InvalidJobConfException。未设置输出目录

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.Job;

public class MyJob {
    public static void main(String[] args) throws Exception {
        Configuration conf = new Configuration();
        Job job = Job.getInstance(conf, "MyJob");
        
        // 设置输入目录
        job.setInputFormatClass(TextInputFormat.class);
        TextInputFormat.addInputPath(job, new Path("input"));

        // 设置输出目录
        job.setOutputFormatClass(TextOutputFormat.class);
        TextOutputFormat.setOutputPath(job, new Path("output"));

        // 设置Mapper和Reducer等其他作业配置

        // 提交作业并等待完成
        System.exit(job.waitForCompletion(true) ? 0 : 1);
    }
}