静态常量不能反编译

yjzagan2003

浏览: 37110 次
性别:
来自: 济南

最近访客更多访客>>

壹亻憔悴

dengqw

xinqing558

羊小仙

博主相关

博客

微博

相册

留言

关于我

文章分类

社区版块

存档分类

博客分类：

java

近期项目中需要反编译修改多年前的class文件，经过反编译并修改后，用Eclipse编译和java命令行得到的class文件不同，对新class文件反编译后如下：

用Eclipse编译的class文件反编译：

package com.langchao.kpiengine.builder.baskpi;
import com.langchao.kpiengine.model.common.BasDimensionType;
import com.langchao.kpiengine.model.common.Kpi;
import com.langchao.kpiengine.model.common.KpiRelation;
import com.langchao.kpiengine.model.common.UnitKpi;
import com.langchao.kpiengine.search.BasKpiDefine;
import com.langchao.kpiengine.util.KpiConfigHelper;
import com.langchao.kpiengine.xml.digester.DigesterUtil;
import com.langchao.kpiengine.xml.digester.KpiDigester;
import com.langchao.kpiengine.xml.digester.KpiDigesterFactory;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class BasKpiDefineDaoXmlImpl
  implements BasKpiDefineDao
{
  private static Log log = LogFactory.getLog("KpiQueryService");
  public static final String RULE_CONFIG;
  public static final String DEFINE_CONFIG;
  private BasKpiDefine basKpiDefine;
  static Class class$0;

  // ERROR //
  static
  {
    // Byte code:
    //   0: ldc 20
    //   2: invokestatic 22	org/apache/commons/logging/LogFactory:getLog	(Ljava/lang/String;)Lorg/apache/commons/logging/Log;
    //   5: putstatic 28	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:log	Lorg/apache/commons/logging/Log;
    //   8: new 30	java/lang/StringBuffer
    //   11: dup
    //   12: getstatic 32	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:class$0	Ljava/lang/Class;
    //   15: dup
    //   16: ifnonnull +28 -> 44
    //   19: pop
    //   20: ldc 34
    //   22: invokestatic 36	java/lang/Class:forName	(Ljava/lang/String;)Ljava/lang/Class;
    //   25: dup
    //   26: putstatic 32	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:class$0	Ljava/lang/Class;
    //   29: goto +15 -> 44
    //   32: new 42	java/lang/NoClassDefFoundError
    //   35: dup_x1
    //   36: swap
    //   37: invokevirtual 44	java/lang/Throwable:getMessage	()Ljava/lang/String;
    //   40: invokespecial 50	java/lang/NoClassDefFoundError:<init>	(Ljava/lang/String;)V
    //   43: athrow
    //   44: invokevirtual 54	java/lang/Class:getPackage	()Ljava/lang/Package;
    //   47: invokevirtual 58	java/lang/Package:getName	()Ljava/lang/String;
    //   50: invokestatic 63	java/lang/String:valueOf	(Ljava/lang/Object;)Ljava/lang/String;
    //   53: invokespecial 69	java/lang/StringBuffer:<init>	(Ljava/lang/String;)V
    //   56: ldc 70
    //   58: invokevirtual 72	java/lang/StringBuffer:append	(Ljava/lang/String;)Ljava/lang/StringBuffer;
    //   61: invokevirtual 76	java/lang/StringBuffer:toString	()Ljava/lang/String;
    //   64: putstatic 79	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:RULE_CONFIG	Ljava/lang/String;
    //   67: new 30	java/lang/StringBuffer
    //   70: dup
    //   71: getstatic 32	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:class$0	Ljava/lang/Class;
    //   74: dup
    //   75: ifnonnull +28 -> 103
    //   78: pop
    //   79: ldc 34
    //   81: invokestatic 36	java/lang/Class:forName	(Ljava/lang/String;)Ljava/lang/Class;
    //   84: dup
    //   85: putstatic 32	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:class$0	Ljava/lang/Class;
    //   88: goto +15 -> 103
    //   91: new 42	java/lang/NoClassDefFoundError
    //   94: dup_x1
    //   95: swap
    //   96: invokevirtual 44	java/lang/Throwable:getMessage	()Ljava/lang/String;
    //   99: invokespecial 50	java/lang/NoClassDefFoundError:<init>	(Ljava/lang/String;)V
    //   102: athrow
    //   103: invokevirtual 81	java/lang/Class:getName	()Ljava/lang/String;
    //   106: invokestatic 63	java/lang/String:valueOf	(Ljava/lang/Object;)Ljava/lang/String;
    //   109: invokespecial 69	java/lang/StringBuffer:<init>	(Ljava/lang/String;)V
    //   112: ldc 82
    //   114: invokevirtual 72	java/lang/StringBuffer:append	(Ljava/lang/String;)Ljava/lang/StringBuffer;
    //   117: invokevirtual 76	java/lang/StringBuffer:toString	()Ljava/lang/String;
    //   120: putstatic 84	com/langchao/kpiengine/builder/baskpi/BasKpiDefineDaoXmlImpl:DEFINE_CONFIG	Ljava/lang/String;
    //   123: return
    //
    // Exception table:
    //   from	to	target	type
    //   20	25	32	java/lang/ClassNotFoundException
    //   79	84	91	java/lang/ClassNotFoundException
}

用java命令行执行（如图）：

C:\j2sdk1.4.2_16\bin>javac

–classpath .;kpimodelbuild.jar;commons-logging.jar;kpimodel.jar;commons-digester.jar;sax.jar;zhibiaoutil.jar

BasKpiDefineDaoXmlImpl.java

对用命令行新生成的class反编译：

package com.langchao.kpiengine.builder.baskpi;

import com.langchao.kpiengine.model.common.BasDimensionType;
import com.langchao.kpiengine.model.common.Kpi;
import com.langchao.kpiengine.model.common.KpiRelation;
import com.langchao.kpiengine.model.common.UnitKpi;
import com.langchao.kpiengine.search.BasKpiDefine;
import com.langchao.kpiengine.util.KpiConfigHelper;
import com.langchao.kpiengine.xml.digester.DigesterUtil;
import com.langchao.kpiengine.xml.digester.KpiDigester;
import com.langchao.kpiengine.xml.digester.KpiDigesterFactory;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class BasKpiDefineDaoXmlImpl
  implements BasKpiDefineDao
{
  private static Log log = LogFactory.getLog("KpiQueryService");
  public static final String RULE_CONFIG = BasKpiDefineDaoXmlImpl.class.getPackage().getName() + ".ruleconfig";
  public static final String DEFINE_CONFIG = BasKpiDefineDaoXmlImpl.class.getName() + ".defineconfig";
  private BasKpiDefine basKpiDefine;

经比对，Eclipse生成的对应的public static final String 静态常量的值在反编译后都没有了，而使用java命令行的反编译后正常。

问题找到了，但是原因未知。