Remove Apache Commons IO dependency and split into smaller methods (#942)

* Fix the requested changes

* Split into smaller methods

* Split into smaller methods

* Remove apache dependency and split into smaller methods

* Add unit tests

jsoup/pom.xml

@@ -15,15 +15,16 @@
             <version>${jsoup.version}</version>
         </dependency>
         <dependency>
-            <groupId>commons-io</groupId>
-            <artifactId>commons-io</artifactId>
-            <version>${commons.io.version}</version>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
         </dependency>
     </dependencies>
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <commons.io.version>2.5</commons.io.version>
+
         <jsoup.version>1.10.1</jsoup.version>
     </properties>
 </project>

jsoup/src/main/java/com/baeldung/jsoup/JsoupParser.java

@@ -1,47 +1,33 @@
 package com.baeldung.jsoup;
 
-import java.io.File;
 import java.io.IOException;
-import org.apache.commons.io.FileUtils;
-import org.jsoup.HttpStatusException;
 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.jsoup.nodes.Element;
 import org.jsoup.parser.Tag;
 import org.jsoup.select.Elements;
 
-public class JsoupExample {
+public class JsoupParser {
 
-    public static void main(String[] args) throws IOException {
-        scrapeSpringBlog();
+    Document doc;
+
+    public void loadDocument(String blogUrl) throws IOException {
+        doc = Jsoup.connect(blogUrl).get();
     }
 
-    static void scrapeSpringBlog() throws IOException {
-        String blogUrl = "https://spring.io/blog";
-        Document doc = Jsoup.connect(blogUrl).get();
-
-        try {
-            Document doc404 = Jsoup.connect("https://spring.io/will-not-be-found").get();
-        } catch (HttpStatusException ex) {
-            System.out.println(ex.getMessage());
-        }
-
-        Document docCustomConn = Jsoup.connect(blogUrl).userAgent("Mozilla").get();
-        docCustomConn = Jsoup.connect(blogUrl).timeout(5000).get();
-        docCustomConn = Jsoup.connect(blogUrl).cookie("cookiename", "val234").get();
-        // docCustomConn = Jsoup.connect(blogUrl).data("datakey", "datavalue").post();
-        docCustomConn = Jsoup.connect(blogUrl).header("headersecurity", "xyz123").get();
-
-        docCustomConn = Jsoup.connect(blogUrl)
+    void loadDocumentCustomized(String blogUrl) throws IOException {
+        doc = Jsoup.connect(blogUrl)
                 .userAgent("Mozilla")
                 .timeout(5000)
                 .cookie("cookiename", "val234")
                 .cookie("anothercookie", "ilovejsoup")
+                .referrer("http://google.com")
                 .header("headersecurity", "xyz123")
                 .get();
+    }
 
+    void examplesSelectors() {
         Elements links = doc.select("a");
-        Elements sections = doc.select("section");
         Elements logo = doc.select(".spring-logo--container");
         Elements pagination = doc.select("#pagination_control");
         Elements divsDescendant = doc.select("header div");
@@ -50,6 +36,14 @@ public class JsoupExample {
         Element pag = doc.getElementById("pagination_control");
         Elements desktopOnly = doc.getElementsByClass("desktopOnly");
 
+        Elements sections = doc.select("section");
+        Element firstSection = sections.first();
+        Elements sectionParagraphs = firstSection.select(".paragraph");
+    }
+
+    void examplesTraversing() {
+        Elements sections = doc.select("section");
+
         Element firstSection = sections.first();
         Element lastSection = sections.last();
         Element secondSection = sections.get(2);
@@ -59,9 +53,9 @@ public class JsoupExample {
         Elements siblings = firstSection.siblingElements();
 
         sections.stream().forEach(el -> System.out.println("section: " + el));
+    }
 
-        Elements sectionParagraphs = firstSection.select(".paragraph");
-
+    void examplesExtracting() {
         Element firstArticle = doc.select("article").first();
         Element timeElement = firstArticle.select("time").first();
         String dateTimeOfFirstArticle = timeElement.attr("datetime");
@@ -69,7 +63,14 @@ public class JsoupExample {
         String sectionDivText = sectionDiv.text();
         String articleHtml = firstArticle.html();
         String outerHtml = firstArticle.outerHtml();
+    }
 
+    void examplesModifying() {
+        Element firstArticle = doc.select("article").first();
+        Element timeElement = firstArticle.select("time").first();
+        Element sectionDiv = firstArticle.select("section div").first();
+
+        String dateTimeOfFirstArticle = timeElement.attr("datetime");
         timeElement.attr("datetime", "2016-12-16 15:19:54.3");
         sectionDiv.text("foo bar");
         firstArticle.select("h2").html("<div><span></span></div>");
@@ -82,8 +83,9 @@ public class JsoupExample {
 
         doc.select("li.navbar-link").remove();
         firstArticle.select("img").remove();
+    }
 
-        File indexFile = new File("/tmp", "spring_blog_home.html");
-        FileUtils.writeStringToFile(indexFile, doc.html(), doc.charset());
+    String getTidyHtml() {
+        return doc.html();
     }
 }

jsoup/src/test/java/com/baeldung/jsoup/JsoupParserTest.java

@@ -0,0 +1,36 @@
+package com.baeldung.jsoup;
+
+import java.io.IOException;
+import org.jsoup.HttpStatusException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import org.junit.Before;
+import org.junit.Test;
+
+public class JsoupParserTest {
+
+    JsoupParser jsoupParser;
+
+    @Before
+    public void setUp() {
+        jsoupParser = new JsoupParser();
+    }
+
+    @Test
+    public void test404() throws IOException {
+        try {
+            jsoupParser.loadDocument("https://spring.io/will-not-be-found");
+        } catch (HttpStatusException ex) {
+            assertEquals(404, ex.getStatusCode());
+        }
+    }
+
+    @Test
+    public void testChange() throws IOException {
+        jsoupParser.loadDocument("http://spring.io/blog");
+
+        jsoupParser.examplesModifying();
+
+        assertTrue(jsoupParser.getTidyHtml().contains("http://baeldung.com"));
+    }
+}