gpt4 book ai didi

java - android 获取广播流数据

转载 作者:行者123 更新时间:2023-12-02 06:09:28 26 4
gpt4 key购买 nike

我正在尝试使用以下代码获取正在播放的歌曲:

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class IcyStreamMeta {

protected URL streamUrl;
private Map<String, String> metadata;
private boolean isError;

public IcyStreamMeta(URL streamUrl) {
setStreamUrl(streamUrl);

isError = false;
}

/**
* Get artist using stream's title
*
* @return String
* @throws IOException
*/
public String getArtist() throws IOException {
Map<String, String> data = getMetadata();

if (!data.containsKey("StreamTitle"))
return "";

String streamTitle = data.get("StreamTitle");
String title = streamTitle.substring(0, streamTitle.indexOf("-"));
return title.trim();
}

/**
* Get title using stream's title
*
* @return String
* @throws IOException
*/
public String getTitle() throws IOException {
Map<String, String> data = getMetadata();

if (!data.containsKey("streamdata"))
return "";

String streamTitle = data.get("StreamTitle");
String artist = streamTitle.substring(streamTitle.indexOf("-")+1);
return artist.trim();
}

public Map<String, String> getMetadata() throws IOException {
if (metadata == null) {
refreshMeta();
}

return metadata;
}

public void refreshMeta() throws IOException {
retreiveMetadata();
}

private void retreiveMetadata() throws IOException {
URLConnection con = streamUrl.openConnection();
con.setRequestProperty("Icy-MetaData", "1");
con.setRequestProperty("Connection", "close");
con.setRequestProperty("Accept", null);
con.connect();

int metaDataOffset = 0;
Map<String, List<String>> headers = con.getHeaderFields();
InputStream stream = con.getInputStream();

if (headers.containsKey("Current Song:")) {
// Headers are sent via HTTP
metaDataOffset = Integer.parseInt(headers.get("Current Song:").get(0));
} else {
// Headers are sent within a stream
StringBuilder strHeaders = new StringBuilder();
char c;
while ((c = (char)stream.read()) != -1) {
strHeaders.append(c);
if (strHeaders.length() > 5 && (strHeaders.substring((strHeaders.length() - 4), strHeaders.length()).equals("\r\n\r\n"))) {
// end of headers
break;
}
}

// Match headers to get metadata offset within a stream
Pattern p = Pattern.compile("\\r\\n(icy-metaint):\\s*(.*)\\r\\n");
Matcher m = p.matcher(strHeaders.toString());
if (m.find()) {
metaDataOffset = Integer.parseInt(m.group(2));
}
}

// In case no data was sent
if (metaDataOffset == 0) {
isError = true;
return;
}

// Read metadata
int b;
int count = 0;
int metaDataLength = 4080; // 4080 is the max length
boolean inData = false;
StringBuilder metaData = new StringBuilder();
// Stream position should be either at the beginning or right after headers
while ((b = stream.read()) != -1) {
count++;

// Length of the metadata
if (count == metaDataOffset + 1) {
metaDataLength = b * 16;
}

if (count > metaDataOffset + 1 && count < (metaDataOffset + metaDataLength)) {
inData = true;
} else {
inData = false;
}
if (inData) {
if (b != 0) {
metaData.append((char)b);
}
}
if (count > (metaDataOffset + metaDataLength)) {
break;
}

}

// Set the data
metadata = IcyStreamMeta.parseMetadata(metaData.toString());

// Close
stream.close();
}

public boolean isError() {
return isError;
}

public URL getStreamUrl() {
return streamUrl;
}

public void setStreamUrl(URL streamUrl) {
this.metadata = null;
this.streamUrl = streamUrl;
this.isError = false;
}

public static Map<String, String> parseMetadata(String metaString) {
Map<String, String> metadata = new HashMap();
String[] metaParts = metaString.split(";");
Pattern p = Pattern.compile("^([a-zA-Z]+)=\\'([^\\']*)\\'$");
Matcher m;
for (int i = 0; i < metaParts.length; i++) {
m = p.matcher(metaParts[i]);
if (m.find()) {
metadata.put((String)m.group(1), (String)m.group(2));
}
}

return metadata;
}

}

我想使用的网址来自此页面:http://radio.m-1.fm/例如http://radio.m-1.fm/M-1PLIUS (这是http://84.46.147.81/m1plius/mp3),但我收到错误java.net.SocketException:权限被拒绝任何想法出了什么问题吗?

最佳答案

Manifest.xml 中添加互联网权限

<uses-permission android:name="android.permission.INTERNET"/>

引用此Manifest.permissions

关于java - android 获取广播流数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22013915/

26 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com