When calling ItemStack.deserialize, a casting exception occurs which breaks deserialization.
Unable to find source-code formatter for language: text. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml
05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at java.lang.Thread.run(Thread.java:745) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at org.bukkit.craftbukkit.v1_8_R3.scheduler.CraftTask.run(CraftTask.java:71) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at com.lumengaming.giftwrap.service.DataService$$Lambda$16/912274127.run(Unknown Source) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at com.lumengaming.giftwrap.service.DataService.lambda$getPackageById$6(DataService.java:37) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at com.lumengaming.giftwrap.repository.MySqlDataRepository.getPackageById(MySqlDataRepository.java:131) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at com.lumengaming.giftwrap.repository.MySqlDataRepository.readPackages(MySqlDataRepository.java:158) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at com.lumengaming.giftwrap.SerializerUtility.fromJson(SerializerUtility.java:88) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at com.lumengaming.giftwrap.SerializerUtility.deserialize(SerializerUtility.java:139) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: at org.bukkit.inventory.ItemStack.deserialize(ItemStack.java:533) 05.12 22:57:34 [Server] INFO [22:57:34 WARN]: java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Integer 05.12 22:57:12 [22:57:12 INFO]: Pangamma ran command Message of the Day 05.12 22:57:12 [Connect] User [22:57:12 INFO]: Pangamma, IP 127.0.0.1 05.12 22:57:12 [Server] INFO [22:57:12 INFO]: UUID of player Pangamma is f77b713b-7aa0-3854-8208-1b3550c188ca 05.12 22:53:28 [Se
The fix is to make sure the amount is being cast to Number, then the .intValue() method is used to get the int value of the amount.
if (args.containsKey("amount")) { amount = ((Number) args.get("amount")).intValue(); }
- is cloned by
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SPIGOT-1343 Deserialization of ItemStack fails when renamed using anvil.
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- Closed
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[SPIGOT-1325] Deserialization of ItemStack fails.
@md_5
What alternative would you suggest instead of the current solution then? There might be some already-defined method I'm overlooking right now.
Taylor
added a comment - - edited @md_5
What alternative would you suggest instead of the current solution then? There might be some already-defined method I'm overlooking right now. Taylor
added a comment - I'm using google gson to parse the json into the map types... Then ItemStack.deserialize from there... Warning: Prototype code that looks terrible and will need to be refactored later coming in:
package com.lumengaming.giftwrap; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.reflect.TypeToken; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.lang.reflect.Type; import java.util.ArrayList; import java.util.Base64; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.TreeMap; import java.util.logging.Level; import java.util.logging.Logger; import org.bukkit.Material; import org.bukkit.configuration.serialization.ConfigurationSerialization; import org.bukkit.inventory.ItemStack; import org.bukkit.inventory.meta.ItemMeta; public class SerializerUtility { //<editor-fold defaultstate="collapsed" desc="Second Attempt"> public static String toJson(final ItemStack[] is){ String json = ""; try{ List<TreeMap<String, Map<String, Object>>> data = serialize(is); Gson gson = new GsonBuilder().serializeNulls().create(); json = gson.toJson(data); // System.out.println(json); // File f = new File("tester.bin"); // FileOutputStream fos; // fos = new FileOutputStream(f); // fos.write(json.getBytes()); } catch (Exception ex){ Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); } return json; } public static String toJsonSingle(final ItemStack is){ String json = ""; try{ List<TreeMap<String, Map<String, Object>>> data = serialize(new ItemStack[]{is}); Gson gson = new GsonBuilder().serializeNulls().create(); json = gson.toJson(data.get(0)); } catch (Exception ex){ Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); } return json; } public static ItemStack fromJsonSingle(final String json){ ItemStack is = null; try{ Gson gson = new GsonBuilder().serializeNulls().create(); // ArrayList<TreeMap<String, Map<String, Object>>> TypeToken tt = new TypeToken<TreeMap<String, Map<String, Object>>>(){}; Type collectionType = tt.getType(); TreeMap<String, Map<String, Object>> fromJson = gson.fromJson(json, collectionType); ArrayList<TreeMap<String, Map<String, Object>>> list = new ArrayList<>(); list.add(fromJson); ItemStack[] deserialize = deserialize(list); return deserialize[0]; } catch (Exception ex){ Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); } return is; } public static ItemStack[] fromJson(final String json){ ItemStack[] is = null; try{ Gson gson = new GsonBuilder().serializeNulls().create(); // ArrayList<TreeMap<String, Map<String, Object>>> TypeToken tt = new TypeToken<ArrayList<TreeMap<String, Map<String, Object>>>>(){}; Type collectionType = tt.getType(); List<TreeMap<String, Map<String, Object>>> fromJson = gson.fromJson(json, collectionType); return deserialize(fromJson); } catch (Exception ex){ Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); } return is; } private static List<TreeMap<String,Map<String,Object>>> serialize(final ItemStack[] itemStackList) { final List<TreeMap<String,Map<String,Object>>> serialized = new ArrayList<>(); for (ItemStack itemStack : itemStackList) { TreeMap<String,Map<String,Object>> sMap = new TreeMap<>(); ItemMeta im = null; try{ if (itemStack == null){ itemStack = new ItemStack(Material.AIR); } im = itemStack.hasItemMeta() ? itemStack.getItemMeta() : null; Map<String, Object> serializedItemMeta = (im != null) ? im.serialize() : null; sMap.put("ItemMeta",serializedItemMeta); }catch(Exception ex){ ex.printStackTrace(); } itemStack.setItemMeta(null); try{ Map<String, Object> serializedItemStack = itemStack.serialize(); sMap.put("ItemStack",serializedItemStack); }catch(Exception ex){ sMap.put("ItemStack", new ItemStack(Material.BARRIER).serialize()); if (sMap.containsKey("ItemMeta")){ sMap.remove("ItemMeta"); } ex.printStackTrace(); } itemStack.setItemMeta(im); serialized.add(sMap); } return serialized; } private static ItemStack[] deserialize(final List<TreeMap<String,Map<String,Object>>> serialized) { final ItemStack[] itemStackList = new ItemStack[serialized.size()]; int i = 0; for (TreeMap<String,Map<String,Object>> sMap : serialized) { try{ Entry<String, Map<String, Object>> serializedItemStack = sMap.entrySet().iterator().next(); if (sMap.containsKey("ItemStack")){ ItemStack is = ItemStack.deserialize(sMap.get("ItemStack")); if (sMap.containsKey("ItemMeta") && sMap.get("ItemMeta") != null){ ItemMeta im = (ItemMeta) ConfigurationSerialization.deserializeObject(sMap.get("ItemMeta"), ConfigurationSerialization.getClassByAlias("ItemMeta")); is.setItemMeta(im); } itemStackList[i++] = is; }else{ itemStackList[i++] = new ItemStack(Material.AIR); } }catch(Exception ex){ ex.printStackTrace(); itemStackList[i++] = new ItemStack(Material.AIR); } } return itemStackList; } //</editor-fold> //<editor-fold defaultstate="collapsed" desc="Base serializers"> private static List<HashMap<Map<String, Object>, Map<String, Object>>> serializeItemStackList(final ItemStack[] itemStackList) { final List<HashMap<Map<String, Object>, Map<String, Object>>> serializedItemStackList = new ArrayList<HashMap<Map<String, Object>, Map<String, Object>>>(); for (ItemStack itemStack : itemStackList) { HashMap<Map<String, Object>, Map<String, Object>> serializedMap = new HashMap<>(); if (itemStack == null) itemStack = new ItemStack(Material.AIR); ItemMeta im = itemStack.hasItemMeta() ? itemStack.getItemMeta() : null; Map<String, Object> serializedItemMeta = (im != null) ? im.serialize() : null; itemStack.setItemMeta(null); Map<String, Object> serializedItemStack = itemStack.serialize(); itemStack.setItemMeta(im); serializedMap.put(serializedItemStack, serializedItemMeta); serializedItemStackList.add(serializedMap); } return serializedItemStackList; } private static ItemStack[] deserializeItemStackList(final List<HashMap<Map<String, Object>, Map<String, Object>>> serializedItemStackList) { final ItemStack[] itemStackList = new ItemStack[serializedItemStackList.size()]; int i = 0; for (HashMap<Map<String, Object>, Map<String, Object>> serializedItemStackMap : serializedItemStackList) { Entry<Map<String, Object>, Map<String, Object>> serializedItemStack = serializedItemStackMap.entrySet().iterator().next(); ItemStack itemStack = ItemStack.deserialize(serializedItemStack.getKey()); if (serializedItemStack.getValue() != null) { ItemMeta itemMeta = (ItemMeta)ConfigurationSerialization.deserializeObject(serializedItemStack.getValue(), ConfigurationSerialization.getClassByAlias("ItemMeta")); itemStack.setItemMeta(itemMeta); } itemStackList[i++] = itemStack; } return itemStackList; } //</editor-fold> //<editor-fold defaultstate="collapsed" desc="Base64"> /** * Returns empty stack on failure. * @param b64Str * @return */ public static ItemStack[] fromBase64Str(final String b64Str){ if (b64Str == null || "".equals(b64Str.trim())) return new ItemStack[0]; return fromBase64(b64Str.getBytes()); } public static ItemStack[] fromBase64(final byte[] b64){ try{ byte[] oBytes = Base64.getDecoder().decode(b64); ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(oBytes)); List<HashMap<Map<String, Object>, Map<String, Object>>> data = (List<HashMap<Map<String, Object>, Map<String, Object>>>) ois.readObject(); return deserializeItemStackList(data); } catch (IOException | ClassNotFoundException ex){ Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); } return new ItemStack[0]; } /** * Returns null on failure. * @param items * @return */ public static String toBase64Str(final ItemStack[] items){ return new String(toBase64(items)); } /** * Returns null on failure. * @param items * @return */ public static byte[] toBase64(final ItemStack[] items){ List<HashMap<Map<String, Object>, Map<String, Object>>> data = serializeItemStackList(items); try{ ByteArrayOutputStream baos = new ByteArrayOutputStream(); ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(data); oos.flush(); oos.close(); byte[] oBytes = baos.toByteArray(); return Base64.getEncoder().encode(oBytes); } catch (IOException ex){ Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); } return new byte[0]; } //</editor-fold> //<editor-fold defaultstate="collapsed" desc="Json"> // public static toJson(final ItemStack[] is){ // try{ // List<HashMap<Map<String, Object>, Map<String, Object>>> data = serializeItemStackList(is); // // } // catch (IOException | ClassNotFoundException ex){ // Logger.getLogger(SerializerUtility.class.getName()).log(Level.SEVERE, null, ex); // } // return new ItemStack[0]; // } //</editor-fold> }
Taylor
added a comment - I'm using google gson to parse the json into the map types... Then ItemStack.deserialize from there... Warning: Prototype code that looks terrible and will need to be refactored later coming in:
package com.lumengaming.giftwrap;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Base64;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.TreeMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.bukkit.Material;
import org.bukkit.configuration.serialization.ConfigurationSerialization;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;
public class SerializerUtility {
//<editor-fold defaultstate= "collapsed" desc= "Second Attempt" >
public static String toJson( final ItemStack[] is){
String json = "";
try {
List<TreeMap< String , Map< String , Object >>> data = serialize(is);
Gson gson = new GsonBuilder().serializeNulls().create();
json = gson.toJson(data);
// System .out.println(json);
// File f = new File( "tester.bin" );
// FileOutputStream fos;
// fos = new FileOutputStream(f);
// fos.write(json.getBytes());
}
catch (Exception ex){
Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
}
return json;
}
public static String toJsonSingle( final ItemStack is){
String json = "";
try {
List<TreeMap< String , Map< String , Object >>> data = serialize( new ItemStack[]{is});
Gson gson = new GsonBuilder().serializeNulls().create();
json = gson.toJson(data.get(0));
}
catch (Exception ex){
Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
}
return json;
}
public static ItemStack fromJsonSingle( final String json){
ItemStack is = null ;
try {
Gson gson = new GsonBuilder().serializeNulls().create();
// ArrayList<TreeMap< String , Map< String , Object >>>
TypeToken tt = new TypeToken<TreeMap< String , Map< String , Object >>>(){};
Type collectionType = tt.getType();
TreeMap< String , Map< String , Object >> fromJson = gson.fromJson(json, collectionType);
ArrayList<TreeMap< String , Map< String , Object >>> list = new ArrayList<>();
list.add(fromJson);
ItemStack[] deserialize = deserialize(list);
return deserialize[0];
}
catch (Exception ex){
Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
}
return is;
}
public static ItemStack[] fromJson( final String json){
ItemStack[] is = null ;
try {
Gson gson = new GsonBuilder().serializeNulls().create();
// ArrayList<TreeMap< String , Map< String , Object >>>
TypeToken tt = new TypeToken<ArrayList<TreeMap< String , Map< String , Object >>>>(){};
Type collectionType = tt.getType();
List<TreeMap< String , Map< String , Object >>> fromJson = gson.fromJson(json, collectionType);
return deserialize(fromJson);
}
catch (Exception ex){
Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
}
return is;
}
private static List<TreeMap< String ,Map< String , Object >>> serialize( final ItemStack[] itemStackList) {
final List<TreeMap< String ,Map< String , Object >>> serialized = new ArrayList<>();
for (ItemStack itemStack : itemStackList) {
TreeMap< String ,Map< String , Object >> sMap = new TreeMap<>();
ItemMeta im = null ;
try {
if (itemStack == null ){
itemStack = new ItemStack(Material.AIR);
}
im = itemStack.hasItemMeta() ? itemStack.getItemMeta() : null ;
Map< String , Object > serializedItemMeta = (im != null ) ? im.serialize() : null ;
sMap.put( "ItemMeta" ,serializedItemMeta);
} catch (Exception ex){
ex.printStackTrace();
}
itemStack.setItemMeta( null );
try {
Map< String , Object > serializedItemStack = itemStack.serialize();
sMap.put( "ItemStack" ,serializedItemStack);
} catch (Exception ex){
sMap.put( "ItemStack" , new ItemStack(Material.BARRIER).serialize());
if (sMap.containsKey( "ItemMeta" )){
sMap.remove( "ItemMeta" );
}
ex.printStackTrace();
}
itemStack.setItemMeta(im);
serialized.add(sMap);
}
return serialized;
}
private static ItemStack[] deserialize( final List<TreeMap< String ,Map< String , Object >>> serialized) {
final ItemStack[] itemStackList = new ItemStack[serialized.size()];
int i = 0;
for (TreeMap< String ,Map< String , Object >> sMap : serialized) {
try {
Entry< String , Map< String , Object >> serializedItemStack = sMap.entrySet().iterator().next();
if (sMap.containsKey( "ItemStack" )){
ItemStack is = ItemStack.deserialize(sMap.get( "ItemStack" ));
if (sMap.containsKey( "ItemMeta" ) && sMap.get( "ItemMeta" ) != null ){
ItemMeta im = (ItemMeta) ConfigurationSerialization.deserializeObject(sMap.get( "ItemMeta" ), ConfigurationSerialization.getClassByAlias( "ItemMeta" ));
is.setItemMeta(im);
}
itemStackList[i++] = is;
} else {
itemStackList[i++] = new ItemStack(Material.AIR);
}
} catch (Exception ex){
ex.printStackTrace();
itemStackList[i++] = new ItemStack(Material.AIR);
}
}
return itemStackList;
}
//</editor-fold>
//<editor-fold defaultstate= "collapsed" desc= "Base serializers" >
private static List<HashMap<Map< String , Object >, Map< String , Object >>> serializeItemStackList( final ItemStack[] itemStackList) {
final List<HashMap<Map< String , Object >, Map< String , Object >>> serializedItemStackList = new ArrayList<HashMap<Map< String , Object >, Map< String , Object >>>();
for (ItemStack itemStack : itemStackList) {
HashMap<Map< String , Object >, Map< String , Object >> serializedMap = new HashMap<>();
if (itemStack == null ) itemStack = new ItemStack(Material.AIR);
ItemMeta im = itemStack.hasItemMeta() ? itemStack.getItemMeta() : null ;
Map< String , Object > serializedItemMeta = (im != null ) ? im.serialize() : null ;
itemStack.setItemMeta( null );
Map< String , Object > serializedItemStack = itemStack.serialize();
itemStack.setItemMeta(im);
serializedMap.put(serializedItemStack, serializedItemMeta);
serializedItemStackList.add(serializedMap);
}
return serializedItemStackList;
}
private static ItemStack[] deserializeItemStackList( final List<HashMap<Map< String , Object >, Map< String , Object >>> serializedItemStackList) {
final ItemStack[] itemStackList = new ItemStack[serializedItemStackList.size()];
int i = 0;
for (HashMap<Map< String , Object >, Map< String , Object >> serializedItemStackMap : serializedItemStackList) {
Entry<Map< String , Object >, Map< String , Object >> serializedItemStack = serializedItemStackMap.entrySet().iterator().next();
ItemStack itemStack = ItemStack.deserialize(serializedItemStack.getKey());
if (serializedItemStack.getValue() != null ) {
ItemMeta itemMeta = (ItemMeta)ConfigurationSerialization.deserializeObject(serializedItemStack.getValue(), ConfigurationSerialization.getClassByAlias( "ItemMeta" ));
itemStack.setItemMeta(itemMeta);
}
itemStackList[i++] = itemStack;
}
return itemStackList;
}
//</editor-fold>
//<editor-fold defaultstate= "collapsed" desc= "Base64" >
/**
* Returns empty stack on failure.
* @param b64Str
* @ return
*/
public static ItemStack[] fromBase64Str( final String b64Str){
if (b64Str == null || "".equals(b64Str.trim())) return new ItemStack[0];
return fromBase64(b64Str.getBytes());
}
public static ItemStack[] fromBase64( final byte [] b64){
try {
byte [] oBytes = Base64.getDecoder().decode(b64);
ObjectInputStream ois = new ObjectInputStream( new ByteArrayInputStream(oBytes));
List<HashMap<Map< String , Object >, Map< String , Object >>> data = (List<HashMap<Map< String , Object >, Map< String , Object >>>) ois.readObject();
return deserializeItemStackList(data);
}
catch (IOException | ClassNotFoundException ex){
Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
}
return new ItemStack[0];
}
/**
* Returns null on failure.
* @param items
* @ return
*/
public static String toBase64Str( final ItemStack[] items){
return new String (toBase64(items));
}
/**
* Returns null on failure.
* @param items
* @ return
*/
public static byte [] toBase64( final ItemStack[] items){
List<HashMap<Map< String , Object >, Map< String , Object >>> data = serializeItemStackList(items);
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(data);
oos.flush();
oos.close();
byte [] oBytes = baos.toByteArray();
return Base64.getEncoder().encode(oBytes);
}
catch (IOException ex){
Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
}
return new byte [0];
}
//</editor-fold>
//<editor-fold defaultstate= "collapsed" desc= "Json" >
// public static toJson( final ItemStack[] is){
// try {
// List<HashMap<Map< String , Object >, Map< String , Object >>> data = serializeItemStackList(is);
//
// }
// catch (IOException | ClassNotFoundException ex){
// Logger.getLogger(SerializerUtility. class. getName()).log(Level.SEVERE, null , ex);
// }
// return new ItemStack[0];
// }
//</editor-fold>
}
md_5
added a comment - JSON? The serializer only supports yaml, via the configuration API.
You are manually calling deserialize and passing an undefined input into the method.
md_5
added a comment - JSON? The serializer only supports yaml, via the configuration API.
You are manually calling deserialize and passing an undefined input into the method. Taylor
added a comment - You're right, it does. So I'm not sure why the deserialize method tried to deserialize it as a Double... cast to an Integer. Either way, it's a pretty easy fix. =]
Both Double and Integer extend/implement Number. Number has a method for getting the int value. So just cast to Number, then use the toIntValue() method.
[{"ItemMeta":null,"ItemStack":{"type":"DISPENSER","amount":10}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}},{"ItemMeta":null,"ItemStack":{"type":"AIR"}}]
Taylor
added a comment - You're right, it does. So I'm not sure why the deserialize method tried to deserialize it as a Double... cast to an Integer. Either way, it's a pretty easy fix. =]
Both Double and Integer extend/implement Number. Number has a method for getting the int value. So just cast to Number, then use the toIntValue() method.
[{ "ItemMeta" : null , "ItemStack" :{ "type" : "DISPENSER" , "amount" :10}},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }},{ "ItemMeta" : null , "ItemStack" :{ "type" : "AIR" }}]
md_5
added a comment - Show me how you are getting an ItemStack with a Double value as it's amount. Taylor
added a comment - This can cause data loss unless fixed. 
@md_5 fixed in code? I can't find related commit