[英]Java HTTP Server and Resources
我正在使用NanoHTTPd從我的Android應用程序提供文件。 我可以很好地打開.html文件,但它正在嘗試查看圖像,這就是問題所在。 網頁背景圖片等任何內容均不會顯示。
有人對此有任何示例代碼嗎? 我知道nanoHTTPd可以做到這一點。 我在Android和Java方面有豐富的經驗,但這是我第一次使用服務器。
private class MyHTTPD extends NanoHTTPD {
public MyHTTPD() throws IOException {
super(PORT, null);
}
@Override
public Response serve(String uri, String method, Properties header, Properties parms, Properties files) {
Log.d("response", "URI:" + uri + " method: " + method + " header: " + header + " parms: " + parms + " files: " + files);
final StringBuilder buf = new StringBuilder();
for (Entry<Object, Object> kv : header.entrySet())
buf.append(kv.getKey() + " : " + kv.getValue() + "\n");
handler.post(new Runnable() {
@Override
public void run() {
hello.setText(buf);
}
});
String html = null;
InputStream is = null;
if (uri.length() > 3) {
// respond with resource or sub page
// serve image?
if (uri.substring(uri.lastIndexOf("."), uri.length()).equals(".jpg")) {
try {
is = new FileInputStream(Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
Log.d("Serve", "image: " + Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
//serve page
try {
is = new FileInputStream(Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
Log.d("response subpage", Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} else {
// respond with index
try {
is = new FileInputStream(Environment.getExternalStorageDirectory().getPath() + "/WiFile/" + "index.html");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.d("response index", Environment.getExternalStorageDirectory().getPath() + "/WiFile/" + "index.html");
}
byte[] b;
try {
b = new byte[is.available()];
is.read(b);
html = new String(b);
} catch (IOException e) { // TODO Auto-generated catch block
e.printStackTrace();
}
return new NanoHTTPD.Response(HTTP_OK, MIME_HTML, html);
}
}
編輯:
在瀏覽器中打開圖像只會返回很多文本符號(...��k�OOO�...)。 我以錯誤的方式解析圖像嗎?
固定:
就像古斯塔夫(Gustav)所說的那樣,我沒有使用現成的meme類型,但也沒有返回serveFile(.....)。
// serve image?
if (uri.substring(uri.lastIndexOf("."), uri.length()).equals(".jpeg")) {
try {
is = new FileInputStream(Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
mimeType = "image/jpeg";
Log.d("Serve", "image: " + Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
return serveFile(uri, header, new File(Environment.getExternalStorageDirectory().getPath() + "/WiFile"), true);
} catch (FileNotFoundException e) {}
} else {
//serve page
try {
is = new FileInputStream(Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
mimeType = MIME_HTML;
Log.d("response subpage", Environment.getExternalStorageDirectory().getPath() + "/WiFile" + uri);
return serveFile(uri, header, new File(Environment.getExternalStorageDirectory().getPath() + "/WiFile"), true);
} catch (FileNotFoundException e) {}
}
} else {
// respond with index
try {
is = new FileInputStream(Environment.getExternalStorageDirectory().getPath() + "/WiFile/" + "index.html");
mimeType = MIME_HTML;
Log.d("response index", Environment.getExternalStorageDirectory().getPath() + "/WiFile/" + "index.html");
return serveFile(uri, header, new File(Environment.getExternalStorageDirectory().getPath() + "/WiFile"), true);
} catch (FileNotFoundException e) {}
}
無論要將什么作為有效載荷發送,都將MIME_HTML
傳遞給Response
構造函數。 該參數是String
,因此請嘗試
return new NanoHTTPD.Response(HTTP_OK, "image/jpeg", html);
提供(JPEG)圖像時。
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