ReferenceBean's getObject() called in toString()

[beiwei30]

Intellij Idea's debugger renders object to string in object view (Preferences -> Build, Execution, Deployment -> Debugger -> Data Views -> Java -> Enable 'toString()' object view). This behavior is enabled by default and it leads some strange problem when debug in Dubbo, for examples: #2431, or user may observe a ReferenceConfig may init twice or ReferenceConfig#urls may have two same entries if the breakpoint happens to set in the relevant places. You may interested in looking into the details from http://t.cn/EAhta27, where @code4wt gives the excellent analysis.

[carryxyh]

@beiwei30
How do u think about that toString method print getObject's result.
IMO, toString method should not print this info because this is meaningless.
So I support @code4wt revision.

[beiwei30]

@carryxyh I like the proposed pull request from @code4wt

[code4wt]

I like the proposed pull request from @code4wt

Thanks.

[carryxyh]

Nice pr and analysis.
Thx