对日期的序列化:
一种方法是通过注解
Java代码
- @JSONField (format="yyyy-MM-dd HH:mm:ss")
- public Date birthday;
另一种是通过SerializeConfig:
Java代码
- private static SerializeConfig mapping = new SerializeConfig();
- private static String dateFormat;
- static {
- dateFormat = "yyyy-MM-dd HH:mm:ss";
- mapping.put(Date.class,new SimpleDateFormatSerializer(dateFormat));
- }
json字符串中使用单引号:
String text = JSON.toJSONString(object,SerializerFeature.UseSingleQuotes);
字段显示不同的key:
- public class User {
- @JSONField(name="ID")
- public int getId() { ... }
- }
-
- User user = ...;
- JSON.toJSONString(user); // {"ID":001}
- public class JsonUtil {
- private static SerializeConfig mapping = new SerializeConfig();
- private static String dateFormat;
- static {
- dateFormat = "yyyy-MM-dd HH:mm:ss";
- }
-
- /**
- * 默认的处理时间
- *
- * @param jsonText
- * @return
- */
- public static String toJSON(Object jsonText) {
- return JSON.toJSONString(jsonText,SerializerFeature.WriteDateUseDateFormat);
- }
-
- /**
- * 自定义时间格式
- *
- * @param jsonText
- * @return
- */
- public static String toJSON(String dateFormat,String jsonText) {
- mapping.put(Date.class,new SimpleDateFormatSerializer(dateFormat));
- return JSON.toJSONString(jsonText,mapping);
- }
- }
自定义反序列化示例:
先自定义一个日期解析类:
Java代码
转自:http://my.oschina.net/u/1444624/blog/375740
- public class MyDateFormatDeserializer extends DateFormatDeserializer {
- private String myFormat;
- public MyDateFormatDeserializer(String myFormat) {
- super();
- this.myFormat = myFormat;
- }
- @Override
- protected <Date> Date cast(DefaultJSONParser parser,Type clazz,Object fieldName,Object val) {
- if (myFormat == null) {
- return null;
- }
- if (val instanceof String) {
- String strVal = (String) val;
- if (strVal.length() == 0) {
- return null;
- }
- try {
- return (Date) new SimpleDateFormat(myFormat).parse((String)val);
- } catch (ParseException e) {
- throw new JSONException("parse error");
- }
- }
- throw new JSONException("parse error");
- }
- }