Question

我正面临以下问题

 SEVERE: Unable to serialize delta request for sessionid [576530C8078FEBD71743551D4417DAD5]
java.io.NotSerializableException: com.extjs.gxt.ui.client.data.RpcMap
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1164)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
    at java.util.ArrayList.writeObject(ArrayList.java:570)
    at sun.reflect.GeneratedMethodAccessor955.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
    at org.apache.catalina.ha.session.DeltaRequest$AttributeInfo.writeExternal(DeltaRequest.java:392)
    at org.apache.catalina.ha.session.DeltaRequest.writeExternal(DeltaRequest.java:285)
    at org.apache.catalina.ha.session.DeltaRequest.serialize(DeltaRequest.java:299)
    at org.apache.catalina.ha.session.DeltaManager.serializeDeltaRequest(DeltaManager.java:617)
    at org.apache.catalina.ha.session.DeltaManager.requestCompleted(DeltaManager.java:1057)
    at org.apache.catalina.ha.session.DeltaSession.expire(DeltaSession.java:436)
    at org.apache.catalina.ha.session.DeltaManager.handleSESSION_EXPIRED(DeltaManager.java:1370)
    at org.apache.catalina.ha.session.DeltaManager.messageReceived(DeltaManager.java:1276)
    at org.apache.catalina.ha.session.DeltaManager.messageDataReceived(DeltaManager.java:1005)
    at org.apache.catalina.ha.session.ClusterSessionListener.messageReceived(ClusterSessionListener.java:92)
    at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:897)
    at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:878)
    at org.apache.catalina.tribes.group.GroupChannel.messageReceived(GroupChannel.java:275)
    at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:80)
    at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:113)
    at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:80)
    at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:80)
    at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:253)
    at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:271)
    at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:211)
    at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:100)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

将List<InfoClasifCustom>上传到会话时

。

此课程如下：

public class InfoClasifCustom extends BaseModelData implements Serializable, IsSerializable, BeanModelTag, Comparable<InfoClasifCustom>{

private String idClasificacion;
private String color;
private Integer numEquiposGrupo;
private Long idGrupo;

private Boolean isEditable=false;
private static final long serialVersionUID = 8202856915683008011L;

public InfoClasificacionCustom() {

}

public void setColor(String color) {
    this.color = color;
}

public Integer getNumOrden() {
    return get("numOrden");
}

public void setNumOrden(Integer numOrden) {
    set("numOrden",numOrden);
}

所以我使用标准属性和BaseModelData的RPCMap作为此类的属性，并且所有这些属性都是基本类型或包装器（即int，int或Integer）。

是否存在序列化RPCMap的问题？也许列表？我只是在生产中遇到这个问题，因为它是一个Tomcat集群。

任何人都可以提供帮助吗？

Answer 1

该问题与RpcMap实现有关。不幸的是，RpcMap没有实现Serialization（在旧的GXT版本上）。为了解决这个问题，我建议在项目中添加类“com.extjs.gxt.ui.client.data.RpcMap”，它等于真正的GXT“RpcMap”，但实现Serializable。这样编译器就会使用你的类。

代码示例下方：

enter code here
/*
 * Ext GWT - Ext for GWT
 * Copyright(c) 2007, 2008, Ext JS, LLC.
 * licensing@extjs.com
 * 
 * http://extjs.com/license
 */
package com.extjs.gxt.ui.client.data;
import java.io.Serializable;
import java.util.Collection;
import java.util.Date;

import java.util.HashMap; import java.util.List; import
java.util.Map; import java.util.Set;

/**  * RpcMap is used to workaround a part of GWT RPC system.  *   *
<p /> The GWT RPC rebinder generates field serializers for every type
that is  * assignable to any type in the RPC interfaces.  *   * <p />
If BaseModel was to use "Map&lt;String, Serializable> map" this would
trigger  * the RPC system to generate field serializers for EVERY
Serializable type in  * your GWT Module's class path.  *   * <p />
Therefore BaseModel uses "Map&lt;String, RpcField> map" and relies on
type  * erasure (cast to Map&lt;Object,Object>) to work around this. 
*   * <p /> The only drawback is that if you have to ensure that field serializers are  * generated for any type you add to this map 
*   * <p /> RpcMap ensures that the following types are supported Byte, Short, Integer,  * Long, Float, Double, Date, Boolean, and
arrays of these types. As well as  * List, Set and Map  */
@SuppressWarnings("unused") public class RpcMap implements
Serializable{
/**      *       */     private static final long serialVersionUID = 1L;
private Byte _byte;   private Short _short;   private Integer
_integer;   private Long _long;   
private Float _float;   private Double _double;
private Date _date;   private Boolean _boolean;

 private Byte[] _bytes;   private Short[] _shorts;   private
Integer[] _integers;   private Long[] _longs;   private Float[]
_floats;   private Double[] _doubles;   private Date[] _dates;
private Boolean[] _booleans;

private List<String> _list;   private Set<String> _set;   private
Map<String, String> _map;

private transient Map<String, Object> map = new HashMap<String,Object>();

 public Map<String, Object> getTransientMap() {
   return map;   }

 public void clear() {
   map.clear();   }

 public boolean containsKey(Object key) {
   return map.containsKey(key);   }

 public boolean containsValue(Object value) {
   return map.containsValue(value);   }

 public Set<Map.Entry<String, Object>> entrySet() {
   return map.entrySet();   }

 public boolean equals(Object o) {
   if(o instanceof RpcMap){
     return map.equals(((RpcMap)o). map);
   }
   return false;   }

 public Object get(Object key) {
   return map.get(key);   }

 public int hashCode() {
   return map.hashCode();   }

 public boolean isEmpty() {
   return map.isEmpty();   }

 public Set<String> keySet() {
   return map.keySet();   }

 public Object put(String key, Object value) {
   return map.put(key, value);   }

 public void putAll(Map<? extends String, ? extends Object> m) {
   map.putAll(m);   }

 public Object remove(Object key) {
   return map.remove(key);   }

 public int size() {
   return map.size();   }

 public Collection<Object> values() {
   return map.values();   }

 @Override   public String toString() {
   return map.toString();   }

}

使用GXT RPCMAP序列化异常

1 个答案: