Skip to content

Instantly share code, notes, and snippets.

@ymnk

ymnk/README

Created January 13, 2011 08:56
Show Gist options
  • Save ymnk/777605 to your computer and use it in GitHub Desktop.
Save ymnk/777605 to your computer and use it in GitHub Desktop.
Download ZIP
pom.xml
Raw
README
% mvn scala:compile
% mvn scala:console
scala> LiftJson.json
Raw
LiftJson.scala
object LiftJson {
val json_string =
"""
{
"created_at":"Wed Nov 18 18:54:12 +0000 2009",
"id":"5833943856",
"text":"RT @peoplemag: New Moon director Chris Weitz says he's quitting movies after one more http://ow.ly/DrjQ",
"source":"web",
"truncated":"false",
"in_reply_to_status_id":"",
"in_reply_to_user_id":"",
"favorited":"false",
"in_reply_to_screen_name":"",
"retweeted_status":{
"created_at":"Wed Nov 18 18:36:34 +0000 2009",
"id":"5833513351",
"text":"New Moon director Chris Weitz says he's quitting movies after one more http://ow.ly/DrjQ",
"source":{
"a":"HootSuite",
"href":"http://www.hootsuite.com",
"rel":"nofollow"
},
"truncated":"false",
"in_reply_to_status_id":"",
"in_reply_to_user_id":"",
"favorited":"false",
"in_reply_to_screen_name":"",
"user":{
"id":"25589776",
"name":"People magazine",
"screen_name":"peoplemag",
"location":"",
"description":"PEOPLE.com is the No. 1 site for celebrity news!",
"profile_image_url":"http://a3.twimg.com/profile_images/116213891/people_73x73_normal.jpg",
"url":"http://www.people.com",
"protected":"false",
"followers_count":"1653473",
"profile_background_color":"08a9e7",
"profile_text_color":"000000",
"profile_link_color":"ee0077",
"profile_sidebar_fill_color":"ffee9a",
"profile_sidebar_border_color":"ffcc66",
"friends_count":"406",
"created_at":"Fri Mar 20 22:30:24 +0000 2009",
"favourites_count":"2",
"utc_offset":"-18000",
"time_zone":"Eastern Time (US and Canada)",
"profile_background_image_url":"http://a1.twimg.com/profile_background_images/6859800/bgpage.gif",
"profile_background_tile":"true",
"statuses_count":"1740",
"notifications":"false",
"geo_enabled":"false",
"verified":"false",
"following":"false"
},
"geo":""
},
"user":{
"id":"44940026",
"name":"Anita Doller",
"screen_name":"testiverse",
"location":"",
"description":"",
"profile_image_url":"http://a3.twimg.com/profile_images/251164577/testing_normal.JPG",
"url":"",
"protected":"false",
"followers_count":"14",
"profile_background_color":"9ae4e8",
"profile_text_color":"000000",
"profile_link_color":"0000ff",
"profile_sidebar_fill_color":"e0ff92",
"profile_sidebar_border_color":"87bc44",
"friends_count":"25",
"created_at":"Fri Jun 05 17:07:09 +0000 2009",
"favourites_count":"1",
"utc_offset":"-28800",
"time_zone":"Pacific Time (US and Canada)",
"profile_background_image_url":"http://s.twimg.com/a/1258507899/images/themes/theme1/bg.png",
"profile_background_tile":"false",
"statuses_count":"14",
"notifications":"false",
"geo_enabled":"false",
"verified":"false",
"following":"true"
},
"geo":""
}
"""
import net.liftweb.json.JsonParser.parse
import net.liftweb.json.JsonAST.{JString, JField}
val json = parse(json_string)
val JField(_, JString(name)) = json \ "user" \ "name"
val JField(_, JString(screen_name)) = json \ "user" \ "screen_name"
val JField(_, JString(text)) = json \ "text"
import net.liftweb.json.JsonAST.render
import net.liftweb.json.Printer.pretty
val pretty_json_string = pretty(render(json))
import net.liftweb.json.Xml.toXml
val xml = toXml(json)
// DSL
import net.liftweb.json.JsonAST._
import net.liftweb.json.JsonDSL._ // implicit defitions
val json_list = List(1, 2, 3)
val json_compact = compact(render(json_list))
}
Raw
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.jcraft</groupId>
<artifactId>foo</artifactId>
<version>0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name></name>
<properties>
<scala.version>2.8.1</scala.version>
</properties>
<repositories>
<repository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>scala-tools.org</id>
<name>Scala-Tools Maven2 Repository</name>
<url>http://scala-tools.org/repo-releases</url>
</pluginRepository>
</pluginRepositories>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scala.version}</version>
</dependency>
<dependency>
<groupId>net.liftweb</groupId>
<artifactId>lift-json_2.8.1</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-compiler</artifactId>
<version>${scala.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/scala</sourceDirectory>
<testSourceDirectory>src/test/scala</testSourceDirectory>
<plugins>
<plugin>
<groupId>org.scala-tools</groupId>
<artifactId>maven-scala-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<scalaVersion>${scala.version}</scalaVersion>
</configuration>
</plugin>
</plugins>
</build>
</project>
Raw
ScalaJson.scala
object ScalaJson {
val json_string =
"""
{
"created_at":"Wed Nov 18 18:54:12 +0000 2009",
"id":"5833943856",
"text":"RT @peoplemag: New Moon director Chris Weitz says he's quitting movies after one more http://ow.ly/DrjQ",
"source":"web",
"truncated":"false",
"in_reply_to_status_id":"",
"in_reply_to_user_id":"",
"favorited":"false",
"in_reply_to_screen_name":"",
"retweeted_status":{
"created_at":"Wed Nov 18 18:36:34 +0000 2009",
"id":"5833513351",
"text":"New Moon director Chris Weitz says he's quitting movies after one more http://ow.ly/DrjQ",
"source":{
"a":"HootSuite",
"href":"http://www.hootsuite.com",
"rel":"nofollow"
},
"truncated":"false",
"in_reply_to_status_id":"",
"in_reply_to_user_id":"",
"favorited":"false",
"in_reply_to_screen_name":"",
"user":{
"id":"25589776",
"name":"People magazine",
"screen_name":"peoplemag",
"location":"",
"description":"PEOPLE.com is the No. 1 site for celebrity news!",
"profile_image_url":"http://a3.twimg.com/profile_images/116213891/people_73x73_normal.jpg",
"url":"http://www.people.com",
"protected":"false",
"followers_count":"1653473",
"profile_background_color":"08a9e7",
"profile_text_color":"000000",
"profile_link_color":"ee0077",
"profile_sidebar_fill_color":"ffee9a",
"profile_sidebar_border_color":"ffcc66",
"friends_count":"406",
"created_at":"Fri Mar 20 22:30:24 +0000 2009",
"favourites_count":"2",
"utc_offset":"-18000",
"time_zone":"Eastern Time (US and Canada)",
"profile_background_image_url":"http://a1.twimg.com/profile_background_images/6859800/bgpage.gif",
"profile_background_tile":"true",
"statuses_count":"1740",
"notifications":"false",
"geo_enabled":"false",
"verified":"false",
"following":"false"
},
"geo":""
},
"user":{
"id":"44940026",
"name":"Anita Doller",
"screen_name":"testiverse",
"location":"",
"description":"",
"profile_image_url":"http://a3.twimg.com/profile_images/251164577/testing_normal.JPG",
"url":"",
"protected":"false",
"followers_count":"14",
"profile_background_color":"9ae4e8",
"profile_text_color":"000000",
"profile_link_color":"0000ff",
"profile_sidebar_fill_color":"e0ff92",
"profile_sidebar_border_color":"87bc44",
"friends_count":"25",
"created_at":"Fri Jun 05 17:07:09 +0000 2009",
"favourites_count":"1",
"utc_offset":"-28800",
"time_zone":"Pacific Time (US and Canada)",
"profile_background_image_url":"http://s.twimg.com/a/1258507899/images/themes/theme1/bg.png",
"profile_background_tile":"false",
"statuses_count":"14",
"notifications":"false",
"geo_enabled":"false",
"verified":"false",
"following":"true"
},
"geo":""
}
"""
import util.parsing.json.JSON
val json = JSON.parse(json_string)
val json_raw = JSON.parseRaw(json_string)
val json_full = JSON.parseFull(json_string)
val screen_name =
json_full.get.asInstanceOf[Map[String,Any]]("user").
asInstanceOf[Map[String,Any]]("screen_name").
asInstanceOf[String]
import util.parsing.json.{JSONObject, JSONArray}
val name = json_raw.get match {
case JSONObject(map) => map("user") match {
case JSONObject(user) => user("name").asInstanceOf[String]
case JSONArray(_) => error("error")
}
case JSONArray(_) => error("error")
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment