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20.10. Output with multipart/related
RESTEasy provides a simple API to output
multipart/related.
package org.jboss.resteasy.plugins.providers.multipart;
public class MultipartRelatedOutput extends MultipartOutput
{
public OutputPart getRootPart()
public OutputPart addPart(Object entity, MediaType mediaType,
String contentId, String contentTransferEncoding)
public String getStartInfo()
public void setStartInfo(String startInfo)
}
package org.jboss.resteasy.plugins.providers.multipart;
public class MultipartRelatedOutput extends MultipartOutput
{
public OutputPart getRootPart()
public OutputPart addPart(Object entity, MediaType mediaType,
String contentId, String contentTransferEncoding)
public String getStartInfo()
public void setStartInfo(String startInfo)
}
To output
multipart/related, create a MultipartRelatedOutput object and call addPart() methods. The first added part is used as the root part of the multipart/related message. RESTEasy automatically locates a MessageBodyWriter to marshal your entity objects. As with MultipartInput, your marshalling may be sensitive to generic type metadata. In this case, use GenericType. The example below returns a multipart/related format to the calling client — a HTML file with two images.
@Path("/related")
public class MyService
{
@GET
@Produces("multipart/related")
public MultipartRelatedOutput get()
{
MultipartRelatedOutput output = new MultipartRelatedOutput();
output.setStartInfo("text/html");
Map<String, String> mediaTypeParameters = new LinkedHashMap<String, String>();
mediaTypeParameters.put("charset", "UTF-8");
mediaTypeParameters.put("type", "text/html");
output
.addPart(
"<html><body>\n"
+ "This is me: <img src='cid:http://example.org/me.png' />\n"
+ "<br />This is you: <img src='cid:http://example.org/you.png' />\n"
+ "</body></html>",
new MediaType("text", "html", mediaTypeParameters),
"<mymessage.xml@example.org>", "8bit");
output.addPart("// binary octets for me png",
new MediaType("image", "png"), "<http://example.org/me.png>",
"binary");
output.addPart("// binary octets for you png", new MediaType(
"image", "png"),
"<http://example.org/you.png>", "binary");
client.putRelated(output);
return output;
}
}
@Path("/related")
public class MyService
{
@GET
@Produces("multipart/related")
public MultipartRelatedOutput get()
{
MultipartRelatedOutput output = new MultipartRelatedOutput();
output.setStartInfo("text/html");
Map<String, String> mediaTypeParameters = new LinkedHashMap<String, String>();
mediaTypeParameters.put("charset", "UTF-8");
mediaTypeParameters.put("type", "text/html");
output
.addPart(
"<html><body>\n"
+ "This is me: <img src='cid:http://example.org/me.png' />\n"
+ "<br />This is you: <img src='cid:http://example.org/you.png' />\n"
+ "</body></html>",
new MediaType("text", "html", mediaTypeParameters),
"<mymessage.xml@example.org>", "8bit");
output.addPart("// binary octets for me png",
new MediaType("image", "png"), "<http://example.org/me.png>",
"binary");
output.addPart("// binary octets for you png", new MediaType(
"image", "png"),
"<http://example.org/you.png>", "binary");
client.putRelated(output);
return output;
}
}
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