"# node-red\u4e2dhttp request\u8282\u70b9\u5404\u79cd\u8bf7\u6c42\u8be6\u89e3\n\n> 2023-02-02 | 2023-02-02\n> https:\/\/www.modbus.cn\/en\/11543.html\n\n**Node-RED**\n\n---\n\n## \u524d\u8a00\n\n\u5728node-red\u4e2d\uff0c\u5982\u679c\u4f60\u60f3\u8981\u8bf7\u6c42\u5916\u90e8\u8d44\u6e90\uff0c\u6bd4\u5982\u83b7\u53d6\u5f53\u5730\u5929\u6c14\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u53ef\u4ee5\u4f7f\u7528http request\u8282\u70b9\uff0c\u8fd9\u4e2a\u8282\u70b9\u53ef\u4ee5\u8ba9\u4f60\u7684node-red\u5e94\u7528\u96c6\u6210\u5404\u79cd\u63a5\u53e3\uff0c\u6570\u636e\u3002\u4e0d\u53d7\u8de8\u57df\u7684\u9650\u5236\uff0c\u53ef\u4ee5\u8bbf\u95ee\u5927\u90e8\u5206\u7684http\u63a5\u53e3\u3002\u652f\u6301\u7684\u8bf7\u6c42\u65b9\u6cd5\u4e5f\u6bd4\u8f83\u5168\uff0cGET,PUT,POST,PATCH\u6216DELETE\u90fd\u662f\u53ef\u4ee5\u7684\u3002\u5e76\u4e14\u652f\u6301\u81ea\u5b9a\u4e49\u5934\u90e8\uff0ccookie\uff0c\u8bf7\u6c42\u5730\u5740\u6a21\u677f\u5316\uff0c\u4e0a\u4f20\u6587\u4ef6\uff0c\u8bf7\u6c42\u8d85\u65f6\u3002\u7b49\u5404\u79cd\u5f3a\u5927\u7684\u529f\u80fd\u3002\u672c\u7bc7\u6587\u4ef6\u5c31\u6765\u8be6\u7ec6\u4ecb\u7ecd\u4e00\u4e0b\u4ed6\u7684\u5404\u79cd\u7528\u6cd5\uff0c\u5e2e\u52a9\u5927\u5bb6\u5feb\u901f\u5730\u638c\u63e1\u8d77\u6765\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\u3002\n\n## \u8282\u70b9\u914d\u7f6e\u6982\u8ff0\n\n\u8be5\u8282\u70b9 \u6709\u8f93\u5165\uff0c\u6709\u8f93\u51fa\n\u8f93\u5165\u7684\u914d\u7f6e\u9879\u6709\u8fd9\u4e9b\n\n`url` \u5982\u679c\u672a\u5728\u8282\u70b9\u4e2d\u914d\u7f6e\uff0c\u5219\u6b64\u53ef\u9009\u5c5e\u6027\u8bbe\u7f6e\u8bf7\u6c42\u7684url\u3002\n`method` \u5982\u679c\u672a\u5728\u8282\u70b9\u4e2d\u914d\u7f6e\uff0c\u5219\u6b64\u53ef\u9009\u5c5e\u6027\u8bbe\u7f6e\u8bf7\u6c42\u7684HTTP\u65b9\u6cd5\u3002\u5fc5\u987b\u662fGET,PUT,POST,PATCH\u6216DELETE\u4e4b\u4e00\u3002\n`headers` \u8bbe\u7f6e\u8bf7\u6c42\u7684HTTP\u5934\u3002\n`cookies` \u5982\u679c\u8bbe\u7f6e\uff0c\u5219\u53ef\u7528\u4e8e\u53d1\u9001\u5e26\u6709\u8bf7\u6c42\u7684cookie\u3002\n`payload` \u53d1\u9001\u4e3a\u8bf7\u6c42\u7684\u6b63\u6587\u3002\n`rejectUnauthorized` \u5982\u679c\u8bbe\u7f6e\u4e3afalse\uff0c\u5219\u5141\u8bb8\u5bf9\u4f7f\u7528\u81ea\u7b7e\u540d\u8bc1\u4e66\u7684https\u7ad9\u70b9\u8fdb\u884c\u8bf7\u6c42\u3002\n`followRedirects` \u5982\u679c\u8bbe\u7f6e\u4e3afalse\uff0c\u5219\u963b\u6b62\u9075\u5faa\u91cd\u5b9a\u5411\uff08HTTP 301\uff09\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u4e3atrue\n`requestTimeout` \u5982\u679c\u8bbe\u7f6e\u4e3a\u6b63\u6570\u6beb\u79d2\uff0c\u5c06\u8986\u76d6\u5168\u5c40\u8bbe\u7f6e\u7684httpRequestTimeout\u53c2\u6570\u3002\n\n\u8f93\u51fa\u7684\u53c2\u6570\n\n`payload` \u54cd\u5e94\u7684\u6b63\u6587\u3002\u53ef\u4ee5\u5c06\u8282\u70b9\u914d\u7f6e\u4e3a\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u8fd4\u56de\u4e3b\u4f53\uff0c\u5c1d\u8bd5\u5c06\u5176\u89e3\u6790\u4e3aJSON\u5b57\u7b26\u4e32\u6216\u5c06\u5176\u4fdd\u7559\u4e3a\u4e8c\u8fdb\u5236buffer\u3002\n`statusCode` \u54cd\u5e94\u7684\u72b6\u6001\u7801\uff0c\u5982\u679c\u8bf7\u6c42\u65e0\u6cd5\u5b8c\u6210\uff0c\u5219\u8fd4\u56de\u9519\u8bef\u7801\u3002\n`headers` \u5305\u542b\u54cd\u5e94\u5934\u7684\u5bf9\u8c61\u3002\n`responseUrl` \u5982\u679c\u5728\u5904\u7406\u8bf7\u6c42\u65f6\u53d1\u751f\u4efb\u4f55\u91cd\u5b9a\u5411\uff0c\u5219\u6b64\u5c5e\u6027\u4e3a\u6700\u7ec8\u91cd\u5b9a\u5411\u7684URL\u3002\u5426\u5219\u5219\u4e3a\u539f\u59cb\u8bf7\u6c42\u7684URL\u3002\n`responseCookies` \u5982\u679c\u54cd\u5e94\u5305\u542bcookie\uff0c\u5219\u6b64\u5c5e\u6027\u662f\u6bcf\u4e2acookie\u7684\u2018\u540d\u79f0\/\u503c\u2019\u952e\u503c\u5bf9\u7684\u5bf9\u8c61\u3002\n`redirectList` \u5982\u679c\u8bf7\u6c42\u88ab\u91cd\u5b9a\u5411\u4e86\u4e00\u6b21\u6216\u591a\u6b21\uff0c\u5219\u7d2f\u79ef\u7684\u4fe1\u606f\u5c06\u88ab\u6dfb\u52a0\u5230\u6b64\u5c5e\u6027\u3002\u201clocation\u201d\u662f\u4e0b\u4e00\u4e2a\u91cd\u5b9a\u5411\u76ee\u6807\u3002cookie\u662f\u4ece\u91cd\u5b9a\u5411\u6e90\u8fd4\u56de\u7684cookie\u3002\n\n\u4ee5\u4e0a\u662f\u7ffb\u8bd1\u7684\u5b98\u65b9\u82f1\u6587\u6587\u6863\u3002\u4e0b\u9762\u6211\u4eec\u770b\u4e00\u4e0b\u5177\u4f53\u7684\u7279\u6b8a\u7528\u6cd5\u3002\n\n## \u4f7f\u7528\u4ee3\u7801\u6765\u914d\u7f6ehttp request\u8282\u70b9\n\n\u8be5\u8282\u70b9\u7684\u8f93\u5165\u53c2\u6570\uff0c\u53ef\u4ee5\u5728\u914d\u7f6e\u9762\u677f\u91cc\uff0c\u914d\u7f6e\uff0c\n\n\u4f46\u540c\u65f6\u4e5f\u53ef\u4ee5\u5728\u6d41\u4e2d\u8bbe\u7f6e\u3002\n\u6bd4\u5982\u4f60\u8981\u7528GET\u65b9\u6cd5\u8bf7\u6c42`https:\/\/fizzz.blog.csdn.net\/`\u5730\u5740\u3002\n\n\u9664\u4e86\u5728\u9762\u677f\u91cc\u914d\u7f6e\u5916\uff0c\u4f60\u8fd8\u53ef\u4ee5\u8fd9\u6837\u5728http request\u63a5\u53e3\u524d\u4f7f\u7528function\u8282\u70b9\u8fd9\u6837\u8bf7\u6c42\u53c2\u6570\n\n```\nmsg.method = 'GET'\nmsg.url = 'https:\/\/fizzz.blog.csdn.net\/'\n\n```\n\n\u9664\u6b64\u4e4b\u5916\uff0c\u4f60\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u591a\u4e2a\u81ea\u5b9a\u4e49\u7684Headers\n\u5982\u4f8b\n\n```\nmsg.method = 'GET'\nmsg.url = 'https:\/\/fizzz.blog.csdn.net\/?name=fizz&age=18'\nmsg.headers = {}\nmsg.headers['X-Auth-User'] = 'fizz'\nmsg.headers['X-Auth-Key'] = 'fizz-key'\n\n```\n\n\u5728\u914d\u7f6ehttp request \u8282\u70b9\u7684\u914d\u7f6e\u53c2\u6570\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u6a21\u677f\u6765\u5f15\u7528msg\u4e2d\u7684\u53d8\u91cf\n\u5982\u4e0b\uff0c\u5c06url\u914d\u7f6e\u6210\u8fd9\u6837\n`https:\/\/{{domin}}.blog.csdn.net\/`\n\n\u53d8\u91cf`domin`\u5728\u4e0a\u6e38\u6ce8\u5165\u5230msg\u4e2d`msg.domin`\u3002\n\n\u5f53\u4f60\u4f7f\u7528\u7684\u662fPOST\u8bf7\u6c42\u65f6\uff0c\u53c2\u6570\u5e94\u8be5\u8fd9\u6837\u8bbe\u7f6e\n\n```\nmsg.method = 'POST'\nmsg.url = 'https:\/\/fizzz.blog.csdn.net\/?name=fizz&age=18'\nmsg.payload = {}\nmsg.payload.name = 'fizz'\nmsg.payload.key = 'fizz-key'\n\n```\n\n## \u8868\u5355\u6570\u636e\uff0c\u6587\u4ef6\u4e0a\u4f20\n\n\u5982\u679c\u8bf7\u6570\u636e\u4e3a\u8868\u5355\u6570\u636e\uff0c\u5e94\u5c06msg.headers[\u201ccontent-type\u201d]\u8bbe\u7f6e\u4e3a`application\/x-www-form-urlencoded`\u3002\n\n\u5bf9\u4e8e\u4e0a\u4f20\u6587\u4ef6\u7684\u573a\u666f\uff0c\u9700\u8981\u7279\u6b8a\u8bbe\u7f6e\u4e00\u4e0bhttp request\u8282\u70b9\n\n\u8981\u6267\u884c\u6587\u4ef6\u4e0a\u4f20\uff0c\u5e94\u5c06msg.headers[\u201ccontent-type\u201d]\u8bbe\u7f6e\u4e3a`multipart\/form-data`\u548c`msg.payload`\u4f20\u9012\u7ed9\u8282\u70b9\u7684\u5fc5\u987b\u662f\u5177\u6709\u4ee5\u4e0b\u7ed3\u6784\u7684\u5bf9\u8c61\uff1a\n\n```\n{\n    \"KEY\": {\n        \"value\": FILE_CONTENTS,\n        \"options\": {\n            \"filename\": \"FILENAME\"\n        }\n    }\n}\n\n```\n\nKEY,FILE_CONTENTS\u548cFILENAME\u7684\u503c\u5e94\u8bbe\u7f6e\u4e3a\u9002\u5f53\u7684\u503c\u3002\n\n---\n*modbus.cn*\n"