del格式类似csv，我这里的测试文件test.del是从DB2数据库中导出来的一组数据。
apache commons csv的maven坐标为：
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-csv --><dependency> ???<groupId>org.apache.commons</groupId> ???<artifactId>commons-csv</artifactId> ???<version>1.5</version></dependency>测试程序：
package test;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.Reader;import java.util.ArrayList;import java.util.List;import org.apache.commons.csv.CSVFormat;import org.apache.commons.csv.CSVParser;import org.apache.commons.csv.CSVRecord;public class DelFileParser { ???????public static List< List<String> > parseFile(File file) { ??????????????List resList = new ArrayList< List<String> >(); ???????try { ???????????InputStream is = new FileInputStream(file); ?????????????InputStreamReader reader = new InputStreamReader(is, "GB2312"); ?????????????CSVParser parser = new CSVParser(reader, CSVFormat.DEFAULT); ???????????for (CSVRecord record : parser) { ???????????????List<String> tmpList = new ArrayList<String>(); ???????????????for (String s : record) { ???????????????????if (s != null) ????????????????????????s = s.trim(); ???????????????????tmpList.add(s); ???????????????} ???????????????resList.add(tmpList); ???????????} ???????????is.close(); ???????????reader.close(); ???????????return resList; ???????} catch (IOException e) { ???????????e.printStackTrace(); ???????????return null; ???????} ???} ???????public static void main(String[] args) { ???????List< List<String> > resList = parseFile(new File("D:\\test.del")); ???????// test ???????for (List<String> tmpList : resList) { ???????????for (String s : tmpList) { ???????????????System.out.print(s + ","); ???????????} ???????????System.out.println(); ???????} ???}}采用default格式不会将第一行当成Header。
更多资料参见：http://commons.apache.org/proper/commons-csv/user-guide.html
使用apache commons csv解析del（类似csv）格式文件
原文地址：https://www.cnblogs.com/zifeiy/p/9175837.html