ma642 opened a new issue #1637:
URL: https://github.com/apache/dubbo-go/issues/1637
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**What happened**:
We defined Java request with List<integer> and add null to the list, then
server side(dubbo-go) get error when decode the value.
java side:
User user=new User();
user.setId(400000);
user.setUids(new ArrayList<>());
user.getUids().add(null);
User user1 = userProvider.GetUser(user);
server side(dubbo-go):
type (
User struct {
Id int32
Uids []int32
}
)
The server side get error :
2021-12-03T19:47:17.560+0800 ERROR runtime/panic.go:965
[session.handlePackage] panic session
{server:TCP_SERVER:1:10.66.7.38:20002<->10.66.7.38:54018}: err=reflect: call of
reflect.Value.Interface on zero Value
goroutine 13 [running]:
github.com/apache/dubbo-getty.(*session).handlePackage.func1(0x14000297b80,
0x140006aff60)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/session.go:525
+0x3f8
panic(0x103610f40, 0x14000124f60)
/usr/local/go/src/runtime/panic.go:965 +0x14c
reflect.valueInterface(0x0, 0x0, 0x0, 0x1, 0x1035ba900, 0x14000715610)
/usr/local/go/src/reflect/value.go:1021 +0x174
reflect.Value.Interface(...)
/usr/local/go/src/reflect/value.go:1016
github.com/apache/dubbo-go-hessian2.ConvertSliceValueType(0x103871488,
0x10359de40, 0x10359df00, 0x14000124f00, 0x97, 0x102bb492c, 0x140006aef48,
0x102bb48f8, 0x140006aef48, 0x102bb490c)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/codec.go:469
+0x458
github.com/apache/dubbo-go-hessian2.unpackRefHolder(0x10359de40,
0x1400071a8e8, 0x197, 0x103871488, 0x10359de40, 0x1400024f950, 0x140006aeff8,
0x102bc5758)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/codec.go:420
+0x4c
github.com/apache/dubbo-go-hessian2.SetSlice(0x10359de40, 0x1400071a8e8,
0x197, 0x10365cc20, 0x1400024f950, 0x0, 0x10359de40)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/codec.go:400
+0x104
github.com/apache/dubbo-go-hessian2.(*Decoder).decInstance(0x1400073c730,
0x103871488, 0x1036de460, 0x1400004f900, 0x10417a6c0, 0x0, 0x0, 0x1400004f900)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/object.go:510
+0x380
github.com/apache/dubbo-go-hessian2.(*Decoder).decObject(0x1400073c730,
0x60, 0x0, 0x0, 0x8, 0x140001a6db0)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/object.go:697
+0x190
github.com/apache/dubbo-go-hessian2.(*Decoder).DecodeValue(0x1400073c730,
0x0, 0x0, 0x0, 0x1)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/decode.go:285
+0x4d4
github.com/apache/dubbo-go-hessian2.(*Decoder).decObject(0x1400073c730,
0x43, 0x0, 0x0, 0x0, 0x17)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/object.go:656
+0x5bc
github.com/apache/dubbo-go-hessian2.(*Decoder).DecodeValue(0x1400073c730,
0x140001af4a0, 0x1, 0xa, 0x1029d5ef0)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/decode.go:285
+0x4d4
github.com/apache/dubbo-go-hessian2.(*Decoder).Decode(0x1400073c730,
0x140001d68c0, 0x17, 0xffffffffffffffff, 0x140001af4a0)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/decode.go:214
+0x28
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.unmarshalRequestBody(0x14000218490,
0x105, 0x105, 0x140001e2210, 0x0, 0x0)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/hessian.go:244
+0x2e8
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.HessianSerializer.Unmarshal(0x14000218490,
0x105, 0x105, 0x140001e2210, 0x0, 0x0)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/hessian.go:56
+0x98
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.(*ProtocolCodec).Decode(0x1400024f800,
0x140001e2210, 0x18, 0x1035e9280)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/codec.go:186
+0x138
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.(*DubboPackage).Unmarshal(0x140001e2210,
0x7, 0x7)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/package.go:93
+0xac
dubbo.apache.org/dubbo-go/v3/protocol/dubbo.(*DubboCodec).decodeRequest(0x104178148,
0x14000218360, 0x115, 0x115, 0x0, 0x104147e60, 0x1400069eca8, 0x102885e08)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/dubbo_codec.go:189
+0xd0
dubbo.apache.org/dubbo-go/v3/protocol/dubbo.(*DubboCodec).Decode(0x104178148,
0x14000218360, 0x115, 0x115, 0x1400069ed38, 0x102885aa4, 0x14000218360, 0x0,
0x0, 0x115)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/dubbo_codec.go:165
+0x50
dubbo.apache.org/dubbo-go/v3/remoting/getty.(*RpcServerPackageHandler).Read(0x140005bc018,
0x1038721d0, 0x14000297b80, 0x14000218360, 0x115, 0x115, 0x0, 0x0, 0x0, 0x0,
...)
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/getty/readwriter.go:104
+0x58
github.com/apache/dubbo-getty.(*session).handleTCPPackage(0x14000297b80,
0x0, 0x0)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/session.go:627
+0x1f4
github.com/apache/dubbo-getty.(*session).handlePackage(0x14000297b80)
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/session.go:549
+0x78
created by github.com/apache/dubbo-getty.(*session).run
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/session.go:503
+0x240
runtime.gopanic
/usr/local/go/src/runtime/panic.go:965
reflect.valueInterface
/usr/local/go/src/reflect/value.go:1021
reflect.Value.Interface
/usr/local/go/src/reflect/value.go:1016
github.com/apache/dubbo-go-hessian2.ConvertSliceValueType
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/codec.go:469
github.com/apache/dubbo-go-hessian2.unpackRefHolder
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/codec.go:420
github.com/apache/dubbo-go-hessian2.SetSlice
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/codec.go:400
github.com/apache/dubbo-go-hessian2.(*Decoder).decInstance
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/object.go:510
github.com/apache/dubbo-go-hessian2.(*Decoder).decObject
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/object.go:697
github.com/apache/dubbo-go-hessian2.(*Decoder).DecodeValue
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/decode.go:285
github.com/apache/dubbo-go-hessian2.(*Decoder).decObject
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/object.go:656
github.com/apache/dubbo-go-hessian2.(*Decoder).DecodeValue
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/decode.go:285
github.com/apache/dubbo-go-hessian2.(*Decoder).Decode
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/decode.go:214
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.unmarshalRequestBody
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/hessian.go:244
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.HessianSerializer.Unmarshal
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/hessian.go:56
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.(*ProtocolCodec).Decode
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/codec.go:186
dubbo.apache.org/dubbo-go/v3/protocol/dubbo/impl.(*DubboPackage).Unmarshal
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/impl/package.go:93
dubbo.apache.org/dubbo-go/v3/protocol/dubbo.(*DubboCodec).decodeRequest
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/dubbo_codec.go:189
dubbo.apache.org/dubbo-go/v3/protocol/dubbo.(*DubboCodec).Decode
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/protocol/dubbo/dubbo_codec.go:165
dubbo.apache.org/dubbo-go/v3/remoting/getty.(*RpcServerPackageHandler).Read
/Users/develper/go/pkg/mod/dubbo.apache.org/dubbo-go/[email protected]/remoting/getty/readwriter.go:104
github.com/apache/dubbo-getty.(*session).handleTCPPackage
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/session.go:627
github.com/apache/dubbo-getty.(*session).handlePackage
/Users/develper/go/pkg/mod/github.com/apache/[email protected]/session.go:549
**What you expected to happen**:
A slice with some of zero value int32 as expected. []int32{0,.....}
**How to reproduce it (as minimally and precisely as possible)**:
**Anything else we need to know?**:
A working around is to define []interface{} map to the List<Integer>.
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