diff --git a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
index 27872faa1..b698f0e5f 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
@@ -71,6 +71,8 @@ open class WebDav(
                   <resourcetype />
                </prop>
             </propfind>"""
+
+        private const val DEFAULT_CONTENT_TYPE = "application/octet-stream"
     }
 
 
@@ -304,18 +306,12 @@ open class WebDav(
      * 上传文件
      */
     @Throws(WebDavException::class)
-    suspend fun upload(
-        localPath: String,
-        contentType: String = "application/octet-stream"
-    ) {
+    suspend fun upload(localPath: String, contentType: String = DEFAULT_CONTENT_TYPE) {
         upload(File(localPath), contentType)
     }
 
     @Throws(WebDavException::class)
-    suspend fun upload(
-        file: File,
-        contentType: String = "application/octet-stream"
-    ) {
+    suspend fun upload(file: File, contentType: String = DEFAULT_CONTENT_TYPE) {
         kotlin.runCatching {
             withContext(IO) {
                 if (!file.exists()) throw WebDavException("文件不存在")
@@ -336,7 +332,7 @@ open class WebDav(
     }
 
     @Throws(WebDavException::class)
-    suspend fun upload(byteArray: ByteArray, contentType: String) {
+    suspend fun upload(byteArray: ByteArray, contentType: String = DEFAULT_CONTENT_TYPE) {
         // 务必注意RequestBody不要嵌套，不然上传时内容可能会被追加多余的文件信息
         kotlin.runCatching {
             withContext(IO) {
@@ -356,7 +352,7 @@ open class WebDav(
     }
 
     @Throws(WebDavException::class)
-    suspend fun upload(uri: Uri, contentType: String) {
+    suspend fun upload(uri: Uri, contentType: String = DEFAULT_CONTENT_TYPE) {
         // 务必注意RequestBody不要嵌套，不然上传时内容可能会被追加多余的文件信息
         kotlin.runCatching {
             withContext(IO) {
diff --git a/app/src/main/java/io/legado/app/model/remote/RemoteBookWebDav.kt b/app/src/main/java/io/legado/app/model/remote/RemoteBookWebDav.kt
index 8fa7d0223..74f147b3e 100644
--- a/app/src/main/java/io/legado/app/model/remote/RemoteBookWebDav.kt
+++ b/app/src/main/java/io/legado/app/model/remote/RemoteBookWebDav.kt
@@ -14,10 +14,7 @@ import io.legado.app.model.analyzeRule.CustomUrl
 import io.legado.app.model.localBook.LocalBook
 import io.legado.app.utils.NetworkUtils
 import io.legado.app.utils.isContentScheme
-import io.legado.app.utils.readBytes
 import kotlinx.coroutines.runBlocking
-import splitties.init.appCtx
-import java.io.File
 
 class RemoteBookWebDav(
     val rootBookUrl: String,
@@ -71,20 +68,17 @@ class RemoteBookWebDav(
     override suspend fun upload(book: Book) {
         if (!NetworkUtils.isAvailable()) throw NoStackTraceException("网络不可用")
         val localBookUri = Uri.parse(book.bookUrl)
-        val putUrl = "$rootBookUrl${File.separator}${book.originName}"
+        val putUrl = "$rootBookUrl${book.originName}"
         val webDav = WebDav(putUrl, authorization)
         if (localBookUri.isContentScheme()) {
-            webDav.upload(
-                byteArray = localBookUri.readBytes(appCtx),
-                contentType = "application/octet-stream"
-            )
+            webDav.upload(localBookUri)
         } else {
             webDav.upload(localBookUri.path!!)
         }
         book.origin = BookType.webDavTag + CustomUrl(putUrl)
             .putAttribute("serverID", serverID)
             .toString()
-        book.save()
+        book.update()
     }
 
     override suspend fun delete(remoteBookUrl: String) {
diff --git a/app/src/main/java/io/legado/app/ui/book/import/remote/RemoteBookViewModel.kt b/app/src/main/java/io/legado/app/ui/book/import/remote/RemoteBookViewModel.kt
index b670934d7..b2c5c949d 100644
--- a/app/src/main/java/io/legado/app/ui/book/import/remote/RemoteBookViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/import/remote/RemoteBookViewModel.kt
@@ -20,7 +20,7 @@ import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
-import java.util.*
+import java.util.Collections
 
 class RemoteBookViewModel(application: Application) : BaseViewModel(application) {
     var sortKey = RemoteBookSort.Default
@@ -78,6 +78,7 @@ class RemoteBookViewModel(application: Application) : BaseViewModel(application)
                 }
                 return@sortedWith compare
             }
+
             else -> list.sortedWith { o1, o2 ->
                 val compare = -compareValues(o1.isDir, o2.isDir)
                 if (compare == 0) {
@@ -132,10 +133,8 @@ class RemoteBookViewModel(application: Application) : BaseViewModel(application)
                 val downloadBookUri = bookWebDav.downloadRemoteBook(remoteBook)
                 LocalBook.importFiles(downloadBookUri).forEach { book ->
                     book.origin = BookType.webDavTag + CustomUrl(remoteBook.path)
-                        .putAttribute(
-                            "serverID",
-                            bookWebDav.serverID
-                        ).toString()
+                        .putAttribute("serverID", bookWebDav.serverID)
+                        .toString()
                     book.save()
                 }
                 remoteBook.isOnBookShelf = true
@@ -152,7 +151,7 @@ class RemoteBookViewModel(application: Application) : BaseViewModel(application)
     }
 
     fun updateCallBackFlow(filterKey: String?) {
-       dataCallback?.screen(filterKey)
+        dataCallback?.screen(filterKey)
     }
 
     interface DataCallback {