fix #107 annotation should be marked on getter/setter if present

Author: taowen

Diff for: src/main/java/com/jsoniter/spi/Config.java

@@ -377,8 +377,10 @@ private void detectCtor(ClassDescriptor desc) {
     private void updateBindings(ClassDescriptor desc) {
         boolean globalOmitDefault = JsoniterSpi.getCurrentConfig().omitDefaultValue();
         for (Binding binding : desc.allBindings()) {
+            boolean annotated = false;
             JsonIgnore jsonIgnore = getJsonIgnore(binding.annotations);
             if (jsonIgnore != null) {
+                annotated = true;
                 if (jsonIgnore.ignoreDecoding()) {
                     binding.fromNames = new String[0];
                 }
@@ -389,6 +391,7 @@ private void updateBindings(ClassDescriptor desc) {
             // map JsonUnwrapper is not getter
             JsonUnwrapper jsonUnwrapper = getJsonUnwrapper(binding.annotations);
             if (jsonUnwrapper != null) {
+                annotated = true;
                 binding.fromNames = new String[0];
                 binding.toNames = new String[0];
             }
@@ -397,20 +400,30 @@ private void updateBindings(ClassDescriptor desc) {
             }
             JsonProperty jsonProperty = getJsonProperty(binding.annotations);
             if (jsonProperty != null) {
+                annotated = true;
                 updateBindingWithJsonProperty(binding, jsonProperty);
             }
             if (getAnnotation(binding.annotations, JsonMissingProperties.class) != null) {
+                annotated = true;
                 // this binding will not bind from json
                 // instead it will be set by jsoniter with missing property names
                 binding.fromNames = new String[0];
                 desc.onMissingProperties = binding;
             }
             if (getAnnotation(binding.annotations, JsonExtraProperties.class) != null) {
+                annotated = true;
                 // this binding will not bind from json
                 // instead it will be set by jsoniter with extra properties
                 binding.fromNames = new String[0];
                 desc.onExtraProperties = binding;
             }
+            if (annotated && binding.field != null) {
+                for (Binding setter : desc.setters) {
+                    if (binding.name.equals(setter.name)) {
+                        throw new JsonException("annotation should be marked on getter/setter for field: " + binding.name);
+                    }
+                }
+            }
         }
     }
 

Diff for: src/test/java/com/jsoniter/TestAnnotationJsonProperty.java

@@ -5,6 +5,7 @@
 import com.jsoniter.annotation.JsonProperty;
 import com.jsoniter.fuzzy.StringIntDecoder;
 import com.jsoniter.output.JsonStream;
+import com.jsoniter.spi.JsonException;
 import junit.framework.TestCase;
 
 import java.io.IOException;
@@ -158,4 +159,26 @@ public void test_creator_with_json_property() {
         assertEquals(100, obj.field);
         assertEquals("{\"field\":100}", JsonStream.serialize(obj));
     }
+
+    public static class TestObject11 {
+        @JsonProperty("hello")
+        public int field;
+
+        public int getField() {
+            return field;
+        }
+
+        public void setField(int field) {
+            this.field = field;
+        }
+    }
+
+    public void test_should_throw_exception_when_json_property_on_field_when_getter_and_setter_present() {
+        String input = "{\"hello\":100}";
+        try {
+            JsonIterator.deserialize(input, TestObject11.class);
+            fail();
+        } catch (JsonException e) {
+        }
+    }
 }