安卓httpPost库

Question

这有点让我觉得..。我试图创建httpPost代码：

​

private void makePostRequest() {


        HttpClient httpClient = new DefaultHttpClient();
        // replace with your url
        HttpPost httpPost = new HttpPost("www.example.com");


        //Post Data
        List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
        nameValuePair.add(new BasicNameValuePair("username", "test_user"));
        nameValuePair.add(new BasicNameValuePair("password", "123456789"));


        //Encoding POST data
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
        } catch (UnsupportedEncodingException e) {
            // log exception
            e.printStackTrace();
        }

        //making POST request.
        try {
            HttpResponse response = httpClient.execute(httpPost);
            // write response to log
            Log.d("Http Post Response:", response.toString());
        } catch (ClientProtocolException e) {
            // Log exception
            e.printStackTrace();
        } catch (IOException e) {
            // Log exception
            e.printStackTrace();
        }

    }

​

但总是结束不了符号。我使用了Android的最新更新，我已经从http://mirror.metrocast.net/apache//httpcomponents/httpclient/binary/httpcomponents-client-4.5-bin.zip下载了hc.apache.org，并将jar文件(httpclient-4.5.jar和httpcore-4.4.1.jar)复制到库中，并将其添加为一个库，但不知怎么的，它不起作用。

它会产生错误：

错误:任务执行失败“：app:packageDebug”。复制文件复制在APK /依赖项文件1: Z:\Learning\Android-2\Live-code-AS\SendLocation\app\libs\httpcore-4.4.1.jar文件2: Z:\Learning\Android-2\Live-code-AS\SendLocation\app\libs\httpclient-4.5.jar

如果我删除一个jar文件，我就会得到“无法解析HttpClient或NameValuePair”

请帮忙..。谢谢你之前。

Answer 1

在依赖项中有一些重复的文件。要解决这个问题，请打开您定义依赖项的build.gradle，并在android-部分中添加packagingOptions-部分：

android {
    packagingOptions {
       exclude 'META-INF/DEPENDENCIES'
    }
}