Replace Class.forName with Module Check and Direct Load (#675)

* Replace Class.forName with moduleCheck and direct load

* Update DHttpClientBuilder.java

* optimize

* Update DHttpClientBuilder.java

Author: SentryMan

http-client/src/main/java/io/avaje/http/client/DHttpClientBuilder.java

@@ -144,29 +144,30 @@ private static ExecutorService virtualThreadExecutor() {
    * Create a reasonable default BodyAdapter if avaje-jsonb or Jackson are present.
    */
   private BodyAdapter defaultBodyAdapter() {
-    if (detectJsonb()) {
-      bodyAdapter = new JsonbBodyAdapter();
-    } else if (detectJackson()) {
-      bodyAdapter = new JacksonBodyAdapter();
-    }
-    return bodyAdapter;
-  }
-
-  private boolean detectJsonb() {
-    return detectTypeExists("io.avaje.jsonb.Jsonb");
-  }
-
-  private boolean detectJackson() {
-    return detectTypeExists("com.fasterxml.jackson.databind.ObjectMapper");
-  }
-
-  private boolean detectTypeExists(String className) {
-    try {
-      Class.forName(className);
-      return true;
-    } catch (ClassNotFoundException | IllegalAccessError e) {
-      return false;
-    }
+    ModuleLayer bootLayer = ModuleLayer.boot();
+    return bootLayer
+      .findModule("io.avaje.http.client")
+      .map(m -> {
+        if (bootLayer.findModule("io.avaje.jsonb").isPresent()) {
+          return new JsonbBodyAdapter();
+        }
+        if (bootLayer.findModule("com.fasterxml.jackson.databind").isPresent()) {
+          return new JacksonBodyAdapter();
+        }
+        return bodyAdapter;
+      })
+      .orElseGet(() -> {
+        try {
+          return new JsonbBodyAdapter();
+        } catch (NoClassDefFoundError e) {
+          // I guess it don't exist
+        }
+        try {
+          return new JacksonBodyAdapter();
+        } catch (NoClassDefFoundError e) {
+          return bodyAdapter;
+        }
+      });
   }
 
   private DHttpClientContext buildClient() {

pom.xml

@@ -23,7 +23,7 @@
     <swagger.version>2.2.41</swagger.version>
     <jackson.version>2.14.2</jackson.version>
     <jex.version>3.0-RC10</jex.version>
-    <avaje.prisms.version>1.43</avaje.prisms.version>
+    <avaje.prisms.version>1.44-RC4</avaje.prisms.version>
     <project.build.outputTimestamp>2025-11-17T18:50:39Z</project.build.outputTimestamp>
     <module-info.shade>${project.build.directory}${file.separator}module-info.shade</module-info.shade>
   </properties>