使用proguard混淆java web项目代码

1.首先下载proGuard.zip到本地: proguard4.5beta4.tar.zip解压开,
2.新建文本文档,修改文件名为XXX.pro,然后复制下面内容到.pro

-injars 'Y:src.jar' #需要混淆的jar
-outjars 'Y:javasrc.jar' #输出jar
-libraryjars 'C:javajre6lib
t.jar' #必须的系统类库
-libraryjars 'Y:kfWebRootWEB-INFlibactivation-1.1.jar' #项目需要的jar
-libraryjars 'Y:kfWebRootWEB-INFlibant.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibantlr-2.7.6.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibasm-attrs.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibasm.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibaspectjrt.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibaspectjweaver.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibaxis-ant.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibaxis.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibackport-util-concurrent.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibsf-2.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibsh-2.0b4.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibc3p0-0.9.1.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcfgatewayadapter.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcglib-2.1.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibckeditor-java-core-3.5.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibCKFinder-2.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibCKFinderPlugin-FileEditor-2.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibCKFinderPlugin-ImageResize-2.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcmpp3.0-java.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-attributes-api.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-attributes-compiler.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-beanutils-1.8.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-codec-1.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-collections-3.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-configuration-1.6.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-dbcp-1.2.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-discovery-0.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-fileupload-1.2.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-io-2.0.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-lang-2.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-logging-1.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-logging-api-1.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-pool.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibcommons-validator-1.3.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibconcurrent.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibdom4j-1.6.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibdwr.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibehcache-1.5.0.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibejb3-persistence.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibfckeditor-java-core-2.4.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibfreemarker-2.3.15.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibgeneric-hession-api-0109.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibgson-1.7.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibhessian-4.0.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibhibernate-annotations.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibhibernate-commons-annotations.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibhibernate-entitymanager.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibhibernate-validator.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibhibernate3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibim4java-1.3.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjackson-core-asl-1.3.0.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjackson-mapper-asl-1.3.0.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjakarta-oro-2.0.8.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibJava2Word.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjavassist-3.4.GA.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjaxrpc.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjboss-archive-browsing.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjdbc2_0-stdext.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjdom.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjetty-6.1.24.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjetty-plus-6.1.24.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjetty-util-6.1.24.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjsf-api.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjsf-impl.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjson-lib-2.3-jdk15.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjson_simple-1.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjstl-1.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjstl-api-1.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjstl-impl-1.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjta.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjtds-1.2.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibjunit.jar'
-libraryjars 'Y:kfWebRootWEB-INFliblog4j-1.2.15.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibmail-1.4.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibmysql-connector-java-5.1.22-bin.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibognl-2.7.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibojdbc5.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibp6spy.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibpager-taglib.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibpoi-3.6-20091214.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibquartz-all-1.6.6.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibservlet-api-2.5-20081211.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibSimpleAPI.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibsitemesh-2.3.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibslf4j-api-1.5.8.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibslf4j-log4j12-1.5.8.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibspring.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstandard.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstruts2-core-2.1.8.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstruts2-dojo-plugin-2.1.8.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstruts2-json-plugin-2.3.1.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstruts2-sitemesh-plugin-2.1.8.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstruts2-spring-plugin-2.1.8.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibstruts2-sunspoter-stream-1.0.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibThumbnailator-0.3.10.jar'
-libraryjars 'Y:kfWebRootWEB-INFliburlrewrite-2.6.0.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibvelocity-1.7.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibvelocity-tools-2.0.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibwsdl4j-1.5.1.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibxalan.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibxstream-1.2.2.jar'
-libraryjars 'Y:kfWebRootWEB-INFlibxwork-core-2.1.6.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libannotations-api.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libcatalina-ant.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libcatalina-ha.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libcatalina-tribes.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libcatalina.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libecj-3.7.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libel-api.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libjasper-el.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libjasper.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libjsp-api.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21libservlet-api.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-api.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-coyote.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-dbcp.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-i18n-es.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-i18n-fr.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-i18n-ja.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-jdbc.jar'
-libraryjars 'D:javaapache-tomcat-7.0.21lib	omcat-util.jar'

-dontskipnonpubliclibraryclassmembers
-target 1.5
-dontshrink
-dontoptimize
-useuniqueclassmembernames
-keeppackagenames
-keepattributes
Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,LocalVariable*Table,
*Annotation*,Synthetic,EnclosingMethod
-keepparameternames
-dontpreverify
-dontwarn
-ignorewarnings
#不混淆lib下jar包里面的class文件
-keep class WebRoot.WEB-INFO.lib.*
#不混淆action包里面的类名,字段名,方法名
#在界面上会用到这些字段和getset方法
-keepnames class **.kf.**.action.**{
    public private protected <fields>;
    public <methods>;
}
-keepnames class **.kf.**.dao.**{
}
-keepnames class **.kf.**.service.**{
}

-keep class * extends org.springframework.orm.hibernate3.support.HibernateDaoSupport {
    public <methods>;
}
#不混淆实体的字段和方法,jsp的表单里面会有这些属性的值,混淆之后,会出现无法提交表单情况
-keep class **.entity.** {
    public private protected <fields>;
    public <methods>;
}

# Keep names - Native method names. Keep all native class/method names.
-keepclasseswithmembers,allowshrinking class * {
    native <methods>;
}
# Keep names - _class method names. Keep all .class method names. This may be
# useful for libraries that will be obfuscated again with different obfuscators.
-keepclassmembers,allowshrinking class * {
    java.lang.Class class$(java.lang.String);
    java.lang.Class class$(java.lang.String,boolean);
}
# Remove - System method calls. Remove all invocations of System
# methods without side effects whose return values are not used.
-assumenosideeffects public class java.lang.System {
    public static long currentTimeMillis();
    static java.lang.Class getCallerClass();
    public static int identityHashCode(java.lang.Object);
    public static java.lang.SecurityManager getSecurityManager();
    public static java.util.Properties getProperties();
    public static java.lang.String getProperty(java.lang.String);
    public static java.lang.String getenv(java.lang.String);
    public static java.lang.String mapLibraryName(java.lang.String);
    public static java.lang.String getProperty(java.lang.String,java.lang.String);
}
# Remove - Math method calls. Remove all invocations of Math
# methods without side effects whose return values are not used.
-assumenosideeffects public class java.lang.Math { 
    public static double sin(double); 
    public static double cos(double); 
    public static double tan(double); 
    public static double asin(double); 
    public static double acos(double); 
    public static double atan(double); 
    public static double toRadians(double); 
    public static double toDegrees(double); 
    public static double exp(double); 
    public static double log(double); 
    public static double log10(double); 
    public static double sqrt(double);
    public static double cbrt(double);
    public static double IEEEremainder(double,double); 
    public static double ceil(double); 
    public static double floor(double); 
    public static double rint(double); 
    public static double atan2(double,double); 
    public static double pow(double,double); 
    public static int round(float); 
    public static long round(double); 
    public static double random(); 
    public static int abs(int); 
    public static long abs(long); 
    public static float abs(float); 
    public static double abs(double); 
    public static int max(int,int); 
    public static long max(long,long); 
    public static float max(float,float); 
    public static double max(double,double); 
    public static int min(int,int); 
    public static long min(long,long); 
    public static float min(float,float); 
    public static double min(double,double); 
    public static double ulp(double); 
    public static float ulp(float); 
    public static double signum(double); 
    public static float signum(float); 
    public static double sinh(double); 
    public static double cosh(double); 
    public static double tanh(double); 
    public static double hypot(double,double); 
    public static double expm1(double); 
    public static double log1p(double); 
}

# Remove - Number method calls. Remove all invocations of Number 
# methods without side effects whose return values are not used. 
-assumenosideeffects public class java.lang.* extends java.lang.Number { 
    public static java.lang.String toString(byte); 
    public static java.lang.Byte valueOf(byte); 
    public static byte parseByte(java.lang.String); 
    public static byte parseByte(java.lang.String,int); 
    public static java.lang.Byte valueOf(java.lang.String,int); 
    public static java.lang.Byte valueOf(java.lang.String); 
    public static java.lang.Byte decode(java.lang.String);
    public int compareTo(java.lang.Byte); 
    public static java.lang.String toString(short); 
    public static short parseShort(java.lang.String); 
    public static short parseShort(java.lang.String,int); 
    public static java.lang.Short valueOf(java.lang.String,int); 
    public static java.lang.Short valueOf(java.lang.String); 
    public static java.lang.Short valueOf(short); 
    public static java.lang.Short decode(java.lang.String); 
    public static short reverseBytes(short); 
    public int compareTo(java.lang.Short); 
    public static java.lang.String toString(int,int); 
    public static java.lang.String toHexString(int); 
    public static java.lang.String toOctalString(int); 
    public static java.lang.String toBinaryString(int); 
    public static java.lang.String toString(int); 
    public static int parseInt(java.lang.String,int); 
    public static int parseInt(java.lang.String);
    public static java.lang.Integer valueOf(java.lang.String,int); 
    public static java.lang.Integer valueOf(java.lang.String); 
    public static java.lang.Integer valueOf(int);
    public static java.lang.Integer getInteger(java.lang.String); 
    public static java.lang.Integer getInteger(java.lang.String,int);
    public static java.lang.Integer getInteger(java.lang.String,java.lang.Integer); 
    public static java.lang.Integer decode(java.lang.String);
    public static int highestOneBit(int); 
    public static int lowestOneBit(int);
    public static int numberOfLeadingZeros(int); 
    public static int numberOfTrailingZeros(int); 
    public static int bitCount(int); 
    public static int rotateLeft(int,int); 
    public static int rotateRight(int,int); 
    public static int reverse(int); 
    public static int signum(int); 
    public static int reverseBytes(int); 
    public int compareTo(java.lang.Integer); 
    public static java.lang.String toString(long,int); 
    public static java.lang.String toHexString(long); 
    public static java.lang.String toOctalString(long); 
    public static java.lang.String toBinaryString(long); 
    public static java.lang.String toString(long); 
    public static long parseLong(java.lang.String,int); 
    public static long parseLong(java.lang.String);
    public static java.lang.Long valueOf(java.lang.String,int); 
    public static java.lang.Long valueOf(java.lang.String);
    public static java.lang.Long valueOf(long);
    public static java.lang.Long decode(java.lang.String); 
    public static java.lang.Long getLong(java.lang.String); 
    public static java.lang.Long getLong(java.lang.String,long);
    public static java.lang.Long getLong(java.lang.String,java.lang.Long); 
    public static long highestOneBit(long); 
    public static long lowestOneBit(long); 
    public static int numberOfLeadingZeros(long); 
    public static int numberOfTrailingZeros(long); 
    public static int bitCount(long); 
    public static long rotateLeft(long,int); 
    public static long rotateRight(long,int); 
    public static long reverse(long); 
    public static int signum(long); 
    public static long reverseBytes(long); 
    public int compareTo(java.lang.Long); 
    public static java.lang.String toString(float); 
    public static java.lang.String toHexString(float); 
    public static java.lang.Float valueOf(java.lang.String); 
    public static java.lang.Float valueOf(float); 
    public static float parseFloat(java.lang.String); 
    public static boolean isNaN(float); 
    public static boolean isInfinite(float); 
    public static int floatToIntBits(float); 
    public static int floatToRawIntBits(float); 
    public static float intBitsToFloat(int); 
    public static int compare(float,float); 
    public boolean isNaN(); 
    public boolean isInfinite();
    public int compareTo(java.lang.Float); 
    public static java.lang.String toString(double); 
    public static java.lang.String toHexString(double); 
    public static java.lang.Double valueOf(java.lang.String); 
    public static java.lang.Double valueOf(double); 
    public static double parseDouble(java.lang.String); 
    public static boolean isNaN(double); 
    public static boolean isInfinite(double); 
    public static long doubleToLongBits(double); 
    public static long doubleToRawLongBits(double); 
    public static double longBitsToDouble(long); 
    public static int compare(double,double); 
    public boolean isNaN(); 
    public boolean isInfinite();
    public int compareTo(java.lang.Double);
    public <init>(byte); 
    public <init>(short); 
    public <init>(int); 
    public <init>(long); 
    public <init>(float); 
    public <init>(double); 
    public <init>(java.lang.String); 
    public byte byteValue(); 
    public short shortValue(); 
    public int intValue(); 
    public long longValue(); 
    public float floatValue(); 
    public double doubleValue();
    public int compareTo(java.lang.Object); 
    public boolean equals(java.lang.Object); 
    public int hashCode();
    public java.lang.String toString(); 
}

# Remove - String method calls. Remove all invocations of String # methods without side effects whose return values are not used. 
-assumenosideeffects public class java.lang.String { 
    public <init>(); 
    public <init>(byte[]); 
    public <init>(byte[],int); 
    public <init>(byte[],int,int); 
    public <init>(byte[],int,int,int);
    public <init>(byte[],int,int,java.lang.String); 
    public <init>(byte[],java.lang.String); 
    public <init>(char[]); 
    public <init>(char[],int,int); 
    public <init>(java.lang.String); 
    public <init>(java.lang.StringBuffer);
    public static java.lang.String copyValueOf(char[]); 
    public static java.lang.String copyValueOf(char[],int,int); 
    public static java.lang.String valueOf(boolean); 
    public static java.lang.String valueOf(char); 
    public static java.lang.String valueOf(char[]); 
    public static java.lang.String valueOf(char[],int,int); 
    public static java.lang.String valueOf(double); 
    public static java.lang.String valueOf(float); 
    public static java.lang.String valueOf(int);
    public static java.lang.String valueOf(java.lang.Object); 
    public static java.lang.String valueOf(long); 
    public boolean contentEquals(java.lang.StringBuffer); 
    public boolean endsWith(java.lang.String); 
    public boolean equalsIgnoreCase(java.lang.String); 
    public boolean equals(java.lang.Object); 
    public boolean matches(java.lang.String);
    public boolean regionMatches(boolean,int,java.lang.String,int,int); 
    public boolean regionMatches(int,java.lang.String,int,int); 
    public boolean startsWith(java.lang.String); 
    public boolean startsWith(java.lang.String,int); 
    public byte[] getBytes();
    public byte[] getBytes(java.lang.String); 
    public char charAt(int); 
    public char[] toCharArray();
    public int compareToIgnoreCase(java.lang.String); 
    public int compareTo(java.lang.Object); 
    public int compareTo(java.lang.String); 
    public int hashCode(); 
    public int indexOf(int); 
    public int indexOf(int,int); 
    public int indexOf(java.lang.String); 
    public int indexOf(java.lang.String,int); 
    public int lastIndexOf(int); 
    public int lastIndexOf(int,int); 
    public int lastIndexOf(java.lang.String); 
    public int lastIndexOf(java.lang.String,int); 
    public int length();
    public java.lang.CharSequence subSequence(int,int); 
    public java.lang.String concat(java.lang.String);
    public java.lang.String replaceAll(java.lang.String,java.lang.String); 
    public java.lang.String replace(char,char);
    public java.lang.String replaceFirst(java.lang.String,java.lang.String); 
    public java.lang.String[] split(java.lang.String); 
    public java.lang.String[] split(java.lang.String,int); 
    public java.lang.String substring(int); 
    public java.lang.String substring(int,int); 
    public java.lang.String toLowerCase();
    public java.lang.String toLowerCase(java.util.Locale); 
    public java.lang.String toString(); 
    public java.lang.String toUpperCase();
    public java.lang.String toUpperCase(java.util.Locale); 
    public java.lang.String trim();
}

# Remove - StringBuffer method calls. Remove all invocations of StringBuffer
# methods without side effects whose return values are not used. 
-assumenosideeffects public class java.lang.StringBuffer { 
    public <init>(); 
    public <init>(int);
    public <init>(java.lang.String); 
    public <init>(java.lang.CharSequence); 
    public java.lang.String toString(); 
    public char charAt(int); 
    public int capacity(); 
    public int codePointAt(int); 
    public int codePointBefore(int); 
    public int indexOf(java.lang.String,int); 
    public int lastIndexOf(java.lang.String); 
    public int lastIndexOf(java.lang.String,int); 
    public int length();
    public java.lang.String substring(int); 
    public java.lang.String substring(int,int); 
}

# Remove - StringBuilder method calls. Remove all invocations of StringBuilder # methods without side effects whose return values are not used. 
-assumenosideeffects public class java.lang.StringBuilder { 
    public <init>(); 
    public <init>(int);
    public <init>(java.lang.String); 
    public <init>(java.lang.CharSequence); 
    public java.lang.String toString(); 
    public char charAt(int); 
    public int capacity(); 
    public int codePointAt(int); 
    public int codePointBefore(int); 
    public int indexOf(java.lang.String,int); 
    public int lastIndexOf(java.lang.String); 
    public int lastIndexOf(java.lang.String,int); 
    public int length();
    public java.lang.String substring(int); 
    public java.lang.String substring(int,int); 
} 

 这段话是在网上找的,拼凑一下,能用...
修改上面的-injars,-outjars,-libraryjars路径等

3.开始->运行->输入"cmd"->输入"java -Xms256m -Xmx512m -jar D:javaproguard4.5beta4libproguard.jar @D:javaproguard4.5beta4kfwggl.pro"
不带引号,"D:javaproguard4.5beta4libproguard.jar"这个是proguard的jar路径,参照着填写自己的路径
"@D:javaproguard4.5beta4kfwggl.pro"这个是上面新建的文本文档的路径
然后回车,可能会有些错误,根据提示修改,成功例子:


上图红线圈着的,表示混淆成功,输出jar在Y:javasrc.jar