Question

我正在尝试通过发出HTTP请求更新Android中的MySQL数据，但它给了我一个错误

“类型不匹配：无法从org.apache.http.HttpResponse转换为com.google.api.client.http.HttpResponse”

在这行代码“httpClient.execute（httpPost）”

上

HttpResponse response = httpClient.execute(httpPost);

它通过添加org.apache.http等提供快速修复的选项和选项

org.apache.http.HttpResponse response = httpClient.execute(httpPost);

有人可以告诉我这里我做错了什么吗？非常感谢你！

protected String doInBackground(String... params) {

    HttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost("http://---.com/---/approve_request.php");

    List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
    nameValuePair.add(new BasicNameValuePair("status", "Approved"));

    try {
          httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
        } catch (UnsupportedEncodingException e) {              
           e.printStackTrace();
        }

           try {
              org.apache.http.HttpResponse response = httpClient.execute(httpPost);  
              Log.d("Http Response:", response.toString());

         } catch (ClientProtocolException e) {             
              e.printStackTrace();

         } catch (IOException e) {              
              e.printStackTrace();

         }

    return null;
    }

Answer 1

您的代码中的import语句错误。

转到课堂顶部并寻找

import com.google.api.client.http.HttpResponse

替换为

import org.apache.http.HttpResponse

Answer 2

使用import org.apache.http.HttpResponse; 而不是import com.google.api.client.http.HttpResponse;

Answer 3

你会有

    import com.google.api.client.http.HttpResponse;

在源代码顶部的导入列表中。

请将其更新至

    import org.apache.http.HttpResponse;.

httpClient.execute(httpPost);正在返回org.apache.http.HttpResponse个对象，并且导入类型不正确，您试图将其转换为com.google.api.client.http.HttpResponse，这会导致问题。

Answer 4

org.apache.http.HttpResponse和com.google.api.client.http.HttpResponse是两个完全独立且不同的Java类。你不能只是简单地拿一个并将其转换为另一个。如果您使用的是Apache HttpClient，那么它将始终返回org.apache.http.HttpResponse，而不是Android版本。如果你确实想使用Apache的HttpClient，那么我建议你坚持使用Apache版本而不是Android版本的HttpResponse，并根据需要直接提取标题/内容。

Answer 5

    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.NameValuePair;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.message.BasicNameValuePair;

     InputStream is = null;
     ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    nameValuePairs.add(new BasicNameValuePair("status", "Approved"));


        try {
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(
                ""http://---.com/---/approve_request.php"");
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        is = entity.getContent();
    } catch (Exception e) {
        Log.e("log_tag", "Error in http connection " + e.toString());
    }

类型不匹配：无法从org.apache.http.HttpResponse转换

5 个答案: