优化

app/src/main/java/io/legado/app/lib/webdav/WebDav.kt

@@ -62,12 +62,14 @@ open class WebDav(val path: String, val authorization: Authorization) {
 
     private val url: URL = URL(path)
     private val httpUrl: String? by lazy {
-        val raw = url.toString().replace("davs://", "https://").replace("dav://", "http://")
+        val raw = url.toString()
+            .replace("davs://", "https://")
+            .replace("dav://", "http://")
         return@lazy kotlin.runCatching {
             URLEncoder.encode(raw, "UTF-8")
-                .replace("\\+".toRegex(), "%20")
-                .replace("%3A".toRegex(), ":")
-                .replace("%2F".toRegex(), "/")
+                .replace("+", "%20")
+                .replace("%3A", ":")
+                .replace("%2F", "/")
         }.getOrNull()
     }
     private val webDavClient by lazy {
@@ -348,8 +350,18 @@ open class WebDav(val path: String, val authorization: Authorization) {
      */
     private fun checkResult(response: Response) {
         if (!response.isSuccessful) {
+            val body = response.body?.string()
+            if (response.message.isNotBlank() || body.isNullOrBlank()) {
                 throw WebDavException("${url}\n${response.code}:${response.message}")
             }
+            val document = Jsoup.parse(body)
+            val exception = document.getElementsByTag("s:exception").firstOrNull()?.text()
+            val message = document.getElementsByTag("s:message").firstOrNull()?.text()
+            if (exception == "ObjectNotFound") {
+                throw ObjectNotFoundException(message ?: "$path doesn't exist")
+            }
+            throw WebDavException(message ?: "未知错误")
+        }
     }
 
 }

app/src/main/java/io/legado/app/lib/webdav/WebDavException.kt

@@ -1,9 +1,11 @@
 package io.legado.app.lib.webdav
 
-class WebDavException(msg: String) : Exception(msg) {
+open class WebDavException(msg: String) : Exception(msg) {
 
     override fun fillInStackTrace(): Throwable {
         return this
     }
 
 }
+
+class ObjectNotFoundException(msg: String) : WebDavException(msg)

app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt

@@ -19,12 +19,14 @@ import io.legado.app.help.book.BookHelp
 import io.legado.app.help.book.getRemoteUrl
 import io.legado.app.help.book.isLocal
 import io.legado.app.help.coroutine.Coroutine
+import io.legado.app.lib.webdav.ObjectNotFoundException
 import io.legado.app.model.BookCover
 import io.legado.app.model.ReadBook
 import io.legado.app.model.analyzeRule.AnalyzeRule
 import io.legado.app.model.localBook.LocalBook
 import io.legado.app.model.remote.RemoteBookWebDav
 import io.legado.app.model.webBook.WebBook
+import io.legado.app.utils.isContentScheme
 import io.legado.app.utils.postEvent
 import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.CoroutineScope
@@ -120,12 +122,19 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
                         book.origin = BookType.localTag
                     } else if (remoteBook.lastModify > book.lastCheckTime) {
                         val uri = RemoteBookWebDav.downloadRemoteBook(remoteBook)
-
+                        book.origin = if (uri.isContentScheme()) uri.toString() else uri.path!!
                     }
                 }
             }
         }.onError {
+            when (it) {
+                is ObjectNotFoundException -> {
+                    book.origin = BookType.localTag
+                }
+                else -> {
                     AppLog.put("下载远程书籍<${book.name}>失败", it)
+                }
+            }
         }.onFinally {
             loadBookInfo(book, false)
         }