跟着教程学习MP3播放器编写，遇到奇怪事，扩展名为MP3、jpg、gif的都可以下载，唯独lrc的下载总失败，实在找不到
跟着教程学习MP3播放器编写，遇到奇怪事，扩展名为MP3、jpg、gif的都可以下载，唯独lrc的下载总失败，实在找不到原因了，求助！
跟着教程学习MP3播放器编写，实现了从自己搭建的服务器下载MP3文件，并播放的功能，但是遇到一个问题，我的下载程序的代码在运行时，下载a01.mp3、a01.jpg、a01.gif、a01.txt等文件都可以正常下载，唯独下载a01.lrc文件时出现异常，下载失败。但如果把a01.lrc文件名改为a01.txt，就可以下载成功，实在找不出问题原因了，请大家帮忙，必结贴！
代码如下：
负责下载的线程的代码：mp3Name的值赋为01.mp3、a01.jpg、a01.gif、a01.txt等文件都可以正常下载，唯独下载a01.lrc文件时出现异常。
class DownloadThread implements Runnable {
private Mp3Info mp3Info = null;
public DownloadThread(Mp3Info mp3Info) {
this.mp3Info = mp3Info;
}
@Override
public void run() {
// 下载地址http://192.168.1.102/testWeb/歌曲名
// 根据MP3文件的名字，生成下载地址
//String mp3Name = mp3Info.getMp3Name();
//String mp3Name = "a04.lrc";
String mp3Name="";
try {
mp3Name = URLEncoder.encode("a04.lrc","UTF-8");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String mp3Url = mp3url_head + URLEncoder.encode(mp3Name);
// //生成下载文件所用的对象
// HttpDownloader httpDownloader = new HttpDownloader();
// 将文件下载下来，并存储到SDCard中
int result = httpDownloader.downFile(mp3Url, mp3Path, URLEncoder.encode(mp3Name));
String resultMessage = null;
if (result == -1) {
resultMessage = mp3Name + "下载失败";
cancelled = true;
} else if (result == 1) {
resultMessage = mp3Name + "已存在，无需重复下载";
cancelled = true;
} else if (result == 0) {
resultMessage = mp3Name + "下载成功";
}
// 发送特定action的广播
Intent Broadcastintent = new Intent();
Broadcastintent.setAction("android.intent.action.MY_RECEIVER");
Broadcastintent.putExtra("resultMessage", resultMessage);
sendBroadcast(Broadcastintent);
}
}
httpDownloader.downFile代码
/**
* 该函数返回整形 -1：代表下载文件出错 0：代表下载文件成功 1：代表文件已经存在
*/
public int downFile(String urlStr, String path, String fileName) {
InputStream inputStream = null;
try {
if (fileUtils.isFileExist(fileName, path)) {
return 1;
} else {
inputStream = getInputStreamFromUrl(urlStr);
File resultFile = fileUtils.write2SDFromInput(path, fileName,
inputStream);
if (resultFile == null) {
return -1;
}
}
} catch (Exception e) {
e.printStackTrace();
return -1;
} finally {
try {
inputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return 0;
}
getInputStreamFromUrl代码
public InputStream getInputStreamFromUrl(String urlStr)
throws MalformedURLException, IOException {
url = new URL(urlStr);
HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
urlConn.setRequestMethod("GET");
InputStream inputStream = urlConn.getInputStream();
this.lenghtOfFile = urlConn.getContentLength();
return inputStream;
}
fileUtils.write2SDFromInput代码
/**
* 将一个InputStream里面的数据写入到SD卡中
*/
public File write2SDFromInput(String path, String fileName,
InputStream input) {
File file = null;
OutputStream output = null;
try {
creatSDDir(path);
file = createFileInSDCard(fileName, path);
output = new FileOutputStream(file);
byte buffer[] = new byte[4 * 1024];
int temp;
while ((temp = input.read(buffer)) != -1) {
this.total += temp;// total = total + temp
output.write(buffer, 0, temp);
}
output.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
output.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return file;
}
异常情况：
08-01 09:24:37.934: W/System.err(7773): java.io.FileNotFoundException: http://192.168.1.100/testWeb/a04.lrc
08-01 09:24:37.934: W/System.err(7773): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:1162)
08-01 09:24:37.944: W/System.err(7773): at hk.download.HttpDownloader.getInputStreamFromUrl(HttpDownloader.java:108)
08-01 09:24:37.944: W/System.err(7773): at hk.download.HttpDownloader.downFile(HttpDownloader.java:75)
08-01 09:24:37.954: W/System.err(7773): at hk.mp3player.service.DownloadService$DownloadThread.run(DownloadService.java:175)
08-01 09:24:37.954: W/System.err(7773): at java.lang.Thread.run(Thread.java:1096)
08-01 09:24:37.954: W/System.err(7773): java.lang.NullPointerException
08-01 09:24:37.954: W/System.err(7773): at hk.download.HttpDownloader.downFile(HttpDownloader.java:87)
08-01 09:24:37.954: W/System.err(7773): at hk.mp3player.service.DownloadService$DownloadThread.run(DownloadService.java:175)
08-01 09:24:37.964: W/System.err(7773): at java.lang.Thread.run(Thread.java:1096)
08-01 09:24:38.004: W/System.err(7773): java.io.FileNotFoundException: http://192.168.1.100/testWeb/a03.lrc
08-01 09:24:38.004: W/System.err(7773): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:1162)
08-01 09:24:38.014: W/System.err(7773): at hk.download.HttpDownloader.getInputStreamFromUrl(HttpDownloader.java:108)
08-01 09:24:38.014: W/System.err(7773): at hk.download.HttpDownloader.downFile(HttpDownloader.java:75)
08-01 09:24:38.014: W/System.err(7773): at hk.mp3player.service.DownloadService$DownloadlrcThread.run(DownloadService.java:215)
08-01 09:24:38.014: W/System.err(7773): at java.lang.Thread.run(Thread.java:1096)
08-01 09:24:38.014: W/System.err(7773): java.lang.NullPointerException
08-01 09:24:38.064: W/System.err(7773): at hk.download.HttpDownloader.downFile(HttpDownloader.java:87)
08-01 09:24:38.064: W/System.err(7773): at hk.mp3player.service.DownloadService$DownloadlrcThread.run(DownloadService.java:215)
08-01 09:24:38.064: W/System.err(7773): at java.lang.Thread.run(Thread.java:1096)
请大家帮帮忙！看看到底哪里出了问题，谢谢！！！
[解决办法]
FileNotFoundException 文件没找到
是不是跟服务器设置有关?
[解决办法]
解决办法，在IIS中设置.lrc的MIME，操作办法图文说明：
http://blog.csdn.net/aminfo/article/details/7820520
[解决办法]
这是MARS老师的源码，很不错的，一是你的服务器有没有.LRC文件，想必这个原因的可能性不大，其次是服务器的原因，楼上的方法试试的，真心的不懂
[解决办法]
我之前也有 APK文件找不到 是服务器上没有这种文件的类型 要自己添加