如何将已编辑的 java 文件编译成作为包一部分的类类文件 [与 Minecraft 相关]答案

【问题标题】：How to compile an edited java file into a class class file that's a part of a package [Related to Minecraft]如何将已编辑的 java 文件编译成作为包一部分的类类文件 [与 Minecraft 相关]
【发布时间】：2017-05-03 15:51:14
【问题描述】：

所以我试图编辑一个 .jar 文件中的类文件（.jar 文件还有一些其他类，但我只是想编辑这个）。我为这个特定的类使用了源 .java，但我无法将它编译成一个类，因为编译器会调用错误，因为它是从包中调用东西。

有人知道问题出在哪里吗？

或者，如果有人知道有一个程序可以让我直接编辑 .jar 文件中的 .class 文件的代码，而无需进行所有的反编译和重新编译，那将非常有帮助。

额外信息

.jar 文件是我为朋友准备的 Minecraft 模组。

原始 .class 的代码（有效）：

package pw.cinque.cpsmod;
import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.TickEvent;
import cpw.mods.fml.common.gameevent.TickEvent$ClientTickEvent;
import net.minecraftforge.client.event.MouseEvent;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.TickEvent;
import net.minecraftforge.client.event.MouseEvent;
import pw.cinque.cpsmod.CPSMod;

public class ClickListener
{
  public ClickListener() {}

  private boolean hasClickedThisTick = false;

  @cpw.mods.fml.common.eventhandler.SubscribeEvent
  public void onMouse(MouseEvent event) {
    if (button != 0) {
      return;
    }

    if ((CPSMod.preventDoubleclicks) && (buttonstate) && (hasClickedThisTick)) {
      event.setCanceled(true);
      return;
    }

    if (buttonstate) {
      hasClickedThisTick = true;
      CPSMod.addClick();
    }
  }

  @cpw.mods.fml.common.eventhandler.SubscribeEvent
  public void onClientTick(cpw.mods.fml.common.gameevent.TickEvent.ClientTickEvent event) {
    hasClickedThisTick = false;
  }
}

我编辑的文件代码：

package pw.cinque.cpsmod;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.TickEvent;
import cpw.mods.fml.common.gameevent.TickEvent$ClientTickEvent;
import net.minecraftforge.client.event.MouseEvent;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.TickEvent;
import net.minecraftforge.client.event.MouseEvent;
import pw.cinque.cpsmod.CPSMod;

public class ClickListener {
    private boolean hasClickedThisTick = false;
    int newVar = 0;
    @SubscribeEvent
    public void onMouse(MouseEvent event) {
        if (event.button != 0) {
            return;
        }
        if (CPSMod.preventDoubleclicks && event.buttonstate && this.hasClickedThisTick) {
            event.setCanceled(true);
            return;
        }
        if (event.buttonstate) 
        {
            this.hasClickedThisTick = true;
            CPSMod.addClick();
            newVar = CPSMod.getClicks();            
            if(newVar > 5)
            {
    CPSMod.addClick();

    }
}
}

@SubscribeEvent
public void onClientTick(TickEvent.ClientTickEvent event) {
    this.hasClickedThisTick = false;
}
}

这些是我尝试编译时收到的错误消息。

ClickListener.java:2: error: package cpw.mods.fml.common.eventhandler does not exist
     import cpw.mods.fml.common.eventhandler.SubscribeEvent;
                                            ^
ClickListener.java:3: error: package cpw.mods.fml.common.gameevent does not exist
     import cpw.mods.fml.common.gameevent.TickEvent;
                                         ^
ClickListener.java:4: error: package cpw.mods.fml.common.gameevent does not exist
     import cpw.mods.fml.common.gameevent.TickEvent$ClientTickEvent;
                                         ^
ClickListener.java:5: error: package net.minecraftforge.client.event does not exist
     import net.minecraftforge.client.event.MouseEvent;
                                           ^
ClickListener.java:7: error: package cpw.mods.fml.common.eventhandler does not exist
import cpw.mods.fml.common.eventhandler.SubscribeEvent;
                                       ^
ClickListener.java:8: error: package cpw.mods.fml.common.gameevent does not exist
import cpw.mods.fml.common.gameevent.TickEvent;
                                    ^
ClickListener.java:9: error: package net.minecraftforge.client.event does not exist
import net.minecraftforge.client.event.MouseEvent;
                                      ^
ClickListener.java:10: error: cannot find symbol
import pw.cinque.cpsmod.CPSMod;
                       ^
  symbol:   class CPSMod
  location: package pw.cinque.cpsmod
ClickListener.java:17: error: cannot find symbol
    public void onMouse(MouseEvent event) {
                        ^
  symbol:   class MouseEvent
  location: class ClickListener
ClickListener.java:40: error: package TickEvent does not exist
    public void onClientTick(TickEvent.ClientTickEvent event) {
                                      ^
ClickListener.java:16: error: cannot find symbol
    @SubscribeEvent
     ^
  symbol:   class SubscribeEvent
  location: class ClickListener
ClickListener.java:39: error: cannot find symbol
    @SubscribeEvent
     ^
  symbol:   class SubscribeEvent
  location: class ClickListener
ClickListener.java:21: error: cannot find symbol
        if (CPSMod.preventDoubleclicks && event.buttonstate && this.hasClickedThisTick) {
            ^
  symbol:   variable CPSMod
  location: class ClickListener
ClickListener.java:25: error: illegal start of type
        if (event.buttonstate) {
           ^
ClickListener.java:27: error: cannot find symbol
            CPSMod.addClick();
            ^
  symbol:   variable CPSMod
  location: class ClickListener
ClickListener.java:28: error: cannot find symbol
      gay = CPSMod.getClicks();
            ^
  symbol:   variable CPSMod
  location: class ClickListener
ClickListener.java:33: error: cannot find symbol
          CPSMod.addClick();
          ^
  symbol:   variable CPSMod
  location: class ClickListener
17 errors

【问题讨论】：

标签： java class jar compilation

【解决方案1】：

您需要编译该类及其所有依赖项，否则它将无法工作。可能你应该从那个 .jar 中获取所有文件，进行你想要的修改，然后再次编译和压缩它。

【讨论】：