有没有办法将Text转换为int？

Question

给我带来麻烦的代码是将Text（）中的内容转换为int，以便我可以使用一些算术。我知道如何将字符串转换为int，但由于某种原因，Hadoop需要将文件中的项目作为TExt（）读取。我无法找到执行此转换的方法。关于如何做到这一点的任何想法？

    package BaseballStats;
    import java.io.IOException;
    import java.util.Iterator;

    import mrtools.CountMap;
    import mrtools.NBest;

    import org.apache.hadoop.io.Text;
    import org.apache.hadoop.mapred.MapReduceBase;
    import org.apache.hadoop.mapred.OutputCollector;
    import org.apache.hadoop.mapred.Reducer;
    import org.apache.hadoop.mapred.Reporter;

    public class StatReducer extends MapReduceBase
    implements Reducer<Text, Text, Text, Text[]> {

        private Text Hits = new Text(); 
        private Text AtBats = new Text();
        //private Text Year = new Text();   
        int totalAtBats = 0;
        int totalHits = 0;
        float average = 0;
        Text [] Pair = {AtBats, Hits};

        public void reduce(Text key, Iterator<Text> values,
                        OutputCollector<Text, Text[]> output,
                        Reporter reporter) throws IOException {

            //Need to pull values from the Array and assign to AtBats    
            //THen total all at bats and hits per year (key)

            //Divide hits by at Bats to get batting average
            //Output batting average per year

            for (Text s: Pair) {           
                //Do your stuff here

                Pair[0] = AtBats;
                Pair[1] = Hits;
            }
            //Get values to key to sum up and get a total per year.
            while (values.hasNext()){
                int AB = Integer.parseInt(AtBats);
                int i = Integer.valueOf(AtBats);

                totalAtBats = AB + totalAtBats;

            }
        }
    }

Answer 1

您可以先使用Text方法将.toString()转换为字符串，然后将结果转换为int。