Trying to use Spring Boot REST to Read JSON String from POST

I think the simplest/handy way to consuming JSON is using a Java class that resembles your JSON: https://stackoverflow.com/a/6019761

But if you can't use a Java class you can use one of these two solutions.

Solution 1: you can do it receiving a Map<String, Object> from your controller:

@RequestMapping(    value = "/process",     method = RequestMethod.POST)public void process(@RequestBody Map<String, Object> payload)     throws Exception {  System.out.println(payload);}

Using your request:

curl -H "Accept: application/json" -H "Content-type: application/json" \-X POST -d '{"name":"value"}' http://localhost:8080/myservice/process

Solution 2: otherwise you can get the POST payload as a String:

@RequestMapping(    value = "/process",     method = RequestMethod.POST,    consumes = "text/plain")public void process(@RequestBody String payload) throws Exception {  System.out.println(payload);}

Then parse the string as you want. Note that must be specified consumes = "text/plain" on your controller.In this case you must change your request with Content-type: text/plain:

curl -H "Accept: application/json" -H "Content-type: text/plain" -X POST \-d '{"name":"value"}' http://localhost:8080/myservice/process

To add on to Andrea's solution, if you are passing an array of JSONs for instance

[    {"name":"value"},    {"name":"value2"}]

Then you will need to set up the Spring Boot Controller like so:

@RequestMapping(    value = "/process",     method = RequestMethod.POST)public void process(@RequestBody Map<String, Object>[] payload)     throws Exception {    System.out.println(payload);}

To receive arbitrary Json in Spring-Boot, you can simply use Jackson's JsonNode. The appropriate converter is automatically configured.

    @PostMapping(value="/process")    public void process(@RequestBody com.fasterxml.jackson.databind.JsonNode payload) {        System.out.println(payload);    }