在本文中,我们将详细介绍android的volley学习的各个方面,并为您提供关于androidvolatile的相关解答,同时,我们也将为您带来关于AndroidKotlin-VolleyMulti
在本文中,我们将详细介绍android的volley学习的各个方面,并为您提供关于android volatile的相关解答,同时,我们也将为您带来关于Android Kotlin - Volley Multipart 请求 VolleyFileUploadRequest JSONObject 响应、android Volley、android volley https、android Volley Post 请求失败的有用知识。
本文目录一览:- android的volley学习(android volatile)
- Android Kotlin - Volley Multipart 请求 VolleyFileUploadRequest JSONObject 响应
- android Volley
- android volley https
- android Volley Post 请求失败
android的volley学习(android volatile)
更简单的一种方式是在build.gradle中引入依赖【推荐这种方式】
compile 'com.android.volley:volley:1.1.1'
StringRequest的用法
接下来我们看看如何发起一条HTTP请求,然后接收HTTP响应。首先需要获取到一个RequestQueue对象,可以调用如下方法获取到:
RequestQueue mQueue = Volley.newRequestQueue(context);首先创建一个StringRequest实例,构造函数中三个参数分别为:http请求方式:Get/Post,请求url,请求成功监听器(Response.Listener),请求错误监听器(Response.ErrorListener)。然后将request对象设置好Tag标记(方便以后针对性的取消请求),将request放入请求队列中
注意这里拿到的RequestQueue是一个请求队列对象,它可以缓存所有的HTTP请求,然后按照一定的算法并发地发出这些请求。RequestQueue内部的设计就是非常合适高并发的,因此我们不必为每一次HTTP请求都创建一个RequestQueue对象,这是非常浪费资源的,基本上在每一个需要和网络交互的Activity中创建一个RequestQueue对象就足够了
接下来为了要发出一条HTTP请求,我们还需要创建一个StringRequest对象,如下所示:
StringRequest stringRequest = new StringRequest("https://www.baidu.com", new Response.Listener<String>() { @Override public void onResponse(String response) { Log.d("TAG", response); } }, new Response.ErrorListener() { @Override public void one rrorResponse(VolleyError error) { Log.e("TAG", error.getMessage(), error); } });
可以看到,这里new出了一个StringRequest对象,StringRequest的构造函数需要传入三个参数,第一个参数就是目标服务器的URL地址,第二个参数是服务器响应成功的回调,第三个参数是服务器响应失败的回调。其中,目标服务器地址我们填写的是百度的首页,然后在响应成功的回调里打印出服务器返回的内容,在响应失败的回调里打印出失败的详细信息。
最后,将这个StringRequest对象添加到RequestQueue里面就可以了,如下所示:
mQueue.add(stringRequest);
AndroidManifest.xml中添加如下权限:
<uses-permission android:name="android.permission.INTERNET" />
原文链接:https://blog.csdn.net/u010356768/article/details/87720280
首先创建一个StringRequest实例,构造函数中三个参数分别为:http请求方式:Get/Post,请求url,请求成功监听器(Response.Listener),请求错误监听器(Response.ErrorListener)。然后将request对象设置好Tag标记(方便以后针对性的取消请求),将request放入请求队列中。
Get请求方式:
Android Kotlin - Volley Multipart 请求 VolleyFileUploadRequest JSONObject 响应
这是怎么做的:
val response = JSONObject(String(it.data))
android Volley
现在让我选择我会选retrofit2.0:https://github.com/AnyLifeZLB/Retrofit2.0_Demo
http://www.cnblogs.com/angeldevil/p/3735051.html
http://www.codekk.com/blogs/detail/54cfab086c4761e5001b2542
https://bxbxbai.github.io/2014/09/14/android-working-with-volley/
下面是序列教程的第一篇:
http://blog.csdn.net/guolin_blog/article/details/17482095
android volley https
Android中使用volley进行Https 通讯的时候,如果没有申请正式会报错:( 我们的服务器用nginx作为容器 )
VolleyEror: com.android.volley.NoConnectionError: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
最好的办法是按照规则来办事:加证书。然而调试服务器说不加...
那么要怎么才不会报错呢?
1.查看接口 X509TrustManger.java ( 在包javax.net.ssl )
X509TrustManager.Java
//------------------------------------
package javax.net.ssl;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
/**
* The trust manager for X509 certificates to be used to perform authentication
* for secure sockets.
*/
public interface X509TrustManager extends TrustManager {
/**
* Checks whether the specified certificate chain (partial or complete) can
* be validated and is trusted for client authentication for the specified
* authentication type.
*
* @param chain
* the certificate chain to validate.
* @param authType
* the authentication type used.
* @throws CertificateException
* if the certificate chain can''t be validated or isn''t trusted.
* @throws IllegalArgumentException
* if the specified certificate chain is empty or {@code null},
* or if the specified authentication type is {@code null} or an
* empty string.
*/
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException;
/**
* Checks whether the specified certificate chain (partial or complete) can
* be validated and is trusted for server authentication for the specified
* key exchange algorithm.
*
* @param chain
* the certificate chain to validate.
* @param authType
* the key exchange algorithm name.
* @throws CertificateException
* if the certificate chain can''t be validated or isn''t trusted.
* @throws IllegalArgumentException
* if the specified certificate chain is empty or {@code null},
* or if the specified authentication type is {@code null} or an
* empty string.
*/
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException;
/**
* Returns the list of certificate issuer authorities which are trusted for
* authentication of peers.
*
* @return the list of certificate issuer authorities which are trusted for
* authentication of peers.
*/
public X509Certificate[] getAcceptedIssuers();
}
//-------------------------------------------------------------------------------
2.FakeX509TrustManger implements X509TrustManager
package com.http.utils;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
/**
*
*
* Created by Administrator on 2016/2/17.
*/
public class FakeX509TrustManager implements X509TrustManager {
private static TrustManager[] trustManagers;
private static final X509Certificate[] _AcceptedIssuers = new
X509Certificate[] {};
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {
//To change body of implemented methods use File | Settings | File Templates.
}
@Override
public void checkServerTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {
//To change body of implemented methods use File | Settings | File Templates.
}
public boolean isClientTrusted(X509Certificate[] chain) {
return true;
}
public boolean isServerTrusted(X509Certificate[] chain) {
return true;
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return _AcceptedIssuers;
}
public static void allowAllSSL() {
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
// TODO Auto-generated method stub
return true;
}
});
SSLContext context = null;
if (trustManagers == null) {
trustManagers = new TrustManager[] { new FakeX509TrustManager() };
}
try {
context = SSLContext.getInstance("TLS");
context.init(null, trustManagers, new SecureRandom());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());
}
}
3.在请求前设置忽略所有的验证,允许所有的SSL
FakeX509TrustManager.allowAllSSL(); //it is dangerous!但是有的时候我们需要这样做!!
//========================StringRequest=====================================================
StringRequest httpRequest = new StringRequest(requestMethod, url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
参考链接:http://www.trinea.cn/android/android-java-https-ssl-exception-2/
android Volley Post 请求失败
JSONObject ClientKey = null;
listMsg = getSmsInfo(listPhone);
Toast.makeText(
getActivity(),
"listMsg.size()...................................................."
+ listMsg.size(), Toast.LENGTH_SHORT).show();
RequestQueue requestQueue = Volley.newRequestQueue(getActivity()
.getApplicationContext());
try {
for (int i = 0; i < 1; i++) {
/* 封装子对象 */
ClientKey = new JSONObject();
ClientKey.put("sms__id", listMsg.get(i).getSms__id());
ClientKey.put("sms_thread_id", listMsg.get(i)
.getSms_thread_id());
ClientKey.put("sms_body", listMsg.get(i).getSms_body());
ClientKey.put("sms_address", listMsg.get(i)
.getSms_address());
ClientKey.put("sms_person", listMsg.get(i).getSms_person());
ClientKey.put("sms_body", listMsg.get(i).getSms_body());
ClientKey.put("sms_status", listMsg.get(i).getSms_status());
ClientKey.put("sms_date", listMsg.get(i).getSms_date());
ClientKey.put("sms_type", listMsg.get(i).getSms_type());
ClientKey.put("sms_protocol", listMsg.get(i)
.getSms_protocol());
ClientKey.put("sms_read", listMsg.get(i).getSms_read());
ClientKey.put("sms_service_center", listMsg.get(i)
.getSms_service_center());
jsonRequest = new JsonObjectRequest(Method.POST,
AllFinalInfo.SERVER_URL, ClientKey,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Toast.makeText(
getActivity(),
"response.toString().....................................",
Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
error.printStackTrace();
Toast.makeText(
getActivity(),
"error.getMessage().....................................",
Toast.LENGTH_SHORT).show();
error.printStackTrace();
}
});
requestQueue.add(jsonRequest);
}
} catch (Exception e) {
}
路径和数据都正确,但是每次都执行new Response.ErrorListener() {}这个方法,不知道为什么?????
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