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Alibaba-Dexposed框架在线热补丁修复的使用

發布時間：2025/3/15 编程问答 33 豆豆

生活随笔收集整理的這篇文章主要介紹了 Alibaba-Dexposed框架在线热补丁修复的使用小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

目錄(?)[+]

前兩篇已經介紹了alibaba的AndFix熱修復：?
Alibaba-AndFix Bug熱修復框架的使用?
Alibaba-AndFix Bug熱修復框架原理及源碼解析

DexPosed是Alibaba的另一個框架，都可以在線熱修復bug，只不過DexPosed也可以實現其他的功能。

DexPosed
- 介紹
- 應用場景
- 在Android上的使用
  - 在自定義Application初始化
- patch文件的生成
- 支持的系統

DexPosed

介紹

DexPosed是強大而無侵入的AOP（面向切面編程）運行Android應用程序開發框架，基于開源的Xposed框架項目的工作（Xposed是修改系統框架服務的框架）。?
Github :?https://github.com/alibaba/dexposed

應用場景

AOP編程?
儀表（用于測試，性能監測等）?
在線熱補丁修復?
SDK hooking(鉤)以提供更好的開發體驗

在Android上的使用

Android Studio中使用：?
在Gradle中添加：

<code class="hljs nginx has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> dependencies {compile 'com.taobao.android:dexposed:0.1.1@aar'}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li></ul>

在libs中加入：dexposedbridge.jar、patchloader.jar包。?
需要添加的so文件有：libdexposed.so、libdexposed_1.so。

在自定義Application初始化

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">if (DexposedBridge.canDexposed(this)) {//判斷系統是否支持DexPosedLog.e("APP", "true application"); } else {Log.e("APP", "false application"); }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>

當收到服務器推送消息，需要下載patch文件，下載完成后即時加載來修復bug。?
PatchResult result = PatchMain.load(this, “patch apk文件的路徑”, null);

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> //加載patch apk文件PatchResult result = PatchMain.load(this, fullpath, null);if (result.isSuccess()) {Log.e("Hotpatch", "patch success!");} else {Log.e("Hotpatch", "patch error is " + result.getErrorInfo());}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul>

//注：patch apk 文件不能放在共享目錄中，建議放在cache文件中。?
在應用升級之前需每次load加載patch apk，當應用升級后把patch apk進行清空。?
PatchMain.load加載patch apk，會遍歷apk中實現IPatch接口的所有,并hook對應的方法對象。

patch文件的生成

新創建一個項目MyPatch，并在libs中加入dexposedbridge.jar、patchloader.jar包。?
在build.gradle設置jar為provided，如下：

<code class="hljs livecodeserver has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">dependencies {provided files('libs/dexposedbridge.jar')provided files('libs/patchloader.jar') }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li></ul>

如果想修復一個bug，需在MyPatch中創建一個類，并實現IPatch接口，實現handlePatch方法。

接下的Demo是想在bug方法的前后做一些處理，也可以終止bug方法的調用及修改bug方法的參數：

<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">package com.open.cool.patch;import android.util.Log; import android.view.View; import android.widget.Toast;import com.taobao.android.dexposed.DexposedBridge; import com.taobao.android.dexposed.XC_MethodHook; import com.taobao.patch.IPatch; import com.taobao.patch.PatchParam;//必須實現IPatch接口 public class MyPatch implements IPatch {@Overridepublic void handlePatch(final PatchParam arg0) throws Throwable {Class<?> cls = null;try {//使用類加載器獲取需要修復的方法所在的類Classcls = arg0.context.getClassLoader().loadClass("com.open.cool.mydex1.MainActivity");} catch (ClassNotFoundException e) {e.printStackTrace();return;}//hook想要操作的方法，在方法前后做一些處理，XC_MethodHook//cls上邊獲取到的，這里的test1是有bug的方法名稱，View.class是test1的參數類型，如果有多個參數就依次在后邊添加View.class,Object.class,Object.class等。DexposedBridge.findAndHookMethod(cls, "test1", View.class,new XC_MethodHook() {@Overrideprotected void beforeHookedMethod(MethodHookParam param) throws Throwable {super.beforeHookedMethod(param);Log.e("IPatch", "beforeHookedMethod");//TODO 調用hook方法前的操作Toast.makeText(arg0.context, "before", Toast.LENGTH_SHORT).show();// param.setResult(null);//禁止調用原方法}@Overrideprotected void afterHookedMethod(MethodHookParam param) throws Throwable {super.afterHookedMethod(param);//TODO 調用hook方法后的操作Log.e("IPatch", "afterHookedMethod");}});} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li><li style="box-sizing: border-box; padding: 0px 5px;">41</li><li style="box-sizing: border-box; padding: 0px 5px;">42</li><li style="box-sizing: border-box; padding: 0px 5px;">43</li><li style="box-sizing: border-box; padding: 0px 5px;">44</li><li style="box-sizing: border-box; padding: 0px 5px;">45</li><li style="box-sizing: border-box; padding: 0px 5px;">46</li><li style="box-sizing: border-box; padding: 0px 5px;">47</li><li style="box-sizing: border-box; padding: 0px 5px;">48</li><li style="box-sizing: border-box; padding: 0px 5px;">49</li><li style="box-sizing: border-box; padding: 0px 5px;">50</li><li style="box-sizing: border-box; padding: 0px 5px;">51</li></ul>

下面的Demo是直接替換掉bug方法：

<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">package com.open.cool.patch;import android.util.Log; import android.view.View; import android.widget.Toast;import com.taobao.android.dexposed.DexposedBridge; import com.taobao.android.dexposed.XC_MethodHook; import com.taobao.android.dexposed.XC_MethodReplacement; import com.taobao.patch.IPatch; import com.taobao.patch.PatchParam;//必須實現IPatch接口 public class MyPatch implements IPatch {@Overridepublic void handlePatch(final PatchParam arg0) throws Throwable {Class<?> cls = null;try {//使用類加載器獲取指定的類Classcls = arg0.context.getClassLoader().loadClass("com.open.cool.mydex1.MainActivity");} catch (ClassNotFoundException e) {e.printStackTrace();return;} // //替換hook方法中的方法實現，XC_MethodReplacementDexposedBridge.findAndHookMethod(cls, "test1", View.class, new XC_MethodReplacement() {@Overrideprotected Object replaceHookedMethod(XC_MethodHook.MethodHookParam methodHookParam) throws Throwable {//TODO 替換后的方法實現//.....return null;}});} }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li><li style="box-sizing: border-box; padding: 0px 5px;">39</li><li style="box-sizing: border-box; padding: 0px 5px;">40</li></ul>

上面2個Demo兩者的區別是：回調接口的類不同(XC_MethodHook和XC_MethodReplacement);?
//XC_MethodHook是XC_MethodReplacement的基類。

把MyPatch項目打包生成補丁apk文件，服務器通知客戶端下載補丁文件apk，并使用

<code class="hljs sql has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">PatchResult result = PatchMain.load(this, “patch apk文件的路徑”, null);</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li></ul>

加載補丁apk，即時修復bug方法。

如果項目有代碼混淆：?
需注意的部分

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">cls = arg0.context.getClassLoader().loadClass("packageName+className");</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li></ul>

packageName+className必須是混淆后的類名和方法名稱。

在打release包時，在build/outputs/mapping/release/下面有mapping.txt，這個里面記錄了混淆以前的類和混淆以后的類的一一對應關系（所以叫mapping.txt)，所以每次發版以后要保留好mapping.txt文件，以便以后編寫Patch。

原文地址：　http://blog.csdn.net/qxs965266509/article/details/49821413

支持的系統

Runtime Android Version Support

Dalvik	2.2	Not Test
Dalvik	2.3	Yes
Dalvik	3.0	No
Dalvik	4.0-4.4	Yes
ART	5.0	Testing
ART	5.1	No
ART	M	No

注意：android4.4之后的版本都用Art取代了Dalvik,所以要hook Android4.4以后的版本就必須去適配Art虛擬機的機制。目前官方表示，為了適配Art的dexposed_l只是beta版，所以最好不要在正式的線上產品中使用它。

總結

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