boolean. I hope that