I have an URL to encode on my java serveur and then to decode with javascript.
I try to retrieve a String I send in param with java. It is an error message from a form validation function.
I do it like that (server side. Worker.doValidateForm() return a String) :
response.sendRedirect(URLEncoder.encode("form.html?" + Worker.doValidateForm(), "ISO-8859-1"));
Then, in my javascript, I do that :
function retrieveParam() {
var error = window.location.search;
decodeURIComponent(error);
if(error)
alert(error);
}
Of course it doesn't work. Not the same encoding I guess.
So my question is : which method can I use in Java to be able to decode my URL with javascript ?
It's ok ! I have found a solution.
Server side with Java :
URI uri = null;
try {
uri = new URI("http", "localhost:8080", "/PrizeWheel/form.html", Worker.doValidateForm(), null);
} catch (URISyntaxException e) {
this.log.error("class Worker / method doPost:", e); // Just writing the error in my log file
}
String url = uri.toASCIIString();
response.sendRedirect(url);
And in the Javascript (function called in the onload of the redirected page) :
function retrieveParam() {
var error = decodeURI(window.location.search).substring(1);
if(error)
alert(error);
}
You don't use URLEncoder to encode URLs, it us used to encode form data to application/x-www-form-urlencoded MIME format. You use URIEncoder instead, see http://contextroot.blogspot.fi/2012/04/encoding-urls-in-java-is-quite-trivial.html
Related
I tried looking for the solution in the forum but I was unable to find something similar to what I'm trying to achieve. I have a gateway script in an MPG which kinda looks like this:
session.INPUT.readAsJSON(function (error, json) {
if (error){
throw error;
} else {
var SAMLResponse = json['SAMLResponse'];
var RelayState = json['RelayState'];
var urlopen = require('urlopen');
var options = {
target: 'https://************.com/e32d32der2tj90g8h4',
method: 'POST',
headers: { 'HEADER_NAME' : 'VALUE'},
contentType: 'application/json',
timeout: 60,
sslClientProfile: 'ClientProfile',
data: {"SAMLResponse": SAMLResponse, "RelayState": RelayState}
};
urlopen.open(options, function(error, response) {
if (error) {
session.output.write("urlopen error: "+JSON.stringify(error));
} else {
var responseStatusCode = response.statusCode;
var responseReasonPhrase = response.reasonPhrase;
response.readAsBuffer(function(error, responseData){
if (error){
throw error;
} else {
session.output.write(responseData);
console.log(responseData);
}
});
}
});
}
});
I'm doing a POST request and the response I get from the urlopen function is an HTML page, how to I display the contents of that page in my browser? I need that to initiate a process flow. am I going in the wrong direction here? what's the best way to POST to a URI and display it's response in DataPower?
with regards to my experience with DataPower, I just started learning, So I might not be familiar with many of the concepts.
Thanks in Advance!
session.INPUT.readAsJSON() would indicate that you are receiving JSON data as the input (from the POST).
Since you are building this in a Multi-Protocol Gateway (MPGW) you need to set the Response type to non-xml if the response is HTML and if there is no backend call being made (other than the url-open()) you also must set the skip-backside=1 variable.
Is the scenario as:
JSON HTTP Request -> [MPGW] -> url-open() -> Backend server --|
HTTP Response <-----------------------------------------|
Or:
JSON HTTP Request -> [MPGW] -> url-open() --| (skip-backside)
HTTP Response <------------------------|
If there is no backend call I would recommend building this in a XML Firewall (XMLFW) service instead and set it to "loopback" and non-xml.
If there is a backend and that is where you are sending your HTML from the url-open() then only MPGW Response type needs to be set to non-xml.
If it is the second option the you can just set the payload and headers in GWS and just call the target (https://************.com/e32d32der2tj90g8h4) as teh MPGW backside connection, no need for the url-open().
I established a RESTful server, and I can get a simple string with my Chrome or IE using this URL: "http://localhost:8080/WebService/RESTful/getString"
But when using Dart, it always returns a error message:
"[object XMLHttpRequestProgressEvent]"
From the onError() callback method,
I'm sure that server returns a string with "text/plain" MIME type in Java.
Here is the code:
import 'dart:html';
void main() {
HtmlElement btn = document.body.querySelector("#btn");
btn.onClick.listen(onClick);
}
void onClick(Event v) {
var url = "http://localhost:8080/WebService/RESTful/getString";
HttpRequest.getString(url).then((str) {
window.alert(str.toString());
}, onError: (e) {
window.alert(e);
});
}
Who can help me ?
If you try to fetch resources from another server than the one your page was loaded from, this server needs to return CORS headers otherwise your browser refuses to fetch form this other server.
It depends on your server how this can be configured or added.
See for example
- How do you add CORS headers in Redstone interceptor?
- CORS with Dart, how do I get it to work?
I configured the highchart export server for Java from the current master in GitHub. When I tried to export an image using the demo page a corrupted file was returned. I have debugged to code and found out the following message is returned as the result in validate method in ServerObjectFactory.java
String result = server.request("{\"status\":\"isok\"}");
The value of the result String is "Failed rendering:SyntaxError: Unable to parse JSON string"
What can be the cause for this issue.
Thank You
That's very strange. The syntax of the JSON string is syntactically correct. I can point out where from the error is generated.
In the highcharts-convert.js file in highcharts-ecport-convert/src/main/resources/phantomjs the incoming request is expected to be a JSON string and is parsed, see Line 469
function (request, response) {
var jsonStr = request.post,
params,
msg;
try {
params = JSON.parse(jsonStr); // L469
if (params.status) {
// for server health validation
response.statusCode = 200;
response.write('OK');
response.close();
} else {
....
Set in a console.log(jsonStr) before JSON.parse(jsonStr) . I hope this give you a clue of why it's throwing a error.
I am trying to make a POST request.
Here my code:
var myModel = new MydModel({
content: "ciao"
});
console.log(myModel.get("content")); // "ciao"
myModel.save();
If I look to the network activity it looks like this:
The response part {id:0, content:"", ……}
In the header part: Request Payload {"content":"ciao"}
Here my model:
define([], function () {
var MyModel = Backbone.Model.extend({
url: function url ()
{
return "http://localhost/users";
}
});
return MyModel;
});
Is it my problem or is it in the server part?
send/receive vs request/response
a server receives requests and sends responses
a client sends requests and receives responses
in short
if {id:0, content:"", ……} (the response) is wrong, it's your server
if {"content":"asdasdsa"} (the request) is wrong, it's your client
There is little problem with receiving JSON-payload that "Backbone-client" sends to your Apache-server.
All you need to do is to manually parse JSON-payload from input on the server side ("php://input", for PHP), like this:
if($_SERVER['REQUEST_METHOD'] == 'PUT' || $_SERVER['REQUEST_METHOD'] == 'POST') {
$postStr = file_get_contents("php://input");
//json_decode throws error or returns null if input is invalid json
try {
$json = json_decode($postStr, true);
if(empty($json)) {
throw new Exception("Not valid json");
}
//must not be json, try query str instead
} catch(Errfor $e) {
$postVars = parse_str($postStr);
foreach($postVars as $key=>$data) {
$_POST[$key] = $data;
}
}
}
Full explanation you can find here:
http://colinbookman.com/2014/04/08/php-puts-posts-and-backbone-js/
I'm currently developing a Firefox add-on(using https://addons.mozilla.org/en-US/developers/docs/sdk/1.0/ ) that consumes an API where the return data is in xml.
My problem is that I need to parse the returned data, and would like to do that using a xml object.
Since the request module only supports JSON and Text ( https://addons.mozilla.org/en-US/developers/docs/sdk/1.0/packages/addon-kit/docs/request.html#Response ) I need to convert the response.text to XML.
The code looks like this:
var Request = require('request').Request
.......
var req = Request({
url: https://to-the-api.com,
content: {
op: 'get-the-data-op',
password: "super-sec",
user: "username"
},
onComplete: function (response) {
dataAsText = response.text;
console.log("output: " + dataAsText);
}
});
req.post();
I have tried to user (new DOMParser).parseFromString(response.text, 'text/xml') but unfortunately it just fails with a error like ReferenceError: DOMParser is not defined
The question is if anyone of you guys have been able to create a Xml object inside a Firefox add-on, and if so, how?
Looks like the capability to parse response as xml was present, but has been removed. check out this bugzilla reference
Can't you use a normal XMLHttpRequest if you want to process the response as XML?
If DOMParser is unavailable you can try E4X:
var xml = new XML(response.text);
alert(xml.children().length());
You want to use the XMLHttpRequest object to handle your xhr request. Then when you get a response back access the responseXML object of the request variable. In the responseXML you'll have the documentElement and can use the querySelectorAll or querySelector to find elements you want. In each element you want just grab the textContent you need.
Here's an example to get you going (this looks for the 'xmls' element in the response):
var request = new require("xhr").XMLHttpRequest();
request.open('GET', 'https://to-the-api.com', true);
request.onreadystatechange = function (aEvt) {
if (request.readyState == 4) {
if(request.status == 200) {
var xmls = request.responseXML.documentElement.querySelectorAll("xmls");
for (var i = 0; i < xmls.length; i++) {
console.log("xml", i, xmls[i], xmls[i].textContent);
}
}
else {
console.log('Error', request.responseText);
}
}
};
request.send(null);