use slf4j for logging

json-path/pom.xml

@@ -34,6 +34,10 @@
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.codehaus.jackson</groupId>
             <artifactId>jackson-mapper-asl</artifactId>

json-path/src/main/java/com/jayway/jsonpath/JsonPath.java

@@ -16,14 +16,16 @@ package com.jayway.jsonpath;
 
 
 import com.jayway.jsonpath.internal.IOUtils;
-import com.jayway.jsonpath.internal.Log;
 import com.jayway.jsonpath.internal.PathToken;
 import com.jayway.jsonpath.internal.PathTokenizer;
 import com.jayway.jsonpath.internal.filter.PathTokenFilter;
 import com.jayway.jsonpath.spi.HttpProviderFactory;
 import com.jayway.jsonpath.spi.JsonProvider;
 import com.jayway.jsonpath.spi.JsonProviderFactory;
+
 import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.FileInputStream;
@@ -105,6 +107,8 @@ public class JsonPath {
 
     private PathTokenizer tokenizer;
     private LinkedList<Filter> filters;
+    
+    private final Logger logger = LoggerFactory.getLogger(JsonPath.class);
 
     private JsonPath(String jsonPath, Filter[] filters) {
 
@@ -122,9 +126,7 @@ public class JsonPath {
 
         this.tokenizer = new PathTokenizer(jsonPath);
 
-        if(Log.isDebugEnabled()){
-            Log.debug("New JsonPath:\n{}", this.tokenizer.toString());
-        }
+        logger.debug("New JsonPath:\n{}", this.tokenizer);
 
         this.filters = new LinkedList<Filter>();
         this.filters.addAll(asList(filters));

json-path/src/main/java/com/jayway/jsonpath/internal/Log.java

@@ -1,50 +0,0 @@
-package com.jayway.jsonpath.internal;
-
-import org.apache.commons.lang3.StringUtils;
-
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- * User: kalle
- * Date: 8/28/13
- * Time: 10:23 AM
- */
-public final class Log {
-
-    private Log() {
-    }
-
-    private static boolean enabled = false;
-
-    public static void enableDebug(){
-        enabled = true;
-    }
-
-    public static boolean isDebugEnabled(){
-        return enabled;
-    }
-
-    public static void debug(String msg, Object... args){
-        if(enabled){
-
-            int argCount = StringUtils.countMatches(msg, "{}");
-
-            if(!(argCount == args.length)){
-                throw new RuntimeException("Invalid debug statement.");
-            }
-
-            StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace();
-
-            String cls = stackTraceElements[2].getClassName();
-
-            msg = msg.replaceFirst(Pattern.quote("{}"), "%s");
-
-            msg = String.format(msg, args);
-
-            System.out.println("DEBUG [" + Thread.currentThread().getName() + "] " + cls + "  " +  msg);
-        }
-
-    }
-
-}

json-path/src/test/java/com/jayway/jsonpath/LogTest.java

@@ -1,22 +0,0 @@
-package com.jayway.jsonpath;
-
-import com.jayway.jsonpath.internal.Log;
-import org.junit.Test;
-
-/**
- * User: kalle
- * Date: 8/28/13
- * Time: 10:40 AM
- */
-public class LogTest {
-
-
-    @Test
-    public void logger_expands_templates() {
-
-        Log.enableDebug();
-
-        Log.debug("foo \n{}", "bar");
-
-    }
-}

json-path/src/test/resources/logback-test.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration>
-    <contextName>myAppName</contextName>
-    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-        <encoder>
-            <pattern>%-5level [%t] %logger{36} - %msg%n</pattern>
-        </encoder>
-    </appender>
-
-    <logger name="com.jayway.jsonpath" level="TRACE"/>
-
-    <root level="debug">
-        <appender-ref ref="STDOUT" />
-    </root>
-</configuration>

pom.xml

@@ -57,7 +57,6 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
         <slf4j.version>1.7.5</slf4j.version>
-        <logback.version>1.0.13</logback.version>
         <junit.version>4.10</junit.version>
         <commons-io.version>2.4</commons-io.version>
         <commons-lang.version>3.1</commons-lang.version>
@@ -125,7 +124,16 @@
                     <target>1.6</target>
                 </configuration>
             </plugin>
-
+            <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-surefire-plugin</artifactId>
+              <version>2.16</version>
+              <configuration>
+                <systemPropertyVariables>
+                  <org.slf4j.simpleLogger.defaultLogLevel>debug</org.slf4j.simpleLogger.defaultLogLevel>
+                </systemPropertyVariables>
+              </configuration>
+            </plugin>
         </plugins>
     </build>
 
@@ -232,11 +240,11 @@
             </dependency>
 
             <dependency>
-                <groupId>ch.qos.logback</groupId>
-                <artifactId>logback-classic</artifactId>
-                <version>${logback.version}</version>
+                <groupId>org.slf4j</groupId>
+                <artifactId>slf4j-simple</artifactId>
+                <version>${slf4j.version}</version>
             </dependency>
-
+            
             <dependency>
                 <groupId>junit</groupId>
                 <artifactId>junit</artifactId>
@@ -268,13 +276,7 @@
 
         <dependency>
             <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-api</artifactId>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>ch.qos.logback</groupId>
-            <artifactId>logback-classic</artifactId>
+            <artifactId>slf4j-simple</artifactId>
             <scope>test</scope>
         </dependency>