我正在将一些xml映射到一个案例类,它工作正常,但我感觉我的命令性的眼罩让我眼花缭乱,找到了更好的功能解决方案.任何人都可以建议一个比这更好的方法：
def buildAddress(geocodeResponse: NodeSeq) : Address = {
val addressNodes = geocodeResponse \\ "address_component"
var street = " "
var town = ""
var suburb = ""
var province = ""
var country = ""
var postalCode = ""
addressNodes.foreach {node =>
val typestring = (node \ "type").head.text
if ("street_number" == typestring) {
street = (node \ "long_name").text + street
}
else if ("route" == typestring) {
street = street + (node \ "long_name").text
}
else if ("locality" == typestring) {
town = (node \ "long_name").text
}
else if ("sublocality" == typestring) {
suburb = (node \ "long_name").text
}
else if ("administrative_area_level_1" == typestring) {
province = (node \ "long_name").text
}
else if ("country" == typestring) {
country = (node \ "long_name").text
}
else if ("postal_code" == typestring) {
town = (node \ "long_name").text
}
}
Address(street,suburb,town,province,country,postalCode)
}
在这种情况下,使用dispatch从Google地理编码API中检索xml.
import dispatch._ def lookupAddress(lat: Double,long: Double): Address = { val position = lat.toString + "," + long.toString val req = url("http://maps.googleapis.com/maps/api/geocode/xml") <<? Map("latlng" -> position,"sensor" -> "true") Http(req </> { nodes => buildAddress(nodes) }) }
xml结果如下所示：
<GeocodeResponse>
<status>OK</status>
<result>
<type>street_address</type>
<formatted_address>3 Louw St,Stellenbosch 7600,South Africa</formatted_address>
<address_component>
<long_name>3</long_name>
<short_name>3</short_name>
<type>street_number</type>
</address_component>
<address_component>
<long_name>Louw St</long_name>
<short_name>Louw St</short_name>
<type>route</type>
</address_component>
<address_component>
<long_name>Stellenbosch Central</long_name>
<short_name>Stellenbosch Central</short_name>
<type>sublocality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>administrative_area_level_3</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Brede River DC</long_name>
<short_name>Brede River DC</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<address_component>
<long_name>7600</long_name>
<short_name>7600</short_name>
<type>postal_code</type>
</address_component>
<geometry>
<location>
<lat>-33.9403990</lat>
<lng>18.8610090</lng>
</location>
<location_type>ROOFTOP</location_type>
<viewport>
<southwest>
<lat>-33.9435466</lat>
<lng>18.8578614</lng>
</southwest>
<northeast>
<lat>-33.9372514</lat>
<lng>18.8641566</lng>
</northeast>
</viewport>
</geometry>
</result>
<result>
<type>sublocality</type>
<type>political</type>
<formatted_address>Stellenbosch Central,Stellenbosch,South Africa</formatted_address>
<address_component>
<long_name>Stellenbosch Central</long_name>
<short_name>Stellenbosch Central</short_name>
<type>sublocality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>administrative_area_level_3</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Brede River DC</long_name>
<short_name>Brede River DC</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-33.9354048</lat>
<lng>18.8640607</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-33.9437180</lat>
<lng>18.8449199</lng>
</southwest>
<northeast>
<lat>-33.9230960</lat>
<lng>18.8778929</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-33.9437180</lat>
<lng>18.8449199</lng>
</southwest>
<northeast>
<lat>-33.9230960</lat>
<lng>18.8778929</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>postal_code</type>
<formatted_address>7599,South Africa</formatted_address>
<address_component>
<long_name>7599</long_name>
<short_name>7599</short_name>
<type>postal_code</type>
</address_component>
<address_component>
<long_name>Brede River DC</long_name>
<short_name>Brede River DC</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-33.9300286</lat>
<lng>18.8640607</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-33.9693080</lat>
<lng>18.8019200</lng>
</southwest>
<northeast>
<lat>-33.8700550</lat>
<lng>18.9232900</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-33.9693080</lat>
<lng>18.8019200</lng>
</southwest>
<northeast>
<lat>-33.8700550</lat>
<lng>18.9232900</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>locality</type>
<type>political</type>
<formatted_address>Stellenbosch,South Africa</formatted_address>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>locality</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>administrative_area_level_3</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Brede River DC</long_name>
<short_name>Brede River DC</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-33.9366667</lat>
<lng>18.8613889</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-34.0150869</lat>
<lng>18.7658819</lng>
</southwest>
<northeast>
<lat>-33.8782960</lat>
<lng>18.9232900</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-34.0150869</lat>
<lng>18.7658819</lng>
</southwest>
<northeast>
<lat>-33.8782960</lat>
<lng>18.9232900</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>postal_code</type>
<formatted_address>7600,South Africa</formatted_address>
<address_component>
<long_name>7600</long_name>
<short_name>7600</short_name>
<type>postal_code</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry/>
</result>
<result>
<type>administrative_area_level_3</type>
<type>political</type>
<formatted_address>Stellenbosch,South Africa</formatted_address>
<address_component>
<long_name>Stellenbosch</long_name>
<short_name>Stellenbosch</short_name>
<type>administrative_area_level_3</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Brede River DC</long_name>
<short_name>Brede River DC</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-33.9405478</lat>
<lng>18.9502232</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-34.0633899</lat>
<lng>18.7083300</lng>
</southwest>
<northeast>
<lat>-33.7933599</lat>
<lng>19.2438000</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-34.0633899</lat>
<lng>18.7083300</lng>
</southwest>
<northeast>
<lat>-33.7933599</lat>
<lng>19.2438000</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>administrative_area_level_2</type>
<type>political</type>
<formatted_address>Brede River DC,South Africa</formatted_address>
<address_component>
<long_name>Brede River DC</long_name>
<short_name>Brede River DC</short_name>
<type>administrative_area_level_2</type>
<type>political</type>
</address_component>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-33.4220698</lat>
<lng>19.7591675</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-34.1172599</lat>
<lng>18.7083299</lng>
</southwest>
<northeast>
<lat>-32.1844899</lat>
<lng>21.0103399</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-34.1172599</lat>
<lng>18.7083299</lng>
</southwest>
<northeast>
<lat>-32.1844899</lat>
<lng>21.0103399</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>administrative_area_level_1</type>
<type>political</type>
<formatted_address>Western Cape,South Africa</formatted_address>
<address_component>
<long_name>Western Cape</long_name>
<short_name>WC</short_name>
<type>administrative_area_level_1</type>
<type>political</type>
</address_component>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-33.2277918</lat>
<lng>21.8568586</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-34.8330538</lat>
<lng>17.7575638</lng>
</southwest>
<northeast>
<lat>-30.4302599</lat>
<lng>24.2224100</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-34.8330538</lat>
<lng>17.7575638</lng>
</southwest>
<northeast>
<lat>-30.4302599</lat>
<lng>24.2224100</lng>
</northeast>
</bounds>
</geometry>
</result>
<result>
<type>country</type>
<type>political</type>
<formatted_address>South Africa</formatted_address>
<address_component>
<long_name>South Africa</long_name>
<short_name>ZA</short_name>
<type>country</type>
<type>political</type>
</address_component>
<geometry>
<location>
<lat>-30.5594820</lat>
<lng>22.9375060</lng>
</location>
<location_type>APPROXIMATE</location_type>
<viewport>
<southwest>
<lat>-34.9670000</lat>
<lng>16.2817000</lng>
</southwest>
<northeast>
<lat>-22.1253869</lat>
<lng>33.0469000</lng>
</northeast>
</viewport>
<bounds>
<southwest>
<lat>-34.9670000</lat>
<lng>16.2817000</lng>
</southwest>
<northeast>
<lat>-22.1253869</lat>
<lng>33.0469000</lng>
</northeast>
</bounds>
</geometry>
</result>
</GeocodeResponse>
解决方法
除非你得到某种反思,否则你真的没有太多可以让它变得更好.看起来你可以改善你的属性匹配,做这样的事情,以帮助它的纯粹苦差事：
def buildAddress(geocodeResponse: NodeSeq) : Address = {
def getComponent(component: String): String = {
val longNames = for {
addressComponent <- geocodeResponse \\ "address_component"
componentType <- addressComponent \ "type"
if componentType.text == component
} yield addressComponent \ "long_name"
longNames.head.text
}
implicit def toC(s: String) = new { def c = getComponent(s) }
implicit val map = Map(
'street -> ("route".c + "street_number".c),'town -> "locality".c,'suburb -> "sublocality".c,'province -> "administrative_area_level_1".c,'country -> "country".c,'postalCode -> "postal_code".c
)
Address('street,'suburb,'town,'province,'country,'postalCode)
}
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 dio@foxmail.com 举报，一经查实，本站将立刻删除。
