获取解析后的 JSON 响应
问题
您希望将 HTTP 请求的 JSON 响应作为已解析的 Javascript 对象返回。
解决方案
默认情况下，HTTP 请求节点将 JSON 响应的主体作为字符串返回到 msg.payload 中。将此节点的 返回 配置更改为 已解析的 JSON 对象，以便将 msg.payload 中的 JSON 响应解析为下游节点可以轻松访问的对象。
示例
[{"id":"14c60a10.794df6","type":"http request","z":"c9a81b70.8abed8","name":"","method":"GET","ret":"obj","url":"https://jsonplaceholder.typicode.com/posts/{{post}}","tls":"","x":390,"y":500,"wires":[["b4ea8dd4.61a05"]]},{"id":"b4ea8dd4.61a05","type":"debug","z":"c9a81b70.8abed8","name":"","active":true,"console":"false","complete":"payload.title","x":570,"y":500,"wires":[]},{"id":"3479192a.04f016","type":"inject","z":"c9a81b70.8abed8","name":"post id","topic":"","payload":"2","payloadType":"str","repeat":"","crontab":"","once":false,"x":90,"y":500,"wires":[["e69250cf.368fd"]]},{"id":"e69250cf.368fd","type":"change","z":"c9a81b70.8abed8","name":"","rules":[{"t":"set","p":"post","pt":"msg","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":230,"y":500,"wires":[["14c60a10.794df6"]]}]
我们通过更改 HTTP 请求节点配置，重新配置了设置请求 URL 的 URL 配方中的流。已修改 调试节点，使其仅显示已解析 JSON 响应的 title 属性
"qui est esse"
讨论
如果您的 HTTP 请求返回 XML，则可以使用 XML 节点从 XML 文档中解析 Javascript 对象。
