我正在尝试开发一个简单的应用程序以在Ionic和Ionic上工作。
该应用程序包含一个简单的按钮，用于启动蓝牙并使用功能 startScanning（）向我的服务器发送发布请求。
首先，我认为这是服务器端的问题，因此我尝试通过POSTMAN软件进行POST。
结果是完美的，响应是JSON。
所以我认为这与我的打字稿代码有关，您能帮帮我吗？
我的代码：
import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { BLE } from '@ionic-native/ble';
import { HTTP } from '@ionic-native/http';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/toPromise';
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
static readonly SERVER_ADDRESS = 'https://www.example.com';
lock: any;
randomFound:boolean;
readChar:any;
notifyChar:any;
authenticationState: any;
writeChar:any;
constructor(public navCtrl: NavController, private ble: BLE, private http: HTTP) {
}
startScanning(){
this.authenticationState = 0;
this.ble.startScan([]).subscribe( device => {
console.log(device.name);
let patt = /\d\d-\d\d-\d\d-\d\d/;
if( patt.test(device.name)){
console.log("Trying to connect..");
this.ble.connect(device.id).subscribe(peripheralData => {
this.randomFound = false;
console.log("Connected");
for(let char of peripheralData.characteristics){
console.log("CHAR : " + char.characteristic);
//this.characteristics.push(char);
if(char.characteristic.indexOf("6E400005") != -1){
console.log("Read char found");
this.readChar = char;
}
if(char.characteristic.indexOf("6E400003") != -1){
console.log("Notify char found");
this.notifyChar = char;
this.ble.startNotification(device.id,this.notifyChar.service, this.notifyChar.characteristic).subscribe(value =>{
console.log("Value changed ");
let data1 = new Uint8Array(value);
if(this.authenticationState == 0){
if(this.randomFound == false){
this.randomFound = true;
let random = this.buf2hex(data1);
console.log("Random " + random);
//var postData = JSON.stringify({lock:device.name,random:this.buf2hex(data)});
var postData = {lock:device.name,random:this.buf2hex(data1)};
let headers:any = {
'Content-Type': 'application/json'
};
console.log("Post Data " + postData);
this.http.setDataSerializer('json');
this.http.post(HomePage.SERVER_ADDRESS+'/external/RequestAccessService',postData, headers).then(
data => {
//let test = data.data.json() as Object;
//console.log("Response " + test);
console.log("Response Json " + data.data.json);
let key:ArrayBuffer = new ArrayBuffer(20);
let keyView:Uint8Array = new Uint8Array(key);
//let key:Array<any> = this.parseHexString(data.data);
let buf:any = this.parseHexString(data.data);
//let buf:any = this.parseHexString(data._body);
console.log("BUF " + buf);
for(let i=0;i< 20;i++){
keyView[i] = buf[i];
}
console.log("KEY " +keyView);
this.ble.writeWithoutResponse(device.id,this.writeChar.service,this.writeChar.characteristic,key).then(()=>{
console.log("Request to open lock sent...");
this.authenticationState = 1;
this.ble.read(device.id,this.readChar.service,this.readChar.characteristic).then(
(data) =>{
console.log(this.buf2hex(data));
}, (err) =>{
console.log("Error Reading" + err);
}
);
}, (err) => {
console.log("Error " + err);
});
}).catch(error =>{
console.log(error.status);
console.log(error.error);
console.log(error.headers);
})
}
}else{
console.log("Waiting for status");
console.log(this.buf2hex(data1));
if(data1[0] == 0x01){
console.log('the bike is unlocked, enjoy the ride!');
}else{
console.log('Not authorized to use the bike!');
}
this.ble.stopNotification(device.id,this.notifyChar.service,this.notifyChar.characteristic).then( ()=>{
console.log("Notification stopped");
});
}
} );
}
if(char.characteristic.indexOf("6E400002") != -1){
console.log("Write char found");
this.writeChar = char;
}
}
})
}
});
setTimeout( () => {
this.ble.stopScan().then( () =>{
console.log("scanning has stopped");
});
},3000);
}
buf2hex(buffer){
return Array.prototype.map.call(new Uint8Array(buffer), x => ('00' + x.toString(16)).slice(-2)).join('');
}
parseHexString(str) {
var lower = str.toLowerCase();
var result = [];
while (lower.length >= 2) {
var t = lower.substring(0, 2);
console.log("STR " + t + " INT " + parseInt(t,16));
result.push(parseInt(lower.substring(0, 2), 16));
lower = lower.substring(2, lower.length);
}
return result;
}
}
离子框架：3.9.2
Ionic应用程序脚本：3.1.11
角核：5.2.11
Angular编译器CLI：5.2.11
节点：8.11.1
操作系统平台：Windows 10
导航器平台：iPhone
谢谢您的帮助。
答案 0 :(得分：0)
select lotid, count(*) as stephandles
from lotflow_d d
where eqptype not in ('CUDDFINP','CUBDFINP','BDFINP','DDFINP','CUDFSEM', 'DFSEM',
'SORT','CUSORT','CUNPURGE','NPURGE','EDFINP','CUEDFINP')
and not exists
(
select *
from lotmove_r r
where r.lotid = d.lotid
and r.stephandle >= d.stephandle
and r.stephandle not like '%8888%'
and r.stephandle like '%.%.%'
and r.qtap_group in ('8685','8686','8687','8688','8689','8533',
'8532','2534','2533','8684','8690')
and r.datadate > sysdate-3
and r.priority <= 5
and r.subplanid not like '%RWK%'
)
group by lotid
order by lotid;
您只需要对您的响应字符串做JSON.parse，就可以将其作为post方法调用的响应，就可以像JSON格式一样希望对您有所帮助。