UserInfo 类:
public class UserInfo { private long userId; private String username; private String email; private String telephone; private long createTime; private long lastLoginTime; private String avatarUrl; private String provinceOfAddress; // 省 private String cityOfAddress; // 市 private String regionOfAddress; // 区 private String detailedAddress; // 详细地址 // ... 省略其他属性和方法... }
通过案例分析
Serialization 类实现了一个简单协议的序列化和反序列功能:
/** * Protocol format: identifier-string;{gson string} * For example: UEUEUE;{"a":"A","b":"B"} */ public class Serialization { private static final String IDENTIFIER_STRING = "UEUEUE;"; private Gson gson; public Serialization() { this.gson = new Gson(); } public String serialize(Map<String, String> object) { StringBuilder textBuilder = new StringBuilder(); textBuilder.append(IDENTIFIER_STRING); textBuilder.append(gson.toJson(object)); return textBuilder.toString(); } public Map<String, String> deserialize(String text) { if (!text.startsWith(IDENTIFIER_STRING)) { return Collections.emptyMap(); } String gsonStr = text.substring(IDENTIFIER_STRING.length()); return gson.fromJson(gsonStr, Map.class); } }
拆分成一个只负责序列化工作的 Serializer 类和另一个只负责反序列化工作的 Deserializer 类:
public class Serializer { private static final String IDENTIFIER_STRING = "UEUEUE;"; private Gson gson; public Serializer() { this.gson = new Gson(); } public String serialize(Map<String, String> object) { StringBuilder textBuilder = new StringBuilder(); textBuilder.append(IDENTIFIER_STRING); textBuilder.append(gson.toJson(object)); return textBuilder.toString(); } } public class Deserializer { private static final String IDENTIFIER_STRING = "UEUEUE;"; private Gson gson; public Deserializer() { this.gson = new Gson(); } public Map<String, String> deserialize(String text) { if (!text.startsWith(IDENTIFIER_STRING)) { return Collections.emptyMap(); } String gsonStr = text.substring(IDENTIFIER_STRING.length()); return gson.fromJson(gsonStr, Map.class); } }