Android无法访问org.apache.http.client.HttpClient

问题描述

我使用的是Android的工作室创建一个应用程序，使一个GET请求到服务器。我的code是这样的：

 进口org.apache.http.client.methods.CloseableHtt presponse;
进口org.apache.http.client.methods.HttpGetHC4;
进口org.apache.http.impl.client.CloseableHttpClient;
进口org.apache.http.impl.client.HttpClientBuilder;

公共类HTTPHelper
{
    私人字符串基地;

    公共HTTPHelper（字符串基地）
    {
        this.base =基地;
    }

    公共字符串的doGet（字符串路径）
    {
        尝试
        {
            CloseableHttpClient客户端= HttpClientBuilder.create（）建立（）。
            HttpGetHC4 GET =新HttpGetHC4（路径）;
            CloseableHtt presponse响应= client.execute（获得）;

            返回 ;
        }
        赶上（例外五）
        {
            返回null;
        }
    }
}
 

该proiblem是，Android的工作室，标志着该行

  client.execute（获得）;
 

有一个错误：

说无法访问org.apache.http.client.HttpClient

下面是我的摇篮文件：

 应用插件：com.android.application

安卓{
    compileSdkVersion 23
    buildToolsVersion23.0.0

    defaultConfig {
        的applicationIDprincipal.halloween
        的minSdkVersion 16
        targetSdkVersion 23
        版本code 1
        VERSIONNAME1.0
    }
    buildTypes {
        推出 {
            minifyEnabled假
            proguardFiles getDefaultProguardFile（'ProGuard的-android.txt'），'proguard-rules.pro
        }
    }
}

依赖{
    编译文件树（导演：库，包括：['的* .jar']）
    编译com.android.support:appcompat-v7:23.0.0
    编译com.pubnub：pubnub-安卓3.7.5
    编译com.google code.gson：GSON：2.3.1
    编译组：org.apache.httpcomponents，名称：HttpClient的，Android的版本：4.3.5.1
    编译org.apache.httpcomponents：HttpClient的：4.3.6

}
 

解决方案

在Android SDK中23

HttpClient的是pcated，因为它的推理，就可以迁移code。在的HttpURLConnection

德$ P $

https://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-apache-http-client

您可以利用这一点，但我们不推荐了。

 安卓{
    useLibraryorg.apache.http.legacy
}
 

对于的HttpURLConnection

 网​​址URL =新的URL（urlString）;
HttpURLConnection的连接=（HttpURLConnection类）url.openConnection（）;
connection.setRequestMethod（GET）;
connection.setDoInput（真正的）;
connection.connect（）;
 

I'm using android studio to create an app that makes a GET request to a server. My code is this:

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGetHC4;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;

public class HTTPHelper
{
    private String base;

    public HTTPHelper (String base)
    {
        this.base = base;
    }

    public String doGet (String path)
    {
        try
        {
            CloseableHttpClient client = HttpClientBuilder.create().build();
            HttpGetHC4 get = new HttpGetHC4(path);
            CloseableHttpResponse response = client.execute(get);

            return "";
        }
        catch (Exception e)
        {
            return null;
        }
    }
}

The proiblem is that Android Studio marks the line

client.execute(get);

with an error:

saying "Cannot access org.apache.http.client.HttpClient"

Here's my gradle file:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.0"

    defaultConfig {
        applicationId "principal.halloween"
        minSdkVersion 16
        targetSdkVersion 23
        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-v7:23.0.0'
    compile 'com.pubnub:pubnub-android:3.7.5'
    compile 'com.google.code.gson:gson:2.3.1'
    compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5.1'
    compile 'org.apache.httpcomponents:httpclient:4.3.6'

}

解决方案

In Android SDK 23

HttpClient is deprecated because it inference, you can migrate your code in HttpURLConnection

https://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-apache-http-client

You can use this, but it's not recommended anymore

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

For the HttpURLConnection

URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("GET");
connection.setDoInput(true);
connection.connect();

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