Removed apache dependency for hex string generation

Author: bcsorba

lib/commons-codec-1.9.jar

@@ -30,7 +30,6 @@ dist.jar=${dist.dir}/piwik-java-api-${project.version}.jar
 dist.javadoc.dir=${dist.dir}/javadoc
 endorsed.classpath=
 excludes=
-file.reference.commons-codec-1.9.jar=lib/commons-codec-1.9.jar
 file.reference.commons-logging-1.2.jar=lib/commons-logging-1.2.jar
 file.reference.hk2-api.jar=lib/hk2-api.jar
 file.reference.hk2-locator.jar=lib/hk2-locator.jar
@@ -54,7 +53,6 @@ javac.classpath=\
     ${file.reference.pitest-ant-1.1.1.jar}:\
     ${file.reference.sonar-ant-task-2.2.jar}:\
     ${file.reference.javax.json-1.0.4.jar}:\
-    ${file.reference.commons-codec-1.9.jar}:\
     ${file.reference.httpclient-4.4.jar}:\
     ${file.reference.httpcore-4.4.jar}:\
     ${file.reference.javaee-api-7.0.jar}

nbproject/project.properties

@@ -17,7 +17,7 @@
 import java.util.Map;
 import java.util.Random;
 import javax.json.JsonValue;
-import org.apache.commons.codec.binary.Hex;
+import javax.xml.bind.DatatypeConverter;
 
 /**
  * A class that implements the <a href="https://developer.piwik.org/api-reference/tracking-api">
@@ -1451,7 +1451,7 @@ public String getUrlEncodedQueryString(){
     public static String getRandomHexString(int length){
         byte[] bytes = new byte[length/2];
         new Random().nextBytes(bytes);
-        return new String(Hex.encodeHex(bytes));
+        return DatatypeConverter.printHexBinary(bytes);
     }
 
     /**

src/com/ge/corporate/piwik/tracking/PiwikRequest.java

@@ -1142,7 +1142,7 @@ public void testGetUrlEncodedQueryString(){
      */
     @Test
     public void testGetRandomHexString(){
-        String s = request.getRandomHexString(10);
+        String s = PiwikRequest.getRandomHexString(10);
 
         assertEquals(10, s.length());
         Long.parseLong(s, 16);