1，新建工具類：DateToJsonUtil    程式碼如下：

public class DateToJsonUtil implements JsonValueProcessor { 

    private String format = null;

    public JavaDateObjectToJsonUtil(String format) {
        super();
        this.format = format;
    }

    @Override
    public Object processArrayValue(Object value, JsonConfig jsonConfig) {
        return null;
    }

    @Override
    public Object processObjectValue(String key, Object value, JsonConfig jsonConfig) {
        if (value == null) {
            return "";
        }
        if (value instanceof Date) {
            return new SimpleDateFormat(format).format((Date) value);
        }
        return value.toString();
    }
}
 

2，新建使用者類  User    程式碼如下。

private String name;
    private Date birthday;
    private Integer gender;

    public String getName() {
        return name;
    }

    public Date getBirthday() {
        return birthday;
    }

    public Integer getGender() {
        return gender;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public void setGender(Integer gender) {
        this.gender = gender;
    }
 

2，再要解析的物件處呼叫

        JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.registerJsonValueProcessor(java.util.Date.class,new DateToJsonUtil    ("yyyy-MM-dd"));
        JSONArray result = JSONObject.fromObject(user,jsonConfig);//此user為要解析的物件

3，在要解析的包含該物件的集合處呼叫

 JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.registerJsonValueProcessor(java.util.Date.class,new DateToJsonUtil    ("yyyy-MM-dd"));
jsonConfig.setRootClass(User.class);
        JSONArray result = JSONArray.fromObject(list,jsonConfig);//此list為要解析的集合
 

注意：此處JSON引入的包為： 

net.sf.json-lib

其maven依賴為：

<dependency>
   <groupId>net.sf.json-lib</groupId>
   <artifactId>json-lib</artifactId>
   <version>2.4</version>
   <classifier>jdk15</classifier>
</dependency>