"# \u5982\u4f55\u5728NodeRed\u4e2d\uff0c\u5904\u7406\u8bbe\u5907\u7684json\uff0cxml\u683c\u5f0f\u7684\u6570\u636e\n\n> 2023-01-15 | 2023-01-15\n> https:\/\/www.modbus.cn\/en\/11439.html\n\n**Node-RED**\n\n---\n\n## \u524d\u8a00\n\n\u5728\u4f7f\u7528node-red\u5904\u7406\u5404\u79cd\u4e1a\u52a1\u573a\u666f\u65f6\uff0c\u6211\u4eec\u65f6\u5e38\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u6570\u636e\u683c\u5f0f\uff0c\u6700\u5e38\u89c1\u7684\u662fjson\u6570\u636e\u683c\u5f0f\uff0c\u5176\u6b21\u8fd8\u6709xml\uff0cyaml\uff0c\u4ee5\u53cacsv\u683c\u5f0f\u7684\u6570\u636e\u683c\u5f0f\u3002\u8fd9\u4e9b\u90fd\u662f\u9700\u8981\u6211\u4eec\u5bf9\u5176\u6570\u636e\u683c\u5f0f\u6709\u4e00\u70b9\u89e3\u6790\u548c\u8f6c\u5316\u7684\u80fd\u529b\uff0c\u4eca\u5929\u8fd9\u7bc7\u6587\u7ae0\u6211\u5c31\u6765\u6559\u5927\u5bb6\u5982\u4f55\u5904\u7406json \u548c xml\u6570\u636e\u683c\u5f0f\u3002\n\n## node-red\u4e2djson\u683c\u5f0f\u7684\u8f6c\u6362\n\n\u5728node-red\u4e2d\u5904\u7406json\u6570\u636e\u683c\u5f0f\u662f\u6700\u7b80\u5355\u7684\u3002\u6700\u4e3b\u8981\u7684\u539f\u56e0\u662fnode-red\u672c\u8eab\u5c31\u662f\u4f7f\u7528javascript\u8bed\u8a00\u6765\u7f16\u5199\u7684\u3002\u800cjavascript\u4e2d\u6700\u5e38\u7528\u7684\u5c31\u662fjson\u6570\u636e\u683c\u5f0f\u3002\u58f0\u660e\u4e00\u4e2ajson\u6570\u636e\u683c\u5f0f\u5f88\u7b80\u5355\u3002\n\n```\n# json \u6570\u636e\u7684\u58f0\u660e\nconst person = {name: 'fizzz', age:12}\n# \u6253\u5370\u6570\u636e\nconsole.log(person.name)\n# \u91cd\u65b0\u8d4b\u503c\nperson.name = 'tom'\n\n```\n\njson \u6570\u636e\u683c\u5f0f\u7684\u64cd\u4f5c\u5c31\u662f\u8fd9\u6837\u7684\u7b80\u5355\u3002\n\n\u4e0b\u9762\u662f\u4e00\u4e2ajson\u8f6c\u6362\u7684\u6d41\uff0c\u5927\u5bb6\u53ef\u4ee5\u4ece\u8fd9\u4e2a\u6d41\u4e2d\u4f53\u9a8c\u7684\u5bf9json\u6570\u636e\u7684\u64cd\u4f5c\u3002\n\n```\n[{\"id\":\"634256b7.2d6818\",\"type\":\"inject\",\"z\":\"64133d39.bb0394\",\"name\":\"JSON String\",\"topic\":\"\",\"payload\":\"{\"a\":1}\",\"payloadType\":\"str\",\"repeat\":\"\",\"crontab\":\"\",\"once\":false,\"onceDelay\":0.1,\"x\":110,\"y\":80,\"wires\":[[\"a2fe0fc8.095e1\"]]},{\"id\":\"a2fe0fc8.095e1\",\"type\":\"json\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"property\":\"payload\",\"action\":\"\",\"pretty\":false,\"x\":270,\"y\":80,\"wires\":[[\"9a4ce2b8.47698\"]]},{\"id\":\"9a4ce2b8.47698\",\"type\":\"debug\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"active\":true,\"tosidebar\":true,\"console\":false,\"tostatus\":false,\"complete\":\"false\",\"x\":430,\"y\":80,\"wires\":[]},{\"id\":\"80032e2.7c92cd\",\"type\":\"inject\",\"z\":\"64133d39.bb0394\",\"name\":\"Object\",\"topic\":\"\",\"payload\":\"{\"a\":1}\",\"payloadType\":\"json\",\"repeat\":\"\",\"crontab\":\"\",\"once\":false,\"onceDelay\":0.1,\"x\":90,\"y\":120,\"wires\":[[\"cd40a0f4.4f5ac\"]]},{\"id\":\"cd40a0f4.4f5ac\",\"type\":\"json\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"property\":\"payload\",\"action\":\"\",\"pretty\":false,\"x\":270,\"y\":120,\"wires\":[[\"478b4106.4fd7c\"]]},{\"id\":\"478b4106.4fd7c\",\"type\":\"debug\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"active\":true,\"tosidebar\":true,\"console\":false,\"tostatus\":false,\"complete\":\"false\",\"x\":430,\"y\":120,\"wires\":[]}]\n\n```\n\n\u6548\u679c\u56fe\u5982\u4e0b\uff1a\n![\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0](https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/01\/20250915150004843.png)\njson \u6570\u636e\u7684\u5904\u7406\u4e3b\u8981\u662f\u501f\u52a9\u6765json\u6838\u5fc3\u8282\u70b9\uff0c\u5b83\u53ef\u4ee5\u5c06\u5b57\u7b26\u4e32\u4e0ejson\u6570\u636e\u4e92\u8f6c\u3002 \u975e\u5e38\u65b9\u4fbf\u3002\u5982\u679c\u8f6c\u6362\u5931\u8d25\u5c31\u4f1a\u62a5\u9519\u3002\njson \u8282\u70b9\u7684\u8be6\u7ec6\u914d\u7f6e\u5982\u4e0b\uff1a\n\n\u8f93\u5165\u53c2\u6570\uff1a\n`payload`\uff1aobject | \u5b57\u7b26\u4e32\nJavaScript\u5bf9\u8c61\u6216JSON\u5b57\u7b26\u4e32\u3002\n`schema`\uff1aobject\n\u53ef\u9009\u7684JSON Schema\u5bf9\u8c61\u7528\u4e8e\u9a8c\u8bc1\u6709\u6548\u8d1f\u8f7d\u3002\u5728\u5c06msg\u53d1\u9001\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9\u4e4b\u524d\uff0c\u5c06\u5220\u9664\u8be5\u5c5e\u6027\u3002\n\n\u8f93\u51fa\u53c2\u6570\uff1a\n`payload`\uff1aobject | \u5b57\u7b26\u4e32\n\u5982\u679c\u8f93\u5165\u662fJSON\u5b57\u7b26\u4e32\uff0c\u5b83\u5c06\u5c1d\u8bd5\u5c06\u5176\u89e3\u6790\u4e3aJavaScript\u5bf9\u8c61\u3002\n\u5982\u679c\u8f93\u5165\u662fJavaScript\u5bf9\u8c61\uff0c\u5b83\u5c06\u521b\u5efa\u4e00\u4e2aJSON\u5b57\u7b26\u4e32\u3002\u5e76\u53ef\u4ee5\u9009\u62e9\u5bf9\u6b64JSON\u5b57\u7b26\u4e32\u8fdb\u884c\u6574\u5f62\u3002\n`schema`\uff1aError\u6570\u7ec4\n\u5982\u679cJSON\u6a21\u5f0f\u9a8c\u8bc1\u5931\u8d25\uff0c\u5219catch\u8282\u70b9\u5c06\u5177\u6709\u5305\u542b\u9519\u8bef\u6570\u7ec4\u7684schemaError\u5c5e\u6027\u3002\n\n## node-red\u4e2d\u5904\u7406 xml\u683c\u5f0f\u7684\u6570\u636e\n\n\u5728ndoe-red\u4e2d\u5904\u7406xml\u7684\u6570\u636e\uff0c\u4e3b\u8981\u573a\u666f\u662f json\u6570\u636e\u8f6c\u6362\u4e3axml\u6570\u636e\uff0c\u6216\u8005xml\u683c\u5f0f\u7684\u6570\u636e\u8f6c\u6362\u4e3ajson\u6570\u636e\u683c\u5f0f\u3002\u5176\u4e2d\u4e3b\u8981\u501f\u52a9\u7684\u662fxml\u6838\u5fc3\u8282\u70b9\uff0c\u5176\u5e95\u5c42\u662f\u4f7f\u7528\u4e86xml2json\u8fd9\u4e2a\u5e93\u3002\n\nxml\u8fd9\u4e2a\u8282\u70b9\u7684\u9700\u8981\u7684\u8f93\u5165\u6709\u4e8c\u4e2a\u53c2\u6570\n\n`payload` \uff1a object | \u5b57\u7b26\u4e32\n\u8bbe\u7f6e\u4e3aJavaScript\u5bf9\u8c61\u6216XML\u5b57\u7b26\u4e32\u3002\n\n`options`\uff1aobject\n\u53ef\u4ee5\u5c06\u9009\u9879\u4f20\u9012\u7ed9\u5185\u90e8\u4f7f\u7528\u7684XML\u8f6c\u6362\u5e93\u3002\u8bf7\u53c2\u89c1 xml2js\u6587\u6863 \u6765\u83b7\u53d6\u66f4\u591a\u4fe1\u606f\u3002\n\n\u8f93\u51fa\u7ed3\u679c\u662f\n`payload` : object | \u5b57\u7b26\u4e32\n\u5982\u679c\u8f93\u5165\u662f\u5b57\u7b26\u4e32\uff0c\u5b83\u5c06\u5c1d\u8bd5\u5c06\u5176\u89e3\u6790\u4e3aXML\u5e76\u521b\u5efa\u4e00\u4e2aJavaScript\u5bf9\u8c61\u3002\n\u5982\u679c\u8f93\u5165\u662fJavaScript\u5bf9\u8c61\uff0c\u5b83\u5c06\u5c1d\u8bd5\u6784\u5efaXML\u5b57\u7b26\u4e32\u3002\n\n\u53e6\u5916\u5728XML\u548c\u5bf9\u8c61\u4e4b\u95f4\u8fdb\u884c\u8f6c\u6362\u65f6\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0bXML\u5c5e\u6027\u4f1a\u6dfb\u52a0\u5230\u540d\u4e3a$\u7684\u5c5e\u6027\u4e2d\u3002\u5c06\u6587\u672c\u5185\u5bb9\u6dfb\u52a0\u5230\u540d\u4e3a_\u7684\u5c5e\u6027\u4e2d\u3002\u8fd9\u4e9b\u5c5e\u6027\u540d\u79f0\u53ef\u4ee5\u5728\u8282\u70b9\u8bbe\u7f6e\u4e2d\u66f4\u6539\u3002\n\n\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\uff0c\u5927\u5bb6\u53ef\u4ee5\u4ece\u8fd9\u4e2a\u4f8b\u5b50\u611f\u53d7\u5230node-red\u5bf9xml\u6570\u636e\u4e0ejson\u6570\u636e\u683c\u5f0f\u7684\u8f6c\u6362\n\n```\n[{\"id\":\"1b546d47.9474e3\",\"type\":\"inject\",\"z\":\"64133d39.bb0394\",\"name\":\"XML String\",\"topic\":\"\",\"payload\":\"{\"a\":1}\",\"payloadType\":\"str\",\"repeat\":\"\",\"crontab\":\"\",\"once\":false,\"onceDelay\":0.1,\"x\":100,\"y\":260,\"wires\":[[\"d72b2bfd.77d068\"]]},{\"id\":\"1adf407d.6c4fe\",\"type\":\"debug\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"active\":true,\"tosidebar\":true,\"console\":false,\"tostatus\":false,\"complete\":\"false\",\"x\":590,\"y\":260,\"wires\":[]},{\"id\":\"46638890.8ae758\",\"type\":\"inject\",\"z\":\"64133d39.bb0394\",\"name\":\"Object\",\"topic\":\"\",\"payload\":\"{\"note\":{\"$\":{\"priority\":\"high\"},\"to\":[\"Nick\"],\"from\":[\"Dave\"],\"heading\":[\"Reminder\"],\"body\":[\"Update the website\"]}}\",\"payloadType\":\"json\",\"repeat\":\"\",\"crontab\":\"\",\"once\":false,\"onceDelay\":0.1,\"x\":90,\"y\":300,\"wires\":[[\"dae1d291.de0d2\"]]},{\"id\":\"6fefca67.3669e4\",\"type\":\"debug\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"active\":true,\"tosidebar\":true,\"console\":false,\"tostatus\":false,\"complete\":\"false\",\"x\":430,\"y\":300,\"wires\":[]},{\"id\":\"d72b2bfd.77d068\",\"type\":\"template\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"field\":\"payload\",\"fieldType\":\"msg\",\"format\":\"text\",\"syntax\":\"plain\",\"template\":\"<note priority=\"high\">n  <to>Nick<\/to>n  <from>Dave<\/from>n  <heading>Reminder<\/heading>n  <body>Update the website<\/body>n<\/note>\",\"output\":\"str\",\"x\":280,\"y\":260,\"wires\":[[\"1746464a.87aa4a\"]]},{\"id\":\"1746464a.87aa4a\",\"type\":\"xml\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"property\":\"payload\",\"attr\":\"\",\"chr\":\"\",\"x\":430,\"y\":260,\"wires\":[[\"1adf407d.6c4fe\"]]},{\"id\":\"dae1d291.de0d2\",\"type\":\"xml\",\"z\":\"64133d39.bb0394\",\"name\":\"\",\"property\":\"payload\",\"attr\":\"\",\"chr\":\"\",\"x\":250,\"y\":300,\"wires\":[[\"6fefca67.3669e4\"]]}]\n\n```\n\n\u6d41\u793a\u610f\u56fe\n![\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0](https:\/\/image.modbus.cn\/wp-content\/uploads\/2023\/01\/20250915150011139.png)\n\n---\n*modbus.cn*\n"