Telnet does not support invoke a method of set parameter

[JoneWeng]

• [ x ] I have searched the issues of this repository and believe that this is not a duplicate.
• [ x ] I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: latest
• Operating System version: mac
• Java version: 1.8

Steps to reproduce this issue

public interface DemoService {
    
    int getListSize(List list);
    int getSetSize(Set set);
    
}

2. telnet localhost 20881
3. invoke xxx.getListSize([1,2,3])
4. invoke xxx.getSetSize([1,2,3])

Expected Result

3. ok
4. ok

Actual Result

3. ok
4. No such method

[kexianjun]

may this pr #2801 can solve you problem.

[JoneWeng]

no, did not resolve this problem

[JoneWeng]

the cause of the problem: org.apache.dubbo.rpc.protocol.dubbo.telnet.InvokeTelnetHandler#isMatch

// arg(JSONArray instance) is Assignable From List
// Set not match
else if (arg instanceof Collection) {
        if (!type.isArray() && !type.isAssignableFrom(arg.getClass())) {
            return false;
        }
}

actually, PojoUtils#realize can convert JSONArray to Set

[zonghaishang]

invoke DemoService.getSetSize(Set[1,2,3])