ObjectMapper 主要用作java对象的json化和返json化
看示例:
public class ObjectMapperDemo { public ObjectMapper initObject(){ ObjectMapper objectMapper = new ObjectMapper(); // 转换为格式化的json objectMapper.enable(SerializationFeature.INDENT_OUTPUT); //新增属性不报错 objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); return objectMapper; } public static void main(String [] args) throws IOException { Person person = new Person(30, "qobin"); ObjectMapper objectMapper = new ObjectMapperDemo().initObject(); System.out.println(objectMapper.writeValueAsString(person)); objectMapper.writeValue(new FileWriter(new File("E:\\demo.txt"), true), person); } }