Jackson2.1.4 序列化格式化时间

public class User { private int id; private Date birthday; private double money; private String name; public User() { } public User(int id, String name, Date birthday) { super(); this.id = id; this.name = name; this.birthday = birthday; } public User(int id, String name, double money, Date birthday) { super(); this.id = id; this.name = name; this.money = money; this.birthday = birthday; } public Date getBirthday() { return birthday; } public int getId() { return id; } public double getMoney() { return money; } public String getName() { return name; } public void setBirthday(Date birthday) { this.birthday = birthday; } public void setId(int id) { this.id = id; } public void setMoney(double money) { this.money = money; } public void setName(String name) { this.name = name; } }

结果{"id":1,"name":"JACK","money":0.0,"birthday":"2013-04-01"} 

objectMapper.configure（SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS，FALSE）; 
禁止使用时间戳（数字），而使用[ISO-8601标准的符号，它得到类似的输出：“1970-01-01T00：00:00.000 +0000”。 


@JsonFormat(pattern="yyyy-MM-dd HH:mm:ss", timezone="GMT+8") 
也可以再类的属性上自定义哪些属性需要自定义序列化 
timezone="GMT+8" 这里是中国的时区 东8区 


自定义格式化类 
JsonSerializer<T> 
@JsonSerialize(user=xxx.class)

 

ObjectMapper mapper = new ObjectMapper(); SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); mapper.setDateFormat(format); User user = new User(1,"JACK",new Date()); String outJson = mapper.writeValueAsString(user); System.out.println(outJson);

 

Notes on java.sql.Date (官方不建议使用此类型)

(aka "Please do NOT use java.sql.Date, ever!")

Although Jackson supports java.sql.Date, there are known issues with respect to timezone handling, partly due to design of this class. It is recommended that this type is avoided, if possible, and regular java.util.Date (orjava.util.Calendar) used instead. If this is not possible, it may be necessary for applications to convert these dates using java.util.Calendar and explicit timezone definition.