Java : HttpRequest.BodyPublisher with Examples
HttpRequest.BodyPublisher (Java SE 21 & JDK 21) with Examples.
You will find code examples on most HttpRequest.BodyPublisher methods.
Summary
A BodyPublisher converts high-level Java objects into a flow of byte buffers suitable for sending as a request body. The class BodyPublishers provides implementations of many common publishers.
final var body = HttpRequest.BodyPublishers.ofString("abc XYZ 123");
System.out.println(body.contentLength()); // 11
final var uri = URI.create("https://example.com/");
final var request = HttpRequest.newBuilder(uri)
.POST(body)
.header("Content-Type", "text/plain; charset=UTF-8")
.build();
System.out.println(request); // https://example.com/ POST
Methods
long contentLength ()
Returns the content length for this request body.
final var body = HttpRequest.BodyPublishers.ofString("abc XYZ 123");
System.out.println(body.contentLength()); // 11
final var body = HttpRequest.BodyPublishers.noBody();
System.out.println(body.contentLength()); // 0