在请求阿里云的api接口的时候，出现了
javax.net.ssl.SSLPeerUnverifiedException: peer not authenticated 
这个错误信息，demo代码是官方的，仔细一看，是https请求证书问题，后来找到解决办法。代码如下：

package com.aliyun.api.gateway.demo.util;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
public class WebClientDevWrapper {
    public static HttpClient wrapClient(HttpClient base) {
        try {
            SSLContext ctx = SSLContext.getInstance("TLS");
            X509TrustManager tm = new X509TrustManager() {
                public X509Certificate getAcceptedIssuers() {
                    return null;
                }
                public void checkClientTrusted(X509Certificate arg0, String arg1) throws CertificateException {}
                public void checkServerTrusted(X509Certificate arg0, String arg1) throws CertificateException {}
            };
            ctx.init(null, new TrustManager { tm }, null);
            SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
            ClientConnectionManager ccm=base.getConnectionManager();
            SchemeRegistry registry = ccm.getSchemeRegistry();
            registry.register(new Scheme("https", 443, ssf));
            return new DefaultHttpClient(ccm, base.getParams());
           /* SchemeRegistry registry = new SchemeRegistry();
            registry.register(new Scheme("https", 443, ssf));

其中调用的代码如下： 

HttpClient httpClient = new DefaultHttpClient();
httpClient=WebClientDevWrapper.wrapClient(httpClient);

完美解决！！！