fastjson支持多种方式定制序列化：
- 通过@JSONField定制序列化
- 通过@JSONType定制序列化
- 通过SerializeFilter定制序列化
- 通过ParseProcess定制反序列化
1. 利用@JSONField的format配置日期格式化，这个在上一篇文章有所展示。
2. 利用@JSONField的serialize指定字段不序列化：
package com.ant.jdk8.json;import com.alibaba.fastjson.annotation.JSONField;import java.util.Date;public class User { ???private String name; ???@JSONField(serialize=false) ???private int age; ???@JSONField(format="yyyy-MM-dd HH:mm:ss") ???private Date hireDate; ???public String getName() { ???????return name; ???} ???public void setName(String name) { ???????this.name = name; ???} ???public int getAge() { ???????return age; ???} ???public void setAge(int age) { ???????this.age = age; ???} ???public Date getHireDate() { ???????return hireDate; ???} ???public void setHireDate(Date hireDate) { ???????this.hireDate = hireDate; ???} ???public User(String name, int age, Date hireDate) { ???????this.name = name; ???????this.age = age; ???????this.hireDate = hireDate; ???} ???public User() { ???}}package com.ant.jdk8.json;import com.alibaba.fastjson.JSON;import java.util.ArrayList;import java.util.Date;import java.util.List;public class JsonDemo { ???public static void main(String[] args) { ???????convertCollectionToJson(); ???} ???public static void convertCollectionToJson(){ ???????List<User> userList = new ArrayList<>(); ???????userList.add(new User("tom",20,new Date())); ???????userList.add(new User("jack",25,new Date())); ???????String jsonString = JSON.toJSONString(userList); ???????System.out.println(jsonString); ???}}3. 利用@JSONField的ordinal指定序列化的顺序(这个特性需要1.1.42以上版本)：
package com.ant.jdk8.json;import com.alibaba.fastjson.annotation.JSONField;import java.util.Date;public class User { ???@JSONField(ordinal=3) ???private String name; ???@JSONField(ordinal=2) ???private int age; ???@JSONField(format="yyyy-MM-dd HH:mm:ss",ordinal = 1) ???private Date hireDate; ???public String getName() { ???????return name; ???} ???public void setName(String name) { ???????this.name = name; ???} ???public int getAge() { ???????return age; ???} ???public void setAge(int age) { ???????this.age = age; ???} ???public Date getHireDate() { ???????return hireDate; ???} ???public void setHireDate(Date hireDate) { ???????this.hireDate = hireDate; ???} ???public User(String name, int age, Date hireDate) { ???????this.name = name; ???????this.age = age; ???????this.hireDate = hireDate; ???} ???public User() { ???}}package com.ant.jdk8.json;import com.alibaba.fastjson.JSON;import java.util.ArrayList;import java.util.Date;import java.util.List;public class JsonDemo { ???public static void main(String[] args) { ???????convertCollectionToJson(); ???} ???public static void convertCollectionToJson(){ ???????List<User> userList = new ArrayList<>(); ???????userList.add(new User("tom",20,new Date())); ???????userList.add(new User("jack",25,new Date())); ???????String jsonString = JSON.toJSONString(userList); ???????System.out.println(jsonString); ???}}4. 利用@JSONField的name指定字段的名称：
package com.ant.jdk8.json;import com.alibaba.fastjson.annotation.JSONField;import java.util.Date;public class User { ???@JSONField(ordinal=3,name="username") ???private String name; ???@JSONField(ordinal=2) ???private int age; ???@JSONField(format="yyyy-MM-dd HH:mm:ss",ordinal = 1) ???private Date hireDate; ???public String getName() { ???????return name; ???} ???public void setName(String name) { ???????this.name = name; ???} ???public int getAge() { ???????return age; ???} ???public void setAge(int age) { ???????this.age = age; ???} ???public Date getHireDate() { ???????return hireDate; ???} ???public void setHireDate(Date hireDate) { ???????this.hireDate = hireDate; ???} ???public User(String name, int age, Date hireDate) { ???????this.name = name; ???????this.age = age; ???????this.hireDate = hireDate; ???} ???public User() { ???}}package com.ant.jdk8.json;import com.alibaba.fastjson.JSON;import java.util.ArrayList;import java.util.Date;import java.util.List;public class JsonDemo { ???public static void main(String[] args) { ???????convertCollectionToJson(); ???} ???public static void convertCollectionToJson(){ ???????List<User> userList = new ArrayList<>(); ???????userList.add(new User("tom",20,new Date())); ???????userList.add(new User("jack",25,new Date())); ???????String jsonString = JSON.toJSONString(userList); ???????System.out.println(jsonString); ???}}@JSONField的使用
原文地址：https://www.cnblogs.com/i-hard-working/p/9221254.html