Here you can find the source of toJson(Object dto)
public static String toJson(Object dto) throws JsonProcessingException
//package com.java2s; /**// w w w. j av a2 s . c o m * Copyright 2005-2015 Red Hat, Inc. * * Red Hat licenses this file to you under the Apache License, version * 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied. See the License for the specific language governing * permissions and limitations under the License. */ import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationFeature; public class Main { public static String toJson(Object dto) throws JsonProcessingException { ObjectMapper mapper = createObjectMapper(); return mapper.writeValueAsString(dto); } /** * Creates a configured Jackson object mapper for parsing JSON */ public static ObjectMapper createObjectMapper() { ObjectMapper mapper = new ObjectMapper(); mapper.enable(SerializationFeature.INDENT_OUTPUT); return mapper; } }