http.service.ts

import {LoadingController, AlertController, ToastController} from 'ionic-angular';
import {Injectable} from '@angular/core';
import {Http, Headers} from '@angular/http';
import {Observable} from "rxjs";

@Injectable()
export class AppGlobal {
    //缓存key的配置
    static cache: any = {
        slides: "_dress_slides",
        categories: "_dress_categories",
        products: "_dress_products"
    };

    //接口基地址
    // static domain = "http://192.168.2.106:8080";     //正式环境
    static domain = "https://bjgdjy.shjcdj.cn";   //政务云
    // static domain = "http://47.103.33.196:8080";   //阿里云正式地址
    // static domain = "http://47.103.35.216:8080";   //阿里云测试地址
    // static domain = "http://218.78.19.169:8081";   //天翼云地址
    // static domain = "http://218.78.19.169:8082/";   //天翼测试云地址
    // static domain = "";   //本地环境

    //图片地址
    static picture = AppGlobal.domain + "/wisdomgroup/manager/getIcon/";

    //通知公告图片参数
    static pictureNotice = AppGlobal.domain;

    //默认版本
    // static defaultVersion = "4.7.0";  //dev
    static defaultVersion;  //prod

    //接口地址
    static API: any = {
        getCategories: '/api/ionic3/getCategories',
        getLogin: '/app/loginpost',
        getDetails: '/api/ionic3/details'
    };

    static pageCount = 10;
}

@Injectable()
export class AppService {
    constructor(public http: Http,
                public loadingCtrl: LoadingController,
                private alertCtrl: AlertController,
                private toastCtrl: ToastController,) {
    }

    // 对参数进行编码
    encode(params, flag) {
        var str = '';
        if (params) {
            if (flag == 'get') { //get   /a/b
                for (var key in params) {
                    if (params.hasOwnProperty(key)) {
                        var value = params[key];
                        str += value + '/';
                    }
                }
                str = '/' + str.substring(0, str.length - 1);
            }
            if (flag == 'post') { //post  a=b&c=d
                for (let key in params) {
                    if (params.hasOwnProperty(key)) {
                        let value = params[key];
                        str += key + '=' + value + '&';
                    }
                }
                str = str.substring(0, str.length - 1);
            }
        }
        return str;
    }

    //get请求
    ObserverHttpGet(url, params): Observable<any> {
        return this.http.get(AppGlobal.domain + url + this.encode(params, "get"))    //app
    }


    //get请求
    ObserverHttpGetData(url, params): Observable<any> {
        return this.http.get(AppGlobal.domain + url, params)   //本地
    }

    //get请求
    ObserverHttpGetAdd(url, params): Observable<any> {
        return this.http.get(AppGlobal.domain + url + params)    //app
    }

    //get请求带？的
    ObserverHttpGetOption(url, params): Observable<any> {
        return this.http.get(AppGlobal.domain + url, {params: params});    //app
    }


    //get请求带pararms ,body 的
    ObserverHttpGetAddBody(url, params, body): Observable<any> {
        return this.http.post(AppGlobal.domain + url + params, null, {      //本地
            params: body,
            headers: new Headers({
                // "Accept": "application/json",
                "Content-Type": "application/json"
                // 'Content-Type':'application/x-www-form-urlencoded,charset=UTF-8'
            })
        })
    }


    //delete
    ObserverHttpDetelete(url, params): Observable<any> {
        return this.http.delete(AppGlobal.domain + url + this.encode(params, "get"))    //app
    }

    //delete
    ObserverHttpDeteleteOption(url, params): Observable<any> {
        return this.http.delete(AppGlobal.domain + url + params)    //app
    }

    //delete
    ObserverHttpDeteleteData(url, params, data): Observable<any> {
        return this.http.delete(AppGlobal.domain + url + params, {    //app
            params: this.encode(data, 'post'),
            headers: new Headers({
                "Content-Type": "application/json"
            })
        })   //本地
    }

    ObserverHttpPostData(url, params) {
        return this.http.post(AppGlobal.domain + url, params, {      //app
            headers: new Headers({
                "Content-Type": "application/json"
            })
        })
    }

    ObserverHttpPostAdd(url, params) {
        return this.http.post(AppGlobal.domain + url + params, {      //app
            headers: new Headers({
                "Content-Type": "application/json"
            })
        })
    }

    ObserverHttpPostOption(url, data) {
        return this.http.post(AppGlobal.domain + url, null, {      //app
            params: data,
            headers: new Headers({
                'Content-Type': 'application/x-www-form-urlencoded,charset=UTF-8'
            })
        });

    }

    //post请求
    ObserverHttpForm(url, params, body) {
        return this.http.post(AppGlobal.domain + url + params, null, {
            params: body,
            headers: new Headers({
                // "Accept": "application/json",
                // "Content-Type": "application/json"
                'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
            })
        })

    }

    //post请求
    ObserverHttpPost(url, params) {
        return this.http.post(AppGlobal.domain + url, null, {      //app
            params: this.encode(params, 'post'),
            headers: new Headers({
                'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
            })
        })
    }

    //post请求
    ObserverHttpNoForm(url, params) {
        return this.http.post(AppGlobal.domain + url, null, {      //app
            params: params,
            headers: new Headers({
                'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'
            })
        })

    }

    //put请求
    ObserverHttpPut(url, params, data) {
        return this.http.put(AppGlobal.domain + url + params, data, {      //app
            headers: new Headers({
                "Content-Type": "application/json"
            })
        })
    }

    private handleError(error: Response | any) {
        let msg = '';
        if (error.status == 400) {
            msg = '请求无效(code：404)';
            console.log('请检查参数类型是否匹配');
        }
        if (error.status == 404) {
            msg = '请求资源不存在(code：404)';
            console.error(msg + '，请检查路径是否正确');
        }
        if (error.status == 500) {
            msg = '服务器发生错误(code：500)';
            console.error(msg + '，请检查路径是否正确');
        }
        console.log(error);
        if (msg != '') {
            this.toast(msg);
        }
    }

    toast(message, callback?) {
        let toast = this.toastCtrl.create({
            message: message,
            duration: 2000,
            dismissOnPageChange: true,
        });
        toast.present();
        if (callback) {
            callback();
        }
    }

    //position:top, bottom and middle
    popToastView(message: string, position: string, duration: number) {
        this.toastCtrl.create({
            message: message,
            position: position,
            duration: duration,
        }).present();
    }

    /**
     *
     * @param message
     * @param callback
     */
    alert(message, callback?) {
        if (callback) {
            let alert = this.alertCtrl.create({
                title: '提示',
                message: message,
                buttons: ['取消', {
                    text: "确定",
                    handler: data => {
                        callback();
                    }
                }]
            });
            alert.present();
        } else {
            let alert = this.alertCtrl.create({
                title: '提示',
                message: message,
                buttons: ["确定"]
            });
            alert.present();
        }
    }
}