将Android连接到远程服务器非常有趣,也很令人焦虑。以下链接将帮助您满足需求。
使用Php Mysql连接Android
使用servlets进行Android连接
如果您想通过使用HttpUrlConnection从Android设备连接服务器,请按照下面的代码操作。
private static JSONObject get(Context ctx, String sUrl) {
HttpURLConnection connection = null;
try {
URL url = new URL(sUrl);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("Accept", "application/json");
connection.setRequestProperty("Authorization",
"Basic " + encodedAuthentication);
connection.setRequestProperty("Accept-Charset", "utf-8,*");
Log.d("Get-Request", url.toString());
try {
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line).append("\n");
}
bufferedReader.close();
Log.d("Get-Response", stringBuilder.toString());
return new JSONObject(stringBuilder.toString());
} finally {
connection.disconnect();
}
} catch (Exception e) {
Log.e("ERROR", e.getMessage(), e);
return null;
}
}
private static String buildSanitizedRequest(String url,
Map<String, String> mapOfStrings) {
Uri.Builder uriBuilder = new Uri.Builder();
uriBuilder.encodedPath(url);
if (mapOfStrings != null) {
for (Map.Entry<String, String> entry : mapOfStrings.entrySet()) {
Log.d("buildSanitizedRequest", "key: " + entry.getKey()
+ " value: " + entry.getValue());
uriBuilder.appendQueryParameter(entry.getKey(),
entry.getValue());
}
}
String uriString;
try {
uriString = uriBuilder.build().toString();
} catch (Exception e) {
Log.e("Exception", "Exception" + e);
}
return uriBuilder.build().toString();
}
而JSON调用部分应该如下所示:
public static JSONObject exampleGetMethod(Context ctx, String sUrl, String username, String password) throws JSONException, IOException {
Map<String, String> request = new HashMap<String, String>();
request.put("username", username);
request.put("password",password);
sUrl = sUrl + "yourApiName";
return get(ctx, buildSanitizedRequest(sUrl, request));
}