从android发送post请求

Question

我已经挣扎了好几个小时了。我一直在尝试从我的android应用程序发出post请求。我发现我不能仅仅从主线程发出请求，所以我发现我可以把它放在一个可运行的线程中。我四处寻找答案，尝试了很多人们使用的方法，这些方法对其他人有效，但对我来说没有一个有效。我有点理解的是这个(对我不起作用)：

package com.example.matt.event;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
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;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;


public class lokacije extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.lokacije);
    thread.start();
}

Thread thread = new Thread(new Runnable(){
    @Override
    public void run()
    {
            HttpClient httpClient = new DefaultHttpClient();
            // replace with your url
            HttpPost httpPost = new HttpPost("http://www.awesomeholidays.com/login.php");


            //Post Data
            List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
            nameValuePair.add(new BasicNameValuePair("username", "123"));
            nameValuePair.add(new BasicNameValuePair("password", "456"));


            //Encoding POST data
            try {
                httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
            } catch (UnsupportedEncodingException e) {
                Log.d("omg it doesn't work",e.toString());
                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();

            }
    }
});
}

我允许它访问互联网，所以：

  <uses-permission android:name="android.permission.INTERNET"/>

服务器端脚本api可以工作，因为我只是在web应用程序中使用它。

谁能给我指个方向？我一无所知。错误可能出在哪里？(我必须从apache.com下载http库并将其包含在我的gradle中-必须添加一个依赖项编译‘org.apache.http组件:httpclient:4.5’和一堆packagingOptions {

    exclude 'META-INF/DEPENDENCIES'

    exclude 'META-INF/NOTICE'

    exclude 'META-INF/LICENSE'

    exclude 'META-INF/LICENSE.txt'

    exclude 'META-INF/NOTICE.txt'

})有没有简单的方法？我也发现了okhttp库，我将尝试实现它，但我真的不太擅长gradle和导入外部库。

这是我得到的：

 11-28 20:49:49.587 10450-10450/? D/dalvikvm: Late-enabling CheckJNI
 11-28 20:49:50.008 10450-10450/com.example.matic.eventer W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
 11-28 20:49:50.008 10450-10450/com.example.matic.eventer I/dalvikvm: Could not find method android.view.Window$Callback.onSearchRequested, referenced from method android.support.v7.internal.view.WindowCallbackWrapper.onSearchRequested
 11-28 20:49:50.008 10450-10450/com.example.matic.eventer W/dalvikvm: VFY: unable to resolve interface method 14051: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
 11-28 20:49:50.008 10450-10450/com.example.matic.eventer D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
 11-28 20:49:50.018 10450-10450/com.example.matic.eventer I/dalvikvm: Could not find method android.view.Window$Callback.onWindowStartingActionMode, referenced from method android.support.v7.internal.view.WindowCallbackWrapper.onWindowStartingActionMode
 11-28 20:49:50.018 10450-10450/com.example.matic.eventer W/dalvikvm: VFY: unable to resolve interface method 14055: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
 11-28 20:49:50.018 10450-10450/com.example.matic.eventer D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
 11-28 20:49:50.238 10450-10450/com.example.matic.eventer I/dalvikvm: Could not find method android.view.ViewGroup.onRtlPropertiesChanged, referenced from method android.support.v7.widget.Toolbar.onRtlPropertiesChanged
 11-28 20:49:50.248 10450-10450/com.example.matic.eventer W/dalvikvm: VFY: unable to resolve virtual method 13952: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V
 11-28 20:49:50.248 10450-10450/com.example.matic.eventer D/dalvikvm: VFY: replacing opcode 0x6f at 0x0007
 11-28 20:49:50.268 10450-10450/com.example.matic.eventer I/dalvikvm: Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
 11-28 20:49:50.268 10450-10450/com.example.matic.eventer W/dalvikvm: VFY: unable to resolve virtual method 402: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
 11-28 20:49:50.268 10450-10450/com.example.matic.eventer D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
 11-28 20:49:50.278 10450-10450/com.example.matic.eventer I/dalvikvm: Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
 11-28 20:49:50.278 10450-10450/com.example.matic.eventer W/dalvikvm: VFY: unable to resolve virtual method 424: Landroid/content/res/TypedArray;.getType (I)I
 11-28 20:49:50.278 10450-10450/com.example.matic.eventer D/dalvikvm: VFY:replacing opcode 0x6e at 0x0002
 11-28 20:49:50.438 10450-10450/com.example.matic.eventer D/libEGL: loaded /system/lib/egl/libEGL_mali.so
 11-28 20:49:50.458 10450-10450/com.example.matic.eventer D/libEGL:  loaded /system/lib/egl/libGLESv1_CM_mali.so
 11-28 20:49:50.458 10450-10450/com.example.matic.eventer D/libEGL: loaded /system/lib/egl/libGLESv2_mali.so
 11-28 20:49:50.498 10450-10454/com.example.matic.eventer D/dalvikvm: GC_CONCURRENT freed 198K, 9% free 9534K/10375K, paused 3ms+32ms, total 128ms
 11-28 20:49:50.518 10450-10450/com.example.matic.eventer D/OpenGLRenderer: Enabling debug mode 0
 11-28 20:49:54.722 10450-10450/com.example.matic.eventer E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
 11-28 20:49:54.722 10450-10450/com.example.matic.eventer E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
 11-28 20:49:56.514 10450-10583/com.example.matic.eventer D/Http Post Response:: org.apache.http.message.BasicHttpResponse@417e0af0

请帮帮忙。:)所有的帮助我都非常感谢。

Answer 1

我不确定你的错误。

但是对于你的问题：

有什么简单的方法吗？我还找到了okhttp库

。

Comparison of Android Networking Libraries: OkHTTP, Retrofit, Volley是一个漂亮的帖子，它从各个方面比较了所有可用的网络库。永远不要想着自己框架头、正文和解析响应。此外，重试、取消正在进行的请求、缓存等都可以通过库轻松完成。而Retrofit在每个因素上都是最好的。我们正在使用它，它很好。它支持JSON、XML、Jackson、Moshi、Protobuf和Wire数据格式。您需要做的就是创建请求正文模型类和响应模型。看看Retrofit beginner doc吧。

Answer 2

好的。首先，感谢大家的回答。:)很有帮助。我刚刚将okhttp库导入到项目中，从现在开始我将使用它。看起来很简单。再次感谢。

愿代码与你们所有人同在！

诚心诚意，马季奇