diff --git a/Aria/src/main/java/com/arialyy/aria/core/command/normal/AbsNormalCmd.java b/Aria/src/main/java/com/arialyy/aria/core/command/normal/AbsNormalCmd.java
index e690524d..675a918a 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/command/normal/AbsNormalCmd.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/command/normal/AbsNormalCmd.java
@@ -17,8 +17,10 @@
 package com.arialyy.aria.core.command.normal;
 
 import com.arialyy.aria.core.command.AbsCmd;
+import com.arialyy.aria.core.download.DownloadGroupTaskEntity;
 import com.arialyy.aria.core.download.DownloadTaskEntity;
 import com.arialyy.aria.core.inf.AbsTaskEntity;
+import com.arialyy.aria.core.queue.DownloadGroupTaskQueue;
 import com.arialyy.aria.core.queue.DownloadTaskQueue;
 import com.arialyy.aria.core.queue.UploadTaskQueue;
 import com.arialyy.aria.core.upload.UploadTaskEntity;
@@ -40,8 +42,8 @@ public abstract class AbsNormalCmd<T extends AbsTaskEntity> extends AbsCmd<T> {
    * @param targetName 产生任务的对象名
    */
   AbsNormalCmd(String targetName, T entity) {
-    canExeCmd = CheckUtil.checkCmdEntity(entity,
-        !(this instanceof CancelCmd) || !(this instanceof StopCmd));
+    //canExeCmd = CheckUtil.checkCmdEntity(entity,
+    //    !(this instanceof CancelCmd) || !(this instanceof StopCmd));
     mTargetName = targetName;
     mTaskEntity = entity;
     TAG = CommonUtil.getClassName(this);
@@ -51,6 +53,9 @@ public abstract class AbsNormalCmd<T extends AbsTaskEntity> extends AbsCmd<T> {
     } else if (entity instanceof UploadTaskEntity) {
       mQueue = UploadTaskQueue.getInstance();
       isDownloadCmd = false;
+    } else if (entity instanceof DownloadGroupTaskEntity) {
+      mQueue = DownloadGroupTaskQueue.getInstance();
+      isDownloadCmd = true;
     }
   }
 }
\ No newline at end of file
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupEntity.java b/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupEntity.java
index 42c9040c..ff0b683a 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupEntity.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupEntity.java
@@ -19,7 +19,6 @@ import android.os.Parcel;
 import com.arialyy.aria.core.inf.AbsGroupEntity;
 import com.arialyy.aria.orm.OneToMany;
 import java.util.ArrayList;
-import java.util.LinkedList;
 import java.util.List;
 
 /**
@@ -28,26 +27,25 @@ import java.util.List;
  */
 public class DownloadGroupEntity extends AbsGroupEntity {
 
-  @OneToMany(table = DownloadEntity.class, key = "groupName") private List<DownloadEntity>
-      mSubtask = new ArrayList<>();
+  @OneToMany(table = DownloadEntity.class, key = "groupName") private List<DownloadEntity> subtask = new ArrayList<>();
 
   //任务组下载文件的文件夹地址
-  private String mDirPath = "";
+  private String dirPath = "";
 
   public List<DownloadEntity> getSubTask() {
-    return mSubtask;
+    return subtask;
   }
 
   public void setSubTasks(List<DownloadEntity> subTasks) {
-    this.mSubtask = subTasks;
+    this.subtask = subTasks;
   }
 
   public String getDirPath() {
-    return mDirPath;
+    return dirPath;
   }
 
   public void setDirPath(String dirPath) {
-    this.mDirPath = dirPath;
+    this.dirPath = dirPath;
   }
 
   public DownloadGroupEntity() {
@@ -59,14 +57,14 @@ public class DownloadGroupEntity extends AbsGroupEntity {
 
   @Override public void writeToParcel(Parcel dest, int flags) {
     super.writeToParcel(dest, flags);
-    dest.writeTypedList(this.mSubtask);
-    dest.writeString(this.mDirPath);
+    dest.writeTypedList(this.subtask);
+    dest.writeString(this.dirPath);
   }
 
   protected DownloadGroupEntity(Parcel in) {
     super(in);
-    this.mSubtask = in.createTypedArrayList(DownloadEntity.CREATOR);
-    this.mDirPath = in.readString();
+    this.subtask = in.createTypedArrayList(DownloadEntity.CREATOR);
+    this.dirPath = in.readString();
   }
 
   public static final Creator<DownloadGroupEntity> CREATOR = new Creator<DownloadGroupEntity>() {
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTarget.java b/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTarget.java
index 11a03da7..01068408 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTarget.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTarget.java
@@ -50,7 +50,8 @@ public class DownloadGroupTarget
     if (mTaskEntity == null) {
       mTaskEntity = new DownloadGroupTaskEntity();
       mTaskEntity.key = mGroupName;
-      mTaskEntity.entity = new DownloadGroupEntity();
+      mTaskEntity.entity = getDownloadGroupEntity();
+      mTaskEntity.insert();
     }
     if (mTaskEntity.entity == null) {
       mTaskEntity.entity = getDownloadGroupEntity();
@@ -63,6 +64,9 @@ public class DownloadGroupTarget
         DbEntity.findFirst(DownloadGroupEntity.class, "groupName=?", mGroupName);
     if (entity == null) {
       entity = new DownloadGroupEntity();
+      entity.setGroupName(mGroupName);
+      entity.setUrlmd5(mGroupName);
+      entity.insert();
     }
     return entity;
   }
@@ -101,12 +105,12 @@ public class DownloadGroupTarget
       file.mkdirs();
     }
 
+    mEntity.setDirPath(groupDirPath);
     if (!TextUtils.isEmpty(mEntity.getDirPath())) {
       reChangeDirPath(groupDirPath);
     } else {
       mEntity.setSubTasks(createSubTask());
     }
-    mEntity.setDirPath(groupDirPath);
     mEntity.update();
     isSetDirPathed = true;
     return this;
@@ -157,15 +161,26 @@ public class DownloadGroupTarget
     for (int i = 0, len = mUrls.size(); i < len; i++) {
       DownloadEntity entity = new DownloadEntity();
       entity.setDownloadUrl(mUrls.get(i));
-      String fileName = mSubtaskFileName.get(i);
-      if (TextUtils.isEmpty(fileName)) {
-        fileName = CommonUtil.keyToHashKey(mUrls.get(i));
-      }
+      String fileName = mSubtaskFileName.isEmpty() ? CommonUtil.keyToHashKey(mUrls.get(i))
+          : mSubtaskFileName.get(i);
       entity.setDownloadPath(mEntity.getDirPath() + "/" + fileName);
       entity.setGroupName(mGroupName);
-      entity.save();
+      entity.setGroupChild(true);
+      entity.setFileName(fileName);
+      entity.insert();
       list.add(entity);
     }
     return list;
   }
+
+  ///**
+  // * 创建文件名，如果url链接有后缀名，则使用url中的后缀名
+  // * @return url 的 hashKey
+  // */
+  //private String createFileName(String url){
+  //  if (url.contains(".")){
+  //    int s = url.lastIndexOf(".");
+  //    String fileName = url.substring()
+  //  }
+  //}
 }
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTask.java b/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTask.java
index 9c3d778e..0307a31a 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTask.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTask.java
@@ -51,7 +51,7 @@ public class DownloadGroupTask extends AbsGroupTask<DownloadGroupTaskEntity, Dow
   }
 
   @Override public void start() {
-    mUtil.stopDownload();
+    mUtil.startDownload();
   }
 
   @Override public void stop() {
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/downloader/FileInfoThread.java b/Aria/src/main/java/com/arialyy/aria/core/download/downloader/FileInfoThread.java
index d47a1d3b..0cf0bea8 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/downloader/FileInfoThread.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/downloader/FileInfoThread.java
@@ -15,6 +15,7 @@
  */
 package com.arialyy.aria.core.download.downloader;
 
+import android.text.TextUtils;
 import android.util.Log;
 import com.arialyy.aria.core.AriaManager;
 import com.arialyy.aria.core.download.DownloadEntity;
@@ -117,8 +118,8 @@ class FileInfoThread implements Runnable {
       if (onFileInfoListener != null) {
         onFileInfoListener.onComplete(mEntity.getDownloadUrl(), code);
       }
-      mEntity.save();
-      mTaskEntity.save();
+      mEntity.update();
+      mTaskEntity.update();
     }
   }
 
@@ -127,7 +128,13 @@ class FileInfoThread implements Runnable {
    */
   private void handle302Turn(HttpURLConnection conn) throws IOException {
     String newUrl = conn.getHeaderField(mTaskEntity.redirectUrlKey);
-    Log.d(TAG, "30x跳转，新url为【" + newUrl + "】");
+    Log.d(TAG, "30x跳转，location【 " + mTaskEntity.redirectUrlKey + "】" + "新url为【" + newUrl + "】");
+    if (TextUtils.isEmpty(newUrl) || newUrl.equalsIgnoreCase("null")) {
+      if (onFileInfoListener != null) {
+        onFileInfoListener.onFail(mEntity.getDownloadUrl(), "获取重定向链接失败");
+      }
+      return;
+    }
     String cookies = conn.getHeaderField("Set-Cookie");
     conn = (HttpURLConnection) new URL(newUrl).openConnection();
     conn = ConnectionHelp.setConnectParam(mTaskEntity, conn);
diff --git a/Aria/src/main/java/com/arialyy/aria/orm/DBConfig.java b/Aria/src/main/java/com/arialyy/aria/orm/DBConfig.java
index ec9f92eb..3e09d360 100644
--- a/Aria/src/main/java/com/arialyy/aria/orm/DBConfig.java
+++ b/Aria/src/main/java/com/arialyy/aria/orm/DBConfig.java
@@ -32,7 +32,7 @@ import java.util.Map;
 public class DBConfig {
   static Map<String, Class> mapping = new HashMap<>();
   static String DB_NAME;
-  static int VERSION = 6;
+  static int VERSION = 7;
 
   static {
     if (TextUtils.isEmpty(DB_NAME)) {
diff --git a/Aria/src/main/java/com/arialyy/aria/orm/DbEntity.java b/Aria/src/main/java/com/arialyy/aria/orm/DbEntity.java
index a909b218..c8636c8c 100644
--- a/Aria/src/main/java/com/arialyy/aria/orm/DbEntity.java
+++ b/Aria/src/main/java/com/arialyy/aria/orm/DbEntity.java
@@ -125,7 +125,7 @@ public class DbEntity {
    */
   public void save() {
     synchronized (LOCK) {
-      if (DbUtil.getInstance().tableExists(getClass()) && thisIsExist()) {
+      if (thisIsExist()) {
         update();
       } else {
         insert();
diff --git a/Aria/src/main/java/com/arialyy/aria/orm/SqlHelper.java b/Aria/src/main/java/com/arialyy/aria/orm/SqlHelper.java
index 65c4a961..988359c8 100644
--- a/Aria/src/main/java/com/arialyy/aria/orm/SqlHelper.java
+++ b/Aria/src/main/java/com/arialyy/aria/orm/SqlHelper.java
@@ -373,6 +373,14 @@ final class SqlHelper extends SQLiteOpenHelper {
     close(db);
   }
 
+  /**
+   * 保存一对一的数据
+   * @param field
+   */
+  private void saveOneToOneFile(Field field){
+
+  }
+
   /**
    * 获取一对一参数
    */
@@ -602,7 +610,7 @@ final class SqlHelper extends SQLiteOpenHelper {
               if (TextUtils.isEmpty(primaryData)) continue;
               List<T> list = findForeignData(db, primaryData, params);
               if (list == null) continue;
-              field.set(entity, findForeignData(db, primaryKey, params));
+              field.set(entity, findForeignData(db, primaryData, params));
             } else if (isOneToOne(field)) {
               String primaryKey = getPrimaryName(clazz);
               if (TextUtils.isEmpty(primaryKey)) {
diff --git a/app/src/main/java/com/arialyy/simple/MainActivity.java b/app/src/main/java/com/arialyy/simple/MainActivity.java
index 92a733e0..5867a402 100644
--- a/app/src/main/java/com/arialyy/simple/MainActivity.java
+++ b/app/src/main/java/com/arialyy/simple/MainActivity.java
@@ -23,6 +23,7 @@ import butterknife.OnClick;
 import com.arialyy.simple.base.BaseActivity;
 import com.arialyy.simple.databinding.ActivityMainBinding;
 import com.arialyy.simple.download.DownloadActivity;
+import com.arialyy.simple.download.group.DownloadGroupActivity;
 import com.arialyy.simple.test.TestMutilTaskSysDownload;
 import com.arialyy.simple.upload.UploadActivity;
 
@@ -53,7 +54,7 @@ public class MainActivity extends BaseActivity<ActivityMainBinding> {
         startActivity(new Intent(this, UploadActivity.class));
         break;
       case R.id.download_task_group:
-
+        startActivity(new Intent(this, DownloadGroupActivity.class));
         break;
     }
 
diff --git a/app/src/main/java/com/arialyy/simple/download/group/DownloadGroupActivity.java b/app/src/main/java/com/arialyy/simple/download/group/DownloadGroupActivity.java
index b5968f45..e7666bc2 100644
--- a/app/src/main/java/com/arialyy/simple/download/group/DownloadGroupActivity.java
+++ b/app/src/main/java/com/arialyy/simple/download/group/DownloadGroupActivity.java
@@ -61,26 +61,25 @@ public class DownloadGroupActivity extends BaseActivity<ActivityDownloadGroupBin
     //});
   }
 
-  //public void onClick(View view) {
-  //  switch (view.getId()) {
-  //    case R.id.start:
-  //      String text = ((TextView) view).getText().toString();
-  //      if (text.equals("重新开始？") || text.equals("开始")) {
-  //        Aria.download(this)
-  //            .load(mUrls)
-  //            .setDownloadPaths()
-  //            .setDownloadPath(Environment.getExternalStorageDirectory().getPath() + "/test.apk")
-  //            .start();
-  //      } else if (text.equals("恢复")) {
-  //        Aria.download(this).load(DOWNLOAD_URL).resume();
-  //      }
-  //      break;
-  //    case R.id.stop:
-  //      Aria.download(this).load(DOWNLOAD_URL).pause();
-  //      break;
-  //    case R.id.cancel:
-  //      Aria.download(this).load(DOWNLOAD_URL).cancel();
-  //      break;
-  //  }
-  //}
+  public void onClick(View view) {
+    switch (view.getId()) {
+      case R.id.start:
+        String text = ((TextView) view).getText().toString();
+        if (text.equals("重新开始？") || text.equals("开始")) {
+          Aria.download(this)
+              .load(mUrls)
+              .setDownloadDirPath(Environment.getExternalStorageDirectory().getPath() + "/group_test")
+              .start();
+        } else if (text.equals("恢复")) {
+          //Aria.download(this).load(DOWNLOAD_URL).resume();
+        }
+        break;
+      case R.id.stop:
+        //Aria.download(this).load(DOWNLOAD_URL).pause();
+        break;
+      case R.id.cancel:
+        //Aria.download(this).load(DOWNLOAD_URL).cancel();
+        break;
+    }
+  }
 }