- [ ] I have searched the
[issues](https://github.com/apache/incubator-dubbo/issues) of this repository
and believe that this is not a duplicate.
- [ ] I have checked the
[FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md) of this
repository and believe that this is not a duplicate.
### Environment
* Dubbo version: master branch
* Operating System version: Mac os
* Java version: 1.8
### Steps to reproduce this issue
`org.apache.dubbo.rpc.protocol.dubbo.support.DemoService` add method
```java
String getPerson(Yee yee);
```
`org.apache.dubbo.rpc.protocol.dubbo.support.DemoServiceImpl`
```java
@Override
public String getPerson(Yee yee) {
return yee.getAddress();
}
```
```java
public class Yee implements Serializable {
private String address;
}
public class Man implements Serializable {
private static final long serialVersionUID = 1L;
private String name;
private int age;
}
```
`org.apache.dubbo.rpc.protocol.dubbo.support.DemoServiceImpl` add UT
```java
@Test
public void testInvokeMultiJsonParamMethod2() throws RemotingException {
mockChannel = mock(Channel.class);
given(mockChannel.getAttribute("telnet.service")).willReturn(null);
given(mockChannel.getLocalAddress()).willReturn(NetUtils.toAddress("127.0.0.1:5555"));
given(mockChannel.getRemoteAddress()).willReturn(NetUtils.toAddress("127.0.0.1:20886"));
ProviderModel providerModel = new
ProviderModel("org.apache.dubbo.rpc.protocol.dubbo.support.DemoService", new
DemoServiceImpl(), DemoService.class);
ApplicationModel.initProviderModel("org.apache.dubbo.rpc.protocol.dubbo.support.DemoService",
providerModel);
String param = "{\"address\":\"Dubbo\"}";
String result = invoke.telnet(mockChannel, "getPerson(" + param + ")");
assertTrue(result.contains("result: \"Dubbo"));
}
```
1. UT fail,Find the wrong overload method
### Expected Result
Call `getPerson(Yee yee)`
### Actual Result
Call `getPerson(Man man)`
### Suggestion
If the overload method parameters are different in length, allowed to not pass
`class` parameter, otherwise prompted user must pass the `class` parameter.
@beiwei30
[ Full content available at:
https://github.com/apache/incubator-dubbo/issues/3177 ]
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