demo datetime support

taowen · taowen · commit 61a8c1838e02 · 2017-01-03T20:22:04.000+08:00
diff --git a/src/main/java/com/jsoniter/datetime/JdkDatetimeSupport.java b/src/main/java/com/jsoniter/datetime/JdkDatetimeSupport.java
@@ -0,0 +1,53 @@
+package com.jsoniter.datetime;
+
+import com.jsoniter.JsonException;
+import com.jsoniter.JsonIterator;
+import com.jsoniter.any.Any;
+import com.jsoniter.output.JsonStream;
+import com.jsoniter.spi.Decoder;
+import com.jsoniter.spi.Encoder;
+import com.jsoniter.spi.JsoniterSpi;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * this is just an example
+ */
+public class JdkDatetimeSupport {
+
+    private static String pattern;
+    private final static ThreadLocal<SimpleDateFormat> sdf = new ThreadLocal<SimpleDateFormat>() {
+        @Override
+        protected SimpleDateFormat initialValue() {
+            return new SimpleDateFormat(pattern);
+        }
+    };
+
+    public static void enable(String pattern) {
+        JdkDatetimeSupport.pattern = pattern;
+        JsoniterSpi.registerTypeEncoder(Date.class, new Encoder() {
+            @Override
+            public void encode(Object obj, JsonStream stream) throws IOException {
+                stream.writeVal(sdf.get().format(obj));
+            }
+
+            @Override
+            public Any wrap(Object obj) {
+                return Any.wrap(sdf.get().format(obj));
+            }
+        });
+        JsoniterSpi.registerTypeDecoder(Date.class, new Decoder() {
+            @Override
+            public Object decode(JsonIterator iter) throws IOException {
+                try {
+                    return sdf.get().parse(iter.readString());
+                } catch (ParseException e) {
+                    throw new JsonException(e);
+                }
+            }
+        });
+    }
+}
diff --git a/src/test/java/com/jsoniter/datetime/TestJdkDatetime.java b/src/test/java/com/jsoniter/datetime/TestJdkDatetime.java
@@ -0,0 +1,18 @@
+package com.jsoniter.datetime;
+
+import com.jsoniter.JsonIterator;
+import com.jsoniter.output.JsonStream;
+import junit.framework.TestCase;
+
+import java.util.Date;
+
+
+public class TestJdkDatetime extends TestCase {
+
+    public void test() {
+        JdkDatetimeSupport.enable("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
+        assertEquals("\"1970-01-01T08:00:00.000+0800\"", JsonStream.serialize(new Date(0)));
+        Date obj = JsonIterator.deserialize("\"1970-01-01T08:00:00.000+0800\"", Date.class);
+        assertEquals(0, obj.getTime());
+    }
+}
