javaScript----Http对象封装

httpPost(sURL, sParams)——使用该方法可以提交Post请求，一般情况下和addPostParam(sParams, sParamName, sParamValue)一起使用。如下举例：

例：

var sParams = "";

sParams = addPostParam(sParams, "name", "zhangyin");

sParams = addPostParam(sParams, "age", "26");

var sData = httpPost("http://www.gootrip.com/search.jsp", sParams);

addPostParam(sParams, sParamName, sParamValue)——增加Post请求时的参数。

addURLParam(sURL, sParamName, sParamValue) ——增加URL地址参数。

httpGet(sURL) ——使用该方法可以提交Get请求，一般情况下和addGetParam(sURL, sParamName, sParamValue)一起使用。

例：

var sURL = "";

sURL = addURLParam("http://www.gootrip.com/search.jsp", "name", "zhangyin");

var sData = httpGet(sURL);

Http.get(sURL, fnCallback) ——通过判断XMLHttpRequest的类型，以及判断ActiveXObject是否有效来确定http请求及其传输方式（一般用作Ajax技术的异步传输过程）。

例：

function getServerInfo() {//Post方法

var sURL = "http://www.gootrip.com/search.jsp ";

sURL = addGetParam(sURL, "name", "zhangyin");

sURL = addPostParam(sURL, "age", "26");

Http.get(sURL, function (sData) {// sData为Http.get返回数据

alert("Data from server: " + sData);

});

}

Http.post(sURL, sParams, fnCallback) ——通过判断XMLHttpRequest的类型，以及判断ActiveXObject是否有效来确定http请求及其传输方式（一般用作Ajax技术的异步传输过程）。

例：

function getServerInfo() {//Post方法

var sURL = "http://localhost/reflectpost.php";

var sParams = "";

sParams = addPostParam(sParams, "name", "Nicholas");

sParams = addPostParam(sParams, "book", "Professional JavaScript");

Http.post(sURL, sParams, function (sData) {

alert("Data from server: " + sData);

});

}

在http.js中的方法主要是对iClass.js中的ajax方法做的补充。

Code

var bXmlHttpSupport = (typeof XMLHttpRequest == "object" || window.ActiveXObject);

function httpPost(sURL, sParams) {

    var oURL = new java.net.URL(sURL);
    var oConnection = oURL.openConnection();

    oConnection.setDoInput(true);
    oConnection.setDoOutput(true);
    oConnection.setUseCaches(false);
    oConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

    var oOutput = new java.io.DataOutputStream(oConnection.getOutputStream());
    oOutput.writeBytes(sParams);
    oOutput.flush();
    oOutput.close();

    var sLine = "", sResponseText = "";

    var oInput = new java.io.DataInputStream(oConnection.getInputStream());
    sLine = oInput.readLine();

    while (sLine != null){
        sResponseText += sLine + "\n";
        sLine = oInput.readLine();
    }

    oInput.close();

    return sResponseText;
}

function addPostParam(sParams, sParamName, sParamValue) {
    if (sParams.length > 0) {
        sParams += "&";
    }
    return sParams + encodeURIComponent(sParamName) + "="
                   + encodeURIComponent(sParamValue);
}

function addURLParam(sURL, sParamName, sParamValue) {
    sURL += (sURL.indexOf("?") == -1 ? "?" : "&");
    sURL += encodeURIComponent(sParamName) + "=" + encodeURIComponent(sParamValue);
    return sURL;
}

function httpGet(sURL) {
    var sResponseText = "";
    var oURL = new java.net.URL(sURL);
    var oStream = oURL.openStream();
    var oReader = new java.io.BufferedReader(new java.io.InputStreamReader(oStream));

    var sLine = oReader.readLine();
    while (sLine != null) {
        sResponseText += sLine + "\n";
        sLine = oReader.readLine();
    }

    oReader.close();
    return sResponseText;
}

if (typeof XMLHttpRequest == "undefined" && window.ActiveXObject) {

    function XMLHttpRequest() {

        var arrSignatures = ["MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0",
                             "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP",
                             "Microsoft.XMLHTTP"];

        for (var i=0; i < arrSignatures.length; i++) {
            try {

                var oRequest = new ActiveXObject(arrSignatures[i]);

                return oRequest;

            } catch (oError) {
                //ignore
            }
        }

        throw new Error("MSXML is not installed on your system.");
    }
}

var Http = new Object;

Http.get = function (sURL, fnCallback) {

    if (bXmlHttpSupport) {

        var oRequest = new XMLHttpRequest();
        oRequest.open("get", sURL, true);
        oRequest.onreadystatechange = function () {
            if (oRequest.readyState == 4) {
                fnCallback(oRequest.responseText);
            }
        }
        oRequest.send(null);

    } else if (navigator.javaEnabled() && typeof java != "undefined"
            && typeof java.net != "undefined") {

        setTimeout(function () {
            fnCallback(httpGet(sURL));
        }, 10);
    } else {
        alert("Your browser doesn't support HTTP requests.");
    }

};

Http.post = function (sURL, sParams, fnCallback) {

    if (bXmlHttpSupport) {

        var oRequest = new XMLHttpRequest();
        oRequest.open("post", sURL, true);
        oRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        oRequest.onreadystatechange = function () {
            if (oRequest.readyState == 4) {
                fnCallback(oRequest.responseText);
            }
        }
        oRequest.send(sParams);

    } else if (navigator.javaEnabled() && typeof java != "undefined"
            && typeof java.net != "undefined") {

        setTimeout(function () {
            fnCallback(httpPost(sURL, sParams));
        }, 10);
    } else {
        alert("Your browser doesn't support HTTP requests.");
    }

};

转载于:https://www.cnblogs.com/hubcarl/archive/2009/04/03/1428919.html

javaScript----Http对象封装

猜你喜欢