Create 2024-03-15-java-https-check.md

_posts/2024-03-15-java-https-check.md

@@ -0,0 +1,24 @@
+---
+tags:
+  - http
+  - java
+  - security
+  - tls
+title: Check HTTP(S) Connectivity in Java
+---
+Trivial Java code to try an HTTP connection to a URL. In particular, this can be useful to see whether your Java environment and its SSL/TLS configuration will successfully connect to an https URL.
+
+### Java class
+
+See [TestHttp](https://github.com/dougbreaux/Java-Web-Tools/blob/master/src/main/java/TestHttp.java).
+
+Run it like:
+```console
+java -Djavax.net.ssl.trustStore=/config/trust.jks -Djavax.net.ssl.keyStorePassword=$TRUST_PASSWORD TestHttp https://example.com
+```
+
+### JSP
+
+JSP you can deploy or create in your Java server environment:
+
+See [HttpTest.jsp](https://github.com/dougbreaux/Java-Web-Tools/blob/master/WebContent/HttpTest.jsp)