如何在没有反编译的情况下更改已编译的

如何在没有反编译的情况下更改已编译的

本文介绍了如何在没有反编译的情况下更改已编译的.class文件?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我想更改.class文件的方法。我安装了JD Eclipse Decompiler并打开了.class文件。我添加了一些代码并保存.class文件。但是,.class文件没有改变。

I want to change .class file's method. I installed JD Eclipse Decompiler and opened the .class file. I added some codes and save .class file. But, .class file is not changing.

我不知道如何使用反编译器。如果可能的话,如何在不使用反编译器的情况下更改.class文件。

I don't know how to use decompiler. And if is it possible, how to change .class file without using decompiler.

我正在使用Ubuntu。

I am using Ubuntu.

问候

编辑:

这是我的反编译代码:

/*     */ package org.hibernate.id;
/*     */
/*     */ import java.io.Serializable;
/*     */ import java.sql.ResultSet;
/*     */ import java.sql.SQLException;
/*     */ import java.util.HashMap;
/*     */ import java.util.Properties;
/*     */ import org.apache.commons.logging.Log;
/*     */ import org.apache.commons.logging.LogFactory;
/*     */ import org.hibernate.HibernateException;
/*     */ import org.hibernate.MappingException;
/*     */ import org.hibernate.dialect.Dialect;
/*     */ import org.hibernate.type.Type;
/*     */ import org.hibernate.util.ReflectHelper;
/*     */
/*     */ public final class IdentifierGeneratorFactory
/*     */ {
/*  25 */   private static final Log log = LogFactory.getLog(IdentifierGeneratorFactory.class);
/*     */
/*  64 */   private static final HashMap GENERATORS = new HashMap();
/*     */
/*  66 */   public static final Serializable SHORT_CIRCUIT_INDICATOR = new Serializable() {
/*     */     public String toString() { return "SHORT_CIRCUIT_INDICATOR";
/*     */     }
/*  66 */   };
/*     */
/*  70 */   public static final Serializable POST_INSERT_INDICATOR = new Serializable() {
/*     */     public String toString() { return "POST_INSERT_INDICATOR";
/*     */     }
/*  70 */   };
/*     */
/*     */   public static Serializable getGeneratedIdentity(ResultSet rs, Type type)
/*     */     throws SQLException, HibernateException, IdentifierGenerationException
/*     */   {
/*  32 */     if (!(rs.next())) {
/*  33 */       throw new HibernateException("The database returned no natively generated identity value");
/*     */     }
/*  35 */     Serializable id = get(rs, type);
/*     */
/*  37 */     if (log.isDebugEnabled()) log.debug("Natively generated identity: " + id);
/*  38 */     return id;
/*     */   }
/*     */
/*     */   public static Serializable get(ResultSet rs, Type type)
/*     */     throws SQLException, IdentifierGenerationException
/*     */   {
/*  45 */     Class clazz = type.getReturnedClass();
/*  46 */     if (clazz == Long.class) {
/*  47 */       return new Long(rs.getLong(1));
/*     */     }
/*  49 */     if (clazz == Integer.class) {
/*  50 */       return new Integer(rs.getInt(1));
/*     */     }
/*  52 */     if (clazz == Short.class) {
/*  53 */       return new Short(rs.getShort(1));
/*     */     }
/*  55 */     if (clazz == String.class) {
/*  56 */       return rs.getString(1);
/*     */     }
                if(clazz == java.math.BigDecimal.class){
                    return rs.getBigDecimal(1);
                }
/*     */
/*  59 */     throw new IdentifierGenerationException("this id generator generates long, integer, short or string78");
/*     */   }
/*     */
/*     */   public static IdentifierGenerator create(String strategy, Type type, Properties params, Dialect dialect)
/*     */     throws MappingException
/*     */   {
/*     */     try
/*     */     {
/*  92 */       Class clazz = getIdentifierGeneratorClass(strategy, dialect);
/*  93 */       IdentifierGenerator idgen = (IdentifierGenerator)clazz.newInstance();
/*  94 */       if (idgen instanceof Configurable) ((Configurable)idgen).configure(type, params, dialect);
/*  95 */       return idgen;
/*     */     }
/*     */     catch (Exception e) {
/*  98 */       throw new MappingException("could not instantiate id generator", e);
/*     */     }
/*     */   }
/*     */
/*     */   public static Class getIdentifierGeneratorClass(String strategy, Dialect dialect) {
/* 103 */     Class clazz = (Class)GENERATORS.get(strategy);
/* 104 */     if ("native".equals(strategy)) clazz = dialect.getNativeIdentifierGeneratorClass();
/*     */     try {
/* 106 */       if (clazz == null) clazz = ReflectHelper.classForName(strategy);
/*     */     }
/*     */     catch (ClassNotFoundException e) {
/* 109 */       throw new MappingException("could not interpret id generator strategy: " + strategy);
/*     */     }
/* 111 */     return clazz;
/*     */   }
/*     */
/*     */   public static Number createNumber(long value, Class clazz) throws IdentifierGenerationException {
/* 115 */     if (clazz == Long.class) {
/* 116 */       return new Long(value);
/*     */     }
/* 118 */     if (clazz == Integer.class) {
/* 119 */       return new Integer((int)value);
/*     */     }
/* 121 */     if (clazz == Short.class) {
/* 122 */       return new Short((short)(int)value);
/*     */     }

/*     */
/* 125 */     throw new IdentifierGenerationException("this id generator generates long, integer, short");
/*     */   }
/*     */
/*     */   static
/*     */   {
/*  75 */     GENERATORS.put("uuid", UUIDHexGenerator.class);
    GENERATORS.put("hilo", TableHiLoGenerator.class);
     GENERATORS.put("assigned", Assigned.class);
     GENERATORS.put("identity", IdentityGenerator.class);
    GENERATORS.put("select", SelectGenerator.class);
    GENERATORS.put("sequence", SequenceGenerator.class);
     GENERATORS.put("seqhilo", SequenceHiLoGenerator.class);
    GENERATORS.put("increment", IncrementGenerator.class);
   GENERATORS.put("foreign", ForeignGenerator.class);
     GENERATORS.put("guid", GUIDGenerator.class);
     GENERATORS.put("uuid.hex", UUIDHexGenerator.class);
     GENERATORS.put("sequence-identity", SequenceIdentityGenerator.class);
   }
 }


推荐答案

你可以按照以下步骤修改你的java类:

You can follow these steps to modify your java class:


  1. 像你一样反编译.class文件并将其另存为.java

  2. 使用该java文件在Eclipse中创建项目,将原始JAR
    作为库及其所有依赖项

  3. 更改.java并编译

  4. 获取修改后的.class文件并将其重新放入原始
    JAR中。

  1. Decompile the .class file as you have done and save it as .java
  2. Create a project in Eclipse with that java file, the original JARas library, and all its dependencies
  3. Change the .java and compile
  4. Get the modified .class file and put it again inside the originalJAR.

这篇关于如何在没有反编译的情况下更改已编译的.class文件?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-02 00:15