有一个诸如这样的log日志
去除长度不合法,并且状态码不正确的记录
LogBean
package com.nty.elt; /**
* author nty
* date time 2018-12-14 15:27
*/
public class Log { private String remote_addr;// 记录客户端的ip地址
private String remote_user;// 记录客户端用户名称,忽略属性"-"
private String time_local;// 记录访问时间与时区
private String request;// 记录请求的url与http协议
private String status;// 记录请求状态；成功是200
private String body_bytes_sent;// 记录发送给客户端文件主体内容大小
private String http_referer;// 用来记录从那个页面链接访问过来的
private String http_user_agent;// 记录客户浏览器的相关信息 private boolean valid = true;// 判断数据是否合法 public String getRemote_addr() {
return remote_addr;
} public Log setRemote_addr(String remote_addr) {
this.remote_addr = remote_addr;
return this;
} public String getRemote_user() {
return remote_user;
} public Log setRemote_user(String remote_user) {
this.remote_user = remote_user;
return this;
} public String getTime_local() {
return time_local;
} public Log setTime_local(String time_local) {
this.time_local = time_local;
return this;
} public String getRequest() {
return request;
} public Log setRequest(String request) {
this.request = request;
return this;
} public String getStatus() {
return status;
} public Log setStatus(String status) {
this.status = status;
return this;
} public String getBody_bytes_sent() {
return body_bytes_sent;
} public Log setBody_bytes_sent(String body_bytes_sent) {
this.body_bytes_sent = body_bytes_sent;
return this;
} public String getHttp_referer() {
return http_referer;
} public Log setHttp_referer(String http_referer) {
this.http_referer = http_referer;
return this;
} public String getHttp_user_agent() {
return http_user_agent;
} public Log setHttp_user_agent(String http_user_agent) {
this.http_user_agent = http_user_agent;
return this;
} public boolean isValid() {
return valid;
} public Log setValid(boolean valid) {
this.valid = valid;
return this;
} @Override
public String toString() { StringBuilder sb = new StringBuilder();
sb.append(this.valid);
sb.append("\001").append(this.remote_addr);
sb.append("\001").append(this.remote_user);
sb.append("\001").append(this.time_local);
sb.append("\001").append(this.request);
sb.append("\001").append(this.status);
sb.append("\001").append(this.body_bytes_sent);
sb.append("\001").append(this.http_referer);
sb.append("\001").append(this.http_user_agent); return sb.toString();
} }
Mapper类
package com.nty.elt; import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper; import java.io.IOException; /**
* author nty
* date time 2018-12-14 15:28
*/
public class LogMapper extends Mapper<LongWritable, Text, Text, NullWritable> { private Text logKey = new Text(); @Override
protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
//分割一行数据
String[] fields = value.toString().split(" "); Log result = parseLog(fields); if (!result.isValid()) {
return;
} logKey.set(result.toString()); // 3 输出
context.write(logKey, NullWritable.get());
} private Log parseLog(String[] fields) { Log log = new Log(); if (fields.length > 11) {
log.setRemote_addr(fields[0])
.setRemote_user(fields[1])
.setTime_local(fields[3].substring(1))
.setRequest(fields[6])
.setStatus(fields[8])
.setBody_bytes_sent(fields[9])
.setHttp_referer(fields[10]);
if (fields.length > 12) {
log.setHttp_user_agent(fields[11] + " " + fields[12]);
} else {
log.setHttp_user_agent(fields[11]);
}
// 大于400，HTTP错误
if (Integer.parseInt(log.getStatus()) >= 400) {
log.setValid(false);
}
} else {
log.setValid(false);
} return log;
} }
Driver
package com.nty.elt; import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; /**
* author nty
* date time 2018-12-14 15:40
*/
public class LogDriver { public static void main(String[] args) throws Exception {
// 1 获取job信息
Configuration conf = new Configuration();
Job job = Job.getInstance(conf); // 2 加载jar包
job.setJarByClass(LogDriver.class); // 3 关联map
job.setMapperClass(LogMapper.class); // 4 设置最终输出类型
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(NullWritable.class); // 5 设置输入和输出路径
FileInputFormat.setInputPaths(job, new Path("d:\\Hadoop_test"));
FileOutputFormat.setOutputPath(job, new Path("d:\\Hadoop_test_out")); // 6 提交
job.waitForCompletion(true); }
}
结果