THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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public Object onAction(){
return new StreamResponse() {
@Override
public String getContentType() {
return "application/pdf";
}
@Override
public InputStream getStream() throws IOException {
return new ByteArrayInputStream(getMyPdfByteArray());
}
@Override
public void prepareResponse(Response response) {
response.setHeader("Content-Disposition", "attachment; filename=\"" + myFileName + "\"");
}
};
} |
8. URL response
A java.net.URL response is handled as a client redirect to an external URL. (In Tapestry 5.3.x and earlier this only works for non-Ajax requests.)
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Note: If you are using the tapestry-hibernate integration library and your passivate context is a Hibernate entity, then you can just use the entity itself, not its id. Tapestry will automatically extract the entity's id into the URL, and convert it back for the "activate" event handler method. |
Page
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Activation
When a page render request arrives, the page is activated before it is rendered.
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{float:right|background=#eee|padding=0 1em}
*JumpStart Demos:*
[onActivate and onPassivate| |
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https://tapestry-jumpstart. |
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org/jumpstart/examples/navigation/onactivateandonpassivate/3] [Handling A Bad Context| |
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https://tapestry-jumpstart. |
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org/jumpstart/examples/infrastructure/handlingabadcontext/1] {float} |
Activation serves two purposes:
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At some point, persistent values make more sense. Tapestry has several persistence strategies available, including one that stores data in URL query parameters. See Persistent Page Data for details.
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