和安卓是一个道理,读取json数据
PHP文件:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
<?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();
|
java文件:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
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);
}
}
}
|
以上这篇java读取PHP接口数据的实现方法就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。