<p>Some text</p>n<p>"SomeText"</p>

{
    "code": {
    "num": 12
},
    "obj": {
        "label": "somelabel",
        "order": 1
    },
    "det": {
        "part": "1",
        "cont": true
    },
     "html": "<p>Mine text</p>"
}

{
    "code": {
    "num": 12
},
"obj": {
    "label": "somelabel",
    "order": 1
},
"det": {
    "part":"1",
    "cont": true
},
"html":{"code": {
    "num": 12
    },
    "obj": {
        "label": "somelabel",
        "order": 1
    },
    "det": {
    "part":"
    }

objectMapper.writeValue(response.getWriter(), myObject)

PrintWriter writer = response.getWriter();
writer.print(String.valueOf(objectMapper.writeValueAsBytes(myObject));
writer.flush();

Gson gson = new GsonBuilder().disableHtmlEscaping().create();