Java环境解析apk文件信息

概述：Java解析apk文件,获取apk文件里的包名，版本号，图标文件等;

功能：可以提供给windows和linux平台使用;

原理：利用aapt.exe或者aapt这些anroid平台解析apk文件的工具，借用终端shell调用命令解析输出信息;

代码：

这里贴出一些关键代码,并给出代码注释,如下

 package com.apkutils;

 import java.io.BufferedReader;
 import java.io.Closeable;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties; 

 /**
  * apk工具类。封装了获取Apk信息的方法。
  *
  * @author @author tony
  *
  *         <p>
  *         <b>version description</b><br />
  *         V0.2.1 修改程序名字为从路径中获得。
  *         </p>
  */
 public class ApkUtil {
     public static final String VERSION_CODE = "versionCode";
     public static final String VERSION_NAME = "versionName";
     public static final String SDK_VERSION = "sdkVersion";
     public static final String TARGET_SDK_VERSION = "targetSdkVersion";
     public static final String USES_PERMISSION = "uses-permission";
     public static final String APPLICATION_LABEL = "application-label";
     public static final String APPLICATION_ICON = "application-icon";
     public static final String USES_FEATURE = "uses-feature";
     public static final String USES_IMPLIED_FEATURE = "uses-implied-feature";
     public static final String SUPPORTS_SCREENS = "supports-screens";
     public static final String SUPPORTS_ANY_DENSITY = "supports-any-density";
     public static final String DENSITIES = "densities";
     public static final String PACKAGE = "package";
     public static final String APPLICATION = "application:";
     public static final String LAUNCHABLE_ACTIVITY = "launchable-activity";

     // api ---- os
     static Map<String, String> OSVersion = new HashMap<String, String>();

     static {
         OSVersion.put("3", "1.5");
         OSVersion.put("4", "1.6");
         OSVersion.put("5", "2.0");
         OSVersion.put("6", "2.0.1");
         OSVersion.put("7", "2.1");
         OSVersion.put("8", "2.2");
         OSVersion.put("9", "2.3");
         OSVersion.put("10", "2.3.3");
         OSVersion.put("11", "3.0");
         OSVersion.put("12", "3.1");
         OSVersion.put("13", "3.2");
         OSVersion.put("14", "4.0");
         OSVersion.put("15", "4.0.3");
         OSVersion.put("16", "4.1.1");
         OSVersion.put("17", "4.2");
         OSVersion.put("18", "4.3");
         OSVersion.put("19", "4.4");
     }

     private static final String SPLIT_REGEX = "(: )|(=')|(' )|'";
     private static final String FEATURE_SPLIT_REGEX = "(:')|(',')|'";
     /**
      * aapt所在的目录。
      */
     private String mAaptPath = "D:\\App\\";//winOS
     //private String mAaptPath = ApkUtil.class.getClassLoader().getResource("").getPath();//linux

     static String[] shellCommand;
     static String softName = "";
     static {
         shellCommand = new String[2];
         final String anOSName = System.getProperty("os.name");
         if (anOSName.toLowerCase().startsWith("windows")) {
             // Windows XP, Vista ...
             shellCommand[0] = "cmd";
             shellCommand[1] = "/C";
             softName = "aapt.exe";
         } else {
             // Unix, Linux ...
             shellCommand[0] = "/bin/sh";
             shellCommand[1] = "-c";
             softName = "aapt";
         }
     }

     /***
      * apkPath
      */
     static String apkPath = "C:/Users/win7/Desktop/Android/baiduyinyue_49.apk";

     /**
      * 返回一个apk程序的信息。
      *
      * @param apkPath
      *            apk的路径。
      * @return apkInfo 一个Apk的信息。
      */
     public ApkInfo getApkInfo(String apkPath) throws Exception {
         String command = mAaptPath + softName + " d badging \"" + apkPath
                 + "\"";
         Process process;
         try {
             process = Runtime.getRuntime().exec(
                     new String[] {shellCommand[0], shellCommand[1], command});
         } catch (IOException e) {
             process = null;
             throw e;
         }

         ApkInfo apkInfo = null;
         if(process != null){
             InputStream is = process.getInputStream();
             BufferedReader br = new BufferedReader(
                     new InputStreamReader(is, "utf8"));
             String tmp = br.readLine();
             try {
                 if (tmp == null || !tmp.startsWith("package")) {
                     throw new Exception("参数不正确，无法正常解析APK包。输出结果为:\n" + tmp + "...");
                 }
                 apkInfo = new ApkInfo();
                 do {
                     setApkInfoProperty(apkInfo, tmp);
                 } while ((tmp = br.readLine()) != null);
             } catch (Exception e) {
                 throw e;
             } finally {
                 process.destroy();
                 closeIO(is);
                 closeIO(br);
             }
         }
         return apkInfo;
     }

     /**
      * 设置APK的属性信息。
      *
      * @param apkInfo
      * @param source
      */
     private void setApkInfoProperty(ApkInfo apkInfo, String source) {
         if (source.startsWith(PACKAGE)) {
             splitPackageInfo(apkInfo, source);
         } else if (source.startsWith(LAUNCHABLE_ACTIVITY)) {
             apkInfo.setLaunchableActivity(getPropertyInQuote(source));
         } else if (source.startsWith(SDK_VERSION)) {
             apkInfo.setSdkVersion(getPropertyInQuote(source));
             apkInfo.setMinOSVersion(OSVersion.get(getPropertyInQuote(source)));
         } else if (source.startsWith(TARGET_SDK_VERSION)) {
             apkInfo.setTargetSdkVersion(getPropertyInQuote(source));
         } else if (source.startsWith(USES_PERMISSION)) {
             apkInfo.addToUsesPermissions(getPropertyInQuote(source));
         } else if (source.startsWith(APPLICATION_LABEL)) {
             apkInfo.setApplicationLable(getPropertyInQuote(source));
         } else if (source.startsWith(APPLICATION_ICON)) {
             apkInfo.addToApplicationIcons(getKeyBeforeColon(source),
                     getPropertyInQuote(source));
         } else if (source.startsWith(APPLICATION)) {
             String[] rs = source.split("( icon=')|'");
             apkInfo.setApplicationIcon(rs[rs.length - 1]);
         } else if (source.startsWith(USES_FEATURE)) {
             apkInfo.addToFeatures(getPropertyInQuote(source));
         } else if (source.startsWith(USES_IMPLIED_FEATURE)) {
             apkInfo.addToImpliedFeatures(getFeature(source));
         } else {

         }
         try {
             apkInfo.setApkFileSize(getFileSizes(new File(apkPath)));
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     private ImpliedFeature getFeature(String source) {
         String[] result = source.split(FEATURE_SPLIT_REGEX);
         ImpliedFeature impliedFeature = new ImpliedFeature(result[1], result[2]);
         return impliedFeature;
     }

     /**
      * 返回出格式为name: 'value'中的value内容。
      *
      * @param source
      * @return
      */
     private String getPropertyInQuote(String source) {
         int index = source.indexOf("'") + 1;
         return source.substring(index, source.indexOf('\'', index));
     }

     /**
      * 返回冒号前的属性名称
      *
      * @param source
      * @return
      */
     private String getKeyBeforeColon(String source) {
         return source.substring(0, source.indexOf(':'));
     }

     /**
      * 分离出包名、版本等信息。
      *
      * @param apkInfo
      * @param packageSource
      */
     private void splitPackageInfo(ApkInfo apkInfo, String packageSource) {
         String[] packageInfo = packageSource.split(SPLIT_REGEX);
         apkInfo.setPackageName(packageInfo[2]);
         apkInfo.setVersionCode(packageInfo[4]);
         apkInfo.setVersionName(packageInfo[6]);
     }

     /**
      * 释放资源。
      *
      * @param c
      *            将关闭的资源
      */
     private final void closeIO(Closeable c) {
         if (c != null) {
             try {
                 c.close();
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
     }

     public static void main(String[] args) {
         try {
             ApkInfo apkInfo = new ApkUtil().getApkInfo(apkPath);
             System.out.println(apkInfo);
             IconUtil.extractFileFromApk(apkPath, apkInfo.getApplicationIcon(),
                     "D:\\icon.png");
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

     public String getmAaptPath() {
         return mAaptPath;
     }

     public void setmAaptPath(String mAaptPath) {
         this.mAaptPath = mAaptPath;
     }

     // 取得文件大小
     public static long getFileSizes(File f) throws Exception {
         long s = 0;
         if (f.exists()) {
             FileInputStream fis = null;
             fis = new FileInputStream(f);
             s = fis.available();
         } else {
             System.out.println("文件不存在");
         }
         return s;
     }
 }

上面加上阴影的部分代码，我想基本都是很好理解的，获取当前运行的操作系统类型，适配上相应的指令和软件，这样可以跨平台操作，而不需要修改代码；

获取到相应软件后，对apk文件一行一行的进行解析，将相应的属性存到javaBean中，并将apk文件图片通过流的方式写出到文件系统中,

package com.apkutils;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * 通过ApkInfo 里的applicationIcon从APK里解压出icon图片并存放到磁盘上
 * @author @author tony
 */
public class IconUtil {

    /**
     * 从指定的apk文件里获取指定file的流
     * @param apkpath
     * @param fileName
     * @return
     */
    public static InputStream extractFileFromApk(String apkpath, String fileName) {
        try {
            ZipFile zFile = new ZipFile(apkpath);
            ZipEntry entry = zFile.getEntry(fileName);
            entry.getComment();
            entry.getCompressedSize();
            entry.getCrc();
            entry.isDirectory();
            entry.getSize();
            entry.getMethod();
            InputStream stream = zFile.getInputStream(entry);
            return stream;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void extractFileFromApk(String apkpath, String fileName, String outputPath) throws Exception {
        InputStream is = extractFileFromApk(apkpath, fileName);

        File file = new File(outputPath);
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file), 1024);
        byte[] b = new byte[1024];
        BufferedInputStream bis = new BufferedInputStream(is, 1024);
        while(bis.read(b) != -1){
            bos.write(b);
        }
        bos.flush();
        is.close();
        bis.close();
        bos.close();
    }
}

这里没什么好说的，就是用JavaIO中zip的方式解析文件，并拿出图标写出到指定文件目录

参考文献 :

纯java从apk文件里获取包名、版本号、icon