Java tutorial
/* * Copyright 2012-2013 the original author or authors. * * Licensed 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. */ package com.springboot.demo.domain; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.springboot.demo.repository.redis.RedisJsonMapper; import lombok.Data; import lombok.NoArgsConstructor; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import java.io.IOException; import java.io.Serializable; @Data @Entity @NoArgsConstructor public class City implements Serializable, RedisJsonMapper<City> { private static final long serialVersionUID = 1L; @Id @GeneratedValue private Long id; @Column(nullable = false) private String name; @Column(nullable = false) private String state; @Column(nullable = false) private String country; @Column(nullable = false) private String map; public City(String name, String country) { super(); this.name = name; this.country = country; } @Override public String toJsonString() { final ObjectMapper jacksonObjectMapper = new ObjectMapper(); try { return jacksonObjectMapper.writeValueAsString(this); } catch (JsonProcessingException e) { e.printStackTrace(); } return null; } @Override public City fromJson(String json) { final ObjectMapper jacksonObjectMapper = new ObjectMapper(); try { return jacksonObjectMapper.readValue(json, City.class); } catch (IOException e) { e.printStackTrace(); } return null; } }