Re: [protobuf] Re: MessageToJsonString output empty

['Feng Xiao' via Protocol Buffers]

On Sun, Jul 9, 2017 at 4:52 AM, hce h  wrote:

> Let me add more details, here is what I have a test program:
>
> test.proto:
>
> syntax = "proto3";
> package test;
>
> message TestMessage {
> string query = 1;
> int32 page_number = 2;  // Which page number do we want?
> int32 result_per_page = 3;  // Number of results to return per page.
> }
>
> test::TestMessage message;
>
If you don't set any value in the message, the JSON output is expected to
be empty.

If you want to print out values even not set, try the
always_print_primitive_fields flag:
https://github.com/google/protobuf/blob/master/src/google/protobuf/util/json_util.h#L63


> std::string output;
> google::protobuf::util::MessageToJsonString(message, );
> printf("Convert: %d %s\n", output.length(), output.c_str());
>
> Convert: 2 {}
>
>
>
>
>
>
> On Sunday, July 9, 2017 at 1:01:39 PM UTC+10, hce h wrote:
>>
>> Hi,
>>
>> I tried to call MessageToJsonString on Protobuf 3.3.0, but the output string 
>> was empty, output = "{}". Has anyone made it work? If so, could you please 
>> show me an example?
>>
>> Thank you.
>>
>>
>> --
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[protobuf] Re: MessageToJsonString output empty

[hce h]

Let me add more details, here is what I have a test program:

test.proto:

syntax = "proto3";
package test;

message TestMessage {
string query = 1;
int32 page_number = 2;  // Which page number do we want?
int32 result_per_page = 3;  // Number of results to return per page.
}

test::TestMessage message;
std::string output;
google::protobuf::util::MessageToJsonString(message, );
printf("Convert: %d %s\n", output.length(), output.c_str());

Convert: 2 {}





On Sunday, July 9, 2017 at 1:01:39 PM UTC+10, hce h wrote:
>
> Hi,
>
> I tried to call MessageToJsonString on Protobuf 3.3.0, but the output string 
> was empty, output = "{}". Has anyone made it work? If so, could you please 
> show me an example?
>
> Thank you.
>
>
>

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