diff --git a/app/src/main/java/io/legado/app/data/entities/BookChapter.kt b/app/src/main/java/io/legado/app/data/entities/BookChapter.kt
index 4d2e1e9e3..ea97c94f8 100644
--- a/app/src/main/java/io/legado/app/data/entities/BookChapter.kt
+++ b/app/src/main/java/io/legado/app/data/entities/BookChapter.kt
@@ -63,7 +63,7 @@ data class BookChapter(
 
     fun getAbsoluteURL(): String {
         val urlArray = url.split(AnalyzeUrl.splitUrlRegex)
-        var absoluteUrl = NetworkUtils.getAbsoluteURL(baseUrl, urlArray[0])!!
+        var absoluteUrl = NetworkUtils.getAbsoluteURL(baseUrl, urlArray[0])
         if (urlArray.size > 1) {
             absoluteUrl = "$absoluteUrl,${urlArray[1]}"
         }
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
index e36750a1f..3e1f6079f 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
@@ -165,7 +165,7 @@ class AnalyzeUrl(
      */
     private fun initUrl() {
         var urlArray = ruleUrl.split(splitUrlRegex, 2)
-        url = NetworkUtils.getAbsoluteURL(baseUrl, urlArray[0])!!
+        url = NetworkUtils.getAbsoluteURL(baseUrl, urlArray[0])
         urlHasQuery = urlArray[0]
         NetworkUtils.getBaseUrl(url)?.let {
             baseUrl = it
diff --git a/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt b/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt
index 955df439b..13503e510 100644
--- a/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt
+++ b/app/src/main/java/io/legado/app/model/rss/RssParserByRule.kt
@@ -112,7 +112,7 @@ object RssParserByRule {
         rssArticle.image = analyzeRule.getString(ruleImage, true)
         Debug.log(sourceUrl, "└${rssArticle.image}", log)
         Debug.log(sourceUrl, "┌获取文章链接", log)
-        rssArticle.link = NetworkUtils.getAbsoluteURL(sourceUrl, analyzeRule.getString(ruleLink))!!
+        rssArticle.link = NetworkUtils.getAbsoluteURL(sourceUrl, analyzeRule.getString(ruleLink))
         Debug.log(sourceUrl, "└${rssArticle.link}", log)
         if (rssArticle.title.isBlank()) {
             return null
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
index d0fd4f34a..2df117411 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheViewModel.kt
@@ -109,9 +109,8 @@ class CacheViewModel(application: Application) : BaseViewModel(application) {
                 content.split("\n").forEachIndexed { index, text ->
                     val matcher = AppPattern.imgPattern.matcher(text)
                     if (matcher.find()) {
-                        var src = matcher.group(1)
-                        src = NetworkUtils.getAbsoluteURL(chapter.url, src)
-                        src?.let {
+                        matcher.group(1)?.let {
+                            val src = NetworkUtils.getAbsoluteURL(chapter.url, it)
                             srcList.add(Triple(chapter.title, index, src))
                         }
                     }
diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt
index f81ddfffb..399666b14 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/provider/ChapterProvider.kt
@@ -95,14 +95,13 @@ object ChapterProvider {
         contents.forEachIndexed { index, text ->
             val matcher = AppPattern.imgPattern.matcher(text)
             if (matcher.find()) {
-                var src = matcher.group(1)
-                if (!book.isEpub()) {
-                    src = NetworkUtils.getAbsoluteURL(bookChapter.url, src)
-                }
-                src?.let {
-                    durY = setTypeImage(
-                        book, bookChapter, src, durY, textPages, imageStyle
-                    )
+                matcher.group(1)?.let {
+                    if (!book.isEpub()) {
+                        val src = NetworkUtils.getAbsoluteURL(bookChapter.url, it)
+                        durY = setTypeImage(
+                            book, bookChapter, src, durY, textPages, imageStyle
+                        )
+                    }
                 }
             } else {
                 val isTitle = index == 0
diff --git a/app/src/main/java/io/legado/app/utils/NetworkUtils.kt b/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
index 79dcb5790..87be05e05 100644
--- a/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
@@ -69,9 +69,8 @@ object NetworkUtils {
     /**
      * 获取绝对地址
      */
-    fun getAbsoluteURL(baseURL: String?, relativePath: String?): String? {
+    fun getAbsoluteURL(baseURL: String?, relativePath: String): String {
         if (baseURL.isNullOrEmpty()) return relativePath
-        if (relativePath.isNullOrEmpty()) return baseURL
         if (relativePath.isAbsUrl()) return relativePath
         var relativeUrl = relativePath
         try {
@@ -88,7 +87,7 @@ object NetworkUtils {
     /**
      * 获取绝对地址
      */
-    fun getAbsoluteURL(baseURL: URL?, relativePath: String): String? {
+    fun getAbsoluteURL(baseURL: URL?, relativePath: String): String {
         if (baseURL == null) return relativePath
         var relativeUrl = relativePath
         try {