why I get blank in outputResult ? when I test with swagger UI , I get output for the same input.

Is this code wrong to get response output ?


MvcResult result = mvc.perform( MockMvcRequestBuilders
		      .post("/api")
		      .content(inputJsonContent)
		      .contentType(MediaType.APPLICATION_JSON)
		      .accept(MediaType.APPLICATION_JSON))
		      .andExpect(status().isOk())
	  		  .andReturn();

String outputResult= result.getResponse().getContentAsString();
System.out.println("outputResult="+ outputResult);