java Android库使用asp。NETWebAPI

Question

我正在用asp构建一个web服务。net web api，以便与安卓应用程序对话

有什么好的、简单的库可以与安卓一起工作，从而使连接到web服务变得快捷和简单

我正在寻找一些将我排除在较低级别的网络和线程之外的东西，并且我可以将我的安全性集成到其中。（基于令牌的身份验证）

我曾经遇到过一个库，用于发出asyn http请求，但我似乎再也找不到它了。这就是为什么我想问问其他人在用什么，看看他们会推荐什么

Answer 1

@Zapnologica:您可以将本机HttpClient和Gson结合起来，向ASP的REST web服务发出请求。NET Web API，如下面的post。如果您仍然需要高级解决方案，那么您可以使用AndroidAnnotations+Spring Framework+Gson，就像本post中的第3.2节一样。不过，我建议您在HttpClient中使用第一种方法，因为您可以在以后轻松地自定义代码

更新：

例如，使用HttpClient方法，从第一篇文章开始，您可以创建一个JSONHttpClient，它为您解析JSON对象，并向您的web服务发送/接收

public class JSONHttpClient {
    public <T> T PostObject(final String url, final T object, final Class<T> objectClass) {
        DefaultHttpClient defaultHttpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        try {

            StringEntity stringEntity = new StringEntity(new GsonBuilder().create().toJson(object));
            httpPost.setEntity(stringEntity);
            httpPost.setHeader("Accept", "application/json");
            httpPost.setHeader("Content-type", "application/json");
            httpPost.setHeader("Accept-Encoding", "gzip");

            HttpResponse httpResponse = defaultHttpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            if (httpEntity != null) {
                InputStream inputStream = httpEntity.getContent();
                Header contentEncoding = httpResponse.getFirstHeader("Content-Encoding");
                if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
                    inputStream = new GZIPInputStream(inputStream);
                }

                String resultString = convertStreamToString(inputStream);
                inputStream.close();
                return new GsonBuilder().create().fromJson(resultString, objectClass);

            }

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        } catch (ClientProtocolException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        } catch (IOException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
        return null;
    }

    public <T> T PostParams(String url, final List<NameValuePair> params, final Class<T> objectClass) {
        String paramString = URLEncodedUtils.format(params, "utf-8");
        url += "?" + paramString;
        return PostObject(url, null, objectClass);
    }

    private String convertStreamToString(InputStream inputStream) {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
        StringBuilder stringBuilder = new StringBuilder();
        String line = null;
        try {
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        } finally {
            try {
                inputStream.close();
            } catch (IOException e) {
                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
            }
        }

        return stringBuilder.toString();
    }

    public <T> T Get(String url, List<NameValuePair> params, final Class<T> objectClass) {
        DefaultHttpClient defaultHttpClient = new DefaultHttpClient();
        String paramString = URLEncodedUtils.format(params, "utf-8");
        url += "?" + paramString;
        HttpGet httpGet = new HttpGet(url);
        try {

            httpGet.setHeader("Accept", "application/json");
            httpGet.setHeader("Accept-Encoding", "gzip");

            HttpResponse httpResponse = defaultHttpClient.execute(httpGet);
            HttpEntity httpEntity = httpResponse.getEntity();
            if (httpEntity != null) {
                InputStream inputStream = httpEntity.getContent();
                Header contentEncoding = httpResponse.getFirstHeader("Content-Encoding");
                if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
                    inputStream = new GZIPInputStream(inputStream);
                }

                String resultString = convertStreamToString(inputStream);
                inputStream.close();
                return new GsonBuilder().create().fromJson(resultString, objectClass);

            }

        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        } catch (ClientProtocolException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        } catch (IOException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
        return null;
    }

    public boolean Delete(String url, final List<NameValuePair> params) {
        DefaultHttpClient defaultHttpClient = new DefaultHttpClient();
        String paramString = URLEncodedUtils.format(params, "utf-8");
        url += "?" + paramString;
        HttpDelete httpDelete = new HttpDelete(url);

        HttpResponse httpResponse = null;
        try {
            httpResponse = defaultHttpClient.execute(httpDelete);
            return httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_NO_CONTENT;
        } catch (IOException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }

        return false;
    }
}