java读取PHP接口数据的实现方法

<?php
class test{
  //日志路径
  const log_path="e:\phpserver\apache\logs\\error.log";
  //显示的行数
  const pages=50;
  public static function main(){
    header("content-type:text/html;charset=utf-8");
    
    if(!empty($_get['action'])){
      if(!method_exists('test',$_get['action'])){
        echo "404";
      }else{
        self::$_get['action']();
      }
      exit;
    }
  }

  public static function showapachelogs(){
    $test=new test();
    $result=$test->readlogs(self::log_path,self::pages);
    $json=array();
    for($i=0;$i<count($result);$i++){
      $line=$result[$i];
      //注意这里，如果处理会json解析失败
      $line=str_replace("\r\n", "", $line);
      $result[$i]=array("num"=>$i+1,"msg"=>urlencode($line));
    }
    $str=stripslashes(urldecode(json_encode($result)));
    echo $str;
  }
  
  /**
  * 读取日志
  */
  private function readlogs($filepath,$num=20){
    $fp = fopen($filepath,"r");
    $pos = -2; 
    $eof = ""; 
    $head = false;  //当总行数小于num时，判断是否到第一行了 
    $lines = array(); 
    while($num>0){ 
      while($eof != "\n"){ 
        if(fseek($fp, $pos, seek_end)==0){  //fseek成功返回0，失败返回-1 
          $eof = fgetc($fp); 
          $pos--; 
        }else{                //当到达第一行，行首时，设置$pos失败 
          fseek($fp,0,seek_set); 
          $head = true;          //到达文件头部，开关打开 
          break; 
        } 
         
      } 
      array_unshift($lines,fgets($fp)); 
      if($head){ break; }         //这一句，只能放上一句后，因为到文件头后，把第一行读取出来再跳出整个循环 
      $eof = ""; 
      $num--; 
    } 
    fclose($fp); 
    return array_reverse($lines); 
  }
}
test::main();

import java.io.inputstream;
import java.net.httpurlconnection;
import java.net.url;

import org.json.jsonarray;
import org.json.jsonobject;

public class readlogs {
  public static void main(string[] args) throws exception {
    url url = new url("http://localhost/test.php?action=showapachelogs");
    httpurlconnection conn = (httpurlconnection) url.openconnection();
    conn.setconnecttimeout(10000);
    conn.setrequestmethod("get");
    conn.setdoinput(true);
    conn.setdooutput(true);


    // 输出返回结果
    inputstream input = conn.getinputstream();
    int reslen =0;
    byte[] res = new byte[1024];
    stringbuilder sb=new stringbuilder();
    while((reslen=input.read(res))!=-1){
      sb.append(new string(res, 0, reslen));
    }
    
    string jsonstr=sb.tostring();
    //string转换成json
    jsonarray jsonarray=new jsonarray(jsonstr);
    for(int i=0;i<jsonarray.length();i++){
      jsonobject jsonobject=new jsonobject(jsonarray.getstring(i));
      string msg=(string) jsonobject.get("msg");
      int num=(int) jsonobject.get("num");
      system.out.println(num+":"+msg);
    }
  }
}