java代码混淆

如果你不想让别人知道你太多的实现细节，那么可以通过proguard对自己的代码进行混淆。jdk版本支持1.7，不支持jdk1.8.
下面是pom.xml中响应的配置，您在http://mvnrepository.com/中是找不到net.sf.proguard4.8的版本的，告诉大家一个地址：proguard48jar，这个地址不经可以下载proguard-4.8.jar，还可以下载其他的文件。也是偶然的机会，我才发现了此地址。

<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.pluginsgroupId>
				<artifactId>maven-resources-pluginartifactId>
			plugin>
			<plugin>
				<groupId>org.apache.maven.pluginsgroupId>
				<artifactId>maven-source-pluginartifactId>
				<executions>
					<execution>
						<phase>compilephase>
						<goals>
							<goal>jargoal>
						goals>
					execution>
				executions>
			plugin>
			<plugin>
				<groupId>org.apache.maven.pluginsgroupId>
				<artifactId>maven-compiler-pluginartifactId>
				<configuration>
					<encoding>UTF-8encoding>
					<source>${java.compile.version}source>
					<target>${java.compile.version}target>
				configuration>
			plugin>
			<plugin>
				<groupId>com.pyx4megroupId>
				<artifactId>proguard-maven-pluginartifactId>
				<executions>
					<execution>
						<phase>packagephase>
						<goals>
							<goal>proguardgoal>
						goals>
					execution>
				executions>
				<configuration>
					<obfuscate>trueobfuscate>
					<proguardInclude>${basedir}/proguard.confproguardInclude>
					<libs>
						<lib>D:/Program Files/Java/jre7/lib/rt.jarlib>
					libs>
					<addMavenDescriptor>falseaddMavenDescriptor>
				configuration>
				<dependencies>
					<dependency>
						<groupId>net.sf.proguardgroupId>
						<artifactId>proguardartifactId>
						<version>4.8version>
						<scope>runtimescope>
					dependency>
				dependencies>

			plugin>
		plugins>
	build>

注意下方的目录结构，在工程的根目录添加proguard.conf文件，这个文件就是混淆的配置信息

下面是proguard.conf的内容信息：

 #忽略警告信息 
ignorewarnings
#不做 shrink 
-dontshrink
#指定不去忽略包可见的库类的成员
-dontskipnonpubliclibraryclassmembers
#  通过指定数量的优化能执行
-optimizationpasses 3
#      指定不去忽略非公共的库类
-dontskipnonpubliclibraryclasses
#      输出生成信息
-verbose
#混淆时应用侵入式重载 
-overloadaggressively
#优化时允许访问并修改有修饰符的类和类的成员
-allowaccessmodification
#确定统一的混淆类的成员名称来增加混淆
-useuniqueclassmembernames
#这里添加你不需要混淆的类 
# --------- 保护类中的所有方法名 ------------ 
-keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,LocalVariable*Table,*Annotation*,Synthetic,EnclosingMethod

-keepclasseswithmembers public class * {
    public static void main(java.lang.String[]);
}

-keepclassmembers enum  * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

执行mvn install命令，执行后的日志

 [proguard]   Number of removed local variables:           3
 [proguard]   Number of removed exception blocks:          0
 [proguard]   Number of optimized local variable frames:   0
 [proguard] Obfuscating...
 [proguard] Printing mapping to [F:\ccbwork\dzmsoft-framework-base\target\proguard_map.txt]...
 [proguard] Preverifying...
 [proguard] Writing output...
 [proguard] Preparing output jar [F:\ccbwork\dzmsoft-framework-base\target\com.dzmsoft.framework.base-2.0.1.jar]
 [proguard]   Copying resources from program jar [F:\ccbwork\dzmsoft-framework-base\target\com.dzmsoft.framework.base-2.0.1_proguard_base.jar] (filtered)
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ com.dzmsoft.framework.base ---
[INFO] Installing F:\ccbwork\dzmsoft-framework-base\target\com.dzmsoft.framework.base-2.0.1.jar to D:\Program Files (x86)\apache-maven-3.1.1\repository\com\dzmsoft\com.dzmsoft.framework.base\2.0.1\com.dzmsoft.framework.base-2.0.1.jar
[INFO] Installing F:\ccbwork\dzmsoft-framework-base\pom.xml to D:\Program Files (x86)\apache-maven-3.1.1\repository\com\dzmsoft\com.dzmsoft.framework.base\2.0.1\com.dzmsoft.framework.base-2.0.1.pom
[INFO] Installing F:\ccbwork\dzmsoft-framework-base\target\com.dzmsoft.framework.base-2.0.1-sources.jar to D:\Program Files (x86)\apache-maven-3.1.1\repository\com\dzmsoft\com.dzmsoft.framework.base\2.0.1\com.dzmsoft.framework.base-2.0.1-sources.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS

通过jd-gui工具查看，混淆后的结果如下图所示，是不是很爽，不过这么混淆工具类，自己估计也会受不了，下一步就需要调优配置，既达到隐藏细节的作用，又还能方便使用。