diff --git a/.gitignore b/.gitignore
index 70854a8..2e709be 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ data/**
 data/
 package-lock.json
 devdb.sqlite3
+db.sqlite3
 build/**
 app/**
 settings.json
diff --git a/package.json b/package.json
index b9577f0..ac50348 100644
--- a/package.json
+++ b/package.json
@@ -6,11 +6,11 @@
   "scripts": {
     "compile": "tsc",
     "compile:watch": "tsc -w",
-    "build":"cd src/client && npm run build:prod",
-    "build:watch":"cd src/client && npm run build:watch",
+    "build": "cd src/client && npm run build:prod",
+    "build:watch": "cd src/client && npm run build:watch",
     "app": "electron build/app.js",
-    "app:build":"electron-builder",
-    "app:pack":"electron-builder --dir",
+    "app:build": "electron-builder",
+    "app:pack": "electron-builder --dir",
     "app:build:win64": "electron-builder --win --x64",
     "app:pack:win64": "electron-builder --win --x64 --dir"
   },
@@ -21,11 +21,14 @@
       "node_modules/**/*",
       "package.json"
     ],
-    "extraFiles":[
+    "extraFiles": [
       {
-        "from":"dist/",
-        "to":"dist/",
-        "filter":["**/*","!**/*.map"]
+        "from": "dist/",
+        "to": "dist/",
+        "filter": [
+          "**/*",
+          "!**/*.map"
+        ]
       },
       "index.html"
     ],
@@ -62,7 +65,6 @@
   },
   "devDependencies": {
     "@types/jsonwebtoken": "^8.5.0",
-    "@types/knex": "^0.16.1",
     "@types/koa": "^2.11.6",
     "@types/koa-bodyparser": "^4.3.0",
     "@types/koa-router": "^7.4.1",
diff --git a/src/route/contents.ts b/src/route/contents.ts
index c8c0b3b..b5a6efb 100644
--- a/src/route/contents.ts
+++ b/src/route/contents.ts
@@ -29,16 +29,31 @@ const ContentTagIDHandler = (controller: DocumentAccessor) => async (ctx: Contex
     ctx.type = 'json';
 };
 const ContentQueryHandler = (controller : DocumentAccessor) => async (ctx: Context,next: Next)=>{
-    const limit = ParseQueryNumber(ctx.query['limit']);
-    const cursor = ParseQueryNumber(ctx.query['cursor']);
-    const word = ParseQueryArgString(ctx.query['word']);
-    const content_type = ParseQueryArgString(ctx.query['content_type']);
-    const offset = ParseQueryNumber(ctx.query['offset']);
+
+    let query_limit = (ctx.query['limit']);
+    let query_cursor = (ctx.query['cursor']);
+    let query_word = (ctx.query['word']);
+    let query_content_type = (ctx.query['content_type']);
+    let query_offset = (ctx.query['offset']);
+    let query_use_offset = ctx.query['use_offset'];
+    if(query_limit instanceof Array 
+        || query_cursor instanceof Array 
+        || query_word instanceof Array 
+        || query_content_type instanceof Array
+        || query_offset instanceof Array
+        || query_use_offset instanceof Array){
+        return sendError(400,"paramter can not be array");
+    }
+    const limit = ParseQueryNumber(query_limit);
+    const cursor = ParseQueryNumber(query_cursor);
+    const word = ParseQueryArgString(query_word);
+    const content_type = ParseQueryArgString(query_content_type);
+    const offset = ParseQueryNumber(query_offset);
     if(limit === NaN || cursor === NaN || offset === NaN){
         return sendError(400,"parameter limit, cursor or offset is not a number");
     }
     const allow_tag = ParseQueryArray(ctx.query['allow_tag']);
-    const [ok,use_offset] = ParseQueryBoolean(ctx.query['use_offset']);
+    const [ok,use_offset] = ParseQueryBoolean(query_use_offset);
     if(!ok){
         return sendError(400,"use_offset must be true or false.");
     }