fix

build.gradle

@@ -79,3 +79,5 @@ publishing {
         }
     }
 }
+
+compileJava.options.encoding = 'UTF-8'

src/main/java/com/xkball/key_command/JsonGen.java

@@ -0,0 +1,19 @@
+package com.xkball.key_command;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonObject;
+
+public class JsonGen {
+    public static void main(String[] args) {
+        JsonObject key = new JsonObject();
+        key.addProperty("command","kill @s");
+        key.addProperty("default_key",0x2F);
+        JsonArray array = new JsonArray();
+        array.add(key);
+
+        JsonObject out = new JsonObject();
+        out.add("key_array",array);
+
+        System.out.println(KeyCommand.jsonToString(out));
+    }
+}

src/main/java/com/xkball/key_command/KeyCommand.java

@@ -1,5 +1,8 @@
 package com.xkball.key_command;
 
+import com.google.gson.JsonElement;
+import com.google.gson.internal.Streams;
+import com.google.gson.stream.JsonWriter;
 import com.xkball.key_command.client.KeyManager;
 import com.xkball.key_command.config.ConfigReader;
 import net.minecraftforge.fml.common.Loader;
@@ -11,11 +14,12 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.io.StringWriter;
 
 @Mod(modid = KeyCommand.MODID, name = KeyCommand.NAME, version = KeyCommand.VERSION)
 public class KeyCommand
 {
-    public static final String MODID = "key_command";
+    public static final String MODID = "assets/key_command";
     public static final String NAME = "Key Command";
     public static final String VERSION = "1.0";
 
@@ -58,4 +62,17 @@ public void init(FMLInitializationEvent event)
     {
         KeyManager.init();
     }
+
+    public static String jsonToString(JsonElement element){
+        try {
+            StringWriter stringWriter = new StringWriter();
+            JsonWriter jsonWriter = new JsonWriter(stringWriter);
+            jsonWriter.setLenient(true);
+            jsonWriter.setIndent("  ");
+            Streams.write(element, jsonWriter);
+            return stringWriter.toString();
+        } catch (IOException e) {
+            throw new AssertionError(e);
+        }
+    }
 }

src/main/java/com/xkball/key_command/client/KeyManager.java

@@ -6,12 +6,14 @@
 import net.minecraftforge.client.settings.KeyConflictContext;
 import net.minecraftforge.client.settings.KeyModifier;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
+import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.InputEvent;
 
 import java.util.ArrayList;
 import java.util.List;
 
+@Mod.EventBusSubscriber
 public class KeyManager {
     public static List<KeyBind> keys = new ArrayList<>();
 

src/main/java/com/xkball/key_command/config/ConfigReader.java

@@ -17,7 +17,7 @@ public static void readConfig(File file) throws IllegalArgumentException{
             JsonElement jsonExisted = new JsonParser().parse(new String(Files.readAllBytes(file.toPath())));
             if(jsonExisted.isJsonNull()) throw new IllegalArgumentException();
 
-            JsonArray keyArray = jsonExisted.getAsJsonArray();
+            JsonArray keyArray = jsonExisted.getAsJsonObject().getAsJsonArray("key_array");
 
             for (JsonElement element : keyArray) {
                 JsonObject obj = element.getAsJsonObject();

src/main/java/com/xkball/key_command/network/packets/KeyEventToServerPacket.java

@@ -6,6 +6,7 @@
 import io.netty.buffer.ByteBuf;
 import mcp.MethodsReturnNonnullByDefault;
 import net.minecraft.command.ICommandSender;
+import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.world.World;
@@ -58,7 +59,13 @@ public World getEntityWorld() {
                         public MinecraftServer getServer() {
                             return server;
                         }
+
+                        @Override
+                        public Entity getCommandSenderEntity() {
+                            return player;
+                        }
                     },command);
+                    return;
                 }
             }
         }