在编写云笔记时需要调用auth2.0协议，在调用是老出现javax.net.ssl.SSLPeerUnverifiedException: No peer certificate的错误，根据有关资料解决如下：
1、编写SSLSocketFactoryEx，以代替原有的SSLSocketFactory，代码如下：

package com.nbcio.baishicha.yunbiji;

import java.io.IOException;

import java.net.Socket;

import java.net.UnknownHostException;

import java.security.KeyManagementException;

import java.security.KeyStore;

import java.security.KeyStoreException;

import java.security.NoSuchAlgorithmException;

import java.security.UnrecoverableKeyException;

import javax.net.ssl.SSLContext;

import javax.net.ssl.TrustManager;

import javax.net.ssl.X509TrustManager;

import org.apache.http.conn.ssl.SSLSocketFactory;

public class SSLSocketFactoryEx extends SSLSocketFactory {

SSLContext sslContext = SSLContext.getInstance("TLS");

public SSLSocketFactoryEx(KeyStore truststore)

throws NoSuchAlgorithmException, KeyManagementException,

KeyStoreException, UnrecoverableKeyException {

super(truststore);

TrustManager tm = new X509TrustManager() {

public java.security.cert.X509Certificate[] getAcceptedIssuers() {

return null;

}

@Override

public void checkClientTrusted(

java.security.cert.X509Certificate[] chain, String authType)

throws java.security.cert.CertificateException {

}

@Override

public void checkServerTrusted(

java.security.cert.X509Certificate[] chain, String authType)

throws java.security.cert.CertificateException {

}

};

sslContext.init(null, new TrustManager[] { tm }, null);

}

@Override

public Socket createSocket(Socket socket, String host, int port,

boolean autoClose) throws IOException, UnknownHostException {

return sslContext.getSocketFactory().createSocket(socket, host, port,

autoClose);

}

@Override

public Socket createSocket() throws IOException {

return sslContext.getSocketFactory().createSocket();

}

}

2、编写新的HttpClient  getNewHttpClient来代替原有的DefaultHttpClient，代码如下：

public static HttpClient getNewHttpClient() {

try {

KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());

trustStore.load(null, null);

SSLSocketFactory sf = new SSLSocketFactoryEx(trustStore);

sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);

HttpParams params = new BasicHttpParams();

HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);

HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);

SchemeRegistry registry = new SchemeRegistry();

registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));

registry.register(new Scheme("https", sf, 443));

ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);

return new DefaultHttpClient(ccm, params);

} catch (Exception e) {

return new DefaultHttpClient();

}

}

3、在postRequest调用的时候如下方式就可以：

HttpResponse httpResponse =  (HttpResponse) getNewHttpClient().execute(postMethod);