Question

您好我的文件名为personal.html：

import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.FloatWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;

public class AvgDriver extends Configured implements Tool{

    public static class ImcdpMap extends Mapper<LongWritable, Text, IntWritable, IntWritable> {

        String record;

        protected void map(LongWritable key, Text value, Mapper.Context context) throws IOException, InterruptedException {
            record = value.toString();
            String[] fields = record.split(",");

            Integer s_id = new Integer(fields[0]);
            Integer marks = new Integer(fields[2]);
            context.write(new IntWritable(s_id), new IntWritable(marks));
        } // end of map method
    } // end of mapper class


    public static class ImcdpReduce extends Reducer<IntWritable, IntWritable, IntWritable, FloatWritable> {

        protected void reduce(IntWritable key, Iterable<IntWritable> values, Reducer<IntWritable, IntWritable, IntWritable, FloatWritable>.Context context) throws IOException, InterruptedException {
            Integer s_id = key.get();
            Integer sum = 0;
            Integer cnt = 0;

            for (IntWritable value:values) {
                sum = sum + value.get();
                cnt = cnt + 1;
            }

            Float avg_m = (float) (sum/cnt);
            context.write(new IntWritable(s_id), new FloatWritable(avg_m));
        }
    }

    @Override
    public int run(String[] args) throws Exception {
        Configuration conf = new Configuration();
        args = new GenericOptionsParser(conf, args).getRemainingArgs();
        String input = args[0];
        String output = args[1];

        Job job = new Job(conf, "Avg");
        job.setJarByClass(ImcdpMap.class);
        job.setInputFormatClass(TextInputFormat.class);
        job.setMapperClass(ImcdpMap.class);
        job.setMapOutputKeyClass(IntWritable.class);
        job.setMapOutputValueClass(IntWritable.class);

        job.setReducerClass(ImcdpReduce.class);
        job.setOutputFormatClass(TextOutputFormat.class);
        job.setOutputKeyClass(IntWritable.class);
        job.setOutputValueClass(FloatWritable.class);

        FileInputFormat.setInputPaths(job, new Path(input));
        Path outPath = new Path(output);
        FileOutputFormat.setOutputPath(job, outPath);
        outPath.getFileSystem(conf).delete(outPath, true);

        job.waitForCompletion(true);
        return (job.waitForCompletion(true) ? 0 : 1);
    }

    public static void main(String[] args) throws Exception {
        int exitCode = ToolRunner.run(new AvgDriver(), args);
        System.exit(exitCode);
    }
}

从上面的代码中可以看出，我有一个名为＆＃34; us＆＃34;的ID。所以这就是我想通过ajax实现的，但它不起作用，我的

<form id="form_personal">
    <div class="row" style="">
        <div class="row">
            <div class="small-12 columns">
                <label class="">Username:</label>
            </div>
            <div class="small-12 columns">
                <input type="text" name="username" id="us"/>
            </div>

            <div class="small-12 columns">
                <button id="submit" type="submit" class="success button">Submit</button>
            </div>  
        </div>  
    </form>

实际上位于名为profile.html的文件中。所以我通过AJAX加载personal.html到profile.html。

<div class="atest"></div>

我试图将＆＃34; test＆＃34;的价值放入进入我的

$.ajax({

    url: 'some params, ignore this',
    dataType: 'ignore this',
    success: function(r)
    {
        $('.atest').load('personal.html');


    }
}).done(append);

function append()
{
    // alert();
    $('#us').val('test');
}

在personal.html文件中，我该如何实现？

Answer 1

您需要等到personal.html完全加载，因此您应该使用完整的JQuery load方法回调：

$('.atest').load('personal.html', function() {
    //this will run after personal.html has loaded.
    //Do your stuff here
});

Ajax加载一个html文件，然后添加一个值

1 个答案: