先写最基础的，你才能学框架联网等，
public class HttpUtils {
public interface HttpListener {
void onSuccess(String content);
void onFail(Exception ex);
}
private static Handler mUIHandler = new Handler(Looper.getMainLooper());
public static void doGet(final Context context, final String urlStr, final HttpListener listener) {
new Thread() {
@Override
public void run() {
InputStream is = null;
try {
URL url = new URL(urlStr);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
SSLContext sslContext = SSLContext.getInstance("TLS");//协议
X509Certificate serverCert = getCert(context);
TrustManager[] trustManagers = {new MyX509TrustManager(serverCert)};
sslContext.init(null, trustManagers, new SecureRandom());//三种,第二个是数组我们要信任那些证书
conn.setSSLSocketFactory(sslContext.getSocketFactory());
//对域名的效验
conn.setHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
HostnameVerifier defaultHostnameVerifier
= HttpsURLConnection.getDefaultHostnameVerifier();
return defaultHostnameVerifier.verify("kyfw.12306.cn", session);
}
});
//以上是htpps需要的
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("GET");
conn.setReadTimeout(5000);
conn.setConnectTimeout(5000);
conn.connect();
is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is);//char对应是Reader如果用byte用Stream就行
char[] buf = new char[2048];
int len = -1;
final StringBuilder content = new StringBuilder();
while ((len = isr.read(buf)) != -1) {
content.append(new String(buf, 0, len));
}
mUIHandler.post(new Runnable() {
@Override
public void run() {
listener.onSuccess(content.toString());
}
});
} catch (Exception e) {
e.printStackTrace();
listener.onFail(e);
} finally {
try {
if (is != null) {
is.close();
}
} catch (IOException e) {
// ignore
}
}
}
}.start();
}
/**
* 获取证书判断证书
* @param context
* @return
*/
private static X509Certificate getCert(Context context) {
try {
InputStream is = context.getAssets().open("srca.cer");
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");//创建证书
return (X509Certificate) certificateFactory.generateCertificate(is);
} catch (IOException e) {
e.printStackTrace();
} catch (CertificateException e) {
e.printStackTrace();
}
return null;
}
}
/**
* 检查证书
*/
public class MyX509TrustManager implements X509TrustManager {
private X509Certificate mServerCert;//证书
public MyX509TrustManager(X509Certificate certificate) {
mServerCert = certificate;
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
//判断证书合法性
for (X509Certificate certificate : chain) {
// 证书是否过期以及合法性的校验
certificate.checkValidity();
try {
certificate.verify(mServerCert.getPublicKey());//传入公钥
} catch (Exception e) {
throw new CertificateException(e);
}
}
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
}有这个你就可以了，下面第二方法
public class HttpUtils2 {
public interface HttpListener {
void onSuccess(String content);
void onFail(Exception ex);
}
private static Handler mUIHandler = new Handler(Looper.getMainLooper());
public static void doGet(final Context context, final String urlStr, final HttpListener listener) {
new Thread() {
@Override
public void run() {
InputStream is = null;
try {
URL url = new URL(urlStr);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
X509Certificate serverCert = getCert(context);
//
String keyStoreType = KeyStore.getDefaultType();
KeyStore keyStore = KeyStore.getInstance(keyStoreType);
keyStore.load(null);
keyStore.setCertificateEntry("srca",serverCert);
TrustManagerFactory trustManagerFactory =
TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init(keyStore);
//
SSLContext sslContext = SSLContext.getInstance("TLS");
TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
sslContext.init(null, trustManagers, new SecureRandom());
conn.setSSLSocketFactory(sslContext.getSocketFactory());
conn.setHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
HostnameVerifier defaultHostnameVerifier
= HttpsURLConnection.getDefaultHostnameVerifier();
return defaultHostnameVerifier.verify("kyfw.12306.cn", session);
}
});
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("GET");
conn.setReadTimeout(5000);
conn.setConnectTimeout(5000);
conn.connect();
is = conn.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
char[] buf = new char[2048];
int len = -1;
final StringBuilder content = new StringBuilder();
while ((len = isr.read(buf)) != -1) {
content.append(new String(buf, 0, len));
}
mUIHandler.post(new Runnable() {
@Override
public void run() {
listener.onSuccess(content.toString());
}
});
} catch (Exception e) {
e.printStackTrace();
listener.onFail(e);
} finally {
try {
if (is != null) {
is.close();
}
} catch (IOException e) {
// ignore
}
}
}
}.start();
}
private static X509Certificate getCert(Context context) {
try {
InputStream is = context.getAssets().open("srca.cer");
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
return (X509Certificate) certificateFactory.generateCertificate(is);
} catch (IOException e) {
e.printStackTrace();
} catch (CertificateException e) {
e.printStackTrace();
}
return null;
}
}这就是最基础的东西了
随时随地看视频
