Jackson 序列化和反序列化方法（单个实体、集合）

桃扇骨 2023-09-29 14:55 33阅读 0赞

**目录**

1 Maven依赖

2 TestModel

3 序列化和反序列化

3.1 单个实体

3.2 集合

--------------------

## 1 Maven依赖 ##

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>

## 2 TestModel ##

@Data
    public class TestModel {
        private LocalDate localDate;
        private String localDateStr;
        private LocalDateTime localDateTime;
        private String localDateTimeStr;
    }

## 3 序列化和反序列化 ##

### 3.1 单个实体 ###

/**
         * 测试单个实体反序列化和反序列化
         */
        @Test
        public void testModelSerializeAndDeserialize() throws Exception {
            TestModel testModel = new TestModel();
            testModel.setLocalDate(LocalDate.now());
            testModel.setLocalDateTime(LocalDateTime.now());
            String jsonStr = objectMapper.writeValueAsString(testModel);
            testModel = objectMapper.readValue(objectMapper.getFactory().createParser(jsonStr),TestModel.class);
        }

### 3.2 集合 ###

/**
         * 测试集合反序列化和反序列化
         */
        @Test
        public void testCollectionSerializeAndDeserialize() throws Exception  {
            List<TestModel> testModelList = new ArrayList<>();
            TestModel testModel = new TestModel();
            testModel.setLocalDate(LocalDate.now());
            testModel.setLocalDateTime(LocalDateTime.now());
            testModelList.add(testModel);
            String jsonStr = objectMapper.writeValueAsString(testModelList);
            testModelList = objectMapper.readValues(objectMapper.getFactory().createParser(jsonStr), new TypeReference<List<TestModel>>() {
            }).readAll().get(0);
        }