积极答复者
关于context.response.write向前台传递多个值的问题
问题
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后台：前台：
string remoteip = GetCustomerIP(); if (remoteip == "127.0.0.1") remoteip = GetHostIP(); SqlDataReader sdr=DBManager.getSdr("select [mask],[gateway],[mac] from [ipAddress] where [ip]='" + remoteip + "'"); if (sdr.HasRows) { sdr.Read(); string mask = sdr[0].ToString(); string gateway = sdr[1].ToString(); string mac = sdr[2].ToString(); sdr.Close(); DBManager.closeCon(); } context.Response.Write(remoteip);//这样写只能传递一个值，请问如何传递多个值（mask、gateway、mac）。
function get_Ip() { createXMLHttpRequest(); xmlHttp.open("GET", "dl_Addip.ashx?get_Ip", true); xmlHttp.onreadystatechange = function () { if (xmlHttp.readyState == 4 && xmlHttp.status == 200) { document.getElementById("txt_Singleip").value = xmlHttp.responseText;
//除了上面的赋值之外，我还想给下面元素赋值：
document.getElementById("txt_mask").value=xmlHttp.responseText;
document.getElementById("txt_gateway").value=xmlHttp.responseText;
document.getElementById("txt_mac").value=xmlHttp.responseText;} } xmlHttp.send(null); }
答案
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办法有多个，最好使用JSON格式，容易解析。如果没有特殊字符也可以这样
context.Response.Write(remoteip+ "@" + mask + "@" + gateway + "@" + mac);
js端
var d = xmlHttp.responseText;
data = d.split("@")
document.getElementById("txt_Singleip").value = data[0]
document.getElementById("txt_mask").value = data[1]
document.getElementById("txt_gateway").value = data[2]
document.getElementById("txt_mac").value = data[3]
孟宪会- 已标记为答案 杜宏宇 2009年2月22日 14:02
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杜宏宇 说:
老实，如果用jason的话怎么做呢？
1，你需要将http://www.json.org/json2.js包含在你的代码中，
JSON 的相关知识http://www.json.org/
2，完整代码
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (Request.QueryString["get"] != null) { string remoteip = "127.0.0.1"; string mask = "maskmaskmask"; string gateway = "gatewaygatewaygateway"; string mac = "macmacmacmac"; string JSONString = "{\"remoteip\":\"" + remoteip + "\",\"mask\":\"" + mask + "\",\"gateway\":\"" + gateway + "\",\"mac\":\"" + mac + "\"}"; Response.ClearContent(); Response.Write(JSONString); Response.End(); } } </script> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title></title> <script type="text/javascript"> if (!this.JSON) { JSON = {}; } (function() { function f(n) { // Format integers to have at least two digits. return n < 10 ? '0' + n : n; } if (typeof Date.prototype.toJSON !== 'function') { Date.prototype.toJSON = function(key) { return this.getUTCFullYear() + '-' + f(this.getUTCMonth() + 1) + '-' + f(this.getUTCDate()) + 'T' + f(this.getUTCHours()) + ':' + f(this.getUTCMinutes()) + ':' + f(this.getUTCSeconds()) + 'Z'; }; String.prototype.toJSON = Number.prototype.toJSON = Boolean.prototype.toJSON = function(key) { return this.valueOf(); }; } var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, gap, indent, meta = { // table of character substitutions '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"': '\\"', '\\': '\\\\' }, rep; function quote(string) { escapable.lastIndex = 0; return escapable.test(string) ? '"' + string.replace(escapable, function(a) { var c = meta[a]; return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }) + '"' : '"' + string + '"'; } function str(key, holder) { // Produce a string from holder[key]. var i, // The loop counter. k, // The member key. v, // The member value. length, mind = gap, partial, value = holder[key]; // If the value has a toJSON method, call it to obtain a replacement value. if (value && typeof value === 'object' && typeof value.toJSON === 'function') { value = value.toJSON(key); } // If we were called with a replacer function, then call the replacer to // obtain a replacement value. if (typeof rep === 'function') { value = rep.call(holder, key, value); } // What happens next depends on the value's type. switch (typeof value) { case 'string': return quote(value); case 'number': // JSON numbers must be finite. Encode non-finite numbers as null. return isFinite(value) ? String(value) : 'null'; case 'boolean': case 'null': return String(value); // If the type is 'object', we might be dealing with an object or an array or // null. case 'object': // Due to a specification blunder in ECMAScript, typeof null is 'object', // so watch out for that case. if (!value) { return 'null'; } // Make an array to hold the partial results of stringifying this object value. gap += indent; partial = []; // Is the value an array? if (Object.prototype.toString.apply(value) === '[object Array]') { // The value is an array. Stringify every element. Use null as a placeholder // for non-JSON values. length = value.length; for (i = 0; i < length; i += 1) { partial[i] = str(i, value) || 'null'; } // Join all of the elements together, separated with commas, and wrap them in // brackets. v = partial.length === 0 ? '[]' : gap ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : '[' + partial.join(',') + ']'; gap = mind; return v; } // If the replacer is an array, use it to select the members to be stringified. if (rep && typeof rep === 'object') { length = rep.length; for (i = 0; i < length; i += 1) { k = rep[i]; if (typeof k === 'string') { v = str(k, value); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } else { // Otherwise, iterate through all of the keys in the object. for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = str(k, value); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } // Join all of the member texts together, separated with commas, // and wrap them in braces. v = partial.length === 0 ? '{}' : gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : '{' + partial.join(',') + '}'; gap = mind; return v; } } // If the JSON object does not yet have a stringify method, give it one. if (typeof JSON.stringify !== 'function') { JSON.stringify = function(value, replacer, space) { var i; gap = ''; indent = ''; // If the space parameter is a number, make an indent string containing that // many spaces. if (typeof space === 'number') { for (i = 0; i < space; i += 1) { indent += ' '; } // If the space parameter is a string, it will be used as the indent string. } else if (typeof space === 'string') { indent = space; } // If there is a replacer, it must be a function or an array. // Otherwise, throw an error. rep = replacer; if (replacer && typeof replacer !== 'function' && (typeof replacer !== 'object' || typeof replacer.length !== 'number')) { throw new Error('JSON.stringify'); } // Make a fake root object containing our value under the key of ''. // Return the result of stringifying the value. return str('', { '': value }); }; } // If the JSON object does not yet have a parse method, give it one. if (typeof JSON.parse !== 'function') { JSON.parse = function(text, reviver) { // The parse method takes a text and an optional reviver function, and returns // a JavaScript value if the text is a valid JSON text. var j; function walk(holder, key) { // The walk method is used to recursively walk the resulting structure so // that modifications can be made. var k, v, value = holder[key]; if (value && typeof value === 'object') { for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = walk(value, k); if (v !== undefined) { value[k] = v; } else { delete value[k]; } } } } return reviver.call(holder, key, value); } cx.lastIndex = 0; if (cx.test(text)) { text = text.replace(cx, function(a) { return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }); } if (/^[\],:{}\s]*$/. test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@'). replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'). replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { j = eval('(' + text + ')'); return typeof reviver === 'function' ? walk({ '': j }, '') : j; } // If the text is not JSON parseable, then a SyntaxError is thrown. throw new SyntaxError('JSON.parse'); }; } })(); </script> <script type="text/javascript"> var xmlHttp = null; if (window.XMLHttpRequest) { xmlHttp = new XMLHttpRequest(); } else if (window.ActiveXObject) { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); } xmlHttp.open("GET", "Default4.aspx?get=ip", true); xmlHttp.onreadystatechange = function() { if (xmlHttp.readyState == 4) { if (xmlHttp.status == 200) { jData = JSON.parse(xmlHttp.responseText); alert(jData.remoteip); alert(jData.mask); alert(jData.gateway); alert(jData.mac); } } } xmlHttp.send(null); </script> </head> <body> <form id="form1" runat="server"> </form> </body> </html>
孟宪会- 已标记为答案 杜宏宇 2009年2月22日 14:02
全部回复
-
办法有多个，最好使用JSON格式，容易解析。如果没有特殊字符也可以这样
context.Response.Write(remoteip+ "@" + mask + "@" + gateway + "@" + mac);
js端
var d = xmlHttp.responseText;
data = d.split("@")
document.getElementById("txt_Singleip").value = data[0]
document.getElementById("txt_mask").value = data[1]
document.getElementById("txt_gateway").value = data[2]
document.getElementById("txt_mac").value = data[3]
孟宪会- 已标记为答案 杜宏宇 2009年2月22日 14:02
-
杜宏宇 说:
老实，如果用jason的话怎么做呢？
1，你需要将http://www.json.org/json2.js包含在你的代码中，
JSON 的相关知识http://www.json.org/
2，完整代码
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> protected void Page_Load(object sender, EventArgs e) { if (Request.QueryString["get"] != null) { string remoteip = "127.0.0.1"; string mask = "maskmaskmask"; string gateway = "gatewaygatewaygateway"; string mac = "macmacmacmac"; string JSONString = "{\"remoteip\":\"" + remoteip + "\",\"mask\":\"" + mask + "\",\"gateway\":\"" + gateway + "\",\"mac\":\"" + mac + "\"}"; Response.ClearContent(); Response.Write(JSONString); Response.End(); } } </script> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title></title> <script type="text/javascript"> if (!this.JSON) { JSON = {}; } (function() { function f(n) { // Format integers to have at least two digits. return n < 10 ? '0' + n : n; } if (typeof Date.prototype.toJSON !== 'function') { Date.prototype.toJSON = function(key) { return this.getUTCFullYear() + '-' + f(this.getUTCMonth() + 1) + '-' + f(this.getUTCDate()) + 'T' + f(this.getUTCHours()) + ':' + f(this.getUTCMinutes()) + ':' + f(this.getUTCSeconds()) + 'Z'; }; String.prototype.toJSON = Number.prototype.toJSON = Boolean.prototype.toJSON = function(key) { return this.valueOf(); }; } var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g, gap, indent, meta = { // table of character substitutions '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"': '\\"', '\\': '\\\\' }, rep; function quote(string) { escapable.lastIndex = 0; return escapable.test(string) ? '"' + string.replace(escapable, function(a) { var c = meta[a]; return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }) + '"' : '"' + string + '"'; } function str(key, holder) { // Produce a string from holder[key]. var i, // The loop counter. k, // The member key. v, // The member value. length, mind = gap, partial, value = holder[key]; // If the value has a toJSON method, call it to obtain a replacement value. if (value && typeof value === 'object' && typeof value.toJSON === 'function') { value = value.toJSON(key); } // If we were called with a replacer function, then call the replacer to // obtain a replacement value. if (typeof rep === 'function') { value = rep.call(holder, key, value); } // What happens next depends on the value's type. switch (typeof value) { case 'string': return quote(value); case 'number': // JSON numbers must be finite. Encode non-finite numbers as null. return isFinite(value) ? String(value) : 'null'; case 'boolean': case 'null': return String(value); // If the type is 'object', we might be dealing with an object or an array or // null. case 'object': // Due to a specification blunder in ECMAScript, typeof null is 'object', // so watch out for that case. if (!value) { return 'null'; } // Make an array to hold the partial results of stringifying this object value. gap += indent; partial = []; // Is the value an array? if (Object.prototype.toString.apply(value) === '[object Array]') { // The value is an array. Stringify every element. Use null as a placeholder // for non-JSON values. length = value.length; for (i = 0; i < length; i += 1) { partial[i] = str(i, value) || 'null'; } // Join all of the elements together, separated with commas, and wrap them in // brackets. v = partial.length === 0 ? '[]' : gap ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : '[' + partial.join(',') + ']'; gap = mind; return v; } // If the replacer is an array, use it to select the members to be stringified. if (rep && typeof rep === 'object') { length = rep.length; for (i = 0; i < length; i += 1) { k = rep[i]; if (typeof k === 'string') { v = str(k, value); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } else { // Otherwise, iterate through all of the keys in the object. for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = str(k, value); if (v) { partial.push(quote(k) + (gap ? ': ' : ':') + v); } } } } // Join all of the member texts together, separated with commas, // and wrap them in braces. v = partial.length === 0 ? '{}' : gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : '{' + partial.join(',') + '}'; gap = mind; return v; } } // If the JSON object does not yet have a stringify method, give it one. if (typeof JSON.stringify !== 'function') { JSON.stringify = function(value, replacer, space) { var i; gap = ''; indent = ''; // If the space parameter is a number, make an indent string containing that // many spaces. if (typeof space === 'number') { for (i = 0; i < space; i += 1) { indent += ' '; } // If the space parameter is a string, it will be used as the indent string. } else if (typeof space === 'string') { indent = space; } // If there is a replacer, it must be a function or an array. // Otherwise, throw an error. rep = replacer; if (replacer && typeof replacer !== 'function' && (typeof replacer !== 'object' || typeof replacer.length !== 'number')) { throw new Error('JSON.stringify'); } // Make a fake root object containing our value under the key of ''. // Return the result of stringifying the value. return str('', { '': value }); }; } // If the JSON object does not yet have a parse method, give it one. if (typeof JSON.parse !== 'function') { JSON.parse = function(text, reviver) { // The parse method takes a text and an optional reviver function, and returns // a JavaScript value if the text is a valid JSON text. var j; function walk(holder, key) { // The walk method is used to recursively walk the resulting structure so // that modifications can be made. var k, v, value = holder[key]; if (value && typeof value === 'object') { for (k in value) { if (Object.hasOwnProperty.call(value, k)) { v = walk(value, k); if (v !== undefined) { value[k] = v; } else { delete value[k]; } } } } return reviver.call(holder, key, value); } cx.lastIndex = 0; if (cx.test(text)) { text = text.replace(cx, function(a) { return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4); }); } if (/^[\],:{}\s]*$/. test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@'). replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']'). replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) { j = eval('(' + text + ')'); return typeof reviver === 'function' ? walk({ '': j }, '') : j; } // If the text is not JSON parseable, then a SyntaxError is thrown. throw new SyntaxError('JSON.parse'); }; } })(); </script> <script type="text/javascript"> var xmlHttp = null; if (window.XMLHttpRequest) { xmlHttp = new XMLHttpRequest(); } else if (window.ActiveXObject) { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); } xmlHttp.open("GET", "Default4.aspx?get=ip", true); xmlHttp.onreadystatechange = function() { if (xmlHttp.readyState == 4) { if (xmlHttp.status == 200) { jData = JSON.parse(xmlHttp.responseText); alert(jData.remoteip); alert(jData.mask); alert(jData.gateway); alert(jData.mac); } } } xmlHttp.send(null); </script> </head> <body> <form id="form1" runat="server"> </form> </body> </html>
孟宪会- 已标记为答案 杜宏宇 2009年2月22日 14:02
