上的
我使用nodejs/javaScript成功地称为SOAP WebService方法的序列,但是使用回调...现在看起来像这样:
soap.createClient(wsdlUrl, function (err, soapClient) {
console.log("soap.createClient();");
if (err) {
console.log("error", err);
}
soapClient.method1(soaprequest1, function (err, result, raw, headers) {
if (err) {
console.log("Security_Authenticate error", err);
}
soapClient.method2(soaprequest2, function (err, result, raw, headers) {
if (err) {
console.log("Air_MultiAvailability error", err);
}
//etc...
});
});
});
我正在尝试使用Promise或Async获得更清洁的东西,类似于此(基于此处的文档中的示例https://www.npmjs.com/package/soap/soap(:
var soap = require('soap');
soap.createClientAsync(wsdlURL)
.then((client) => {
return client.method1(soaprequest1);
})
.then((response) => {
return client.method2(soaprequest2);
});//... etc
我的问题是,在后一个示例中,肥皂客户端在第一个调用后不再可访问,并且通常返回"未定义"错误...
是否有一种"干净"的方式可以通过这种链接在随后的呼叫中使用/可访问?
使用async/await
语法。
const soap = require('soap');
(async () => {
const client = await soap.createClientAsync(wsdlURL);
cosnt response = await client.method1Async(soaprequest1);
await method2(soaprequest2);
})();
请注意createClient
和method1
Async
为了保持承诺链,您可以将肥皂的实例分配给外部范围中的变量:
let client = null;
soap.createClientAsync(wsdlURL)
.then((instance) => {
client = instance
})
.then(() => {
return client.method1(soaprequest2);
})
.then((response) => {
return client.method2(soaprequest2);
});
解决客户端后,将是嵌套链方法调用:
soap.createClientAsync(wsdlURL)
.then((client) => {
Promise.resolve()
.then(() => {
return client.method1(soaprequest2);
})
.then((response) => {
return client.method2(soaprequest2);
});
})