Maven cannot find opencsv csv parser

Question

I've come across one problem with maven and opencsv

I am trying to use the csvparser as followed:

import java.io.IOException;
import au.com.bytecode.opencsv.CSVParser;
import org.apache.hadoop.io.*;
import org.apache.hadoop.mapreduce.Mapper;

public class FlightsByCarrierMapper extends
                Mapper<LongWritable, Text, Text, IntWritable> {
    @Override
    protected void map(LongWritable key, Text value, Context context)
            throws IOException, InterruptedException {

        if (key.get() > 0) {
            String[] lines = new
        CSVParser().parseLine(value.toString());
            context.write(new Text(lines[8]), new IntWritable(1));
        }
    }
}

I've added the opencsv dependency and can use the csvreader without problem. The csvparser though cannot be resolved and throws and error whenever I try to compile the code.

Maven then throws the following error.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project FlightsByCarrier: Compilation failure: Compilation failure:
[ERROR] /root/workspace/FlightsByCarrier/src/main/java/com/root/hadoop/FlightsByCarrier/FlightsByCarrierMapper.java:[6,30] error: cannot find symbol
[ERROR] package au.com.bytecode.opencsv
[ERROR] /root/workspace/FlightsByCarrier/src/main/java/com/root/hadoop/FlightsByCarrier/FlightsByCarrierMapper.java:[18,2] error: cannot find symbol

The dependency looks like this right now:

<dependency>
    <groupId>net.sf.opencsv</groupId>
    <artifactId>opencsv</artifactId>
    <version>1.8</version>
</dependency>

Answer 1

It seems the class CSVParser does not exist in opencsv 1.8. This class was introduced in opencsv 2.1.

As such, you need to update your dependency to version 2.1 at least.

<dependency>
    <groupId>net.sf.opencsv</groupId>
    <artifactId>opencsv</artifactId>
    <version>2.1</version>
</dependency>

---

Note that starting with the 3.x branch, the artifact was relocated to the com.opencsv:opencsv coordinate. It would be better to use the latest version of the library:

<dependency>
    <groupId>com.opencsv</groupId>
    <artifactId>opencsv</artifactId>
    <version>3.7</version>
</dependency>

You will need to update your imports also to import com.opencsv.