Jackson 2-通过在Android上改装REST-API直接反序列化字符串
我正在反序列化一个json,其中包含一个java.util.Date作为字符串,格式为“yyyy-MM-dd-HH:MM:ss”。我的目标是将其解析为一个日期,以便以后可以作为java.util.date访问它 我的POJO包含以下内容:Jackson 2-通过在Android上改装REST-API直接反序列化字符串,android,date,jackson,retrofit,Android,Date,Jackson,Retrofit,我正在反序列化一个json,其中包含一个java.util.Date作为字符串,格式为“yyyy-MM-dd-HH:MM:ss”。我的目标是将其解析为一个日期,以便以后可以作为java.util.date访问它 我的POJO包含以下内容: @JsonInclude(JsonInclude.Include.NON_NULL) @Generated("org.jsonschema2pojo") @JsonPropertyOrder({ "id", "dateTime", "c
@JsonInclude(JsonInclude.Include.NON_NULL)
@Generated("org.jsonschema2pojo")
@JsonPropertyOrder({
"id",
"dateTime",
"currentPeriod",
(...)
})
public class MatchItem {
@JsonProperty("id")
private int id;
@JsonProperty("dateTime")
@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd HH:mm:ss",
private Date dateTime;
@JsonProperty("currentPeriod")
private int currentPeriod;
(...)
@JsonProperty("dateTime")
public Date getDateTime() {
return dateTime;
}
@JsonProperty("dateTime")
public void setDateTime(Date dateTime) {
this.dateTime = dateTime;
}
然后我使用RESTAPI(改型)直接反序列化我的服务器json响应。将日期保留为字符串格式是可行的,但是当我试图将其反序列化为java.util.date时,它就不能了
我怎样才能让它工作
谢谢你们的帮助。最后,我没有找到一种方法来完成我只想用Jackson注释来完成的事情,我通过实现一个定制的转换器来进行改装,如下图所示:
JacksonConverter matchItemConverter = new JacksonConverter(Utils.getHwObjectMapper());
RestAdapter restAdapter = new RestAdapter.Builder()
.setEndpoint(URL)
.setConverter(matchItemConverter)
.build();
创建objectmapper时,请确保添加日期格式:
public static ObjectMapper getHwObjectMapper() {
ObjectMapper hWObjectMapper = new ObjectMapper();
hWObjectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.ENGLISH));
return hWObjectMapper;
}
并将其作为基于Jackson的转换器:
public class JacksonConverter implements Converter {
private final ObjectMapper mapper;
public JacksonConverter(ObjectMapper mapper) {
this.mapper = mapper;
}
@Override public Object fromBody(TypedInput body, Type type) throws ConversionException
{
String charset = "UTF-8";
if (body.mimeType() != null) {
charset = MimeUtil.parseCharset(body.mimeType());
}
InputStreamReader isr = null;
try {
isr = new InputStreamReader(body.in(), charset);
return mapper.readValue(isr, TypeFactory.rawClass(type));
} catch (IOException e) {
throw new ConversionException(e);
} finally {
if (isr != null) {
try {
isr.close();
} catch (IOException ignored) {
ignored.printStackTrace();
}
}
}
}
@Override public TypedOutput toBody(Object object) {
try {
return new JsonTypedOutput(mapper.writeValueAsBytes(object));
} catch (JsonProcessingException e) {
throw new AssertionError(e);
}
}
private static class JsonTypedOutput implements TypedOutput {
private final byte[] jsonBytes;
JsonTypedOutput(byte[] jsonBytes) {
this.jsonBytes = jsonBytes;
}
@Override public String fileName() {
return null;
}
@Override public String mimeType() {
return "application/json; charset=UTF-8";
}
@Override public long length() {
return jsonBytes.length;
}
@Override public void writeTo(OutputStream out) throws IOException {
out.write(jsonBytes);
}
}
}
当您直接反序列化日期时,您使用什么格式?您是否查看过本文档中的去唾液酸部分: