百度云下载图片

来源：互联网发布：网络推广无限营销编辑：程序博客网时间：2024/04/25 17:48

/*百度云下载图片，根据百度云的规则去做，第一步先从百度云得到AK,SK,buck,object，百度云已经图片或者其它内容写到文件里面去（baiduBCS.getObject(getObjectRequest, destFile);），然后由从本地把文件读出来，利用string转bitmapt 得到图片
*
*
*/

static String host = "bcs.duapp.com";

static String accessKey = "s2p8B6U0iITUIuLltn41221321";//自己去百度去弄
static String secretKey = "sZNGKPeeRsqXoBcLMLkr2s2312312";//自己去百度去弄
static String bucket = "test-pictures";
// ----------------------------------------

static String object = "/testimage";//一定要加"/"，不然得不到

public void initView() {
// TODO Auto-generated method stub

if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}

String putimage="1231231.txt";

getObjectWithDestFile(String putimage);

String rdimage=ReadData(String putimage);

//然后string转成bitmp

Bitmap photo =stringtoBitmap(rdimage);

}

// 从百度云下载图片
private static void getObjectWithDestFile(String putimage) {

File destFile = new File(Environment.getExternalStorageDirectory(),
putimage);

BCSCredentials credentials = new BCSCredentials(accessKey, secretKey);
final BaiduBCS baiduBCS = new BaiduBCS(credentials, host);

GetObjectRequest getObjectRequest = new GetObjectRequest(bucket, object);
baiduBCS.getObject(getObjectRequest, destFile);

}

// 从文件中读出图片

public String ReadData(String putimage) {
String image = "";
File file = new File(Environment.getExternalStorageDirectory()
+ putimage);
BufferedReader reader = null;
try {
System.out.println("以行为单位读取文件内容，一次读一整行：");
reader = new BufferedReader(new FileReader(file));
String tempString = null;
int line = 1;
// 一次读入一行，直到读入null为文件结束
while ((tempString = reader.readLine()) != null) {
// 显示行号
// information.setText(""+ "--" + tempString);
// / System.out.println("line " + line + ": " + tempString);
line++;
image += tempString;
}

reader.close();

return image;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e1) {
}
}
}
// information.setText(""+ "--" + ins);
return image;

}

public Bitmap stringtoBitmap(String string) {
// 将字符串转换成Bitmap类型
Bitmap bitmap = null;
try {
byte[] bitmapArray;
bitmapArray = Base64.decode(string, Base64.DEFAULT);
bitmap = BitmapFactory.decodeByteArray(bitmapArray, 0,
bitmapArray.length);
} catch (Exception e) {
e.printStackTrace();
}

return bitmap;
}

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