diff --git a/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java b/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
index 8adb564d..4dc826e0 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/AriaManager.java
@@ -130,7 +130,7 @@ import org.xml.sax.SAXException;
         DownloadEntity.class, UploadEntity.class, DownloadGroupEntity.class,
         DownloadTaskEntity.class, UploadTaskEntity.class, DownloadGroupTaskEntity.class
     };
-    String sql = "UPDATE %s SET state=2 WHERE state in (3,4,5,6)";
+    String sql = "UPDATE %s SET state=2 WHERE state IN (3,4,5,6)";
     for (Class clazz : clazzs) {
       String temp = String.format(sql, clazz.getSimpleName());
       DbEntity.exeSql(temp);
@@ -376,6 +376,10 @@ import org.xml.sax.SAXException;
    * 初始化配置文件
    */
   private void initConfig() {
+    mDConfig = Configuration.getInstance().downloadCfg;
+    mUConfig = Configuration.getInstance().uploadCfg;
+    mAConfig = Configuration.getInstance().appCfg;
+
     File xmlFile = new File(APP.getFilesDir().getPath() + Configuration.XML_FILE);
     File tempDir = new File(APP.getFilesDir().getPath() + "/temp");
     if (!xmlFile.exists()) {
@@ -389,16 +393,13 @@ import org.xml.sax.SAXException;
         }
         CommonUtil.createFileFormInputStream(APP.getAssets().open("aria_config.xml"),
             file.getPath());
-        if (!CommonUtil.checkMD5(md5Code, file)) {
+        if (!CommonUtil.checkMD5(md5Code, file) || !Configuration.getInstance().configExists()) {
           loadConfig();
         }
       } catch (IOException e) {
         e.printStackTrace();
       }
     }
-    mDConfig = Configuration.DownloadConfig.getInstance();
-    mUConfig = Configuration.UploadConfig.getInstance();
-    mAConfig = Configuration.AppConfig.getInstance();
     if (tempDir.exists()) {
       File newDir = new File(APP.getFilesDir().getPath() + DOWNLOAD_TEMP_DIR);
       newDir.mkdirs();
diff --git a/Aria/src/main/java/com/arialyy/aria/core/ConfigHelper.java b/Aria/src/main/java/com/arialyy/aria/core/ConfigHelper.java
index e8dda5b6..9c0d8ae5 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/ConfigHelper.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/ConfigHelper.java
@@ -22,15 +22,14 @@ import org.xml.sax.SAXException;
 import org.xml.sax.helpers.DefaultHandler;
 
 /**
- * Created by lyy on 2017/5/22.
- * 读取配置文件
+ * Created by lyy on 2017/5/22. 读取配置文件
  */
 class ConfigHelper extends DefaultHandler {
   private final String TAG = "ConfigHelper";
 
-  private Configuration.DownloadConfig mDownloadConfig = Configuration.DownloadConfig.getInstance();
-  private Configuration.UploadConfig mUploadConfig = Configuration.UploadConfig.getInstance();
-  private Configuration.AppConfig mAppConfig = Configuration.AppConfig.getInstance();
+  private Configuration.DownloadConfig mDownloadConfig = Configuration.getInstance().downloadCfg;
+  private Configuration.UploadConfig mUploadConfig = Configuration.getInstance().uploadCfg;
+  private Configuration.AppConfig mAppConfig = Configuration.getInstance().appCfg;
   private @ConfigType int mType;
 
   @Override public void startDocument() throws SAXException {
@@ -357,8 +356,8 @@ class ConfigHelper extends DefaultHandler {
 
   @Override public void endDocument() throws SAXException {
     super.endDocument();
-    mDownloadConfig.saveAll();
-    mUploadConfig.saveAll();
-    mAppConfig.saveAll();
+    mDownloadConfig.save();
+    mUploadConfig.save();
+    mAppConfig.save();
   }
 }
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/BaseDListener.java b/Aria/src/main/java/com/arialyy/aria/core/download/BaseDListener.java
index ef997792..4c43b7c7 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/BaseDListener.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/BaseDListener.java
@@ -57,13 +57,7 @@ public class BaseDListener extends BaseListener<DownloadEntity, DownloadTaskEnti
     mEntity.setComplete(state == IEntity.STATE_COMPLETE);
     if (state == IEntity.STATE_CANCEL) {
       if (mEntity instanceof DownloadEntity) {
-        TaskRecord record =
-            DbEntity.findFirst(TaskRecord.class, "TaskRecord.filePath=?", mTaskEntity.getKey());
-        if (record != null) {
-          CommonUtil.delTaskRecord(record, mTaskEntity.isRemoveFile(), mEntity);
-        } else {
-          CommonUtil.delTaskRecord(mEntity.getDownloadPath(), 1, mTaskEntity.isRemoveFile());
-        }
+        CommonUtil.delTaskRecord(mEntity.getDownloadPath(), 1, mTaskEntity.isRemoveFile());
       }
       return;
     } else if (state == IEntity.STATE_STOP) {
diff --git a/Aria/src/main/java/com/arialyy/aria/core/upload/BaseUListener.java b/Aria/src/main/java/com/arialyy/aria/core/upload/BaseUListener.java
index eb374223..b8362692 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/upload/BaseUListener.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/upload/BaseUListener.java
@@ -42,17 +42,8 @@ class BaseUListener extends BaseListener<UploadEntity, UploadTaskEntity, UploadT
     mEntity.setComplete(state == IEntity.STATE_COMPLETE);
     if (state == IEntity.STATE_CANCEL) {
       if (mEntity instanceof UploadEntity) {
-        TaskRecord record =
-            DbEntity.findFirst(TaskRecord.class, "TaskRecord.filePath=?", mTaskEntity.getKey());
-        if (record != null) {
-          CommonUtil.delTaskRecord(record, mTaskEntity.isRemoveFile(), mEntity);
-        }else {
-          CommonUtil.delTaskRecord(mEntity.getFilePath(), 2, mTaskEntity.isRemoveFile());
-        }
+        CommonUtil.delTaskRecord(mEntity.getFilePath(), 2, mTaskEntity.isRemoveFile());
       }
-      //else if (mEntity instanceof AbsGroupEntity) {
-      //  CommonUtil.delGroupTaskRecord(mTaskEntity.isRemoveFile(), ((AbsGroupEntity) mEntity));
-      //}
       return;
     } else if (state == IEntity.STATE_STOP) {
       mEntity.setStopTime(System.currentTimeMillis());
diff --git a/Aria/src/main/java/com/arialyy/aria/util/CommonUtil.java b/Aria/src/main/java/com/arialyy/aria/util/CommonUtil.java
index 98fa4d10..a72ff551 100644
--- a/Aria/src/main/java/com/arialyy/aria/util/CommonUtil.java
+++ b/Aria/src/main/java/com/arialyy/aria/util/CommonUtil.java
@@ -50,6 +50,9 @@ import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
 import java.io.UnsupportedEncodingException;
 import java.lang.reflect.Field;
 import java.lang.reflect.ParameterizedType;
@@ -76,6 +79,102 @@ import java.util.regex.Pattern;
 public class CommonUtil {
   private static final String TAG = "CommonUtil";
 
+  /**
+   * 删除文件
+   * @param path  文件路径
+   * @return  {@code true}删除成功、{@co'de false}删除失败
+   */
+  public static boolean deleteFile(String path){
+    if (TextUtils.isEmpty(path)){
+      ALog.e(TAG, "删除文件失败，路径为空");
+      return false;
+    }
+    File file = new File(path);
+    if (file.exists()) {
+      final File to = new File(file.getAbsolutePath() + System.currentTimeMillis());
+      if (file.renameTo(to)) {
+        return to.delete();
+      } else {
+        return file.delete();
+      }
+    }
+    return false;
+  }
+
+  /**
+   * 将对象写入文件
+   *
+   * @param filePath 文件路径
+   * @param data data数据必须实现{@link Serializable}接口
+   */
+  public static void writeObjToFile(String filePath, Object data) {
+    if (!(data instanceof Serializable)) {
+      ALog.e(TAG, "对象写入文件失败，data数据必须实现Serializable接口");
+      return;
+    }
+    FileOutputStream ops = null;
+    try {
+      if (!createFile(filePath)) {
+        return;
+      }
+      ops = new FileOutputStream(filePath);
+      ObjectOutputStream oops = new ObjectOutputStream(ops);
+      oops.writeObject(data);
+    } catch (FileNotFoundException e) {
+      e.printStackTrace();
+    } catch (IOException e) {
+      e.printStackTrace();
+    } finally {
+      if (ops != null) {
+        try {
+          ops.close();
+        } catch (IOException e) {
+          e.printStackTrace();
+        }
+      }
+    }
+  }
+
+  /**
+   * 从文件中读取对象
+   *
+   * @param filePath 文件路径
+   * @return 如果读取成功，返回相应的Obj对象，读取失败，返回null
+   */
+  public static Object readObjFromFile(String filePath) {
+    if (TextUtils.isEmpty(filePath)) {
+      ALog.e(TAG, "文件路径为空");
+      return null;
+    }
+    File file = new File(filePath);
+    if (!file.exists()) {
+      ALog.e(TAG, String.format("文件【%s】不存在", filePath));
+      return null;
+    }
+    FileInputStream fis = null;
+    try {
+      fis = new FileInputStream(filePath);
+      ObjectInputStream oois = new ObjectInputStream(fis);
+      Object obj = oois.readObject();
+      return obj;
+    } catch (FileNotFoundException e) {
+      e.printStackTrace();
+    } catch (IOException e) {
+      e.printStackTrace();
+    } catch (ClassNotFoundException e) {
+      e.printStackTrace();
+    } finally {
+      if (fis != null) {
+        try {
+          fis.close();
+        } catch (IOException e) {
+          e.printStackTrace();
+        }
+      }
+    }
+    return null;
+  }
+
   /**
    * 获取分块文件的快大小
    *
@@ -583,7 +682,7 @@ public class CommonUtil {
     TaskRecord record = DbEntity.findFirst(TaskRecord.class, "filePath=?", filePath);
     File file = new File(filePath);
     if (record == null) {
-      ALog.w(TAG, "删除记录失败，记录为空");
+      ALog.w(TAG, "记录为空");
     } else {
       // 删除分块文件
       if (record.isBlock) {
@@ -991,11 +1090,13 @@ public class CommonUtil {
 
   /**
    * 创建文件 当文件不存在的时候就创建一个文件。 如果文件存在，先删除原文件，然后重新创建一个新文件
+   *
+   * @return {@code true} 创建成功、{@code false} 创建失败
    */
-  public static void createFile(String path) {
+  public static boolean createFile(String path) {
     if (TextUtils.isEmpty(path)) {
       ALog.e(TAG, "文件路径不能为null");
-      return;
+      return false;
     }
     File file = new File(path);
     if (file.getParentFile() == null || !file.getParentFile().exists()) {
@@ -1016,10 +1117,13 @@ public class CommonUtil {
     try {
       if (file.createNewFile()) {
         ALog.d(TAG, "创建文件成功:" + file.getAbsolutePath());
+        return true;
       }
     } catch (IOException e) {
       e.printStackTrace();
+      return false;
     }
+    return false;
   }
 
   /**
diff --git a/DEV_LOG.md b/DEV_LOG.md
index 4455bc33..82d08400 100644
--- a/DEV_LOG.md
+++ b/DEV_LOG.md
@@ -19,6 +19,7 @@
      - 初始化时自动判断文件是否被删除，文件被删除的任务将自动重置默认值
      - 修复刷新url后，文件无法删除的 bug
      - fix bug https://github.com/AriaLyy/Aria/issues/309
+     - 优化配置文件的读取
   + v_3.5.1
     - 优化`taskExists`方法
     - 添加`post`参数请求支持
diff --git a/app/src/main/assets/aria_config.xml b/app/src/main/assets/aria_config.xml
index aacfdc1b..018b1e63 100644
--- a/app/src/main/assets/aria_config.xml
+++ b/app/src/main/assets/aria_config.xml
@@ -13,7 +13,7 @@
   <download>
 
     <!--设置任务最大下载速度，0表示不限速，单位为：kb-->
-    <maxSpeed value="0"/>
+    <maxSpeed value="128"/>
 
     <!--
       多线程下载是否使用块下载模式，{@code true}使用，{@code false}不使用
diff --git a/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java b/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
index f4dad30c..45eff9ca 100644
--- a/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
+++ b/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
@@ -47,11 +47,11 @@ import java.util.Map;
 
 public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
 
-  private static final String DOWNLOAD_URL =
+  private String DOWNLOAD_URL =
       //"http://kotlinlang.org/docs/kotlin-docs.pdf";
       //"https://atom-installer.github.com/v1.13.0/AtomSetup.exe?s=1484074138&ext=.exe";
       //"http://static.gaoshouyou.com/d/22/94/822260b849944492caadd2983f9bb624.apks";
-      "http://120.55.95.61:8811/ghcg/zg/武义总规纲要成果.zip";
+      "http://120.55.95.61:8811/ghcg/zg/武义总规纲要成果.zips";
       //"https://yizi-kejian.oss-cn-beijing.aliyuncs.com/qimeng/package1/qmtable11.zip";
       //"http://rs.0.gaoshouyou.com/d/04/1e/400423a7551e1f3f0eb1812afa1f9b44.apk";
       //"http://58.210.9.131/tpk/sipgt//TDLYZTGH.tpk"; //chunked 下载
@@ -77,8 +77,8 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
    * 设置start 和 stop 按钮状态
    */
   private void setBtState(boolean state) {
-    mStart.setEnabled(state);
-    mStop.setEnabled(!state);
+    //mStart.setEnabled(state);
+    //mStop.setEnabled(!state);
   }
 
   @Override public boolean onCreateOptionsMenu(Menu menu) {
@@ -141,7 +141,7 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
 
   @Download.onTaskRunning protected void running(DownloadTask task) {
     ALog.d(TAG, String.format("%s_running_%s", getClass().getName(), hashCode()));
-    if (task.getKey().equals(DOWNLOAD_URL)) {
+    //if (task.getKey().equals(DOWNLOAD_URL)) {
       //Log.d(TAG, task.getKey());
       long len = task.getFileSize();
       if (len == 0) {
@@ -150,7 +150,7 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
         getBinding().setProgress(task.getPercent());
       }
       getBinding().setSpeed(task.getConvertSpeed());
-    }
+    //}
   }
 
   @Download.onTaskResume void taskResume(DownloadTask task) {
@@ -187,16 +187,17 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
           .load(DOWNLOAD_URL)
           .updateUrl("http://120.55.95.61:8811/ghcg/zg/武义总规纲要成果.zip")
           .start();
+      //DOWNLOAD_URL = "http://120.55.95.61:8811/ghcg/zg/武义总规纲要成果.zip";
       //ALog.d(TAG, ALog.getExceptionString(e));
     }
   }
 
   @Download.onTaskComplete void taskComplete(DownloadTask task) {
-    if (task.getKey().equals(DOWNLOAD_URL)) {
+    //if (task.getKey().equals(DOWNLOAD_URL)) {
       getBinding().setProgress(100);
       Toast.makeText(SingleTaskActivity.this, "下载完成", Toast.LENGTH_SHORT).show();
       mStart.setText("重新开始？");
-      mCancel.setEnabled(false);
+      //mCancel.setEnabled(false);
       setBtState(true);
       getBinding().setSpeed("");
       L.d(TAG, "path ==> " + task.getDownloadEntity().getDownloadPath());
@@ -207,7 +208,7 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
       //File apkFile = new File(task.getDownloadPath());
       //install.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
       //startActivity(install);
-    }
+    //}
   }
 
   @Download.onNoSupportBreakPoint public void onNoSupportBreakPoint(DownloadTask task) {
diff --git a/app/src/main/java/com/arialyy/simple/upload/HttpUploadActivity.java b/app/src/main/java/com/arialyy/simple/upload/HttpUploadActivity.java
index 048800c9..e092b276 100644
--- a/app/src/main/java/com/arialyy/simple/upload/HttpUploadActivity.java
+++ b/app/src/main/java/com/arialyy/simple/upload/HttpUploadActivity.java
@@ -96,7 +96,7 @@ public class HttpUploadActivity extends BaseActivity<ActivityUploadBinding> {
 
   @Upload.onTaskComplete public void taskComplete(UploadTask task) {
     L.d(TAG, "上传完成");
-    L.d(TAG, "上传成功返回数据（如果有的话）：" + task.getEntity().getResponseStr());
+    L.d(TAG, "上传成功服务端返回数据（如果有的话）：" + task.getEntity().getResponseStr());
     getBinding().setSpeed("");
     getBinding().setProgress(100);
   }
diff --git a/aria/src/main/java/com/arialyy/aria/core/Configuration.java b/aria/src/main/java/com/arialyy/aria/core/Configuration.java
index 7e518ed5..c6b22cbb 100644
--- a/aria/src/main/java/com/arialyy/aria/core/Configuration.java
+++ b/aria/src/main/java/com/arialyy/aria/core/Configuration.java
@@ -23,28 +23,90 @@ import com.arialyy.aria.core.queue.UploadTaskQueue;
 import com.arialyy.aria.util.ALog;
 import com.arialyy.aria.util.AriaCrashHandler;
 import com.arialyy.aria.util.CommonUtil;
-import com.arialyy.aria.util.ErrorHelp;
 import java.io.File;
-import java.lang.reflect.Field;
-import java.lang.reflect.Modifier;
-import java.util.List;
-import java.util.Properties;
+import java.io.Serializable;
 
 /**
- * Created by lyy on 2016/12/8.
- * 信息配置
+ * Created by lyy on 2016/12/8. 信息配置
  */
-public class Configuration {
-  static final String TAG = "Configuration";
-  static final String DOWNLOAD_CONFIG_FILE = "/Aria/DownloadConfig.properties";
-  static final String UPLOAD_CONFIG_FILE = "/Aria/UploadConfig.properties";
-  static final String APP_CONFIG_FILE = "/Aria/AppConfig.properties";
+final class Configuration {
+  private static final String TAG = "Configuration";
+  private static final String DOWNLOAD_CONFIG_FILE = "/Aria/AriaDownload.cfg";
+  private static final String UPLOAD_CONFIG_FILE = "/Aria/AriaUpload.cfg";
+  private static final String APP_CONFIG_FILE = "/Aria/AriaApp.cfg";
+  private static final int TYPE_DOWNLOAD = 1;
+  private static final int TYPE_UPLOAD = 2;
+  private static final int TYPE_APP = 3;
+  private static volatile Configuration INSTANCE = null;
   static final String XML_FILE = "/Aria/aria_config.xml";
-  static final int TYPE_DOWNLOAD = 1;
-  static final int TYPE_UPLOAD = 2;
-  static final int TYPE_APP = 3;
+  DownloadConfig downloadCfg;
+  UploadConfig uploadCfg;
+  AppConfig appCfg;
 
-  abstract static class BaseConfig {
+  private Configuration() {
+    //删除老版本的配置文件
+    String basePath = AriaManager.APP.getFilesDir().getPath();
+    File oldDCfg = new File(String.format("%s/Aria/DownloadConfig.properties", basePath));
+    if (oldDCfg.exists()) { // 只需要判断一个
+      File oldUCfg = new File(String.format("%s/Aria/UploadConfig.properties", basePath));
+      File oldACfg = new File(String.format("%s/Aria/AppConfig.properties", basePath));
+      oldDCfg.delete();
+      oldUCfg.delete();
+      oldACfg.delete();
+      // 删除配置触发更新
+      File temp = new File(String.format("%s%s", basePath, XML_FILE));
+      if (temp.exists()) {
+        temp.delete();
+      }
+    }
+    File newDCfg = new File(String.format("%s%s", basePath, DOWNLOAD_CONFIG_FILE));
+    File newUCfg = new File(String.format("%s%s", basePath, UPLOAD_CONFIG_FILE));
+    File newACfg = new File(String.format("%s%s", basePath, APP_CONFIG_FILE));
+    // 加载下载配置
+    if (newDCfg.exists()) {
+      downloadCfg = (DownloadConfig) CommonUtil.readObjFromFile(newDCfg.getPath());
+    }
+    if (downloadCfg == null) {
+      downloadCfg = new DownloadConfig();
+    }
+    // 加载上传配置
+    if (newUCfg.exists()) {
+      uploadCfg = (UploadConfig) CommonUtil.readObjFromFile(newUCfg.getPath());
+    }
+    if (uploadCfg == null) {
+      uploadCfg = new UploadConfig();
+    }
+    // 加载app配置
+    if (newACfg.exists()) {
+      appCfg = (AppConfig) CommonUtil.readObjFromFile(newACfg.getPath());
+    }
+    if (appCfg == null) {
+      appCfg = new AppConfig();
+    }
+  }
+
+  static Configuration getInstance() {
+    if (INSTANCE == null) {
+      synchronized (AppConfig.class) {
+        INSTANCE = new Configuration();
+      }
+    }
+    return INSTANCE;
+  }
+
+  /**
+   * 检查配置文件是否存在，只要{@link DownloadConfig}、{@link UploadConfig}、{@link AppConfig}其中一个不存在 则任务配置文件不存在
+   *
+   * @return {@code true}配置存在，{@code false}配置不存在
+   */
+  boolean configExists() {
+    String basePath = AriaManager.APP.getFilesDir().getPath();
+    return (new File(String.format("%s%s", basePath, DOWNLOAD_CONFIG_FILE))).exists()
+        && (new File(String.format("%s%s", basePath, UPLOAD_CONFIG_FILE))).exists()
+        && (new File(String.format("%s%s", basePath, APP_CONFIG_FILE))).exists();
+  }
+
+  abstract static class BaseConfig implements Serializable {
 
     /**
      * 类型
@@ -53,138 +115,29 @@ public class Configuration {
      */
     abstract int getType();
 
-    /**
-     * 加载配置
-     */
-    void loadConfig() {
-      String path = null;
-      Class clazz = null;
-      switch (getType()) {
-        case TYPE_DOWNLOAD:
-          path = DOWNLOAD_CONFIG_FILE;
-          clazz = DownloadConfig.class;
-          break;
-        case TYPE_UPLOAD:
-          path = UPLOAD_CONFIG_FILE;
-          clazz = UploadConfig.class;
-          break;
-        case TYPE_APP:
-          path = APP_CONFIG_FILE;
-          clazz = AppConfig.class;
-          break;
-      }
-      if (TextUtils.isEmpty(path)) {
-        ALog.e(TAG, "读取配置失败：未知文件类型");
-        ErrorHelp.saveError(TAG, "读取配置失败：未知文件类型", "");
-        return;
-      }
-
-      File file = new File(AriaManager.APP.getFilesDir().getPath() + path);
-      if (file.exists()) {
-        Properties properties = CommonUtil.loadConfig(file);
-        List<Field> fields = CommonUtil.getAllFields(clazz);
-        try {
-          for (Field field : fields) {
-            int m = field.getModifiers();
-            String fileName = field.getName();
-            if (fileName.equals("oldMaxTaskNum")
-                || field.isSynthetic()
-                || Modifier.isFinal(m)
-                || Modifier.isStatic(m)
-                || fileName.equals("shadow$_klass_")
-                || fileName.equals("shadow$_monitor_")) {
-              continue;
-            }
-            field.setAccessible(true);
-            String value = properties.getProperty(field.getName());
-            if (TextUtils.isEmpty(value) || value.equalsIgnoreCase("null")) continue;
-            Class<?> type = field.getType();
-            if (type == String.class) {
-              field.set(this, value);
-            } else if (type == int.class || type == Integer.class) {
-              if (fileName.equalsIgnoreCase("maxSpeed")) { //兼容以前版本，以前maxSpeed是double类型的
-                Double d = Double.parseDouble(value);
-                field.setInt(this, (int) d.doubleValue());
-              } else {
-                field.setInt(this, Integer.parseInt(value));
-              }
-            } else if (type == float.class || type == Float.class) {
-              field.setFloat(this, Float.parseFloat(value));
-            } else if (type == double.class || type == Double.class) {
-              if (TextUtils.isEmpty(value)) {
-                value = "0";
-              }
-              field.setDouble(this, Double.parseDouble(value));
-            } else if (type == long.class || type == Long.class) {
-              field.setLong(this, Long.parseLong(value));
-            } else if (type == boolean.class || type == Boolean.class) {
-              field.setBoolean(this, Boolean.parseBoolean(value));
-            }
-          }
-        } catch (IllegalAccessException e) {
-          e.printStackTrace();
-        }
-      }
-    }
-
-    /**
-     * 保存key
-     */
-    void saveKey(String key, String value) {
-      String path = null;
-      switch (getType()) {
-        case TYPE_DOWNLOAD:
-          path = DOWNLOAD_CONFIG_FILE;
-          break;
-        case TYPE_UPLOAD:
-          path = UPLOAD_CONFIG_FILE;
-          break;
-        case TYPE_APP:
-          path = APP_CONFIG_FILE;
-          break;
-      }
-      File file = new File(
-          AriaManager.APP.getFilesDir().getPath() + path);
-      if (file.exists()) {
-        Properties properties = CommonUtil.loadConfig(file);
-        properties.setProperty(key, value);
-        CommonUtil.saveConfig(file, properties);
-      }
-    }
-
     /**
      * 保存配置
      */
-    void saveAll() {
-      List<Field> fields = CommonUtil.getAllFields(getClass());
-      try {
-        String path = null;
-        switch (getType()) {
-          case TYPE_DOWNLOAD:
-            path = DOWNLOAD_CONFIG_FILE;
-            break;
-          case TYPE_UPLOAD:
-            path = UPLOAD_CONFIG_FILE;
-            break;
-          case TYPE_APP:
-            path = APP_CONFIG_FILE;
-            break;
-        }
-        File file = new File(
-            AriaManager.APP.getFilesDir().getPath() + path);
-        Properties properties = CommonUtil.loadConfig(file);
-        for (Field field : fields) {
-          int m = field.getModifiers();
-          if (field.isSynthetic() || Modifier.isFinal(m) || Modifier.isStatic(m) || field.getName()
-              .equals("shadow$_klass_") || field.getName().equals("shadow$_monitor_")) {
-            continue;
-          }
-          field.setAccessible(true);
-          properties.setProperty(field.getName(), field.get(this) + "");
-        }
-        CommonUtil.saveConfig(file, properties);
-      } catch (IllegalAccessException e) {
-        e.printStackTrace();
+    void save() {
+      String basePath = AriaManager.APP.getFilesDir().getPath();
+      String path = null;
+      switch (getType()) {
+        case TYPE_DOWNLOAD:
+          path = DOWNLOAD_CONFIG_FILE;
+          break;
+        case TYPE_UPLOAD:
+          path = UPLOAD_CONFIG_FILE;
+          break;
+        case TYPE_APP:
+          path = APP_CONFIG_FILE;
+          break;
+      }
+      if (!TextUtils.isEmpty(path)) {
+        String tempPath = String.format("%s%s", basePath, path);
+        CommonUtil.deleteFile(tempPath);
+        CommonUtil.writeObjToFile(tempPath, this);
+      } else {
+        ALog.e(TAG, String.format("保存配置失败，配置类型：%s，原因：路径错误", getType()));
       }
     }
   }
@@ -192,7 +145,7 @@ public class Configuration {
   /**
    * 通用任务配置
    */
-  abstract static class BaseTaskConfig extends BaseConfig {
+  abstract static class BaseTaskConfig extends BaseConfig implements Serializable {
 
     /**
      * 设置写文件buff大小，该数值大小不能小于2048，数值变小，下载速度会变慢
@@ -259,7 +212,7 @@ public class Configuration {
 
     public BaseTaskConfig setMaxSpeed(int maxSpeed) {
       this.maxSpeed = maxSpeed;
-      saveKey("maxSpeed", String.valueOf(maxSpeed));
+      save();
       return this;
     }
 
@@ -278,7 +231,7 @@ public class Configuration {
         return this;
       }
       this.updateInterval = updateInterval;
-      saveKey("updateInterval", String.valueOf(updateInterval));
+      save();
       return this;
     }
 
@@ -288,7 +241,7 @@ public class Configuration {
 
     public BaseTaskConfig setQueueMod(String queueMod) {
       this.queueMod = queueMod;
-      saveKey("queueMod", queueMod);
+      save();
       return this;
     }
 
@@ -302,7 +255,7 @@ public class Configuration {
 
     public BaseTaskConfig setReTryNum(int reTryNum) {
       this.reTryNum = reTryNum;
-      saveKey("reTryNum", String.valueOf(reTryNum));
+      save();
       return this;
     }
 
@@ -312,7 +265,7 @@ public class Configuration {
 
     public BaseTaskConfig setReTryInterval(int reTryInterval) {
       this.reTryInterval = reTryInterval;
-      saveKey("reTryInterval", String.valueOf(reTryInterval));
+      save();
       return this;
     }
 
@@ -322,7 +275,7 @@ public class Configuration {
 
     public BaseTaskConfig setConvertSpeed(boolean convertSpeed) {
       isConvertSpeed = convertSpeed;
-      saveKey("isConvertSpeed", String.valueOf(isConvertSpeed));
+      save();
       return this;
     }
 
@@ -332,7 +285,7 @@ public class Configuration {
 
     public BaseTaskConfig setConnectTimeOut(int connectTimeOut) {
       this.connectTimeOut = connectTimeOut;
-      saveKey("connectTimeOut", String.valueOf(connectTimeOut));
+      save();
       return this;
     }
 
@@ -342,7 +295,7 @@ public class Configuration {
 
     public BaseTaskConfig setNotNetRetry(boolean notNetRetry) {
       this.notNetRetry = notNetRetry;
-      saveKey("notNetRetry", String.valueOf(notNetRetry));
+      save();
       return this;
     }
 
@@ -352,7 +305,7 @@ public class Configuration {
 
     public BaseTaskConfig setIOTimeOut(int iOTimeOut) {
       this.iOTimeOut = iOTimeOut;
-      saveKey("iOTimeOut", String.valueOf(iOTimeOut));
+      save();
       return this;
     }
 
@@ -362,7 +315,7 @@ public class Configuration {
 
     public BaseTaskConfig setBuffSize(int buffSize) {
       this.buffSize = buffSize;
-      saveKey("buffSize", String.valueOf(buffSize));
+      save();
       return this;
     }
   }
@@ -370,7 +323,7 @@ public class Configuration {
   /**
    * 下载配置
    */
-  public static class DownloadConfig extends BaseTaskConfig {
+  public static class DownloadConfig extends BaseTaskConfig implements Serializable {
 
     /**
      * 设置https ca 证书信息；path 为assets目录下的CA证书完整路径
@@ -381,22 +334,14 @@ public class Configuration {
      */
     String caName;
     /**
-     * 下载线程数，下载线程数不能小于1
-     * 注意：
-     * 1、线程下载数改变后，新的下载任务才会生效；
-     * 2、如果任务大小小于1m，该设置不会生效；
-     * 3、从3.4.1开始，如果线程数为1，文件初始化时将不再预占用对应长度的空间，下载多少byte，则占多大的空间；
-     * 对于采用多线程的任务或旧任务，依然采用原来的文件空间占用方式；
+     * 下载线程数，下载线程数不能小于1 注意： 1、线程下载数改变后，新的下载任务才会生效； 2、如果任务大小小于1m，该设置不会生效；
+     * 3、从3.4.1开始，如果线程数为1，文件初始化时将不再预占用对应长度的空间，下载多少byte，则占多大的空间； 对于采用多线程的任务或旧任务，依然采用原来的文件空间占用方式；
      */
     int threadNum = 3;
 
     /**
-     * 多线程下载是否使用块下载模式，{@code true}使用，{@code false}不使用
-     * 注意：
-     * 1、使用分块模式，在读写性能底下的手机上，合并文件需要的时间会更加长；
-     * 2、优点是使用多线程的块下载，初始化时，文件初始化时将不会预占用对应长度的空间；
-     * 3、只对新的多线程下载任务有效
-     * 4、只对多线程的任务有效
+     * 多线程下载是否使用块下载模式，{@code true}使用，{@code false}不使用 注意： 1、使用分块模式，在读写性能底下的手机上，合并文件需要的时间会更加长；
+     * 2、优点是使用多线程的块下载，初始化时，文件初始化时将不会预占用对应长度的空间； 3、只对新的多线程下载任务有效 4、只对多线程的任务有效
      */
     boolean useBlock = false;
 
@@ -413,21 +358,21 @@ public class Configuration {
 
     public DownloadConfig setUseBlock(boolean useBlock) {
       this.useBlock = useBlock;
-      saveKey("useBlock", String.valueOf(useBlock));
+      save();
       return this;
     }
 
     public DownloadConfig setMaxTaskNum(int maxTaskNum) {
       oldMaxTaskNum = this.maxTaskNum;
       this.maxTaskNum = maxTaskNum;
-      saveKey("maxTaskNum", String.valueOf(maxTaskNum));
       DownloadTaskQueue.getInstance().setMaxTaskNum(maxTaskNum);
+      save();
       return this;
     }
 
     public DownloadConfig setThreadNum(int threadNum) {
       this.threadNum = threadNum;
-      saveKey("threadNum", String.valueOf(threadNum));
+      save();
       return this;
     }
 
@@ -437,7 +382,7 @@ public class Configuration {
 
     public DownloadConfig setCaPath(String caPath) {
       this.caPath = caPath;
-      saveKey("caPath", caPath);
+      save();
       return this;
     }
 
@@ -447,7 +392,7 @@ public class Configuration {
 
     public DownloadConfig setCaName(String caName) {
       this.caName = caName;
-      saveKey("caName", caName);
+      save();
       return this;
     }
 
@@ -456,18 +401,6 @@ public class Configuration {
     }
 
     private DownloadConfig() {
-      loadConfig();
-    }
-
-    private static DownloadConfig INSTANCE = null;
-
-    static DownloadConfig getInstance() {
-      if (INSTANCE == null) {
-        synchronized (DownloadConfig.class) {
-          INSTANCE = new DownloadConfig();
-        }
-      }
-      return INSTANCE;
     }
 
     @Override int getType() {
@@ -478,11 +411,11 @@ public class Configuration {
   /**
    * 上传配置
    */
-  public static class UploadConfig extends BaseTaskConfig {
+  public static class UploadConfig extends BaseTaskConfig implements Serializable {
     private static UploadConfig INSTANCE = null;
 
     private UploadConfig() {
-      loadConfig();
+      //loadConfig();
     }
 
     @Override public UploadConfig setMaxSpeed(int maxSpeed) {
@@ -494,8 +427,8 @@ public class Configuration {
     public UploadConfig setMaxTaskNum(int maxTaskNum) {
       oldMaxTaskNum = this.maxTaskNum;
       this.maxTaskNum = maxTaskNum;
-      saveKey("maxTaskNum", String.valueOf(maxTaskNum));
       UploadTaskQueue.getInstance().setMaxTaskNum(maxTaskNum);
+      save();
       return this;
     }
 
@@ -517,10 +450,8 @@ public class Configuration {
    * 应用配置
    */
   public static class AppConfig extends BaseConfig {
-    private static AppConfig INSTANCE = null;
     /**
-     * 是否使用{@link AriaCrashHandler}来捕获异常
-     * {@code true} 使用；{@code false} 不使用
+     * 是否使用{@link AriaCrashHandler}来捕获异常 {@code true} 使用；{@code false} 不使用
      */
     boolean useAriaCrashHandler;
 
@@ -531,23 +462,13 @@ public class Configuration {
      */
     int logLevel;
 
-    AppConfig() {
-      loadConfig();
-    }
-
-    static AppConfig getInstance() {
-      if (INSTANCE == null) {
-        synchronized (AppConfig.class) {
-          INSTANCE = new AppConfig();
-        }
-      }
-      return INSTANCE;
+    private AppConfig() {
     }
 
     public AppConfig setLogLevel(int level) {
       this.logLevel = level;
       ALog.LOG_LEVEL = level;
-      saveKey("logLevel", String.valueOf(logLevel));
+      save();
       return this;
     }
 
@@ -561,12 +482,12 @@ public class Configuration {
 
     public AppConfig setUseAriaCrashHandler(boolean useAriaCrashHandler) {
       this.useAriaCrashHandler = useAriaCrashHandler;
-      saveKey("useAriaCrashHandler", String.valueOf(useAriaCrashHandler));
       if (useAriaCrashHandler) {
         Thread.setDefaultUncaughtExceptionHandler(new AriaCrashHandler());
       } else {
         Thread.setDefaultUncaughtExceptionHandler(null);
       }
+      save();
       return this;
     }