mirror of https://github.com/node-red/node-red.git
44 lines
2.5 KiB
HTML
44 lines
2.5 KiB
HTML
<!--
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Copyright JS Foundation and other contributors, http://js.foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<script type="text/x-red" data-help-name="json">
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<p>在JSON字符串及其JavaScript對象表示形式之間相互轉換。</p>
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<h3>輸入</h3>
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<dl class="message-properties">
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<dt>payload<span class="property-type">object | 字符串</span></dt>
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<dd>JavaScript對象或JSON字符串。</dd>
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<dt>schema<span class="property-type">object</span></dt>
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<dd>可選的JSON Schema對象用于驗證有效負載。在將<code>msg</code>發送到下一個節點之前，將刪除該屬性。</dd>
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</dl>
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<h3>Outputs</h3>
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<dl class="message-properties">
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<dt>payload<span class="property-type">object | 字符串</span></dt>
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<dd>
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<ul>
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<li>如果輸入是JSON字符串，它將嘗試將其解析爲JavaScript對象。</li>
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<li>如果輸入是JavaScript對象，它將創建一個JSON字符串。並可以選擇對此JSON字符串進行整形。</li>
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</ul>
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</dd>
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<dt>schemaError<span class="property-type">數組</span></dt>
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<dd>如果JSON模式驗證失敗，則catch節點將具有包含錯誤數組的<code>schemaError</code>屬性。</dd>
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</dl>
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<h3>詳細</h3>
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<p>默認的轉換目標是<code>msg.payload</code>，但是也可以轉換消息的其它屬性。</p>
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<p>您可以將其設置爲僅執行特定的轉換，而不是自動選擇雙向轉換。例如，即使對<code>HTTP In</code>節點的請求未正確設置‘content-type’，也可以使用它來確保JSON節點的轉換結果是JavaScript對象</p>
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<p>如果指定了轉換爲JSON字符串，則不會對收到的字符串進行進一步的檢查。也就是說，即使指定了格式化選項，它也不會檢查字符串是否正確爲JSON或對JSON執行整形。</p>
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<p>有關JSON模式的更多詳細信息，請查閱<a href="http://json-schema.org/latest/json-schema-validation.html">規範</a>.</p>
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</script>
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