我正在使用Retrofit来访问我的REST API.但是,当我把我的API放在ssl后面并通过http：// myhost / myapi访问它时,我收到此错误：

我的API落后于SSL,我是否需要做一些额外的事情？

这是我如何连接：

private final String API = "https://myhost/myapi";

private final RestAdapter REST_ADAPTER = new RestAdapter.Builder()
        .setServer(API)
        .setLogLevel(RestAdapter.LogLevel.FULL)
        .build();

01-10 09:49:55.621    2076-2100/com.myapp.mobile D/Retrofit﹕ javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
            at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:401)
            at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:209)
            at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:478)
            at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433)
            at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
            at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
            at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:282)
            at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:497)
            at libcore.net.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:134)
            at retrofit.client.UrlConnectionClient.readResponse(UrlConnectionClient.java:90)
            at retrofit.client.UrlConnectionClient.execute(UrlConnectionClient.java:48)
            at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:287)
            at retrofit.RestAdapter$RestHandler.invoke(RestAdapter.java:222)
            at $Proxy12.signin(Native Method)
            at com.myapp.loginactivity$3.doInBackground(LoginActivity.java:143)
            at com.myapp.loginactivity$3.doInBackground(LoginActivity.java:136)
            at android.os.AsyncTask$2.call(AsyncTask.java:287)
            at java.util.concurrent.FutureTask.run(FutureTask.java:234)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
            at java.lang.Thread.run(Thread.java:841)
     Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
            at org.apache.harmony.xnet.provider.jsse.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:282)
            at org.apache.harmony.xnet.provider.jsse.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:202)
            at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:595)
            at org.apache.harmony.xnet.provider.jsse.NativeCrypto.SSL_do_handshake(Native Method)
            at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:398)
            at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:209)
            at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:478)
            at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433)
            at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
            at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
            at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:282)
            at libcore.net.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:497)
            at libcore.net.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:134)
            at retrofit.client.UrlConnectionClient.readResponse(UrlConnectionClient.java:90)
            at retrofit.client.UrlConnectionClient.execute(UrlConnectionClient.java:48)
            at retrofit.RestAdapter$RestHandler.invokeRequest(RestAdapter.java:287)
            at retrofit.RestAdapter$RestHandler.invoke(RestAdapter.java:222)
            at $Proxy12.signin(Native Method)
            at com.myapp.LoginActivity$3.doInBackground(LoginActivity.java:143)
            at com.myapp.LoginActivity$3.doInBackground(LoginActivity.java:136)
            at android.os.AsyncTask$2.call(AsyncTask.java:287)
            at java.util.concurrent.FutureTask.run(FutureTask.java:234)
            at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
            at java.lang.Thread.run(Thread.java:841)

解决方法:

发生这种情况的原因是JVM / Dalvik对系统或用户证书存储中的CA证书没有信心.

要使用Retrofit修复此问题,如果使用okhttp,则使用其他客户端非常相似.
你要这样做：

一种).创建包含CA的公钥的证书库.为此,您需要为* nix启动下一个脚本.
你需要在你的机器上安装openssl,并从https://www.bouncycastle.org/下载jar bcprov-jdk16-1.46.jar.不下载此版本
另外,1.5x版本与android 4.0.4不兼容.

#!/bin/bash

if [ -z $1 ]; then
  echo "Usage: cert2Android<CA cert PEM file>"
  exit 1
fi

CACERT=$1
BCJAR=bcprov-jdk16-1.46.jar

TRUSTSTORE=mytruststore.bks
ALIAS=`openssl x509 -inform PEM -subject_hash -noout -in $CACERT`

if [ -f $TRUSTSTORE ]; then
    rm $TRUSTSTORE || exit 1
fi

echo "Adding certificate to $TRUSTSTORE..."
keytool -import -v -trustcacerts -alias $ALIAS \
      -file $CACERT \
      -keystore $TRUSTSTORE -storetype BKS \
      -providerclass org.bouncycastle.jce.provider.BouncyCastleProvider \
      -providerpath $BCJAR \
      -storepass secret

echo "" 
echo "Added '$CACERT' with alias '$ALIAS' to $TRUSTSTORE..."

B).将文件truststore mytruststore.bks复制到项目的res / raw中

C).设置连接的SSLContext：

.............
okHttpClient = new OkHttpClient();
try {
    KeyStore ksTrust = KeyStore.getInstance("BKS");
    InputStream instream = context.getResources().openRawResource(R.raw.mytruststore);
    ksTrust.load(instream, "secret".toCharArray());

    // TrustManager decides which certificate authorities to use.
    TrustManagerFactory tmf = TrustManagerFactory
        .getInstance(TrustManagerFactory.getDefaultAlgorithm());
    tmf.init(ksTrust);
    SSLContext sslContext = SSLContext.getInstance("TLS");
    sslContext.init(null, tmf.getTrustManagers(), null);

    okHttpClient.setSslSocketFactory(sslContext.getSocketFactory());
} catch (KeyStoreException | IOException | NoSuchAlgorithmException | CertificateException | KeyManagementException e) {
    e.printStackTrace();
}
.................