[英]How to make an HTTP POST request on node js
The following is the server: 以下是服务器:
const Bpmn = require('bpmn-engine');
const processXml = `
<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<process id="theProcess" isExecutable="true">
<startEvent id="start" />
<exclusiveGateway id="decision" />
<endEvent id="end1" />
<endEvent id="end2" />
<sequenceFlow id="flow1" sourceRef="start" targetRef="decision" />
<sequenceFlow id="flow2" sourceRef="decision" targetRef="end1">
<conditionExpression xsi:type="tFormalExpression"
language="JavaScript"><![CDATA[
this.variables.input <= 50
]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow3" sourceRef="decision" targetRef="end2">
<conditionExpression xsi:type="tFormalExpression"
language="JavaScript"><![CDATA[
this.variables.input > 50
]]></conditionExpression>
</sequenceFlow>
</process>
</definitions>`;
const engine = new Bpmn.Engine({
name: 'exclusive gateway example',
source: processXml
});
engine.once('end', (definition) => {
if (definition.getChildActivityById('end1').taken) throw new Error('<end1>
was not supposed to be taken, check your input');
console.log('TAKEN end2', definition.getChildActivityById('end2').taken);
});
function sendEvent(value){
engine.execute({
variables: {
input: value
}
}, (err, definition) => {
console.log('Bpmn definition definition started with id',
definition.getProcesses()[0].context.variables.input.value);
console.log('sent event' + value);
console.log(engine.getState())
});
}
i = 0;
//hello.js
module.exports = (req, res, next) => {
//res.header('X-Hello', 'World')
//console.log(req);
if(!i++){
sendEvent(52);
}
console.log(engine.getState())
next()
}
The server above has been created using that package adding middlewares https://www.npmjs.com/package/json-server The number 52 in the function "sendEvent" is an example. 上面的服务器是使用添加了中间件https://www.npmjs.com/package/json-server的软件包创建的。函数“ sendEvent”中的数字52是一个示例。 I have to take this value from an http post. 我必须从http帖子中获取此值。 How can I do that? 我怎样才能做到这一点?
Use the request library: 使用请求库:
var request = require('request');
request.post(
'http://www.example.com',
{ json: { key: 'value' } },
function (error, response, body) {
console.log(body)
}
);
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.