jsonp

Sending JSONP vs. JSON data?

落花浮王杯 提交于 2019-12-17 11:50:05
问题 I am making a web service that needs to return data in JSONP format. I am using the JSON taglib for JSP, and I thought all that had to be added were parenthesis, but I cannot find a good resource which verifies this. For example, ever web service function returns using this function: private static String getJSONPObject(String s) throws JSONException { return "(" + new JSONObject(s) + ")"; } Is this correct? Thanks! 回答1: JSONP is simply a hack to allow web apps to retrieve data across domains

Using JSONP when returning XML

爱⌒轻易说出口 提交于 2019-12-17 11:44:13
问题 I asked an earlier question which was definitely helpful and let me know about JSONP. However, I see that I have to specify JSONP as the datatype. Now, as far as I know, that is the return type of the data coming back, which would be XML. Can XML be returned using JSONP or am I limited to it coming back as JSONP format? Thanks! 回答1: You're limited to JSONP (and not XML) because of how it works. JSONP turns into this: <script src="myPage?callback=myFunction" type="text/javscript"> So when you

js 对象 / json / jsonb / jsonp 区别

你。 提交于 2019-12-17 09:47:00
一、JSON vs JS 对象 1、区别 区别 Javascript 对象 Json 含义 对象的实例 一种数据格式(序列化格式) 传输 不能传输 可以 跨平台 传输,轻量级 格式 1.键不加引号、加单引号、双引号都行 2.值可以是函数、对象、字符串、数字、boolean 等 1. 键必须得加双引号 2. 值不能为函数/undefined/NaN 注: 序列化格式 :早期有 XML,后来基于 javascript 诞生了更轻量的 JSON,再后来还有YAML。 针对于科学使用的大量数据集合,例如气候,海洋模型和卫星数据,开发了特定的二进制序列化标准,例如HDF,netCDF和较旧的GRIB。 2、序列化 (1)序列化操作 正序列化 - JSON.stringify() 反序列化 - JSON.parse() 、(不推荐)eval() // 初始化 JS 对象 var obj_origin = { a: 1, b: "2", 'c': 3 } console.log(obj_origin) // { a: 1, b: '2', c: 3 } // 正序列化 var objStr = JSON.stringify(obj_origin) console.log(objStr) // {"a":1,"b":"2","c":3} // 反序列化 var obj = JSON.parse

WCF error : 405 Method Not Allowed

廉价感情. 提交于 2019-12-17 09:45:25
问题 Going nuts with this issue. I have a solution with 2 projects, one of them is a plain old html with jquery ajax call while the other is a WCF service. The html page will issue a ajax call to the WCF service to get a json string and use it for display purpose. Now the issue is whenever i run in debug mode, both the html page and the WCF will be started with different port. And this has created a cross-origin issue for me when i perform testing (i.e. getting a 405 Method Not Allowed error with

JSON string to JS object

自作多情 提交于 2019-12-17 07:15:57
问题 I am using a JS object to create graphs with Google visualization. I am trying to design the data source. At first, I created a JS object client-side. var JSONObject = { cols: [{id: 'date', label: 'Date', type: 'date'}, {id: 'soldpencils', label: 'Sold Pencils', type: 'number'}, {id: 'soldpens', label: 'Sold Pens', type: 'number'}], rows: [{c:[{v: new Date(2008,1,1),f:'2/1/2008'},{v: 30000}, {v: 40645}]}, {c:[{v: new Date(2008,1,2),f:'2/2/2008'},{v: 14045}, {v: 20374}]}, {c:[{v: new Date(2008

Is JSONP safe to use?

我的梦境 提交于 2019-12-17 07:04:31
问题 Are there any security issues that should be considered when using JSONP? 回答1: Update : JSONP is a common hack to do cross-domain requests. Modern browsers now have Cross Origin Resource Sharing, and IE8+ have XDomainRequest which is similar. See http://enable-cors.org/ for more info. JSONP is just a script include that allows you to use a callback. You should however be aware of Cross-site request forgery (CSRF). As long as you control the script and the server, JSONP isn't anymore insecure

Callback function for JSONP with jQuery AJAX

半世苍凉 提交于 2019-12-17 06:36:23
问题 I didn't quite understand how to work with the callback for the ajax function of jQuery. I have the following code in the JavaScript: try { $.ajax({ url: 'http://url.of.my.server/submit?callback=?', cache: false, type: 'POST', data: $("#survey").serialize(), dataType: "jsonp", timeout: 200, crossDomain: true, jsonp: 'jsonp_callback', success: function (data, status) { mySurvey.closePopup(); }, error: function (xOptions, textStatus) { mySurvey.closePopup(); } }); } catch (err) { mySurvey

Express服务器开发

喜夏-厌秋 提交于 2019-12-17 06:26:34
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 作者 | Jeskson 来源 | 达达前端小酒馆 Express服务器开发 创建Express应用程序,Express路由,pug视图模板的使用 Express简介: 让我们来创建Express应用程序,Express是一个Node.js Web应用框架,它很强大,可以为用户创建各种Web应用和HTTP工具,使用Express框架可以搭建一个完整功能的网站。 Express框架的优点: 可以用中间件来响应HTTP请求,可以定义路由表用于执行不同的HTTP请求,可以向模板传参数来动态渲染HTML页面。 命令行安装Express框架: cnpm install express --save Express框架安装在node_modules目录中,然后需要一起安装如下模块: body-parser是node.js的中间件,可以处理JSON,Raw,Text,URL编码的数据,cookie-parser是一个解析Cookie的中间件,然后通过req.cookies可以获取传过来的Cookie,并转为对象。 multer是node.js的中间件,用于处理enctype="multipart/form-data"的表单数据。 cnpm install body-parser --save cnpm install

parsererror after jQuery.ajax request with jsonp content type

喜欢而已 提交于 2019-12-17 02:30:08
问题 I am using jQuery Version 1.5.1 to do the following ajax call: $.ajax({ dataType: 'jsonp', data: { api_key : apiKey }, url: "http://de.dawanda.com/api/v1/" + resource + ".json", success: function(data) { console.log(data); }, error: function(jqXHR, textStatus, errorThrown) { console.log(errorThrown); console.log(textStatus); } }); The server responds with a valid json object: { "response": { "type":"category", "entries":1, "params":{ "format":"json", "api_key":

JSONP request error handling

守給你的承諾、 提交于 2019-12-17 02:29:16
问题 I'm making an ajax jsonp request, but the failure error handling wont work. If the request is 404 or 500 it won't handle the error. I've been looking around to find an answer to this, but can't find anything. There seems to be a solution with http://code.google.com/p/jquery-jsonp/, but I can't find any examples on how to use it. function authenticate(user, pass) { $.ajax ({ type: "POST", url: "url", dataType: 'jsonp', async: false, //json object to sent to the authentication url data: {"u":