Question

我创建了一个基于mashape api调用的demo。但是我得到了错误。我尝试了很多建议。但是没有得到任何解决方案。

java代码：

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        new CallMashapeAsync().execute();


    }

    private class CallMashapeAsync extends AsyncTask<String, Integer, HttpResponse<JsonNode>> {

        protected HttpResponse<JsonNode> doInBackground(String... msg) {

            HttpResponse<JsonNode> request = null;
            try {
                request = Unirest.get("https://indianpost.p.mashape.com/getOffices.php?pincode=394101")
                        .header("X-Mashape-Key", "My API")
                        .header("Accept", "application/json")
                        .asJson();
            } catch (UnirestException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

            return request;
        }

        protected void onProgressUpdate(Integer...integers) {
        }

        protected void onPostExecute(HttpResponse<JsonNode> response) {
            String answer = response.getBody().toString();
            TextView txtView = (TextView) findViewById(R.id.textview1);
            txtView.setText(answer);
        }
    }
}

的build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 21
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "com.example.hungama3.myapplication"
        minSdkVersion 16
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.0.0'
    compile files('libs/gson-2.2.4.jar')
    compile files('libs/httpclient-4.3-beta1.jar')
    compile files('libs/mashape-java-client-2.0.10.jar')
    compile files('libs/unirest-java-1.3.0.jar')
    compile files('libs/org.apache.commons.logging-1.1.1.jar')
}

错误：

java.lang.RuntimeException: An error occured while executing doInBackground()
            at android.os.AsyncTask$3.done(AsyncTask.java:300)
            at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
            at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
            at java.util.concurrent.FutureTask.run(FutureTask.java:242)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:841)
     Caused by: java.lang.NoClassDefFoundError: org.apache.http.impl.conn.PoolingHttpClientConnectionManager
            at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:459)
            at com.mashape.unirest.http.options.Options.refresh(Options.java:41)
            at com.mashape.unirest.http.options.Options.<clinit>(Options.java:27)
            at com.mashape.unirest.http.HttpClientHelper.prepareRequest(HttpClientHelper.java:138)
            at com.mashape.unirest.http.HttpClientHelper.request(HttpClientHelper.java:121)
            at com.mashape.unirest.request.BaseRequest.asJson(BaseRequest.java:64)
            at com.example.hungama3.myapplication.MainActivity$CallMashapeAsync.doInBackground(MainActivity.java:33)
            at com.example.hungama3.myapplication.MainActivity$CallMashapeAsync.doInBackground(MainActivity.java:27)
            at android.os.AsyncTask$2.call(AsyncTask.java:288)
            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
            at java.lang.Thread.run(Thread.java:841)

我为http apache库尝试了很多jar文件，但没有得到任何解决方案。如果有人有任何建议，请告诉我。

在try catch中指示“request”的错误焦点行37。

Answer 1

再次修改：

经过第二次思考，实际上android的库已经包含了httpclient（pre android 6.0），你自己包含它，你可能会产生冲突。尝试简单地移除jar并尝试。

删除该行

compile files('libs/httpclient-4.3-beta1.jar')

您可能还需要将其删除

compile files('libs/org.apache.commons.logging-1.1.1.jar')

Answer 2

您是否需要添加HttpComponents作为依赖项？不确定你是否需要像你一样包含HttpClient，android已经包含它了。

Answer 3

对于android删除所有httpclient和httpcore依赖项并添加

compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5.1'    // gradle depedencies

在build.gradle文件中。你将摆脱所有问题，因为android已经有了httpclient和httpcore库。

java.lang.NoClassDefFoundError：org.apache.http.impl.conn.PoolingHttpClientConnectionManager

3 个答案: