diff --git a/app/src/main/java/io/legado/app/constant/AppConst.kt b/app/src/main/java/io/legado/app/constant/AppConst.kt
index 863f9e27a..0d98ed75e 100644
--- a/app/src/main/java/io/legado/app/constant/AppConst.kt
+++ b/app/src/main/java/io/legado/app/constant/AppConst.kt
@@ -2,6 +2,7 @@ package io.legado.app.constant
 
 import io.legado.app.App
 import io.legado.app.R
+import javax.script.ScriptEngineManager
 
 object AppConst {
     const val channelIdDownload = "channel_download"
@@ -11,6 +12,8 @@ object AppConst {
     const val APP_TAG = "Legado"
     const val RC_IMPORT_YUEDU_DATA = 100
 
+    val SCRIPT_ENGINE = ScriptEngineManager().getEngineByName("rhino")
+
     val NOT_AVAILABLE = App.INSTANCE.getString(R.string.not_available)
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/constant/Pattern.kt b/app/src/main/java/io/legado/app/constant/Pattern.kt
new file mode 100644
index 000000000..917f4d52e
--- /dev/null
+++ b/app/src/main/java/io/legado/app/constant/Pattern.kt
@@ -0,0 +1,8 @@
+package io.legado.app.constant
+
+import java.util.regex.Pattern
+
+object Pattern {
+    val JS_PATTERN = Pattern.compile("(<js>[\\w\\W]*?</js>|@js:[\\w\\W]*$)", Pattern.CASE_INSENSITIVE)
+    val EXP_PATTERN = Pattern.compile("\\{\\{([\\w\\W]*?)\\}\\}")
+}
\ No newline at end of file
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
new file mode 100644
index 000000000..dffcd7aee
--- /dev/null
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt
@@ -0,0 +1,290 @@
+package io.legado.app.model.analyzeRule
+
+import android.annotation.SuppressLint
+import android.text.TextUtils
+import androidx.annotation.Keep
+import io.legado.app.constant.AppConst.SCRIPT_ENGINE
+import io.legado.app.constant.Pattern.EXP_PATTERN
+import io.legado.app.constant.Pattern.JS_PATTERN
+import io.legado.app.utils.NetworkUtils
+import java.net.URLEncoder
+import java.util.*
+import java.util.regex.Pattern
+import javax.script.SimpleBindings
+
+
+/**
+ * Created by GKF on 2018/1/24.
+ * 搜索URL规则解析
+ */
+@Keep
+class AnalyzeUrl @SuppressLint("DefaultLocale")
+@Throws(Exception::class)
+constructor(ruleUrl: String, key: String?, page: Int?, headerMapF: Map<String, String>?, baseUrl: String?) {
+    private var baseUrl: String? = null
+    var url: String? = null
+        private set
+    var host: String? = null
+        private set
+    var path: String? = null
+        private set
+    var queryStr: String? = null
+        private set
+    private val queryMap = LinkedHashMap<String, String>()
+    private val headerMap = HashMap<String, String>()
+    private var charCode: String? = null
+    var urlMode = UrlMode.DEFAULT
+        private set
+
+    val postData: ByteArray
+        get() {
+            val builder = StringBuilder()
+            val keys = queryMap.keys
+            for (key in keys) {
+                builder.append(String.format("%s=%s&", key, queryMap[key]))
+            }
+            builder.deleteCharAt(builder.lastIndexOf("&"))
+            return builder.toString().toByteArray()
+        }
+
+    @Throws(Exception::class)
+    constructor(urlRule: String) : this(urlRule, null, null, null, null)
+
+    @Throws(Exception::class)
+    constructor(urlRule: String, headerMapF: Map<String, String>, baseUrl: String) : this(
+        urlRule,
+        null,
+        null,
+        headerMapF,
+        baseUrl
+    )
+
+    init {
+        var ruleUrl = ruleUrl
+        if (!TextUtils.isEmpty(baseUrl)) {
+//            this.baseUrl = headerPattern.matcher(baseUrl).replaceAll("")
+        }
+        //解析Header
+        ruleUrl = analyzeHeader(ruleUrl, headerMapF)
+        //替换关键字
+        key?.let {
+            if (it.isNotBlank()) {
+                ruleUrl = ruleUrl.replace("searchKey", it)
+            }
+        }
+        //分离编码规则
+        ruleUrl = splitCharCode(ruleUrl)
+        //判断是否有下一页
+        if (page != null && page > 1 && !ruleUrl.contains("searchPage"))
+            throw Exception("没有下一页")
+        //替换js
+        ruleUrl = replaceJs(ruleUrl, baseUrl, page, key)
+        //设置页数
+        ruleUrl = analyzePage(ruleUrl, page)
+        //执行规则列表
+        val ruleList = splitRule(ruleUrl)
+        for (rule in ruleList) {
+            ruleUrl = if (rule.startsWith("<js>")) {
+                evalJS(rule.substring(4, rule.lastIndexOf("<")), ruleUrl) as String
+            } else {
+                rule.replace("@result", ruleUrl)
+            }
+        }
+        //分离post参数
+        var ruleUrlS = ruleUrl.split("@".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+        if (ruleUrlS.size > 1) {
+            urlMode = UrlMode.POST
+        } else {
+            //分离get参数
+            ruleUrlS = ruleUrlS[0].split("\\?".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+            if (ruleUrlS.size > 1) {
+                urlMode = UrlMode.GET
+            }
+        }
+        generateUrlPath(ruleUrlS[0])
+        if (urlMode != UrlMode.DEFAULT) {
+            analyzeQuery(ruleUrlS[1])
+        }
+    }
+
+    /**
+     * 解析Header
+     */
+    private fun analyzeHeader(ruleUrl: String, headerMapF: Map<String, String>?): String {
+//        var ruleUrl = ruleUrl
+//        if (headerMapF != null) {
+//            headerMap.putAll(headerMapF)
+//        }
+//        val matcher = headerPattern.matcher(ruleUrl)
+//        if (matcher.find()) {
+//            var find = matcher.group(0)
+//            ruleUrl = ruleUrl.replace(find, "")
+//            find = find.substring(8)
+//            try {
+//                val map = Gson().fromJson<Map<String, String>>(find)
+//                headerMap.putAll(map)
+//            } catch (ignored: Exception) {
+//            }
+//        }
+        return ruleUrl
+    }
+
+    /**
+     * 分离编码规则
+     */
+    private fun splitCharCode(rule: String): String {
+        val ruleUrlS = rule.split("\\|".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+        if (ruleUrlS.size > 1) {
+            if (!TextUtils.isEmpty(ruleUrlS[1])) {
+                val qtS = ruleUrlS[1].split("&".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+                for (qt in qtS) {
+                    val gz = qt.split("=".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+                    if (gz[0] == "char") {
+                        charCode = gz[1]
+                    }
+                }
+            }
+        }
+        return ruleUrlS[0]
+    }
+
+    /**
+     * 解析页数
+     */
+    private fun analyzePage(ruleUrl: String, searchPage: Int?): String {
+        var ruleUrl = ruleUrl
+        if (searchPage == null) return ruleUrl
+        val matcher = pagePattern.matcher(ruleUrl)
+        while (matcher.find()) {
+            val pages = matcher.group(1).split(",".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+            if (searchPage <= pages.size) {
+                ruleUrl = ruleUrl.replace(matcher.group(), pages[searchPage - 1].trim { it <= ' ' })
+            } else {
+                ruleUrl = ruleUrl.replace(matcher.group(), pages[pages.size - 1].trim { it <= ' ' })
+            }
+        }
+        return ruleUrl.replace("searchPage-1", (searchPage - 1).toString())
+            .replace("searchPage+1", (searchPage + 1).toString())
+            .replace("searchPage", searchPage.toString())
+    }
+
+    /**
+     * 替换js
+     */
+    @SuppressLint("DefaultLocale")
+    @Throws(Exception::class)
+    private fun replaceJs(ruleUrl: String, baseUrl: String?, searchPage: Int?, searchKey: String?): String {
+        var ruleUrl = ruleUrl
+        if (ruleUrl.contains("{{") && ruleUrl.contains("}}")) {
+            var jsEval: Any
+            val sb = StringBuffer(ruleUrl.length)
+            val simpleBindings = object : SimpleBindings() {
+                init {
+                    this["baseUrl"] = baseUrl
+                    this["searchPage"] = searchPage
+                    this["searchKey"] = searchKey
+                }
+            }
+            val expMatcher = EXP_PATTERN.matcher(ruleUrl)
+            while (expMatcher.find()) {
+                jsEval = SCRIPT_ENGINE.eval(expMatcher.group(1), simpleBindings)
+                if (jsEval is String) {
+                    expMatcher.appendReplacement(sb, jsEval)
+                } else if (jsEval is Double && jsEval % 1.0 == 0.0) {
+                    expMatcher.appendReplacement(sb, String.format("%.0f", jsEval))
+                } else {
+                    expMatcher.appendReplacement(sb, jsEval.toString())
+                }
+            }
+            expMatcher.appendTail(sb)
+            ruleUrl = sb.toString()
+        }
+        return ruleUrl
+    }
+
+    /**
+     * 解析QueryMap
+     */
+    @Throws(Exception::class)
+    private fun analyzeQuery(allQuery: String) {
+        queryStr = allQuery
+        val queryS = allQuery.split("&".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+        for (query in queryS) {
+            val queryM = query.split("=".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+            val value = if (queryM.size > 1) queryM[1] else ""
+            if (TextUtils.isEmpty(charCode)) {
+                if (NetworkUtils.hasUrlEncoded(value)) {
+                    queryMap[queryM[0]] = value
+                } else {
+                    queryMap[queryM[0]] = URLEncoder.encode(value, "UTF-8")
+                }
+            } else if (charCode == "escape") {
+//                queryMap[queryM[0]] = StringUtils.escape(value)
+            } else {
+                queryMap[queryM[0]] = URLEncoder.encode(value, charCode)
+            }
+        }
+    }
+
+    /**
+     * 拆分规则
+     */
+    private fun splitRule(ruleStr: String): List<String> {
+        val ruleList = ArrayList<String>()
+        val jsMatcher = JS_PATTERN.matcher(ruleStr)
+        var start = 0
+        var tmp: String
+        while (jsMatcher.find()) {
+            if (jsMatcher.start() > start) {
+                tmp = ruleStr.substring(start, jsMatcher.start()).replace("\n".toRegex(), "").trim { it <= ' ' }
+                if (!TextUtils.isEmpty(tmp)) {
+                    ruleList.add(tmp)
+                }
+            }
+            ruleList.add(jsMatcher.group())
+            start = jsMatcher.end()
+        }
+        if (ruleStr.length > start) {
+            tmp = ruleStr.substring(start).replace("\n".toRegex(), "").trim { it <= ' ' }
+            if (!TextUtils.isEmpty(tmp)) {
+                ruleList.add(tmp)
+            }
+        }
+        return ruleList
+    }
+
+    /**
+     * 分解URL
+     */
+    private fun generateUrlPath(ruleUrl: String) {
+        baseUrl?.let { url = NetworkUtils.getAbsoluteURL(it, ruleUrl) }
+        host = NetworkUtils.getBaseUrl(url)
+        path = url!!.substring(host!!.length)
+    }
+
+    /**
+     * 执行JS
+     */
+    @Throws(Exception::class)
+    private fun evalJS(jsStr: String, result: Any): Any {
+        val bindings = SimpleBindings()
+        bindings["result"] = result
+        return SCRIPT_ENGINE.eval(jsStr, bindings)
+    }
+
+    fun getQueryMap(): Map<String, String> {
+        return queryMap
+    }
+
+    fun getHeaderMap(): Map<String, String> {
+        return headerMap
+    }
+
+    enum class UrlMode {
+        GET, POST, DEFAULT
+    }
+
+    companion object {
+        private val pagePattern = Pattern.compile("\\{(.*?)\\}")
+    }
+}
diff --git a/app/src/main/java/io/legado/app/utils/NetworkUtils.kt b/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
new file mode 100644
index 000000000..79ce84ef9
--- /dev/null
+++ b/app/src/main/java/io/legado/app/utils/NetworkUtils.kt
@@ -0,0 +1,110 @@
+package io.legado.app.utils
+
+import android.text.TextUtils
+import java.net.URL
+import java.util.*
+
+object NetworkUtils {
+
+    private val notNeedEncoding: BitSet by lazy {
+        val bitSet = BitSet(256)
+        var i: Int = 'a'.toInt()
+        while (i <= 'z'.toInt()) {
+            bitSet.set(i)
+            i++
+        }
+        i = 'A'.toInt()
+        while (i <= 'Z'.toInt()) {
+            bitSet.set(i)
+            i++
+        }
+        i = '0'.toInt()
+        while (i <= '9'.toInt()) {
+            bitSet.set(i)
+            i++
+        }
+        bitSet.set('+'.toInt())
+        bitSet.set('-'.toInt())
+        bitSet.set('_'.toInt())
+        bitSet.set('.'.toInt())
+        bitSet.set('$'.toInt())
+        bitSet.set(':'.toInt())
+        bitSet.set('('.toInt())
+        bitSet.set(')'.toInt())
+        bitSet.set('!'.toInt())
+        bitSet.set('*'.toInt())
+        bitSet.set('@'.toInt())
+        bitSet.set('&'.toInt())
+        bitSet.set('#'.toInt())
+        bitSet.set(','.toInt())
+        bitSet.set('['.toInt())
+        bitSet.set(']'.toInt())
+        return@lazy bitSet
+    }
+
+    /**
+     * 支持JAVA的URLEncoder.encode出来的string做判断。 即: 将' '转成'+'
+     * 0-9a-zA-Z保留 <br></br>
+     * ! * ' ( ) ; : @ & = + $ , / ? # [ ] 保留
+     * 其他字符转成%XX的格式，X是16进制的大写字符，范围是[0-9A-F]
+     */
+    fun hasUrlEncoded(str: String): Boolean {
+        var needEncode = false
+        var i = 0
+        while (i < str.length) {
+            val c = str[i]
+            if (notNeedEncoding.get(c.toInt())) {
+                i++
+                continue
+            }
+            if (c == '%' && i + 2 < str.length) {
+                // 判断是否符合urlEncode规范
+                val c1 = str[++i]
+                val c2 = str[++i]
+                if (isDigit16Char(c1) && isDigit16Char(c2)) {
+                    i++
+                    continue
+                }
+            }
+            // 其他字符，肯定需要urlEncode
+            needEncode = true
+            break
+            i++
+        }
+
+        return !needEncode
+    }
+
+    /**
+     * 判断c是否是16进制的字符
+     */
+    private fun isDigit16Char(c: Char): Boolean {
+        return c >= '0' && c <= '9' || c >= 'A' && c <= 'F'
+    }
+
+    /**
+     * 获取绝对地址
+     */
+    fun getAbsoluteURL(baseURL: String, relativePath: String): String {
+        var relativeUrl = relativePath
+        if (TextUtils.isEmpty(baseURL)) return relativePath
+        try {
+            val absoluteUrl = URL(baseURL)
+            val parseUrl = URL(absoluteUrl, relativePath)
+            relativeUrl = parseUrl.toString()
+            return relativeUrl
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+        return relativeUrl
+    }
+
+    fun getBaseUrl(url: String?): String? {
+        if (url == null || !url.startsWith("http")) return null
+        val index = url.indexOf("/", 9)
+        return if (index == -1) {
+            url
+        } else url.substring(0, index)
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/utils/StringExtensions.kt b/app/src/main/java/io/legado/app/utils/StringExtensions.kt
index 2706e05dd..2abbf078d 100644
--- a/app/src/main/java/io/legado/app/utils/StringExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/StringExtensions.kt
@@ -1,5 +1,7 @@
 package io.legado.app.utils
 
+import android.text.TextUtils
+
 // import org.apache.commons.text.StringEscapeUtils
 
 fun String?.safeTrim() = if (this.isNullOrBlank()) null else this.trim()
@@ -7,6 +9,26 @@ fun String?.safeTrim() = if (this.isNullOrBlank()) null else this.trim()
 fun String.isAbsUrl() = this.startsWith("http://", true)
         || this.startsWith("https://", true)
 
+fun String.isJson(): Boolean = kotlin.run {
+    var result = false
+    if (!TextUtils.isEmpty(this)) {
+        val str = this.trim()
+        if (str.startsWith("{") && str.endsWith("}")) {
+            result = true
+        } else if (str.startsWith("[") && str.endsWith("]")) {
+            result = true
+        }
+    }
+    return result
+}
+
+fun String.htmlFormat(): String = if (TextUtils.isEmpty(this)) "" else
+    this.replace("(?i)<(br[\\s/]*|/*p.*?|/*div.*?)>".toRegex(), "\n")// 替换特定标签为换行符
+        .replace("<[script>]*.*?>|&nbsp;".toRegex(), "")// 删除script标签对和空格转义符
+        .replace("\\s*\\n+\\s*".toRegex(), "\n　　")// 移除空行,并增加段前缩进2个汉字
+        .replace("^[\\n\\s]+".toRegex(), "　　")//移除开头空行,并增加段前缩进2个汉字
+        .replace("[\\n\\s]+$".toRegex(), "") //移除尾部空行
+
 fun String.splitNotBlank(delim: String) = if (!this.contains(delim)) sequenceOf(this) else
     this.split(delim).asSequence().map { it.trim() }.filterNot { it.isBlank() }