android http下载

public class HttpDownload {

URL url = null ;
HttpURLConnection conn = null ;

public HttpDownload(){

}

//下载文本文件
public String down(String urlStr){
StringBuffer sb = new StringBuffer();
BufferedReader br = null ;
URL url = null ;
String temp = null;
HttpURLConnection conn = null ;
try {
//通过传入的urlStr得到一个URL
url = new URL(urlStr);
//通过URL得到一个HttpURLConnection
conn = (HttpURLConnection) url.openConnection();
br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
while((temp = br.readLine()) != null){
sb.append(temp);
sb.append("\n");
}
} catch (Exception e) {
e.printStackTrace();
}

return sb.toString();
}
/**
* 可下载非文本文件。函数返回类型 0 ：下载成功 -1 ：下载失败 1 ：文件已存在
* @param urlStr
* @param path
* @param fileName
* @return
*/
public int downFile(String urlStr , String path , String fileName ){
InputStream is = null ;
File result = null ;
try {
FileUtils fileUtils = new FileUtils();
if(fileUtils.isFileExist(path, fileName)){
return 1 ;
}else{
url = new URL(urlStr);
conn = (HttpURLConnection) url.openConnection();
is = conn.getInputStream();
if(fileName.endsWith(".lrc")){
result = fileUtils.writeText2SDFromInput(path, fileName, is);
}else if(fileName.endsWith(".mp3")){
result = fileUtils.writeFile2SDFromInput(path, fileName, is);
}
if(result != null){
return 0 ;
}else{
return -1 ;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return -1 ;
}

}

更多相关文章

随机推荐