唯爱她°
本帖最后由 唯爱她° 于 2020-5-7 17:24 编辑
  1. public void Playerdeadlosemoney(PlayerDeathEvent e){
  2.             autorespawnlistener.lose(e.getEntity().getPlayer(),money);
  3.     }
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  1. public static void lose(Player p,double money){

  3.             economy.withdrawPlayer(p, money);

  5.     }
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这个vault前置，怎么才能设置死亡扣钱呢！

  1. <div><pre style='font-family: "Consolas", courier; background: #ffffff'><span style="color: #000000;&#10;">MoneyCmd</span><span style="color: #000000;&#10;">.</span><span style="color: #000000;&#10;">take</span><span style="color: #000000;&#10;">(</span><span style="color: #000000;&#10;">e</span><span style="color: #000000;&#10;">.</span><span style="color: #000000;&#10;">getEntity</span><span style="color: #000000;&#10;">(</span><span style="color: #000000;&#10;">)</span><span style="color: #000000;&#10;">.</span><span style="color: #000000;&#10;">getName</span><span style="color: #000000;&#10;">(</span><span style="color: #000000;&#10;">)</span><span style="color: #000000;&#10;">,</span><span style="color: #000000;&#10;"> </span><span style="font-weight: bold;&#10;color: #7f0055;&#10;">this</span><span style="color: #000000;&#10;">.</span><span style="color: #000000;&#10;">money</span><span style="color: #000000;&#10;">)</span><span style="color: #000000;&#10;">;</span></pre><b></b><i></i><u></u><sub></sub><sup></sup><strike></strike>
  2. </div><div><b></b><i></i><u></u><sub></sub><sup></sup><strike></strike>
  3. </div><div>public static void take(String player, double money)</div><div><pre style='font-family: "Consolas", courier; background: #ffffff'><span style="color: #000000;&#10;">economy</span><span style="color: #000000;&#10;">.</span><span style="color: #000000;&#10;">withdrawPlayer</span><span style="color: #000000;&#10;">(</span><span style="color: #000000;&#10;">player</span><span style="color: #000000;&#10;">,</span><span style="color: #000000;&#10;"> </span><span style="color: #000000;&#10;">money</span><span style="color: #000000;&#10;">)</span><span style="color: #000000;&#10;">;</span></pre><b></b><i></i><u></u><sub></sub><sup></sup><strike></strike>
  4. </div>
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为啥我之前测试页视这样定义的player，但是他withdraPlayer是有横杠的，另外怎么再bbs里发那种有横杠的文字





出现了一个神奇的地方：我百度查为啥有横线，然后查到了一个@Deprecated 这个
加上后不出现横线了，这个是啥呢！



南柯郡守
https://www.mcbbs.net/thread-1037730-1-2.html
看这篇贴子
William_Shi
@Deprecated 是过时或废弃的注解

IDE贴心的提示你，为你加上了横线
你在方法前面加上这个注解
意思是你自己写的方法也是过时或废弃的
治标不治本
我建议看一下楼上的教程并使用不过时的方法


唯爱她°
南柯郡守 发表于 2020-5-7 17:44
https://www.mcbbs.net/thread-1037730-1-2.html
看这篇贴子
  1. Alove_ issued server command: /kill Alove_
  2. [19:21:26] [Server thread/ERROR]: Could not pass event PlayerDeathEvent to Losemoney v1.0-SNAPSHOT
  3. org.bukkit.event.EventException: null
  4.         at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  5.         at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  6.         at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:529) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  7.         at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:514) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  8.         at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:726) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  9.         at net.minecraft.server.v1_14_R1.EntityPlayer.die(EntityPlayer.java:519) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  10.         at net.minecraft.server.v1_14_R1.EntityLiving.damageEntity(EntityLiving.java:1169) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  11.         at net.minecraft.server.v1_14_R1.EntityHuman.damageEntity(EntityHuman.java:769) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  12.         at net.minecraft.server.v1_14_R1.EntityPlayer.damageEntity(EntityPlayer.java:674) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  13.         at org.bukkit.craftbukkit.v1_14_R1.entity.CraftLivingEntity.damage(CraftLivingEntity.java:245) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  14.         at org.bukkit.craftbukkit.v1_14_R1.entity.CraftLivingEntity.damage(CraftLivingEntity.java:232) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  15.         at com.earth2me.essentials.commands.Commandkill.updatePlayer(Commandkill.java:41) ~[?:?]
  16.         at com.earth2me.essentials.commands.EssentialsLoopCommand.loopOnlinePlayers(EssentialsLoopCommand.java:98) ~[?:?]
  17.         at com.earth2me.essentials.commands.Commandkill.run(Commandkill.java:26) ~[?:?]
  18.         at com.earth2me.essentials.commands.EssentialsCommand.run(EssentialsCommand.java:162) ~[?:?]
  19.         at com.earth2me.essentials.commands.EssentialsCommand.run(EssentialsCommand.java:157) ~[?:?]
  20.         at com.earth2me.essentials.Essentials.onCommandEssentials(Essentials.java:545) ~[?:?]
  21.         at com.earth2me.essentials.Essentials.onCommand(Essentials.java:458) ~[?:?]
  22.         at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  23.         at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:149) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  24.         at org.bukkit.craftbukkit.v1_14_R1.CraftServer.dispatchCommand(CraftServer.java:710) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  25.         at net.minecraft.server.v1_14_R1.PlayerConnection.handleCommand(PlayerConnection.java:1641) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  26.         at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:1481) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  27.         at net.minecraft.server.v1_14_R1.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  28.         at net.minecraft.server.v1_14_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  29.         at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  30.         at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  31.         at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(SourceFile:144) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  32.         at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  33.         at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(SourceFile:118) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  34.         at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java:908) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  35.         at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:901) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  36.         at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeAll(SourceFile:103) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  37.         at net.minecraft.server.v1_14_R1.MinecraftServer.sleepForTick(MinecraftServer.java:884) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  38.         at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:818) [Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  39.         at java.lang.Thread.run(Unknown Source) [?:1.8.0_251]
  40. Caused by: java.lang.NullPointerException
  41.         at top.zjzdmc.datehoer.losemoney.event.LoseMoneyListener.onPlayerdeath(LoseMoneyListener.java:17) ~[?:?]
  42.         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_251]
  43.         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_251]
  44.         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_251]
  45.         at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_251]
  46.         at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:316) ~[Spigot1.14.4.jar:git-Spigot-1981d55-3e7b386]
  47.         ... 35 more
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大佬，报错了。。。
唯爱她°
William_Shi 发表于 2020-5-7 19:20
@Deprecated 是过时或废弃的注解

IDE贴心的提示你，为你加上了横线

他那个方法，我把上面换成string就是划掉的
换成Player不是划掉的
这样的是啥意思呢
William_Shi
唯爱她° 发表于 2020-5-7 19:26
他那个方法，我把上面换成string就是划掉的
换成Player不是划掉的
这样的是啥意思呢 ...

我求你了，先学Java同一个方法名可以有不同的参数形式
然后根据传入的参数形式决定使用哪种方法
可能其中一个方法过时，但另外一个不过时
尽管方法名一样，但是其参数不一样（Player类型、String类型不一样）



William_Shi
唯爱她° 发表于 2020-5-7 19:22
大佬，报错了。。。

请补上你的代码请截图代码，并且带上行号
只有报错没代码，我怎么看？？？？？？
唯爱她°
William_Shi 发表于 2020-5-7 19:33
我求你了，先学Java同一个方法名可以有不同的参数形式
然后根据传入的参数形式决定使用哪种方法
可能其中 ...

行，明白了。能麻烦看下报错吗
南柯郡守
唯爱她° 发表于 2020-5-7 19:35
行，明白了。能麻烦看下报错吗

你给的报错都看不到你行号和代码

William_Shi
唯爱她° 发表于 2020-5-7 19:35
行，明白了。能麻烦看下报错吗

我刚刚回复了，请给代码行号以及完整代码
除非你认为你代码是商业机密不可以给任何人看到
唯爱她°
William_Shi 发表于 2020-5-7 19:40
我刚刚回复了，请给代码行号以及完整代码
除非你认为你代码是商业机密不可以给任何人看到 ...
  1. package top.zjzdmc.datehoer.losemoney.event;

  3. import net.milkbowl.vault.economy.Economy;
  4. import net.milkbowl.vault.economy.EconomyResponse;
  5. import org.bukkit.entity.Player;
  6. import org.bukkit.event.EventHandler;
  7. import org.bukkit.event.Listener;
  8. import org.bukkit.event.entity.PlayerDeathEvent;
  9. import top.zjzdmc.datehoer.losemoney.Losemoney;

  11. public class LoseMoneyListener implements Listener {
  12.     private static Economy econ = null;

  14.     @EventHandler
  15.     public void onPlayerdeath(PlayerDeathEvent e){
  16.         Player player = e.getEntity().getPlayer();
  17.         double money = Losemoney.instance.getConfig().getDouble("LoseMoney");
  18.         EconomyResponse take = econ.withdrawPlayer(player,money);
  19.         if(take.transactionSuccess()){
  20.             player.sendMessage("扣除"+money);
  21.         }
  22.         else{
  23.             System.out.println(take.errorMessage);
  24.         }
  25.     }
  26. }

  28. [code]package top.zjzdmc.datehoer.losemoney;

  30. import net.milkbowl.vault.economy.Economy;
  31. import net.milkbowl.vault.economy.EconomyResponse;
  32. import org.bukkit.entity.Player;
  33. import org.bukkit.event.EventHandler;
  34. import org.bukkit.event.entity.PlayerDeathEvent;
  35. import org.bukkit.plugin.RegisteredServiceProvider;
  36. import org.bukkit.plugin.java.JavaPlugin;
  37. import top.zjzdmc.datehoer.losemoney.event.LoseMoneyListener;

  39. public final class Losemoney extends JavaPlugin {
  40.     private static Economy econ = null;
  41.     public static Losemoney instance;
  42.     @Override
  43.     public void onEnable() {

  45.         // Plugin startup logic
  46.         getLogger().info("[LoseMoney]§6插件以加载");
  47.         if (!setupEconomy() ) {                                 //判断是否有vault！
  48.             getLogger().info("没有找到经济插件！！请安装vault");
  49.             getServer().getPluginManager().disablePlugin(this);
  50.             return;
  51.         }
  52.         getConfig().options().copyDefaults();
  53.         saveDefaultConfig();
  54.         getServer().getPluginManager().registerEvents(new LoseMoneyListener(),this);
  55.     }
  56.     private boolean setupEconomy() {
  57.         if (getServer().getPluginManager().getPlugin("Vault") == null) {
  58.             return false;
  59.         }
  60.         RegisteredServiceProvider<Economy> rsp = getServer().getServicesManager().getRegistration(Economy.class);
  61.         if (rsp == null) {
  62.             return false;
  63.         }
  64.         econ = rsp.getProvider();
  65.         return econ != null;
  66.     }


  69.     @Override
  70.     public void onDisable() {
  71.         // Plugin shutdown logic
  72.     }
  73. }
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[/code]

唯爱她°
南柯郡守 发表于 2020-5-7 19:38
你给的报错都看不到你行号和代码

在下面的回复里了
William_Shi
唯爱她° 发表于 2020-5-7 19:47
[/code]

截图！
你把一堆类的代码混在一起了！
我怎么看的了行号？？？？？？
唯爱她°
William_Shi 发表于 2020-5-7 19:51
截图！
你把一堆类的代码混在一起了！
我怎么看的了行号？？？？？？
  1. package top.zjzdmc.datehoer.losemoney;

  3. import net.milkbowl.vault.economy.Economy;
  4. import net.milkbowl.vault.economy.EconomyResponse;
  5. import org.bukkit.entity.Player;
  6. import org.bukkit.event.EventHandler;
  7. import org.bukkit.event.entity.PlayerDeathEvent;
  8. import org.bukkit.plugin.RegisteredServiceProvider;
  9. import org.bukkit.plugin.java.JavaPlugin;
  10. import top.zjzdmc.datehoer.losemoney.event.LoseMoneyListener;

  12. public final class Losemoney extends JavaPlugin {
  13.     private static Economy econ = null;
  14.     public static Losemoney instance;
  15.     @Override
  16.     public void onEnable() {

  18.         // Plugin startup logic
  19.         getLogger().info("[LoseMoney]§6插件以加载");
  20.         if (!setupEconomy() ) {                                 //判断是否有vault！
  21.             getLogger().info("没有找到经济插件！！请安装vault");
  22.             getServer().getPluginManager().disablePlugin(this);
  23.             return;
  24.         }
  25.         getConfig().options().copyDefaults();
  26.         saveDefaultConfig();
  27.         getServer().getPluginManager().registerEvents(new LoseMoneyListener(),this);
  28.     }
  29.     private boolean setupEconomy() {
  30.         if (getServer().getPluginManager().getPlugin("Vault") == null) {
  31.             return false;
  32.         }
  33.         RegisteredServiceProvider<Economy> rsp = getServer().getServicesManager().getRegistration(Economy.class);
  34.         if (rsp == null) {
  35.             return false;
  36.         }
  37.         econ = rsp.getProvider();
  38.         return econ != null;
  39.     }


  42.     @Override
  43.     public void onDisable() {
  44.         // Plugin shutdown logic
  45.     }
  46. }
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唯爱她°
唯爱她° 发表于 2020-5-7 19:52
  1. package top.zjzdmc.datehoer.losemoney.event;

  3. import net.milkbowl.vault.economy.Economy;
  4. import net.milkbowl.vault.economy.EconomyResponse;
  5. import org.bukkit.entity.Player;
  6. import org.bukkit.event.EventHandler;
  7. import org.bukkit.event.Listener;
  8. import org.bukkit.event.entity.PlayerDeathEvent;
  9. import top.zjzdmc.datehoer.losemoney.Losemoney;

  11. public class LoseMoneyListener implements Listener {
  12.     private static Economy econ = null;

  14.     @EventHandler
  15.     public void onPlayerdeath(PlayerDeathEvent e){
  16.         Player player = e.getEntity().getPlayer();
  17.         double money = Losemoney.instance.getConfig().getDouble("LoseMoney");
  18.         EconomyResponse take = econ.withdrawPlayer(player,money);
  19.         if(take.transactionSuccess()){
  20.             player.sendMessage("扣除"+money);
  21.         }
  22.         else{
  23.             System.out.println(take.errorMessage);
  24.         }
  25.     }
  26. }
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William_Shi
唯爱她° 发表于 2020-5-7 19:49
在下面的回复里了

反正就是这个栈帧

Caused by: java.lang.NullPointerException
        at top.zjzdmc.datehoer.losemoney.event.LoseMoneyListener.onPlayerdeath(LoseMoneyListener.java:17) ~[?:?]

出现了NPE
南柯郡守
扣钱的逻辑应该是Losemoney.econ而不是第二个类里面的econ
建议巩固下基础逻辑知识
William_Shi

Caused by: java.lang.NullPointerException
        at top.zjzdmc.datehoer.losemoney.event.LoseMoneyListener.onPlayerdeath(LoseMoneyListener.java:17) ~[?:?]

出现了NPE



咱先学java行不？你直接对着null操作钱？

你要获取你主类的econ
然后比如说赋值给这个econ
再进行操作
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