android webview https ssl
时间: 2023-10-29 22:03:11 浏览: 212
Android提供了WebView控件来加载和显示Web页面。在使用WebView加载HTTPS网页时,SSL(即Secure Sockets Layer)是必需的。
SSL是一种用于在Internet上保护数据传输安全的加密协议。它确保在浏览器和服务器之间传输的数据是加密的,以防止第三方篡改或窃听数据。
要在Android WebView中使用SSL,需要采取以下步骤:
1. 配置WebView设置:在代码中,我们可以通过设置WebView的WebSettings对象来启用JavaScript和SSL,以便加载HTTPS网页。可以使用以下代码进行设置:
```
WebView webView = findViewById(R.id.webview);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setAppCacheEnabled(true);
webSettings.setCacheMode(WebSettings.LOAD_DEFAULT);
```
2. 导入SSL证书:有时候,我们需要导入服务器的SSL证书,以便WebView可以信任该服务器。可以使用以下代码导入SSL证书:
```
InputStream inputStream = getAssets().open("ssl_cert.cer");
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
X509Certificate x509Certificate = (X509Certificate) certificateFactory.generateCertificate(inputStream);
inputStream.close();
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
keyStore.load(null, null);
keyStore.setCertificateEntry("ssl_cert", x509Certificate);
String defaultAlgorithm = KeyManagerFactory.getDefaultAlgorithm();
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(defaultAlgorithm);
keyManagerFactory.init(keyStore, null);
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(defaultAlgorithm);
trustManagerFactory.init(keyStore);
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, trustManagerFactory.getTrustManagers(), null);
SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
webSettings.setUseWideViewPort(true);
webSettings.setBuiltInZoomControls(true);
webSettings.setDisplayZoomControls(false);
webSettings.setSupportZoom(true);
webSettings.setAllowFileAccess(true);
webSettings.setAllowContentAccess(true);
webView.setWebViewClient(new WebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("https://www.example.com");
```
通过以上步骤,我们就可以在Android WebView中加载HTTPS安全网页并保持通信的安全性。
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