Question

由于与http客户端相关的类，我有大量的弃用。

这是我的代码：

    this.httpclient = new DefaultHttpClient();
    HttpGet httpget = new HttpGet(url);
    HttpResponse response = this.httpclient.execute(httpget);
    HttpEntity entity = response.getEntity();
    int statusCode = response.getStatusLine().getStatusCode();
     if (statusCode == HttpStatus.SC_OK) {
        BufferedReader reader = new BufferedReader(
                new InputStreamReader(entity.getContent(),
                        EntityUtils.getContentCharSet(entity))
        );
        String line = null;
        Matcher matcher = null;
        while ((line = reader.readLine()) != null) {
            matcher = matcher == null ? this.resultPattern
                    .matcher(line) : matcher.reset(line);
            if (matcher.matches()) {
                httpget.abort();
                return Double.parseDouble(matcher.group(1));
            }
        }
        httpget.abort();
        throw new MyException("Could not find ["
                + resultPattern.toString() + "] in response to [" + url
                + "]");
    } else {
        if (entity != null) {
            entity.consumeContent();
        }
        throw new MyException("Got [" + statusCode
                + "] in response to [" + url + "]");
    }

DefaultHttpClient 已弃用 HttpResponse 已弃用 HttpEntity 已弃用

我如何修复使用本机库？我搜索了一些人HttpClient使用HttpClientBuilder但需要额外的库，此外我不知道如何解决其他弃用问题。

有些程序员可以帮助我吗？这种大规模弃用的原因是什么？

现在我们应该使用HttpURLConnection，但我还不了解如何将代码迁移到这些库。

Answer 1

我如何使用本机库修复？

我不知道你认为“本土图书馆”在这种情况下是什么。 Android的内置版HttpClient已被Android 5.1弃用，并且已在M Developer Preview中完全删除。

如果您需要坚持使用Apache HttpClient API，请切换到Apache's edition of their library。

或者，切换到任意数量的其他HTTP API，例如内置的HttpUrlConnection，OkHttp等。

这种大规模弃用的原因是什么？

Google has indicated for a few years that you should not use HttpClient;他们现在只是强制执行。

Answer 2

我构建了一个使用标准Java库的HttpUtil类。你可以修改它。我只是将所有内容设置为地图，然后您可以轻松发送帖子或获取。

HttpURLConnection urlConnection;
String CHAR_ENCODING = "UTF-8";
String CONTENT_TYPE_X_WWW_FORM = "application/x-www-form-urlencoded;charset=UTF-8";

public String sendHttpPostRequestWithParams(String url, Map<String, Object> httpPostParams) {
    try {
        byte[] postDataBytes = setParameters(httpPostParams).toString().getBytes(CHAR_ENCODING);

        URL post = new URL(url);
        urlConnection = (HttpURLConnection) post.openConnection();
        urlConnection.setDoOutput(true);
        urlConnection.setRequestProperty("Accept-Charset", CHAR_ENCODING);
        urlConnection.setRequestProperty("Content-Type", CONTENT_TYPE_X_WWW_FORM);
        urlConnection.setRequestProperty("Content-Length", String.valueOf(postDataBytes.length));
        urlConnection.getOutputStream().write(postDataBytes);

        return convertStreamToString(urlConnection.getInputStream());
    } catch (IOException e) {
        e.printStackTrace();
        return Constants.GSON.toJson(new BaseResponse(ResponseCodes.SERVICE_NOT_FOUND.getCode(),
                ResponseCodes.SERVICE_NOT_FOUND.getMessage()));
    }
}

public String sendHttpGetRequestWithParams(String stringUrl, Map<String, Object> params) {
    try {
        URL url = new URL(stringUrl + "?" + setParameters(params));
        urlConnection = (HttpURLConnection) url.openConnection();

        return convertStreamToString(urlConnection.getInputStream());
    } catch (IOException e) {
        e.printStackTrace();
        return Constants.GSON.toJson(new BaseResponse(ResponseCodes.SERVICE_NOT_FOUND.getCode(),
                ResponseCodes.SERVICE_NOT_FOUND.getMessage()));
    }
}

public String setParameters(Map<String, Object> params) {
    try {
        StringBuilder parameters = new StringBuilder();
        for (Map.Entry<String, Object> param : params.entrySet()) {
            if (parameters.length() != 0) {
                parameters.append('&');
            }
            parameters.append(URLEncoder.encode(param.getKey(), CHAR_ENCODING));
            parameters.append('=');
            parameters.append(URLEncoder.encode(String.valueOf(param.getValue()), CHAR_ENCODING));
        }
        return parameters.toString();
    } catch (IOException ex) {
        ex.printStackTrace();
        return null;
    }
}

public String convertStreamToString(InputStream inputStream) {
    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        String temp, response = "";
        while ((temp = reader.readLine()) != null) {
            response += temp;
        }
        return response;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

Answer 3

Google documentation表示您仍然可以使用HTTP Apache API接口。在gradle.build文件中声明以下依赖项：

android {
    useLibrary 'org.apache.http.legacy'
}

Answer 4

如果你正在为Android开发，你应该转移到Volley，这要好得多。这些方法已被弃用，我记得没有其他本地库。

如何使用本机Java库修复多个Http *类和方法已弃用

4 个答案: