7.1.2 Posting a Request Body

All the examples up until now have used the same HTTP method i.e GET. The HttpRequest interface has factory methods for all the different HTTP methods. The following table summarizes the available methods:

A create method also exists to construct a request for any HttpMethod type. Since the POST, PUT and PATCH methods require a body, a second argument which is the body object is required.

The following example demonstrates how to send a simply String body:

Sending a String body

        Flowable<HttpResponse<String>> call = client.exchange(
                POST("/hello", "Hello John") (1)
                    .contentType(MediaType.TEXT_PLAIN_TYPE)
                    .accept(MediaType.TEXT_PLAIN_TYPE), (2)
                String.class (3)
        );

Sending a String body

        Flowable<HttpResponse<String>> call = client.exchange(
                POST("/hello", "Hello John") (1)
                    .contentType(MediaType.TEXT_PLAIN_TYPE)
                    .accept(MediaType.TEXT_PLAIN_TYPE), (2)
                String.class (3)
        )

Sending a String body

            val call = client.exchange(
                    POST("/hello", "Hello John") (1)
                            .contentType(MediaType.TEXT_PLAIN_TYPE)
                            .accept(MediaType.TEXT_PLAIN_TYPE), String::class.java (3)
            )