我在做一件事 http 我的请求 angular2+ 数据库中存在的代码 node.js 文件。这个 ajax 来自的呼叫 angular2+ 点击 controller.js 文件，然后重定向到 service.js 与数据库有连接的文件：

angular.ts ==> controller.js ==> service.js

从数据库 service.js 文件将输出给 controller.js 然后回答问题 ajax 呼叫 angular.ts 文件：

service.js ==> controller.js ==> angular.ts

但是，我得到了一个错误：

POST http://localhost:8096/dashboard/abcEntireSuccess1/ 404 (Not Found)

更新后无法获取/dashboard/experianentResusccess1/
还有一个问题-

UnauthorizedError: No authorization token was found

还有一个问题-
从service.js中的hit返回后，其中包含我想要==>到=>controller.js的数据，这里获取的数据是未定义的。如下所示-
nodejs上的输出-
输出-
服务.js

closed connection
  yessss [ RowDataPacket { ....

控制器.js

we are coming back to controller undefined

  some error occured of abcEntireSuccess1

我的全部代码：已更新
.component.ts公司

viewAbcEntireSuccess1() {

var url = config.url;
var port = config.port;

this.http.post("http://" + url + ":" + port + "/dashboard  
  /abcEntireSuccess1/", this.emptyObj
  , { headers: new Headers({ 'Authorization': 'Bearer ' + 
    localStorage.getItem('Token') }) })
  .map(resultConnection => this.resultConnection = 
    resultConnection.json(), )
   .subscribe((res: Response) => {

     this.records = res;

     this.resultConnectionlength = this.resultConnection.length;

   });

 }

.controller.js公司

router.post('/experianEntireSuccess1',experianEntireSuccess1);
  module.exports = router;

    function abcEntireSuccess1(req, res) {

    dashboardService.abcEntireSuccess1(req.body)
      .then(function (result) {
        console.log("we are coming back to controller",result)
        if (result.length > 0) {
            console.log("we get data in node of abcEntireSuccess1 :: 
         " + Object.values(result));
            console.log(result.length + " record found  ");
            res.send(result);
           } 
         else {
            result=[];
            res.send(result);
         }
     })
     .catch(function (err) {
        res.status(400).send(err);
        console.log("some error occured of abcEntireSuccess1");
      });
      }

.service.js公司

async function abcEntireSuccess1() {
  console.log("function called")
   const db = new Database();
   await db.query(`select * from TRANSACTION_PAYLOAD where INTERFACE_NAME
    = 'Abc' AND (STATUS ='SUCCESS_RESPONSE')`
    ).then(rows => {

    console.log("closed connection");

    console.log("yessss",rows)
    return rows;

     });
    };

   class Database {
   constructor() {

      this.connection = mysql.createConnection({
        host: "127.0.0.1",
        user: "abc",
        password: "abc",
        database: "DB"
      });

    }

  query(sql, args) {
    console.log("sql is", sql)
    return new Promise((resolve, reject) => {
        this.connection.query(sql, (err, rows) => {
            console.log("connection function called")
            if (err) {
                console.log("error is", err)
                return reject(err);
            }

            console.log("rows are",rows);
            resolve(rows);
        });
       });
     }
   close() {

     console.log("calling connection close")
     return new Promise((resolve, reject) => {
        console.log("called connection close")
        this.connection.end(err => {
            if (err){
                return reject(err);
            }

            resolve();
        });
     });
     }
     }