Application of HTTP headers - only 5?
I see a strange problem with regard to HTTP request headers.
If we make a simple request such as:
Connector.open("http://broken-http-stack.com/test.php").getResponseCode();
on a server that simply prints the request headers in a newspaper, we might see something like this:
host = broken-http-stack.com connection = close content-length = 0
Now let's do a HTTP post request and add custom request headers:
HttpConnection conn = (HttpConnection)Connector.open("http://broken-http-stack.com/test.php");conn.setRequestMethod("POST");
URLEncodedPostData post = new URLEncodedPostData();
// some form parameterspost.append("param1", "blah");post.append("param2", "foo");
conn.setRequestProperty("User-Agent", "Awesome client 1.0");conn.setRequestProperty("X-SpecialID", "12345");conn.setRequestProperty("Content-Type", post.getContentType());
conn.openOutputStream().write(post.getBytes());
// send the requestconn.getResponseCode();
Server side, I get this:
host = broken-http-stack.comconnection = close user-agent = Awesome client 1.0 X-SpecialId = 12345content-length = 64
It is only 5 request headers then 6 sixth must is the content type). At first I thought that perhaps the content-type was not an authorized request header, but I used a random name and saw the same behavior.
Then I changed the order and course content-type appeared in the server log, but it was missing the last header (X-SpecialID).
I tested 4.2.1 4.5 and 4.6 with the same results. Is this a bug or I do something wrong?
Now don't I feel stupid. I was actually adding some headers before writing the post data and then some headers after. It seems that, after writing the post data, no more header can be added. The fix was simple, add all the request headers before writing the post data. Example:
HttpConnection conn = (HttpConnection)Connector.open(url, Connector.READ_WRITE);
conn.setRequestProperty("User-Agent", getUserAgent());
if (headers != null) {
for (int i=0; i
Thank you for your input marchywka.
Tags: BlackBerry Developers
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Generate PDFS using Managed Bean with custom HTTP headers
Background
Generate a report in various formats (PDF, delimited, Excel, HTML, etc.) using JDeveloper 11 g Release 2 (11.1.2.3.0) when you click on an af:commandButton. See also the version StackOverflow about this issue:
http://StackOverflow.com/q/13654625/59087
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Source code
The source code includes:
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Managed bean
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Substitution of HTTP response header
/**
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*/
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}
Question answer full
The bean indirectly says infrastructure that the answer is managed (by the bean):
getFacesContext () .responseComplete ();
Bean, run and configure
public void run() {}
try {}
Report = getReport();
Configures (Report.GetParameters ());
Report.Run ();
} catch (Exception e) {}
e.printStackTrace ();
}
}
private void configuration (parameters p) {}
p.put (ReportImpl.SYSTEM_REPORT_PROTOCOL, "http");
p.put (ReportImpl.SYSTEM_REPORT_HOST, "localhost");
p.put (ReportImpl.SYSTEM_REPORT_PORT, "7002");
p.put (ReportImpl.SYSTEM_REPORT_PATH, "/ reports/rwservlet" "");
p.put (Parameters.PARAM_REPORT_FORMAT, 'pdf');
p.put ("report_cmdkey", getReportName());
p.put ("report_ORACLE_1", getReportDestinationType());
p.put ("report_ORACLE_2", getReportDestinationFormat());
}
Workflow
The workflow calls Execute, which refers to the 'run()' of the bean method:
entry-> Home-> run-> ReportBeanRun
Where:
<-l' call the method id = "ReportBeanRun" >
< description > running a report < / description >
Report to run < display name > < / display-name >
< method > #{reportBean.run} < / method >
< result >
success of < fixed-result > < / fixed-results >
< / results >
< / method >
The bean is assigned to the scope of the "demand", with a few managed properties:
< rule of flow control = "__3" id >
hand < of-activity-id > < /-activity-id >
< control-flow-case id = "ExecuteReport" >
run < from outcome > < / de-results >
ReportBeanRun < to-activity-id > < / to-activity-id >
< / control-flow-case >
< / control-flow-rule >
< managed-bean id = "ReportBean" >
< description > running a report < / description >
< display name > ReportBean < / display-name >
application of < managed-bean-scope > < / managed-bean-scope >
...
< / managed-bean >
The "success < fixed-result > < / fixed-result > ' strikes me as wrong - I don't want to not the method call to return to another task."
Restrictions
The report server receives requests from the web server only. The URL of the report server cannot use browsers to download directly, for security reasons.
Error messages
The error message is generated:
Duplicate received headers from the server
349 (net::ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION) error: multiple headers received separate Content-Disposition. It is not allowed to protect themselves against HTTP response splitting attacks. Nevertheless, the report is generated. Prevents the framework to write headers HTTP would solve this problem.
Question
How can define you HTTP headers in ADF using a workflow to generate a PDF file by calling a managed bean?
Ideas
Some additional ideas:
-Substitute the listener of the Phase of the lifecycle of Page ("ADFPhaseListener" + "PageLifecycle")
-Develop a customized web server Servlet
Related links
-http://www.oracle.com/technetwork/middleware/bi-publisher/adf-bip-ucm-integration-179699.pdf
-http://www.slideshare.net/lucbors/reports-no-notes#btnNext
-http://www.techartifact.com/blogs/2012/03/calling-oracle-report-from-adf-applications.html?goback=%2Egde_4212375_member_102062735
-http://docs.oracle.com/cd/E29049_01/web.1112/e16182/adf_lifecycle.htm#CIABEJFB
Thank you! The problem was that the HTTP headers have been actually written twice:
1. the report server returns the HTTP response headers.
2. the bean was his own (as mentioned in the question) HTTP response headers.
3. the bean was copy all the contents of the report server response, including headers, to the output stream.
Firefox has ignored the header in double, but not Google Chrome errors.
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