使用apache commons csv解析del（类似csv）格式文件

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