convert JSON Type to Byte array format in java

Question

I have a problem when I want to sending data using byte format in UDP protocol, the problem is when I try to create a data with type json object, I can\'t get the byte format of

Answer 1

Use utility class from ObjectMapper of jackson-databind project, ie objectMapper.writeValueAsBytes(dto) returns byte[]

@Autowired
private ObjectMapper objectMapper;

ContractFilterDTO filter = new ContractFilterDTO();
    mockMvc.perform(post("/api/customer/{ico}", "44077866")
            .contentType(MediaType.APPLICATION_JSON_UTF8_VALUE)
            .content(objectMapper.writeValueAsBytes(filter)))...

Maven dependency:

    com.fasterxml.jackson.core
    jackson-databind
    2.8.8.1