版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.csdn.net/u014365862/article/details/100163695
在搭建一些工程项目时，往往需要有配置文件，而配置文件很多是基于json格式组织的。
这里可直接看代码：
代码语言：javascript复制import scala.util.parsing.json.JSON._
import scala.io.Source
object XMLHelloWorld {
def main(args: Array[String]): Unit = {
def regJson(json:Option[Any]) = json match {
case Some(map: Map[String, Any]) => map
// case None => "erro"
// case other => "Unknow data structure : " other
}
// 解析List
def regList(tmp:Option[Any]) = tmp match {
case Some( list: List[String] ) => list
}
// 解析String
def regString(tmp:Option[Any]) = tmp match {
case Some( str: String ) => str
}
var tt = Map.empty[String, Any]
val tree = parseFull(Source.fromFile("config_params.json").mkString)
val first = regJson(tree)
println(first.get("experiment_name"))
println( regString( first.get("experiment_name") ) )
val dev = first.get("model_monitor")
println( dev )
val sec = regJson(dev)
println( sec.get("evaluator") )
val evList = regList( sec.get("evaluator") )
println( enList )
//tt = tree match {
// case Some(map: Map[String, Any]) => map
//}
//println(tt.getClass.getSimpleName)
//println(tt.get("experiment_name"))
//println(tt.get("model_monitor"))
}
}
/*
// config_params.json
{
"experiment_name": "qdml_command_test",
"experiment_id": "16",
"problem_type": "classifier",
"estimator": "xgradient_boosting",
"fit_gird": false,
"eval_metric": "auc",
"model_monitor": {
"evaluator": [
"auc",
"precision_score",
"recall_score",
"ks_value"
],
"threshold": 0.5,
"is_vaild": true
}
}
*/pom.xml
代码语言：javascript复制<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>sample</groupId>
<artifactId>scala-module-dependency-sample</artifactId>
<version>1.0-SNAPSHOT</version>
<!-- Maven profiles allow you to support both Scala 2.10, 2.11 and Scala 2.12 with
the right dependencies for modules specified for each version separately -->
<profiles>
<profile>
<id>scala-2.12</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<properties>
<scalaVersion>2.12.0</scalaVersion>
<scalaBinaryVersion>2.12</scalaBinaryVersion>
</properties>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scalaVersion}</version>
</dependency>
<dependency>
<groupId>org.scala-lang.modules</groupId>
<artifactId>scala-xml_${scalaBinaryVersion}</artifactId>
<version>1.0.6</version>
</dependency>
<dependency>
<groupId>org.scala-lang.modules</groupId>
<artifactId>scala-parser-combinators_${scalaBinaryVersion}</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>org.scala-lang.modules</groupId>
<artifactId>scala-swing_${scalaBinaryVersion}</artifactId>
<version>2.0.0-M2</version>
</dependency>
<dependency>
<groupId>net.minidev</groupId>
<artifactId>json-smart</artifactId>
<version>2.3</version>
</dependency>
</dependencies>
</profile>
<profile>
<id>scala-2.11</id>
<properties>
<scalaVersion>2.11.8</scalaVersion>
<scalaBinaryVersion>2.11</scalaBinaryVersion>
</properties>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scalaVersion}</version>
</dependency>
<dependency>
<groupId>org.scala-lang.modules</groupId>
<artifactId>scala-xml_${scalaBinaryVersion}</artifactId>
<version>1.0.6</version>
</dependency>
<dependency>
<groupId>org.scala-lang.modules</groupId>
<artifactId>scala-parser-combinators_${scalaBinaryVersion}</artifactId>
<version>1.0.4</version>
</dependency>
<dependency>
<groupId>org.scala-lang.modules</groupId>
<artifactId>scala-swing_${scalaBinaryVersion}</artifactId>
<version>1.0.2</version>
</dependency>
</dependencies>
</profile>
<profile>
<id>scala-2.10</id>
<properties>
<scalaVersion>2.10.6</scalaVersion>
<scalaBinaryVersion>2.10</scalaBinaryVersion>
</properties>
<dependencies>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-library</artifactId>
<version>${scalaVersion}</version>
</dependency>
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-swing</artifactId>
<version>${scalaVersion}</version>
</dependency>
</dependencies>
</profile>
</profiles>
<build>
<sourceDirectory>src/main/scala</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>3.2.1</version>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>testCompile</goal>
</goals>
</execution>
</executions>
<configuration>
<args>
<!-- work-around for https://issues.scala-lang.org/browse/SI-8358 -->
<arg>-nobootcp</arg>
</args>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>XMLHelloWorld</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>运行：
mvn clean package
cd target
java -jar scala-module-dependency-sample-1.0-SNAPSHOT.jar
结果：
Some(qdml_command_test) Some(Map(evaluator -> List(auc, precision_score, recall_score, ks_value), threshold -> 0.5, is_vaild -> true)) Some(List(auc, precision_score, recall_score, ks_value))
git：https://github.com/MachineLP/Spark-/tree/master/scala-json
还可以参考：（1）https://www.cnblogs.com/hithink/p/9986227.html
