我对Node.js编码相当陌生,遇到了一个问题,即我无法获取可登录控制台的数组中的项,这些数组可以从发出URL请求的每个循环中进行处理。
这里的代码首先从请求中获取键列表,然后我使用for每个循环中的另一个请求将其转换为名称。
我需要将名称列表记录在一个数组中,上面写着“这里需要一个数组”,这是我当前的代码:
request('https://api2.ripaex.io/api/delegates/getNextForgers', function (error, response, body) {
if (!error && response.statusCode == 200) {
var jsonContent = JSON.parse(body);
var delegates = jsonContent.delegates;
for (i = 0; i < delegates.length; ++i) {
request(String('https://api2.ripaex.io/api/delegates/get?publicKey=' + delegates[i]), function (error, response, body) {
if (!error && response.statusCode == 200) {
var jsonContent2 = JSON.parse(body);
console.log(jsonContent2.delegate.username);
}
})
}
console.log('need an array here');
} else { console.log('Error: Could not retrieve the data') }
})
答案 0 :(得分:2)
我没有对此进行测试,但这是我在评论中所指的。
request('https://api2.ripaex.io/api/delegates/getNextForgers', function(error, response, body) {
if (!error && response.statusCode == 200) {
var jsonContent = JSON.parse(body);
var delegates = jsonContent.delegates;
var promises = [];
for (i = 0; i < delegates.length; ++i) {
promises.push(new Promise(function(resolve, reject) {
request(String('https://api2.ripaex.io/api/delegates/get?publicKey=' + delegates[i]), function(error, response, body) {
if (!error && response.statusCode == 200) {
var jsonContent2 = JSON.parse(body);
console.log(jsonContent2.delegate.username);
resolve(jsonContent2);
}else{
reject(error);
}
})
}
));
}
Promise.all(promises).then(function(resultsArray){
console.log('need an array here');
}).catch(function(err){
//Handle errors
});
} else {
console.log('Error: Could not retrieve the data')
}
});
但这是已经封装在Promise https://github.com/request/request-promise-native中的请求api
这是一个使用请求承诺api的未经测试的示例。
var rp = require('request-promise');
rp({
method: 'GET',
uri: 'https://api2.ripaex.io/api/delegates/getNextForgers',
json: true // Automatically stringifies the body to JSON
//resolveWithFullResponse: true //If you want the full response
}).then(function(jsonContent) {
var delegates = jsonContent.delegates,
promises = [];
for (i = 0; i < delegates.length; ++i) {
promises.push(rp({
url: String('https://api2.ripaex.io/api/delegates/get?publicKey=' + delegates[i]),
json: true
}).then(function(jsonContent2) {
console.log(jsonContent2.delegate.username);
return jsonContent2;
}));
}
return Promise.all(promises).then(function(resultsArray) {
console.log('need an array here');
});
}).catch(function(err){
console.log('Error: Could not retrieve the data')
});