Optimization GSON.

Author: liuhongyuand

EasyRest/src/main/java/tech/dbgsoftware/easyrest/utils/DoubleTypeAdapter.java

@@ -0,0 +1,33 @@
+package tech.dbgsoftware.easyrest.utils;
+
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+import java.io.IOException;
+
+public class DoubleTypeAdapter extends TypeAdapter<Double> {
+    @Override
+    public Double read(JsonReader reader) throws IOException {
+        if(reader.peek() == JsonToken.NULL){
+            reader.nextNull();
+            return 0D;
+        }
+        String stringValue = reader.nextString();
+        try{
+            Double value = Double.valueOf(stringValue);
+            return value;
+        }catch(NumberFormatException e){
+            return 0D;
+        }
+    }
+    @Override
+    public void write(JsonWriter writer, Double value) throws IOException {
+        if (value == null) {
+            writer.nullValue();
+            return;
+        }
+        writer.value(value);
+    }
+}

EasyRest/src/main/java/tech/dbgsoftware/easyrest/utils/IntegerTypeAdapter.java

@@ -0,0 +1,33 @@
+package tech.dbgsoftware.easyrest.utils;
+
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+import java.io.IOException;
+
+public class IntegerTypeAdapter extends TypeAdapter<Integer> {
+    @Override
+    public Integer read(JsonReader reader) throws IOException {
+        if(reader.peek() == JsonToken.NULL){
+            reader.nextNull();
+            return 0;
+        }
+        String stringValue = reader.nextString();
+        try{
+            Integer value = Integer.valueOf(stringValue);
+            return value;
+        }catch(NumberFormatException e){
+            return 0;
+        }
+    }
+    @Override
+    public void write(JsonWriter writer, Integer value) throws IOException {
+        if (value == null) {
+            writer.nullValue();
+            return;
+        }
+        writer.value(value);
+    }
+}

EasyRest/src/main/java/tech/dbgsoftware/easyrest/utils/JsonTranslationUtil.java

@@ -7,7 +7,14 @@
 
 public class JsonTranslationUtil {
 
-    private static final Gson GSON = new GsonBuilder().create();
+    private static final Gson GSON = new GsonBuilder()
+            .registerTypeAdapter(Long.class, new LongTypeAdapter())
+            .registerTypeAdapter(long.class, new IntegerTypeAdapter())
+            .registerTypeAdapter(Double.class, new DoubleTypeAdapter())
+            .registerTypeAdapter(double.class, new DoubleTypeAdapter())
+            .registerTypeAdapter(Integer.class, new IntegerTypeAdapter())
+            .registerTypeAdapter(int.class, new IntegerTypeAdapter())
+            .create();
 
     public static String toJsonString(Object object){
         return GSON.toJson(object);
@@ -21,6 +28,7 @@ public static <T> T fromJson(String jsonString, Type type){
         try {
             return GSON.fromJson(jsonString, type);
         } catch (Exception e){
+            LogUtils.error(e.getMessage(), e);
             return null;
         }
     }

EasyRest/src/main/java/tech/dbgsoftware/easyrest/utils/LongTypeAdapter.java

@@ -0,0 +1,33 @@
+package tech.dbgsoftware.easyrest.utils;
+
+import com.google.gson.TypeAdapter;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonToken;
+import com.google.gson.stream.JsonWriter;
+
+import java.io.IOException;
+
+public class LongTypeAdapter extends TypeAdapter<Long> {
+    @Override
+    public Long read(JsonReader reader) throws IOException {
+        if(reader.peek() == JsonToken.NULL){
+            reader.nextNull();
+            return 0L;
+        }
+        String stringValue = reader.nextString();
+        try{
+            Long value = Long.valueOf(stringValue);
+            return value;
+        }catch(NumberFormatException e){
+            return 0L;
+        }
+    }
+    @Override
+    public void write(JsonWriter writer, Long value) throws IOException {
+        if (value == null) {
+            writer.nullValue();
+            return;
+        }
+        writer.value(value);
+    }
+}