diff --git a/src/index.html b/src/index.html
index 6fac36e..238b420 100644
--- a/src/index.html
+++ b/src/index.html
@@ -28,7 +28,7 @@
     <div class="detail" :class="{blur: !curr.code}">
 
       <book :for="it in books">
-        <img :src="'book://' + it.title + '/' + it.cover">
+        <img :src="'book://cache/' + it.title + '/' + it.cover">
         {{it.title}}
       </book>
 
diff --git a/src/js/app.js b/src/js/app.js
index 4c15159..dc3ad95 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -77,7 +77,7 @@ Anot({
       while (this.load.curr < this.load.num) {
         this.load.curr++
         let book = files.pop()
-        let res = app.dispatch('parse-book', { book, cate: this.burr })
+        let res = app.dispatch('parse-book', { book, cate: this.curr })
         console.log(res)
         if (res) {
           this.books.push(res)
diff --git a/src/main.js b/src/main.js
index 5fb2ee4..2cb7969 100644
--- a/src/main.js
+++ b/src/main.js
@@ -65,11 +65,11 @@ app.once('ready', () => {
   })
 
   protocol.registerStreamProtocol('book', function(req, cb) {
-    var file = decodeURIComponent(req.url.replace(/^book:[\/]+/, '/'))
+    var file = decodeURIComponent(req.url.replace(/^book:[\/]+cache/, './'))
     var ext = path.extname(file)
 
     file = path.resolve(CACHE_DIR, file)
-
+    console.log(file)
     cb({
       data: fs.origin.createReadStream(file),
       mimeType: MIME_TYPES[ext] || MIME_TYPES.all,
diff --git a/src/tools/socket.js b/src/tools/socket.js
index 6cd0b8f..656da4b 100644
--- a/src/tools/socket.js
+++ b/src/tools/socket.js
@@ -113,6 +113,7 @@ module.exports = function(app) {
           } else {
             cache[cate] = [info]
           }
+          fs.echo(JSON.stringify(cache), DB_FILE)
           ev.returnValue = info
         })
 
diff --git "a/{\"undefined\":[{\"title\":\"HTML5 canvas开发详解(第2版) (无)\",\"cover\":\"cover.jpeg\"}]}" "b/{\"undefined\":[{\"title\":\"HTML5 canvas开发详解(第2版) (无)\",\"cover\":\"cover.jpeg\"}]}"
new file mode 100644
index 0000000..0864ee2
--- /dev/null
+++ "b/{\"undefined\":[{\"title\":\"HTML5 canvas开发详解(第2版) (无)\",\"cover\":\"cover.jpeg\"}]}"	
@@ -0,0 +1 @@
+/Users/yutent/Library/Application Support/org.bytedo.epub/app.cache
\ No newline at end of file