SSLContext sc = SSLContext.getInstance("SSL");请修改这段代码,使用更强的协议。
时间: 2024-03-30 15:37:06 浏览: 11
可以将协议更改为TLSv1.2,代码如下:
```
SSLContext sc = SSLContext.getInstance("TLSv1.2");
```
这将使用TLSv1.2协议来进行SSL连接,比SSL协议更为安全。请注意,这可能会导致与某些旧的SSL服务器的兼容性问题,因此请确保您的服务器支持TLSv1.2协议。
相关问题
private static byte[] httpsConverBytes(String fileUrl) { BufferedInputStream inStream = null; ByteArrayOutputStream outStream = null; try { TrustManager[] tm = {new TrustAnyTrustManager()}; SSLContext sc = SSLContext.getInstance("SSL", "SunJSSE"); sc.init(null, tm, new java.security.SecureRandom()); URL console = new URL(fileUrl); HttpsURLConnection conn = (HttpsURLConnection) console.openConnection(); conn.setSSLSocketFactory(sc.getSocketFactory()); conn.setHostnameVerifier(new TrustAnyHostnameVerifier()); conn.setDoOutput(true); conn.setDoInput(true); conn.setRequestMethod("GET"); conn.connect(); inStream = new BufferedInputStream(conn.getInputStream()); outStream = new ByteArrayOutputStream(); byte[] buffer = new byte[1024]; int len = 0; while ((len = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, len); } byte[] content = outStream.toByteArray(); return content; } catch (Exception e) { e.printStackTrace(); } finally { if (null != inStream) { try { inStream.close(); } catch (IOException e) { e.printStackTrace(); } } if (null != outStream) { try { outStream.close(); } catch (IOException e) { e.printStackTrace(); } } } return null; } 代码优化
这段代码可以进行一些优化,例如使用try-with-resources语句来自动关闭流,以及使用更现代的API来简化操作。下面是优化后的代码示例:
private static byte[] httpsConverBytes(String fileUrl) {
try {
TrustManager[] tm = {new TrustAnyTrustManager()};
SSLContext sc = SSLContext.getInstance("SSL", "SunJSSE");
sc.init(null, tm, new java.security.SecureRandom());
URL console = new URL(fileUrl);
HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
conn.setSSLSocketFactory(sc.getSocketFactory());
conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod("GET");
conn.connect();
try (BufferedInputStream inStream = new BufferedInputStream(conn.getInputStream());
ByteArrayOutputStream outStream = new ByteArrayOutputStream()) {
byte[] buffer = new byte[1024];
int len;
while ((len = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
return outStream.toByteArray();
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
通过使用try-with-resources语句,可以自动关闭输入流和输出流,无需手动处理异常。此外,去掉了不必要的null检查和关闭流的逻辑判断。
public class SslUtils { private static void trustAllHttpsCertificates() throws Exception { TrustManager[] trustAllCerts = new TrustManager[1]; TrustManager tm = new miTM(); trustAllCerts[0] = tm; SSLContext sc = SSLContext.getInstance("SSL"); sc.init(null, trustAllCerts, null); HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); } static class miTM implements TrustManager,X509TrustManager { @Override public X509Certificate[] getAcceptedIssuers() { return null; } public boolean isServerTrusted(X509Certificate[] certs) { return true; } public boolean isClientTrusted(X509Certificate[] certs) { return true; } @Override public void checkServerTrusted(X509Certificate[] certs, String authType) { return; } @Override public void checkClientTrusted(X509Certificate[] certs, String authType) { return; } } /** * 忽略HTTPS请求的SSL证书,必须在openConnection之前调用 * @throws Exception */ public static void ignoreSsl() throws Exception{ HostnameVerifier hv = (urlHostName, session) -> { System.out.println("Warning: URL Host: " + urlHostName + " vs. " + session.getPeerHost()); return true; }; trustAllHttpsCertificates(); HttpsURLConnection.setDefaultHostnameVerifier(hv); } }解释一下这段代码
这是一个Java类,名为SslUtils。其中包含了一个静态方法ignoreSsl(),该方法用于忽略HTTPS请求的SSL证书,在使用openConnection()方法建立HTTPS连接之前调用。该方法实现了一个自定义的HostnameVerifier,并调用了trustAllHttpsCertificates()方法,该方法会初始化一个SSLContext并将一个自定义的TrustManager添加到其中,从而实现了信任所有HTTPS证书的效果。miTM类是一个实现了TrustManager和X509TrustManager接口的内部类,用于管理证书信任。具体而言,该类实现的方法isServerTrusted()和isClientTrusted()返回true,表示信任所有服务器或客户端证书;而getAcceptedIssuers()、checkServerTrusted()和checkClientTrusted()方法则返回空或什么都不做,表示不做任何证书验证。