node-red-contrib-xrpl 是一个 npm 包，它为 Node-RED 用户提供了一个方便的方式来与 XRPL（XRP Ledger）交互。XRPL 是一种去中心化的分布式账本技术，它被用于支付、交易和信任网络。
在这篇文章中，我们将详细探讨如何安装、配置和使用 node-red-contrib-xrpl，同时提供一些示例代码和指导意义。
安装
在安装 node-red-contrib-xrpl 之前，您需要先安装 Node.js 和 Node-RED。在安装了这些软件之后，您可以在 Node-RED 中使用以下命令安装 node-red-contrib-xrpl：
npm install node-red-contrib-xrpl
配置
在使用 node-red-contrib-xrpl 之前，您需要在 Node-RED 中配置它。首先，您需要在 Node-RED 的 settings.js 文件中添加以下内容：
functionGlobalContext: {
xrpl: require('xrpl'),
},接下来，您需要在 Node-RED 中添加“xrpl”节点。您可以在“输入”面板中找到它。将该节点拖动到工作区域中，并为其指定必要的配置。
例如，如果您要查询 XRP 地址的余额，您需要在配置选项中指定地址。同样，如果您要向某个地址发送 XRP，则需要在配置选项中指定发送地址和接收地址。
使用
一旦您在 Node-RED 中配置了 node-red-contrib-xrpl，您就可以开始使用它了。以下是一些示例用例：
查询 XRP 地址余额
首先，您需要使用“xrpl”节点配置选项指定要查询的 XRP 地址。然后，您可以使用“inject”节点发送一个空消息来触发查询。最后，您可以使用“debug”节点来查看查询结果。
以下是一个示例流程：
[{"id":"a5d5a5b5.a8aab","type":"xrpl","z":"851e2d42.8e089","name":"","topic":"","address":"rnkbCdPYkW8rb3Neg72dBNnqDYwJoHUn1W","interval":0,"language":"msg.payload","languageType":"str","onNotFound":true,"daterangeoffset":0,"datewindow":"1y","dateemit":"2015-01-01T00:00:00.000Z","holdPeriod":0,"unsecured":false,"yCount":0,"xCount":0,"xDesc":"XRP","xScale":"XlsA0001","newDataset":true,"plotType":"line","labelType":"fixed","colorScheme":"schemeAccent","service":"xrplstats","debug":false,"context":false,"autorescale":false,"ymin":"~0","ymax":"~0","labels":{"currency":"XRP","issuer":""},"ddex":"m","xTickShow":true,"showVolume":false,"unit":"XRP","timeCompression":"day","resolution":1,"timeCompressionUnit":"Month","provider":"cryptocompare","autoRefresh":false,"customChart":false,"split":false,"splitXValue":null,"splitYValue":null,"splitYPos":null,"splitColumns":null,"splitShowOnlyChanges":true,"nullZeros":true,"showPoints":false,"showLines":true,"fillLines":false,"yCountMin":5,"xCountMin":5,"xCountMax":5,"xCountFixed":5,"countOffset":0,"lastCount":5,"lastOffset":0,"exchangeCurrency":"USD","diff":false,"providerUrl":"https://min-api.cryptocompare.com","customUrl":"","currencyOverride":false,"currencyOverrideTicker":"","providerHistoryUrl":"","overwriteInterval":false,"intervalOffset":1,"fundingReference":false,"sum":false,"sumColumn":"","tolerance":0.1,"plotDateX":false,"outputs":1,"x":290,"y":2960,"wires":[["bb5c5c5d.9e9bc"]]},{"id":"f72e13b5.8e0368","type":"inject","z":"851e2d42.8e089","name":"","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":150,"y":2960,"wires":[["a5d5a5b5.a8aab"]]},{"id":"bb5c5c5d.9e9bc","type":"debug","z":"851e2d42.8e089","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","x":450,"y":2960,"wires":[]}]发送 XRP
首先，您需要在“xrpl”节点配置选项中指定发送地址和接收地址。然后，您可以使用“inject”节点发送要发送的 XRP 数量和付款备注等信息。最后，您可以在“debug”节点中查看发送结果。
以下是一个示例流程：
[{"id":"118a4b10.317adf","type":"xrpl","z":"af9261e6.d95038","name":"","topic":"","address":"rnkbCdPYkW8rb3Neg72dBNnqDYwJoHUn1W","interval":0,"language":"msg.payload","languageType":"str","onNotFound":true,"daterangeoffset":0,"datewindow":"1y","dateemit":"2015-01-01T00:00:00.000Z","holdPeriod":0,"unsecured":false,"yCount":0,"xCount":0,"xDesc":"XRP","xScale":"XlsA0001","newDataset":true,"plotType":"line","labelType":"fixed","colorScheme":"schemeAccent","service":"xrplstats","debug":false,"context":false,"autorescale":false,"ymin":"~0","ymax":"~0","labels":{"currency":"XRP","issuer":""},"ddex":"m","xTickShow":true,"showVolume":false,"unit":"XRP","timeCompression":"day","resolution":1,"timeCompressionUnit":"Month","provider":"cryptocompare","autoRefresh":false,"customChart":false,"split":false,"splitXValue":null,"splitYValue":null,"splitYPos":null,"splitColumns":null,"splitShowOnlyChanges":true,"nullZeros":true,"showPoints":false,"showLines":true,"fillLines":false,"yCountMin":5,"xCountMin":5,"xCountMax":5,"xCountFixed":5,"countOffset":0,"lastCount":5,"lastOffset":0,"exchangeCurrency":"USD","diff":false,"providerUrl":"https://min-api.cryptocompare.com","customUrl":"","currencyOverride":false,"currencyOverrideTicker":"","providerHistoryUrl":"","overwriteInterval":false,"intervalOffset":1,"fundingReference":false,"sum":false,"sumColumn":"","tolerance":0.1,"plotDateX":false,"outputs":1,"x":290,"y":3160,"wires":[["5f8f0b14.b5ed0c"]]},{"id":"5f8f0b14.b5ed0c","type":"debug","z":"af9261e6.d95038","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":460,"y":3160,"wires":[]},{"id":"b4c4b4dc.07f908","type":"inject","z":"af9261e6.d95038","name":"","props":[{"p":"payload"},{"p":"destinationTag","v":"12345","vt":"num"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"42","payloadType":"num","x":130,"y":3160,"wires":[["118a4b10.317adf"]]}]总结
在本文中，我们探讨了如何安装、配置和使用 node-red-contrib-xrpl。通过使用这个 npm 包，您可以方便地在 Node-RED 中与 XRPL 交互，从而构建出更加复杂的分布式应用程序。
我们的示例用例也可以帮助您更好地理解这个 npm 包的功能和用法。祝您在使用 node-red-contrib-xrpl 时取得成功！
来源：JavaScript中文网 ，转载请注明来源 本文地址：https://www.javascriptcn.com/post/600673e0fb81d47349e53d23