[CocosCreator]封装XMLHttpRequest短连接

import SysLog from "./SysLog";
import PublicUtil from "./PublicUtil";
import ServerConfig from "../common/ServerConfig";
import UserData from "../data/UserData";

class HttpUtil {
    private static instance: HttpUtil;

    private constructor() {
    }

    static getInstance(): HttpUtil {
        if (!HttpUtil.instance) {
            HttpUtil.instance = new HttpUtil();
        }
        return this.instance;
    }

    httpGets(url, callback, errorCallback?) {
        let xhr = new XMLHttpRequest();
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status < 400)) {
                let responseText = PublicUtil.unCode(xhr.responseText);//解密
                //let responseText = xhr.responseText;//SysLog("josn:"+responseText);
                if (xhr.status == 200) {
                    if (responseText) {
                        SysLog.debug("responseText:" + responseText);
                        let jsonObj = JSON.parse(responseText);
                        let detail = jsonObj["detail"];
                        if (detail) {
                            callback(detail);
                        }
                    }
                } else {
                    SysLog.debug("连接服务器失败....");
                }
            }
        };
        xhr.onerror = function () {
            if (typeof errorCallback == 'function') {
                errorCallback();
            }
        };
        xhr.open("GET", url, true);
        if (cc.sys.isNative) {
            xhr.setRequestHeader("Accept-Encoding", "gzip,deflate");
        }

        // note: In Internet Explorer, the timeout property may be set only after calling the open()
        // method and before calling the send() method.
        xhr.timeout = 5000;// 5 seconds for timeout

        xhr.send();
    }

    
    gameHttpPost(url: string, params: string | any, callback, errorCallback?) {
        //追加session验证
        if (typeof params === 'string') {
            let sess = UserData.Map_UserInfo_ALL.get("sess");
            params = params.replace("}", ',"tokenId":"' + sess + '"}');
        }

        let xhr = new XMLHttpRequest();
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status < 400)) {
                let responseText = PublicUtil.unCode(xhr.responseText);//解密
                //let responseText = xhr.responseText;//SysLog("josn:"+responseText);
                if (xhr.status == 200) {
                    if (responseText) {
                        //SysLog.debug("responseText:" + responseText);
                        let jsonObj = JSON.parse(responseText);
                        let detail = jsonObj["detail"];
                        if (detail) {
                            callback(detail);
                        }
                    }
                } else {
                    if (typeof errorCallback == 'function') {
                        errorCallback();
                    }
                }
            }
        };
        xhr.onerror = function () {
            if (typeof errorCallback == 'function') {
                errorCallback();
            }
        };
        xhr.open("POST", ServerConfig.game_mainPoint + url);
        xhr.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
        xhr.timeout = 5000;// 5 seconds for timeout
        xhr.send(PublicUtil.enCode(params));//加密
        //xhr.send(params);
    }

    
}

export default HttpUtil;

使用方式:(简单的单例模式调用)

HttpUtil.getInstance().gameHttpPost('地址', JSON.stringify(jsonObj), (datas:any) => {
   //后端返回的datas                    
});

标签：responseText,xhr,detail,封装,CocosCreator,let,XMLHttpRequest,HttpUtil,errorCallbac
来源： https://blog.csdn.net/qq183293/article/details/119490986