添加重置状态的api，当下载信息不改变，只是替换了服务器的对应的文件，可用`Aria.download(this).load(url).resetState()`重置下载状态

Aria/src/main/java/com/arialyy/aria/core/download/DownloadGroupTarget.java

@@ -15,6 +15,7 @@
  */
 package com.arialyy.aria.core.download;
 
+import com.arialyy.aria.core.inf.IEntity;
 import com.arialyy.aria.core.manager.TEManager;
 import com.arialyy.aria.core.queue.DownloadGroupTaskQueue;
 import com.arialyy.aria.util.ALog;
@@ -36,8 +37,7 @@ public class DownloadGroupTarget
       this.mUrls.addAll(groupEntity.getUrls());
     }
     mGroupName = CommonUtil.getMd5Code(groupEntity.getUrls());
-    mTaskEntity = TEManager.getInstance()
+    mTaskEntity = TEManager.getInstance().getTEntity(DownloadGroupTaskEntity.class, mGroupName);
-        .getTEntity(DownloadGroupTaskEntity.class, mGroupName);
     if (mTaskEntity == null) {
       mTaskEntity =
           TEManager.getInstance().createTEntity(DownloadGroupTaskEntity.class, groupEntity);

Aria/src/main/java/com/arialyy/aria/core/download/DownloadReceiver.java

@@ -84,7 +84,7 @@ public class DownloadReceiver extends AbsReceiver {
    * 加载Http、https单任务下载地址
    *
    * @param url 下载地址
-   * @param refreshInfo 是否刷新下载信息
+   * @param refreshInfo 是否刷新下载信息，当下载地址改变而保存路径不变，则需要设置该参数为{@code true}
    */
   public DownloadTarget load(@NonNull String url, boolean refreshInfo) {
     CheckUtil.checkUrl(url);
@@ -111,7 +111,7 @@ public class DownloadReceiver extends AbsReceiver {
   /**
    * 使用下载实体执行下载操作
    *
-   * @param refreshInfo 是否刷新下载信息
+   * @param refreshInfo 是否刷新下载信息，当下载地址改变而保存路径不变，则需要设置该参数为{@code true}
    */
   public FtpDownloadTarget loadFtp(DownloadEntity entity, boolean refreshInfo) {
     CheckUtil.checkDownloadEntity(entity);

Aria/src/main/java/com/arialyy/aria/core/download/downloader/DownloadGroupUtil.java

@@ -21,6 +21,7 @@ import com.arialyy.aria.core.common.OnFileInfoCallback;
 import com.arialyy.aria.core.download.DownloadGroupTaskEntity;
 import com.arialyy.aria.core.download.DownloadTaskEntity;
 import com.arialyy.aria.core.inf.IEntity;
+import com.arialyy.aria.util.ALog;
 import java.util.Set;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -63,6 +64,11 @@ public class DownloadGroupUtil extends AbsGroupUtil implements IUtil {
 
   @Override protected void onStart() {
     super.onStart();
+    if (mExeMap.size() == 0){
+      ALog.e(TAG, "任务组无可执行任务");
+      mListener.onFail(false);
+      return;
+    }
     Set<String> keys = mExeMap.keySet();
     int i = 0;
     for (String key : keys) {

Aria/src/main/java/com/arialyy/aria/core/inf/AbsGroupTask.java

@@ -27,7 +27,7 @@ public abstract class AbsGroupTask<TASK_ENTITY extends AbsGroupTaskEntity>
   protected AbsGroupUtil mUtil;
 
   @Override public String getKey() {
-    return mTaskEntity.getEntity().getGroupName();
+    return mTaskEntity.getEntity().getKey();
   }
 
   /**

Aria/src/main/java/com/arialyy/aria/core/inf/AbsTarget.java

@@ -42,6 +42,15 @@ public abstract class AbsTarget<TARGET extends AbsTarget, ENTITY extends AbsEnti
   protected TASK_ENTITY mTaskEntity;
   protected String mTargetName;
 
+  /**
+   * 重置下载状态，将任务状态设置为未开始状态
+   */
+  public TARGET resetState() {
+    mTaskEntity.getEntity().setState(IEntity.STATE_WAIT);
+    mTaskEntity.update();
+    return (TARGET) this;
+  }
+
   /**
    * 删除记录，如果任务正在执行，则会删除正在下载的任务
    */

Aria/src/main/java/com/arialyy/aria/core/manager/TEManager.java

@@ -184,6 +184,7 @@ public class TEManager {
 
   /**
    * 通过key删除任务实体
+   * 当任务complete或删除记录时将删除缓存
    */
   public AbsTaskEntity removeTEntity(String key) {
     final Lock lock = this.lock;

Aria/src/main/java/com/arialyy/aria/orm/SqlHelper.java

@@ -332,8 +332,9 @@ final class SqlHelper extends SQLiteOpenHelper {
     List<Field> fields = CommonUtil.getAllFields(clazz);
     DbEntity cacheEntity = mDataCache.get(dbEntity.hashCode());
     if (fields != null && fields.size() > 0) {
-      StringBuilder sb = new StringBuilder();
+      StringBuilder sql = new StringBuilder();
-      sb.append("UPDATE ").append(CommonUtil.getClassName(dbEntity)).append(" SET ");
+      StringBuilder prams = new StringBuilder();
+      sql.append("UPDATE ").append(CommonUtil.getClassName(dbEntity)).append(" SET ");
       int i = 0;
       for (Field field : fields) {
         field.setAccessible(true);
@@ -345,9 +346,11 @@ final class SqlHelper extends SQLiteOpenHelper {
             continue;
           }
 
-          sb.append(i > 0 ? ", " : "");
+          //sb.append(i > 0 ? ", " : "");
+          //sb.append(field.getName()).append("='");
           String value;
-          sb.append(field.getName()).append("='");
+          prams.append(i > 0 ? ", " : "");
+          prams.append(field.getName()).append("='");
           Type type = field.getType();
           if (type == Map.class) {
             value = SqlUtil.map2Str((Map<String, String>) field.get(dbEntity));
@@ -364,16 +367,21 @@ final class SqlHelper extends SQLiteOpenHelper {
             value = obj == null ? "" : obj.toString();
           }
 
-          sb.append(value == null ? "" : value);
+          //sb.append(value == null ? "" : value);
-          sb.append("'");
+          //sb.append("'");
+          prams.append(TextUtils.isEmpty(value) ? "" : value);
+          prams.append("'");
         } catch (IllegalAccessException e) {
           e.printStackTrace();
         }
         i++;
       }
-      sb.append(" where rowid=").append(dbEntity.rowID);
+      if (!TextUtils.isEmpty(prams.toString())) {
-      print(MODIFY_DATA, sb.toString());
+        sql.append(prams.toString());
-      db.execSQL(sb.toString());
+        sql.append(" where rowid=").append(dbEntity.rowID);
+        print(MODIFY_DATA, sql.toString());
+        db.execSQL(sql.toString());
+      }
     }
     close(db);
   }

DEV_LOG.md

@@ -1,4 +1,7 @@
 ## 开发日志
+  + v_3.3.10
+    - 修复地址切换导致下载失败的问题 https://github.com/AriaLyy/Aria/issues/181
+    - 添加重置状态的api，当下载信息不改变，只是替换了服务器的对应的文件，可用`Aria.download(this).load(url).resetState()`重置下载状态 https://github.com/AriaLyy/Aria/issues/182
   + v_3.3.9
     - 添加POST支持
     - 任务执行的过程中，如果调用removeRecord()方法，将会取消任务 https://github.com/AriaLyy/Aria/issues/174

app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java

@@ -61,8 +61,8 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
   //"http://down8.androidgame-store.com/201706122321/97967927DD4E53D9905ECAA7874C8128/new/game1/19/45319/com.neuralprisma-2.5.2.174-2000174_1494784835.apk?f=web_1";
   //不支持断点的链接
   //"http://ox.konsung.net:5555/ksdc-web/download/downloadFile/?fileName=ksdc_1.0.2.apk&rRange=0-";
-  //"http://gdown.baidu.com/data/wisegame/0904344dee4a2d92/QQ_718.apk";
+  "http://gdown.baidu.com/data/wisegame/0904344dee4a2d92/QQ_718.apk";
-  "http://qudao.5535.cn/one/game.html?game=531&cpsuser=xiaoeryu2";
+  //"http://qudao.5535.cn/one/game.html?game=531&cpsuser=xiaoeryu2";
   @Bind(R.id.start) Button mStart;
   @Bind(R.id.stop) Button mStop;
   @Bind(R.id.cancel) Button mCancel;
@@ -226,7 +226,7 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
         //.addHeader("groupName", "value")
         .addHeaders(map)
         //.setRequestMode(RequestEnum.POST)
-        .setDownloadPath(Environment.getExternalStorageDirectory().getPath() + "/ggsg.apk")
+        .setDownloadPath(Environment.getExternalStorageDirectory().getPath() + "/ggsg1.apk")
         .start();
   }
 

app/src/main/java/com/arialyy/simple/download/group/DownloadGroupActivity.java

@@ -26,6 +26,7 @@ import com.arialyy.aria.core.download.DownloadEntity;
 import com.arialyy.aria.core.download.DownloadGroupEntity;
 import com.arialyy.aria.core.download.DownloadGroupTask;
 import com.arialyy.aria.core.download.DownloadGroupTaskEntity;
+import com.arialyy.aria.core.manager.TEManager;
 import com.arialyy.frame.util.show.L;
 import com.arialyy.frame.util.show.T;
 import com.arialyy.simple.R;
@@ -66,6 +67,7 @@ public class DownloadGroupActivity extends BaseActivity<ActivityDownloadGroupBin
       }
     });
 
+
   }
 
   private void showPopupWindow(int position) {
@@ -94,7 +96,16 @@ public class DownloadGroupActivity extends BaseActivity<ActivityDownloadGroupBin
         Aria.download(this).load(mUrls).stop();
         break;
       case R.id.cancel:
-        Aria.download(this).load(mUrls).cancel(true);
+        //Aria.download(this).load(mUrls).cancel(true);
+        mUrls = getModule(GroupModule.class).getUrls1();
+        Aria.download(this)
+            .load(mUrls)
+            .setDownloadDirPath(
+                Environment.getExternalStorageDirectory().getPath() + "/Download/group_test_3")
+            .setGroupAlias("任务组测试")
+            .setSubFileName(getModule(GroupModule.class).getSubName())
+            //.setFileSize(32895492)
+            .start();
         break;
     }
   }

app/src/main/java/com/arialyy/simple/download/group/GroupModule.java

@@ -31,6 +31,13 @@ public class GroupModule extends BaseModule {
   }
 
   List<String> getUrls() {
+    List<String> urls = new ArrayList<>();
+    String[] str = getContext().getResources().getStringArray(R.array.group_urls_1);
+    Collections.addAll(urls, str);
+    return urls;
+  }
+
+  List<String> getUrls1() {
     List<String> urls = new ArrayList<>();
     String[] str = getContext().getResources().getStringArray(R.array.group_urls);
     Collections.addAll(urls, str);

app/src/main/res/values/strings.xml

@@ -58,7 +58,7 @@
   <string-array name="group_urls">
     <!--<item>https://res5.d.cn/5a6a3384c1b2be1a65d84b914e6a6fef697637578b6db2eb1056d50b09cf1dcf289d4045df7ef95746e498e3d6a848ab84c89b77aa60194e2c48e5a7cb748265.apk</item>-->
     <!--<item>https://res5.d.cn/5a6a3384c1b2be1a52034c72752e8475414630ebc69318b84ef584115ebf5eaaab945ae07b7fe3596afc72a7940ff328d4a9553f6ae92d6c09ba4bfb533137f6.apk</item>-->
-    <item>https://res5.d.cn/5a6a3384c1b2be1a426f06bfc69034d69c44ae1a01da180cab8e59bd1a5e1a784bac46ba0c64579d14f0e80a4ce4f068af89b0369a393456f4f449a8829cad5c.apk</item>
+    <!--<item>https://res5.d.cn/5a6a3384c1b2be1a426f06bfc69034d69c44ae1a01da180cab8e59bd1a5e1a784bac46ba0c64579d14f0e80a4ce4f068af89b0369a393456f4f449a8829cad5c.apk</item>-->
     <item>http://static.gaoshouyou.com/d/12/0d/7f120f50c80d2e7b8c4ba24ece4f9cdd.apk</item>
     <item>http://static.ilongyuan.cn/rayark/RayarkFZ_2.0.7.apk</item>
   </string-array>
@@ -79,7 +79,7 @@
   </string-array>
 
   <string-array name="group_names">
-    <item>王者荣耀.apk</item>
+    <!--<item>王者荣耀.apk</item>-->
     <item>战斗吧剑灵.apk</item>
     <item>天魔幻想.apk</item>
   </string-array>

build.gradle

@@ -39,7 +39,7 @@ task clean(type: Delete) {
 ext {
   userOrg = 'arialyy'
   groupId = 'com.arialyy.aria'
-  publishVersion = '3.3.9'
+  publishVersion = '3.3.10'
 //  publishVersion = '1.0.3'  //FTP插件
   repoName='maven'
   desc = 'android 下载框架'