Notice: Undefined index: phonenum in D:\ruanjian\PhpStudy\PHPTutorial\WWW\pikachu-master\vul\csrf\csrfpost\csrf_post_edit.php on line 31
时间: 2023-11-29 16:47:16 浏览: 46
根据提供的引用内容,这个错误是由于在`csrf_post_edit.php`文件的第31行中使用了未定义的`phonenum`索引导致的。这可能是因为在发送POST请求时,未正确设置`phonenum`参数或者在PHP代码中未正确处理该参数。为了解决这个问题,您可以尝试以下几个步骤:
1.检查发送POST请求时是否正确设置了`phonenum`参数。
2.检查PHP代码中是否正确处理了`phonenum`参数。您可以在代码中添加一些调试语句,例如`var_dump($_POST)`,以查看POST请求中是否包含`phonenum`参数。
3.如果POST请求中确实包含`phonenum`参数,但PHP代码中仍然无法正确处理该参数,则可能需要检查代码中是否存在其他问题,例如变量名拼写错误或语法错误等。
相关问题
利用String类的public boolean matches(String regex)和正则表达式编程:判断手机号码是否满足要求?
好的,针对您的问题,可以使用如下代码判断手机号码是否满足要求:
```
String phoneNum = "12345678901"; // 假设要判断的手机号码为12345678901
boolean isMatch = phoneNum.matches("1[3-9]\\d{9}"); // 判断手机号码是否符合规则
if (isMatch) {
System.out.println("该手机号码符合要求。");
} else {
System.out.println("该手机号码不符合要求。");
}
```
在上面的代码中,我们使用了String类的matches方法,该方法接收一个正则表达式作为参数,判断字符串是否符合该正则表达式的规则。其中,手机号码的正则表达式为:1[3-9]\\d{9},表示以1开头,第二位为3至9之间的任意数字,后面再接9个数字。
本关任务:根据手机流量数据,编写 MapReduce 程序来统计出每个手机号码的一年总流量。
思路:
- Mapper 阶段:将每行数据按照手机号码为 key,流量为 value 发射出去。
- Reducer 阶段:将同一个手机号码的所有流量累加起来,输出结果。
Mapper 代码:
```java
public class MyMapper extends Mapper<LongWritable, Text, Text, LongWritable> {
private Text phoneNum = new Text();
private LongWritable flow = new LongWritable();
@Override
protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String[] fields = value.toString().split("\t");
if (fields.length >= 3) {
phoneNum.set(fields[0]);
flow.set(Long.parseLong(fields[2]));
context.write(phoneNum, flow);
}
}
}
```
Reducer 代码:
```java
public class MyReducer extends Reducer<Text, LongWritable, Text, LongWritable> {
private LongWritable totalFlow = new LongWritable();
@Override
protected void reduce(Text key, Iterable<LongWritable> values, Context context) throws IOException, InterruptedException {
long sum = 0;
for (LongWritable value : values) {
sum += value.get();
}
totalFlow.set(sum);
context.write(key, totalFlow);
}
}
```
完整代码:
```java
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
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.output.FileOutputFormat;
import java.io.IOException;
public class TotalFlow {
public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
Configuration conf = new Configuration();
Job job = Job.getInstance(conf, "total_flow");
job.setJarByClass(TotalFlow.class);
job.setMapperClass(MyMapper.class);
job.setReducerClass(MyReducer.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(LongWritable.class);
FileInputFormat.addInputPath(job, new Path(args[0]));
FileOutputFormat.setOutputPath(job, new Path(args[1]));
System.exit(job.waitForCompletion(true) ? 0 : 1);
}
public static class MyMapper extends Mapper<LongWritable, Text, Text, LongWritable> {
private Text phoneNum = new Text();
private LongWritable flow = new LongWritable();
@Override
protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String[] fields = value.toString().split("\t");
if (fields.length >= 3) {
phoneNum.set(fields[0]);
flow.set(Long.parseLong(fields[2]));
context.write(phoneNum, flow);
}
}
}
public static class MyReducer extends Reducer<Text, LongWritable, Text, LongWritable> {
private LongWritable totalFlow = new LongWritable();
@Override
protected void reduce(Text key, Iterable<LongWritable> values, Context context) throws IOException, InterruptedException {
long sum = 0;
for (LongWritable value : values) {
sum += value.get();
}
totalFlow.set(sum);
context.write(key, totalFlow);
}
}
}
```
运行命令:
```shell
hadoop jar total_flow.jar TotalFlow input output
```
其中,`input` 为输入文件路径,`output` 为输出文件路径。