Javascript Promises and the map function

Question

我正在尝试遍历数组并在服务器端发送值。问题是服务器端每次都返回相同的结果。

let sms = {
    division: "",
};
Promise.all(['division_one','division_two','division_three','division_four'].map(function(division) {
    sms.division = division;
    console.log(sms);
    axios.post('http://localhost:3000/inbound', {
        sms
    })
        .then(function (response) {
            return response;
        });

})).then(function(results) {
})

客户端结果：

{ division: 'division_one' }
{ division: 'division_two' }
{ division: 'division_three' }
{ division: 'division_four' }

服务器端结果：

{ sms: { division: '**division_four**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"
{ sms: { division: '**division_four**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"
{ sms: { division: '**division_four**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"
{ sms: { division: '**division_four**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"

预期成果

服务器端应显示所有分区：

{ sms: { division: '**division_one**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"
{ sms: { division: '**division_two**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"
{ sms: { division: '**division_three**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"
{ sms: { division: '**division_four**' } }
::ffff:127.0.0.1 - - [29/Jan/2019:13:24:02 +0000] "POST /inbound HTTP/1.1" 200 36 "-" "axios/0.18.0"

Answer 1

变量sms是一个对象，您正在处理map函数中的引用。此外，还需要返回呼叫后Promise。

    Promise
    .all([
          'division_one',
          'division_two',
          'division_three',
          'division_four'
         ].map(function(division) {
           return axios.post('http://localhost:3000/inbound', {
              division: division,
           }
        );
    }))
    .then(function(results) {
    })

Answer 2

尝试在承诺中定义短信

Promise.all(['division_one','division_two','division_three','division_four'].map(function(division) {
let sms = {};
sms.division = division;
console.log(sms);
axios.post('http://localhost:3000/inbound', {
    sms
})
    .then(function (response) {
        return response;
    });
})).then(function(results) {
})