From be5469660392ba191e5c4026987d33c8cf43375d Mon Sep 17 00:00:00 2001
From: Justin Richer <jricher@mitre.org>
Date: Tue, 28 Aug 2012 12:29:10 -0400
Subject: [PATCH] Generic GSON entity printer

---
 .../openid/connect/view/JsonEntityView.java   | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 openid-connect-server/src/main/java/org/mitre/openid/connect/view/JsonEntityView.java

diff --git a/openid-connect-server/src/main/java/org/mitre/openid/connect/view/JsonEntityView.java b/openid-connect-server/src/main/java/org/mitre/openid/connect/view/JsonEntityView.java
new file mode 100644
index 000000000..d1aed0992
--- /dev/null
+++ b/openid-connect-server/src/main/java/org/mitre/openid/connect/view/JsonEntityView.java
@@ -0,0 +1,69 @@
+/**
+ * 
+ */
+package org.mitre.openid.connect.view;
+
+import java.io.IOException;
+import java.io.Writer;
+import java.util.Map;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.validation.BeanPropertyBindingResult;
+import org.springframework.web.servlet.view.AbstractView;
+
+import com.google.gson.ExclusionStrategy;
+import com.google.gson.FieldAttributes;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+/**
+ * @author jricher
+ *
+ */
+@Component("jsonEntityView")
+public class JsonEntityView extends AbstractView {
+
+	private static Logger logger = LoggerFactory.getLogger(JsonEntityView.class);
+
+    protected void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) {
+
+        Gson gson = new GsonBuilder()
+                .setExclusionStrategies(new ExclusionStrategy() {
+
+                    public boolean shouldSkipField(FieldAttributes f) {
+
+                        return false;
+                    }
+
+                    public boolean shouldSkipClass(Class<?> clazz) {
+                        // skip the JPA binding wrapper
+                        if (clazz.equals(BeanPropertyBindingResult.class)) {
+                            return true;
+                        }
+                        return false;
+                    }
+
+                }).create();
+
+        response.setContentType("application/json");
+
+        
+		try {
+			
+			Writer out = response.getWriter();
+			Object obj = model.get("entity");
+	        gson.toJson(obj, out);
+	        
+		} catch (IOException e) {
+			
+			logger.error("IOException in JsonEntityView.java: " + e.getStackTrace());
+			
+		}
+    }
+
+}