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nats.docs/_examples/publish_json.html
2019-06-28 18:38:16 -05:00

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<div class="tab-wrap">
<input type="radio" id="publish_json_go" name="publish_json" class="tab" checked>
<label for="publish_json_go" class="api-lang" data-language="go">Go</label>
<input type="radio" id="publish_json_java" name="publish_json" class="tab">
<label for="publish_json_java" class="api-lang" data-language="java">Java</label>
<input type="radio" id="publish_json_js" name="publish_json" class="tab">
<label for="publish_json_js" class="api-lang" data-language="js">JavaScript</label>
<input type="radio" id="publish_json_py" name="publish_json" class="tab">
<label for="publish_json_py" class="api-lang" data-language="py">Python</label>
<input type="radio" id="publish_json_ruby" name="publish_json" class="tab">
<label for="publish_json_ruby" class="api-lang" data-language="ruby">Ruby</label>
<input type="radio" id="publish_json_ts" name="publish_json" class="tab">
<label for="publish_json_ts" class="api-lang" data-language="ts">TypeScript</label>
<div class="tab__content">
<pre id="publish_json_go_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/go-nats-examples/blob/master/api-examples/publish_json/main.go#L10-33"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-go">nc, err := nats.Connect(&#34;demo.nats.io&#34;)
if err != nil {
log.Fatal(err)
}
defer nc.Close()
ec, err := nats.NewEncodedConn(nc, nats.JSON_ENCODER)
if err != nil {
log.Fatal(err)
}
defer ec.Close()
// Define the object
type stock struct {
Symbol string
Price int
}
// Publish the message
if err := ec.Publish(&#34;updates&#34;, &amp;stock{Symbol: &#34;GOOG&#34;, Price: 1200}); err != nil {
log.Fatal(err)
}
</code></pre>
</div>
<div class="tab__content">
<pre id="publish_json_java_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/java-nats-examples/blob/master/src/main/java/io/nats/examples/PublishJSON.java#L12-44"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-java">class StockForJsonPub {
public String symbol;
public float price;
}
public class PublishJSON {
public static void main(String[] args) {
try {
Connection nc = Nats.connect(&#34;nats://demo.nats.io:4222&#34;);
// Create the data object
StockForJsonPub stk = new StockForJsonPub();
stk.symbol=&#34;GOOG&#34;;
stk.price=1200;
// use Gson to encode the object to JSON
GsonBuilder builder = new GsonBuilder();
Gson gson = builder.create();
String json = gson.toJson(stk);
// Publish the message
nc.publish(&#34;updates&#34;, json.getBytes(StandardCharsets.UTF_8));
// Make sure the message goes through before we close
nc.flush(Duration.ZERO);
nc.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
</code></pre>
</div>
<div class="tab__content">
<pre id="publish_json_js_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/node-nats-examples/blob/master/src/publisher_samples.js#L23-26"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">let nc = NATS.connect({url: &#34;nats://demo.nats.io:4222&#34;, json: true});
nc.publish(&#39;updates&#39;, {ticker: &#39;GOOG&#39;, price: 1200});
</code></pre>
</div>
<div class="tab__content">
<pre id="publish_json_py_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/asyncio-nats-examples/blob/master/publish_json.py#L7-14"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-python">nc = NATS()
await nc.connect(servers=[&#34;nats://demo.nats.io:4222&#34;])
await nc.publish(&#34;updates&#34;, json.dumps({&#34;symbol&#34;: &#34;GOOG&#34;, &#34;price&#34;: 1200 }).encode())
</code></pre>
</div>
<div class="tab__content">
<pre id="publish_json_ruby_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ruby-nats-examples/blob/master/publish_json.rb#L1-8"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-ruby">require &#39;nats/client&#39;
require &#39;json&#39;
NATS.start(servers:[&#34;nats://127.0.0.1:4222&#34;]) do |nc|
nc.publish(&#34;updates&#34;, {&#34;symbol&#34;: &#34;GOOG&#34;, &#34;price&#34;: 1200}.to_json)
end
</code></pre>
</div>
<div class="tab__content">
<pre id="publish_json_ts_content"><a class="toolbar-icons pull-right" target="_blank" href="https://github.com/nats-io/ts-nats-examples/blob/master/src/publisher_samples.ts#L19-26"><i class="mdi mdi-github-circle" title="View on GitHub"></i></a><a class="toolbar-icons pull-right"><i class="mdi mdi-content-copy js-copy" title="Copy to Clipboard"></i></a><span class="copy-msg pull-right"></span><code class="language-javascript">let nc = await connect({
url: &#34;nats://demo.nats.io:4222&#34;,
payload: Payload.JSON
});
nc.publish(&#39;updates&#39;, {ticker: &#39;GOOG&#39;, price: 1200});
</code></pre>
</div>
</div>