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fastjson发布1.1.5版本

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  • wenshao
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   发表时间：2011-09-26  
wtusmchen 写道
我在项目中用到了fastjson1.1.1，最近测试了1.1.5，1.1.6，遇到两个问题，麻烦温少给看看：
1.速度下降很多，对size为100的list序列化5000次，用JACKSON耗时982，fastjson1.1.1耗时967，fastjson1.1.6耗时3225

2.反序列化出错，jackson和fastjson都没有问题，1.1.5和1.1.6都会出现异常
java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType


代码如下：
public class User implements Serializable{
    private String user_id = "aaaa";
    Date bri;
    Timestamp bri2;
    Double num;
    List list;
...
}
序列化
for(int i=0; i<count; i++){
  json = JSON.toJSONString(list);
}
反序列化
List<User> tt = JSON.parseArray(json, User.class);


1、性能问题，也许你的测试方法不是很恰当，1.1.2之后性能有很大提升的。

2、你提交的BUG问题重现并且确认，是因为存在List list这个字段导致的，如果你修改为List<Object> list就会好了。

Bug已经修复：

JIRA ISSUE ： http://code.alibabatech.com/jira/browse/FASTJSON-100

回归测试：http://code.alibabatech.com/svn/fastjson/trunk/fastjson/src/test/java/com/alibaba/json/test/bvt/bug/Bug_for_wtusmchen.java


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  • wtusmchen
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   发表时间：2011-09-26  
可是我代码没变，只是把1.1.1改成1.1.6，性能就差了很多。就是很简单的重复序列化一个list
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  • rendong
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   发表时间：2011-10-26  
JSON to Bean 有问题，请教下 
 [com.alibaba.fastjson.JSONException: For input string: "2011-10-16 18:06"] with root cause
java.lang.NumberFormatException: For input string: "2011-10-16 18:06"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
	at java.lang.Long.parseLong(Long.java:419)
	at java.lang.Long.parseLong(Long.java:468)
	at com.alibaba.fastjson.parser.deserializer.TimestampDeserializer.deserialze(TimestampDeserializer.java:36)
	at com.alibaba.fastjson.parser.deserializer.DefaultFieldDeserializer.parseField(DefaultFieldDeserializer.java:25)
	at com.alibaba.fastjson.parser.deserializer.ASMJavaBeanDeserializer.parseField(ASMJavaBeanDeserializer.java:67)
	at com.alibaba.fastjson.parser.deserializer.ASMJavaBeanDeserializer$InnerJavaBeanDeserializer.parseField(ASMJavaBeanDeserializer.java:78)
	at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:207)
	at com.alibaba.fastjson.parser.deserializer.ASMJavaBeanDeserializer.deserialze(ASMJavaBeanDeserializer.java:31)
	at Fastjson_ASM_TbRrepairTelephone_1.deserialze(Unknown Source)
	at com.alibaba.fastjson.parser.DefaultJSONParser.parseObject(DefaultJSONParser.java:469)
	at com.alibaba.fastjson.JSON.parseObject(JSON.java:200)
	at com.tonghuisoft.mos.webapp.action.RepairTelsupportAction.add(RepairTelsupportAction.java:66)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
	at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
	at com.tonghuisoft.mos.webapp.action.BaseAction.execute(BaseAction.java:85)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.tonghuisoft.mos.common.SystemFilter.doFilter(SystemFilter.java:45)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at


自定义了一个  Deserializer，然后像下面这样，但是不调用我定义的那个Deserializer，还是调用原有的TimestampDeserializer 

ParserConfig parserConfig = ParserConfig.getGlobalInstance();
		parserConfig.putDeserializer(java.sql.Timestamp.class, RrepairTimeTimestampDeserializer.instance);

		TbRrepairTelephone tbRrepairTelephone = JSON.parseObject(jsonString, TbRrepairTelephone.class,parserConfig,JSON.DEFAULT_PARSER_FEATURE);

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  • wenshao
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   发表时间：2011-10-26   最后修改：2011-10-26
回复rendong：
http://code.alibabatech.com/jira/browse/FASTJSON-112

下个星期发布！
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  • rendong
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   发表时间：2011-10-26  
谢谢，文档中发序列反序列化的资料比较少，如果能在 parserConfig 不是根据类型设置，而是可以根据字段名配置比较好，因为比如有两个字段，a，b都是java.util.Date,但是a的格式yyyymmdd 但是b的格式为yyyymmddmm 就不能区分了。
@JSONField不能用于反序列化么？
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  • rendong
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   发表时间：2011-10-26  
如果在parserConfig  在反序列化增加parserConfig.setIncludeParseFileds("fieldName1","fieldName2","fieldName3");就只解析这几个filed，或者parserConfig.setExcludeParseFileds("fieldName1","fieldName2","fieldName3");同样在序列号增加类似的方法，而不是使用filter，就方便了。
parserConfig.addIncludeParseFiled("filedName1").addParsePatten("yyyy-mm-dd mm:ss");等。
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  • rendong
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   发表时间：2011-10-27  
当序列化 JavassistLazyInitializer 代理过的对象的时候，出错 

严重: Servlet.service() for servlet [action] in context with path [/mos] threw exception [java.lang.IncompatibleClassChangeError: Found interface java.sql.Connection, but class was expected] with root cause
java.lang.IncompatibleClassChangeError: Found interface java.sql.Connection, but class was expected
	at Serializer_52.write1(Unknown Source)
	at Serializer_52.write(Unknown Source)
	at com.alibaba.fastjson.serializer.JSONSerializer.writeWithFieldName(JSONSerializer.java:321)
	at Serializer_51.write1(Unknown Source)
	at Serializer_51.write(Unknown Source)
	at com.alibaba.fastjson.serializer.JSONSerializer.writeWithFieldName(JSONSerializer.java:321)
	at Serializer_6.write1(Unknown Source)
	at Serializer_6.write(Unknown Source)
	at com.alibaba.fastjson.serializer.JSONSerializer.writeWithFieldName(JSONSerializer.java:321)
	at Serializer_4.write1(Unknown Source)
	at Serializer_4.write(Unknown Source)
	at com.alibaba.fastjson.serializer.JSONSerializer.writeWithFieldName(JSONSerializer.java:321)
	at Serializer_3.write1(Unknown Source)
	at Serializer_3.write(Unknown Source)
	at com.alibaba.fastjson.serializer.JSONSerializer.writeWithFieldName(JSONSerializer.java:321)
	at Serializer_2.write1(Unknown Source)
	at Serializer_2.write(Unknown Source)
	at com.alibaba.fastjson.serializer.MapSerializer.write(MapSerializer.java:145)
	at com.alibaba.fastjson.serializer.JSONSerializer.write(JSONSerializer.java:300)
	at com.alibaba.fastjson.JSON.toJSONString(JSON.java:426)
	at com.tonghuisoft.mos.webapp.maptaskaction.AtmLineAction.editSubmit(AtmLineAction.java:95)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270)
	at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187)
	at com.tonghuisoft.mos.webapp.action.BaseAction.execute(BaseAction.java:90)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at com.tonghuisoft.mos.common.SystemFilter.doFilter(SystemFilter.java:45)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:279)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
	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)


google gson 序列号的结果 
{"handler":{"interfaces":[{}],"constructed":true,"persistentClass":{},"getIdentifierMethod":{"clazz":{},"slot":1,"name":"getId","returnType":{},"parameterTypes":[],"exceptionTypes":[],"modifiers":1,"root":{"clazz":{},"slot":1,"name":"getId","returnType":{},"parameterTypes":[],"exceptionTypes":[],"modifiers":1,"override":false},"override":false},"setIdentifierMethod":{"clazz":{},"slot":4,"name":"setId","returnType":{},"parameterTypes":[{}],"exceptionTypes":[],"modifiers":1,"root":{"clazz":{},"slot":4,"name":"setId","returnType":{},"parameterTypes":[{}],"exceptionTypes":[],"modifiers":1,"override":false},"override":false},"overridesEquals":false,"entityName":"com.tonghuisoft.mos.webapp.maptaskaction.AtmLineModel","id":"4028128133446d4a0133446f70eb0001","target":{"id":"4028128133446d4a0133446f70eb0001","lineName":"线路名称","lineCode":"线路编码","lineDescription":"线路描述","createTime":"Oct 27, 2011 4:11:53 PM","version":0},"initialized":true,"readOnly":false,"unwrap":false}}

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  • kzt_cn
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   发表时间：2012-09-17  
用fastjson
转对象时返回为空,不知道是什么原因呢
以下是服务器返回的字串.jsonString ={"rnname":"包","pknumspec":"160g*1","pknum":"24","rnum":"24","rnumspec":"24","pkname":"160g*1"}转为对象时goodsdetailactivity [rNName=null, rNum=null, rNumSpec=null]有没高人看下.
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