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wenshao / fastjson

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【急】版本1.2.77的JSON序列化报错 Comparison method violates its general contract

待办的
老衲也想有个后
创建于  
2021-08-19 13:29 
Exception in thread "main" java.lang.IllegalArgumentException: `Comparison method violates its general contract`!
	at java.util.TimSort.mergeHi(TimSort.java:899)
	at java.util.TimSort.mergeAt(TimSort.java:516)
	at java.util.TimSort.mergeForceCollapse(TimSort.java:457)
	at java.util.TimSort.sort(TimSort.java:254)
	at java.util.Arrays.sort(Arrays.java:1438)
	at com.alibaba.fastjson.util.TypeUtils.computeGetters(TypeUtils.java:1880)
	at com.alibaba.fastjson.util.TypeUtils.buildBeanInfo(TypeUtils.java:1820)
	at com.alibaba.fastjson.serializer.SerializeConfig.createJavaBeanSerializer(SerializeConfig.java:113)
	at com.alibaba.fastjson.serializer.SerializeConfig.getObjectWriter(SerializeConfig.java:821)
	at com.alibaba.fastjson.serializer.SerializeConfig.getObjectWriter(SerializeConfig.java:440)
	at com.alibaba.fastjson.serializer.JSONSerializer.getObjectWriter(JSONSerializer.java:448)
	at com.alibaba.fastjson.serializer.JSONSerializer.write(JSONSerializer.java:309)
	at com.alibaba.fastjson.JSON.toJSONString(JSON.java:793)
	at com.alibaba.fastjson.JSON.toJSONString(JSON.java:727)

评论 (18)

老衲也想有个后 创建了任务
老衲也想有个后 修改了描述
老衲也想有个后 修改了标题
展开全部操作日志

经初步排查由于1.2.77版的TypeUtils的1880行增加了类中方法的排序导致，但又不是必然出现。

Arrays.sort(methods, new MethodInheritanceComparator());

public static class MethodInheritanceComparator implements Comparator<Method> {
    public int compare(Method m1, Method m2) {
        Class<?> class1 = m1.getReturnType();
        Class<?> class2 = m2.getReturnType();
        if (class1.equals(class2)) {
            return 0;
        }
        if (class1.isAssignableFrom(class2)) {
            return -1;
        }
        if (class2.isAssignableFrom(class1)) {
            return 1;
        }
        return 0;
    }
}

我是1.2.78版本，和你的问题一样，也不是必然出现。

老衲也想有个后 修改了标题

增加参数：-Djava.util.Arrays.useLegacyMergeSort=true

请问这个问题解决了吗？

解决了么

我也遇到一样的问题。请问解决了么？

今天使用Dubbo3.0.3序列化org.apache.dubbo.rpc.RpcContext也遇到了这个问题

com.alibaba.fastjson.JSONException: write javaBean error, fastjson version 1.2.76, class org.apache.dubbo.rpc.RpcContext, write javaBean error, fastjson version 1.2.76, class org.apache.dubbo.rpc.RpcInvocation, fieldName : invocation, write javaBean error, fastjson version 1.2.76, class org.apache.dubbo.rpc.model.ModuleModel, fieldName : moduleModel, Comparison method violates its general contract!
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:541)
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:154)
	at com.alibaba.fastjson.serializer.ASMSerializer_1_RpcContext.writeNormal(Unknown Source)
	at com.alibaba.fastjson.serializer.ASMSerializer_1_RpcContext.write(Unknown Source)
	at com.alibaba.fastjson.serializer.JSONSerializer.write(JSONSerializer.java:312)
	at com.alibaba.fastjson.JSON.toJSONString(JSON.java:703)
	at com.alibaba.fastjson.JSON.toJSONString(JSON.java:692)
	at com.acanx.meta.dubbo3.impl.blog.EchoDubbo3ServiceImpl.echo(EchoDubbo3ServiceImpl.java:57)
	at org.apache.dubbo.common.bytecode.Wrapper2.invokeMethod(Wrapper2.java)
	at org.apache.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47)
	at org.apache.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:84)
	at org.apache.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:56)
	at org.apache.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
	at org.apache.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:77)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:46)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:89)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:52)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.auth.filter.ProviderAuthFilter.invoke(ProviderAuthFilter.java:53)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:132)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:195)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:41)
	at org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:84)
	at org.apache.dubbo.rpc.protocol.tri.UnaryServerStream$UnaryServerTransportObserver.invoke(UnaryServerStream.java:87)
	at org.apache.dubbo.rpc.protocol.tri.AbstractServerStream.lambda$execute$0(AbstractServerStream.java:197)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: com.alibaba.fastjson.JSONException: write javaBean error, fastjson version 1.2.76, class org.apache.dubbo.rpc.RpcInvocation, fieldName : invocation, write javaBean error, fastjson version 1.2.76, class org.apache.dubbo.rpc.model.ModuleModel, fieldName : moduleModel, Comparison method violates its general contract!
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:541)
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:154)
	at com.alibaba.fastjson.serializer.FieldSerializer.writeValue(FieldSerializer.java:318)
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:472)
	... 35 more
Caused by: com.alibaba.fastjson.JSONException: write javaBean error, fastjson version 1.2.76, class org.apache.dubbo.rpc.model.ModuleModel, fieldName : moduleModel, Comparison method violates its general contract!
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:541)
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:154)
	at com.alibaba.fastjson.serializer.FieldSerializer.writeValue(FieldSerializer.java:318)
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:472)
	... 38 more
Caused by: java.lang.IllegalArgumentException: Comparison method violates its general contract!
	at java.base/java.util.TimSort.mergeHi(TimSort.java:903)
	at java.base/java.util.TimSort.mergeAt(TimSort.java:520)
	at java.base/java.util.TimSort.mergeForceCollapse(TimSort.java:461)
	at java.base/java.util.TimSort.sort(TimSort.java:254)
	at java.base/java.util.Arrays.sort(Arrays.java:1233)
	at com.alibaba.fastjson.util.TypeUtils.computeGetters(TypeUtils.java:1880)
	at com.alibaba.fastjson.util.TypeUtils.buildBeanInfo(TypeUtils.java:1820)
	at com.alibaba.fastjson.serializer.SerializeConfig.createJavaBeanSerializer(SerializeConfig.java:113)
	at com.alibaba.fastjson.serializer.SerializeConfig.getObjectWriter(SerializeConfig.java:821)
	at com.alibaba.fastjson.serializer.SerializeConfig.getObjectWriter(SerializeConfig.java:440)
	at com.alibaba.fastjson.serializer.JSONSerializer.getObjectWriter(JSONSerializer.java:448)
	at com.alibaba.fastjson.serializer.FieldSerializer.writeValue(FieldSerializer.java:208)
	at com.alibaba.fastjson.serializer.JavaBeanSerializer.write(JavaBeanSerializer.java:472)
	... 41 more
, grpc-status: 2, grpc-status-details-bin: 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padding=0 endStream=true

1.2.78月遇到这个问题了

输入图片说明

我也报这个错，怎么处理呢？

换成，1.2.73 ，解决了！

巨坑，还没修复，，可怕，导致根本不能用了，，

这个排序方式有问题，A extends B, C = void, 那么排序就是 A < B。 A = C, B = C => A = B, A和B的比较就冲突了

https://github.com/alibaba/fastjson/releases/tag/1.2.79

这个问题已修复了，可以选择最近版本使用。

这个版本修复了 已经验证通过了

这个问题是什么原因导致的,升级到1.2.79就可以吗? 为什么我把版本降到1.2.73问题就不会出现

1.2.78也碰到了

问题解决了吗?

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