diff --git a/app/src/main/java/io/legado/app/data/entities/Book.kt b/app/src/main/java/io/legado/app/data/entities/Book.kt
index 5b61a6cc7..79fc9dbe2 100644
--- a/app/src/main/java/io/legado/app/data/entities/Book.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Book.kt
@@ -56,6 +56,9 @@ data class Book(
     var readConfig: ReadConfig? = null
 ) : Parcelable, BaseBook {
 
+    @Ignore
+    constructor() : this(bookUrl = "")
+
     fun isLocalBook(): Boolean {
         return origin == BookType.local
     }
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 39b8ea6b0..48f4fc3bf 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
@@ -47,6 +47,9 @@ data class BookChapter(
     var variable: String? = null        //变量
 ) : Parcelable, RuleDataInterface {
 
+    @Ignore
+    constructor() : this(url = "", bookUrl = "")
+
     @delegate:Transient
     @delegate:Ignore
     @IgnoredOnParcel
diff --git a/app/src/main/java/io/legado/app/data/entities/BookGroup.kt b/app/src/main/java/io/legado/app/data/entities/BookGroup.kt
index f19f5f05c..78cc44cce 100644
--- a/app/src/main/java/io/legado/app/data/entities/BookGroup.kt
+++ b/app/src/main/java/io/legado/app/data/entities/BookGroup.kt
@@ -3,6 +3,7 @@ package io.legado.app.data.entities
 import android.content.Context
 import android.os.Parcelable
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.PrimaryKey
 import io.legado.app.R
 import io.legado.app.constant.AppConst
@@ -19,6 +20,9 @@ data class BookGroup(
     var show: Boolean = true
 ) : Parcelable {
 
+    @Ignore
+    constructor() : this(groupName = "")
+
     fun getManageName(context: Context): String {
         return when (groupId) {
             AppConst.bookGroupAllId -> "$groupName(${context.getString(R.string.all)})"
diff --git a/app/src/main/java/io/legado/app/data/entities/BookSource.kt b/app/src/main/java/io/legado/app/data/entities/BookSource.kt
index 01fdf3fe5..bcc222ba5 100644
--- a/app/src/main/java/io/legado/app/data/entities/BookSource.kt
+++ b/app/src/main/java/io/legado/app/data/entities/BookSource.kt
@@ -19,10 +19,10 @@ import timber.log.Timber
     indices = [(Index(value = ["bookSourceUrl"], unique = false))]
 )
 data class BookSource(
-    var bookSourceName: String = "",                // 名称
-    var bookSourceGroup: String? = null,            // 分组
     @PrimaryKey
     var bookSourceUrl: String = "",                 // 地址，包括 http/https
+    var bookSourceName: String = "",                // 名称
+    var bookSourceGroup: String? = null,            // 分组
     var bookSourceType: Int = BookType.default,     // 类型，0 文本，1 音频, 3 图片
     var bookUrlPattern: String? = null,             // 详情页url正则
     var customOrder: Int = 0,                       // 手动排序编号
@@ -46,6 +46,9 @@ data class BookSource(
     var ruleContent: ContentRule? = null            // 正文页规则
 ) : Parcelable, BaseSource {
 
+    @Ignore
+    constructor() : this(bookSourceUrl = "")
+
     override fun getTag(): String {
         return bookSourceName
     }
diff --git a/app/src/main/java/io/legado/app/data/entities/Bookmark.kt b/app/src/main/java/io/legado/app/data/entities/Bookmark.kt
index 9ee4a8ea0..46db12e35 100644
--- a/app/src/main/java/io/legado/app/data/entities/Bookmark.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Bookmark.kt
@@ -2,6 +2,7 @@ package io.legado.app.data.entities
 
 import android.os.Parcelable
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.Index
 import androidx.room.PrimaryKey
 import kotlinx.parcelize.Parcelize
@@ -21,5 +22,9 @@ data class Bookmark(
     var chapterName: String = "",
     var bookText: String = "",
     var content: String = ""
+) : Parcelable {
 
-) : Parcelable
\ No newline at end of file
+    @Ignore
+    constructor() : this(bookName = "")
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/Cache.kt b/app/src/main/java/io/legado/app/data/entities/Cache.kt
index f9687dea7..39c0bd808 100644
--- a/app/src/main/java/io/legado/app/data/entities/Cache.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Cache.kt
@@ -1,6 +1,7 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.Index
 import androidx.room.PrimaryKey
 
@@ -10,4 +11,9 @@ data class Cache(
     val key: String = "",
     var value: String? = null,
     var deadline: Long = 0L
-)
\ No newline at end of file
+) {
+
+    @Ignore
+    constructor() : this(key = "")
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/Cookie.kt b/app/src/main/java/io/legado/app/data/entities/Cookie.kt
index 8e12febf4..193fb643c 100644
--- a/app/src/main/java/io/legado/app/data/entities/Cookie.kt
+++ b/app/src/main/java/io/legado/app/data/entities/Cookie.kt
@@ -1,6 +1,7 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.Index
 import androidx.room.PrimaryKey
 
@@ -9,4 +10,9 @@ data class Cookie(
     @PrimaryKey
     var url: String = "",
     var cookie: String = ""
-)
\ No newline at end of file
+) {
+
+    @Ignore
+    constructor() : this(url = "")
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/HttpTTS.kt b/app/src/main/java/io/legado/app/data/entities/HttpTTS.kt
index 3b1db4512..cbc6a05da 100644
--- a/app/src/main/java/io/legado/app/data/entities/HttpTTS.kt
+++ b/app/src/main/java/io/legado/app/data/entities/HttpTTS.kt
@@ -1,6 +1,7 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.PrimaryKey
 import com.jayway.jsonpath.DocumentContext
 import io.legado.app.utils.GSON
@@ -25,6 +26,9 @@ data class HttpTTS(
     var loginCheckJs: String? = null,
 ) : BaseSource {
 
+    @Ignore
+    constructor() : this(name = "")
+
     override fun getTag(): String {
         return name
     }
diff --git a/app/src/main/java/io/legado/app/data/entities/ReadRecord.kt b/app/src/main/java/io/legado/app/data/entities/ReadRecord.kt
index 2b2b5caf4..b12246c62 100644
--- a/app/src/main/java/io/legado/app/data/entities/ReadRecord.kt
+++ b/app/src/main/java/io/legado/app/data/entities/ReadRecord.kt
@@ -1,10 +1,16 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 
 @Entity(tableName = "readRecord", primaryKeys = ["deviceId", "bookName"])
 data class ReadRecord(
     var deviceId: String = "",
     var bookName: String = "",
     var readTime: Long = 0L
-)
\ No newline at end of file
+) {
+
+    @Ignore
+    constructor() : this(deviceId = "")
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/ReadRecordShow.kt b/app/src/main/java/io/legado/app/data/entities/ReadRecordShow.kt
index 79795b0d9..0ede36a84 100644
--- a/app/src/main/java/io/legado/app/data/entities/ReadRecordShow.kt
+++ b/app/src/main/java/io/legado/app/data/entities/ReadRecordShow.kt
@@ -1,6 +1,13 @@
 package io.legado.app.data.entities
 
+import androidx.room.Ignore
+
 data class ReadRecordShow(
     var bookName: String = "",
     var readTime: Long = 0L
-)
\ No newline at end of file
+) {
+
+    @Ignore
+    constructor() : this("")
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt b/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
index 29f0072fd..be085a9fc 100644
--- a/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
+++ b/app/src/main/java/io/legado/app/data/entities/ReplaceRule.kt
@@ -2,10 +2,7 @@ package io.legado.app.data.entities
 
 import android.os.Parcelable
 import android.text.TextUtils
-import androidx.room.ColumnInfo
-import androidx.room.Entity
-import androidx.room.Index
-import androidx.room.PrimaryKey
+import androidx.room.*
 import kotlinx.parcelize.Parcelize
 import java.util.regex.Pattern
 import java.util.regex.PatternSyntaxException
@@ -29,6 +26,8 @@ data class ReplaceRule(
     var order: Int = 0
 ) : Parcelable {
 
+    @Ignore
+    constructor() : this(id = System.currentTimeMillis())
 
     override fun equals(other: Any?): Boolean {
         if (other is ReplaceRule) {
diff --git a/app/src/main/java/io/legado/app/data/entities/RssArticle.kt b/app/src/main/java/io/legado/app/data/entities/RssArticle.kt
index 911fb16b8..8928ddc28 100644
--- a/app/src/main/java/io/legado/app/data/entities/RssArticle.kt
+++ b/app/src/main/java/io/legado/app/data/entities/RssArticle.kt
@@ -26,6 +26,9 @@ data class RssArticle(
     var variable: String? = null
 ) : RuleDataInterface {
 
+    @Ignore
+    constructor() : this("")
+
     override fun hashCode() = link.hashCode()
 
     override fun equals(other: Any?): Boolean {
diff --git a/app/src/main/java/io/legado/app/data/entities/RssReadRecord.kt b/app/src/main/java/io/legado/app/data/entities/RssReadRecord.kt
index edbb4c15d..2a54427dd 100644
--- a/app/src/main/java/io/legado/app/data/entities/RssReadRecord.kt
+++ b/app/src/main/java/io/legado/app/data/entities/RssReadRecord.kt
@@ -1,7 +1,13 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.PrimaryKey
 
 @Entity(tableName = "rssReadRecords")
-data class RssReadRecord(@PrimaryKey val record: String, val read: Boolean = true)
\ No newline at end of file
+data class RssReadRecord(@PrimaryKey val record: String, val read: Boolean = true) {
+
+    @Ignore
+    constructor() : this("")
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/data/entities/RssSource.kt b/app/src/main/java/io/legado/app/data/entities/RssSource.kt
index 78830285a..7f9c97051 100644
--- a/app/src/main/java/io/legado/app/data/entities/RssSource.kt
+++ b/app/src/main/java/io/legado/app/data/entities/RssSource.kt
@@ -2,6 +2,7 @@ package io.legado.app.data.entities
 
 import android.os.Parcelable
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.Index
 import androidx.room.PrimaryKey
 import com.jayway.jsonpath.DocumentContext
@@ -43,6 +44,9 @@ data class RssSource(
     var customOrder: Int = 0
 ) : Parcelable, BaseSource {
 
+    @Ignore
+    constructor() : this("")
+
     override fun getTag(): String {
         return sourceName
     }
diff --git a/app/src/main/java/io/legado/app/data/entities/RssStar.kt b/app/src/main/java/io/legado/app/data/entities/RssStar.kt
index df4bd546f..fc696cf94 100644
--- a/app/src/main/java/io/legado/app/data/entities/RssStar.kt
+++ b/app/src/main/java/io/legado/app/data/entities/RssStar.kt
@@ -25,6 +25,9 @@ data class RssStar(
     var variable: String? = null
 ) : RuleDataInterface {
 
+    @Ignore
+    constructor() : this("")
+
     @delegate:Transient
     @delegate:Ignore
     @IgnoredOnParcel
diff --git a/app/src/main/java/io/legado/app/data/entities/RuleSub.kt b/app/src/main/java/io/legado/app/data/entities/RuleSub.kt
index 2b43787fe..bc9c250d0 100644
--- a/app/src/main/java/io/legado/app/data/entities/RuleSub.kt
+++ b/app/src/main/java/io/legado/app/data/entities/RuleSub.kt
@@ -1,6 +1,7 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.PrimaryKey
 
 @Entity(tableName = "ruleSubs")
@@ -13,4 +14,9 @@ data class RuleSub(
     var customOrder: Int = 0,
     var autoUpdate: Boolean = false,
     var update: Long = System.currentTimeMillis()
-)
+) {
+
+    @Ignore
+    constructor() : this(name = "")
+
+}
diff --git a/app/src/main/java/io/legado/app/data/entities/SearchBook.kt b/app/src/main/java/io/legado/app/data/entities/SearchBook.kt
index 96c525b3a..6169aa6d0 100644
--- a/app/src/main/java/io/legado/app/data/entities/SearchBook.kt
+++ b/app/src/main/java/io/legado/app/data/entities/SearchBook.kt
@@ -40,6 +40,9 @@ data class SearchBook(
     var originOrder: Int = 0
 ) : Parcelable, BaseBook, Comparable<SearchBook> {
 
+    @Ignore
+    constructor() : this(bookUrl = "")
+
     @Ignore
     @IgnoredOnParcel
     override var infoHtml: String? = null
diff --git a/app/src/main/java/io/legado/app/data/entities/SearchKeyword.kt b/app/src/main/java/io/legado/app/data/entities/SearchKeyword.kt
index 955e5fe3d..ade4a5551 100644
--- a/app/src/main/java/io/legado/app/data/entities/SearchKeyword.kt
+++ b/app/src/main/java/io/legado/app/data/entities/SearchKeyword.kt
@@ -2,6 +2,7 @@ package io.legado.app.data.entities
 
 import android.os.Parcelable
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.Index
 import androidx.room.PrimaryKey
 import kotlinx.parcelize.Parcelize
@@ -14,4 +15,9 @@ data class SearchKeyword(
     var word: String = "",                      // 搜索关键词
     var usage: Int = 1,                         // 使用次数
     var lastUseTime: Long = System.currentTimeMillis()      // 最后一次使用时间
-) : Parcelable
+) : Parcelable {
+
+    @Ignore
+    constructor() : this(word = "")
+
+}
diff --git a/app/src/main/java/io/legado/app/data/entities/TxtTocRule.kt b/app/src/main/java/io/legado/app/data/entities/TxtTocRule.kt
index 52669dab7..54429bbf3 100644
--- a/app/src/main/java/io/legado/app/data/entities/TxtTocRule.kt
+++ b/app/src/main/java/io/legado/app/data/entities/TxtTocRule.kt
@@ -1,6 +1,7 @@
 package io.legado.app.data.entities
 
 import androidx.room.Entity
+import androidx.room.Ignore
 import androidx.room.PrimaryKey
 
 
@@ -12,4 +13,9 @@ data class TxtTocRule(
     var rule: String = "",
     var serialNumber: Int = -1,
     var enable: Boolean = true
-)
\ No newline at end of file
+) {
+
+    @Ignore
+    constructor() : this(name = "")
+
+}
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 45afa777f..1f3ac687d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.5.31'
+    ext.kotlin_version = '1.6.0'
     repositories {
         google()
         mavenCentral()