楼主公司需要调用gis服务器，但是服务器提供的https请求，同时公司也没有证书，这样会照成访问后不能直接调到接口，需要手动添加证书。所以用一下方式调用https接口可以避免上述情况。
java直接访问https请求，直接复制粘贴即可。
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.URL; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import javax.net.ssl.*; public class MyX509TrustManager implements X509TrustManager { @Override public void checkClientTrusted(X509Certificate certificates[], String authType) throws CertificateException { } @Override public void checkServerTrusted(X509Certificate[] ax509certificate, String s) throws CertificateException { } @Override public X509Certificate[] getAcceptedIssuers() { return null; } public static void main(String[] args) throws Exception { SSLContext sslcontext = SSLContext.getInstance("SSL", "SunJSSE"); sslcontext.init(null, new TrustManager[]{new MyX509TrustManager()}, new java.security.SecureRandom()); URL serverUrl = new URL("地址"); HostnameVerifier ignoreHostnameVerifier = new HostnameVerifier() { @Override public boolean verify(String s, SSLSession sslsession) { //核心在这里，表示通过安全认证 return true; } }; //拼接请求 HttpsURLConnection.setDefaultHostnameVerifier(ignoreHostnameVerifier); HttpsURLConnection.setDefaultSSLSocketFactory(sslcontext.getSocketFactory()); HttpsURLConnection conn = (HttpsURLConnection) serverUrl.openConnection(); conn.setRequestMethod("GET"); conn.setRequestProperty("Content-type", "application/json"); //必须设置false，否则会自动redirect到重定向后的地址 conn.setInstanceFollowRedirects(false); conn.connect(); String result = getReturn(conn); System.out.println(result); } //请求url获取返回的内容 public static String getReturn(HttpsURLConnection connection) throws IOException { StringBuffer buffer = new StringBuffer(); try (InputStream inputStream = connection.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream); BufferedReader bufferedReader = new BufferedReader(inputStreamReader);) { String str = null; while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } String result = buffer.toString(); return result; } } }
