Done

.gitignore

@@ -0,0 +1,13 @@
+### Example user template template
+### Example user template
+
+# IntelliJ project files
+.idea
+*.iml
+target
+pom.xml
+
+
+out
+gen
+# Created by .ignore support plugin (hsz.mobi)

META-INF/MANIFEST.MF

@@ -0,0 +1,2 @@
+Manifest-Version: 1.0
+

output/artifacts/HomeTaskWeek9_war_exploded/META-INF/MANIFEST.MF

@@ -0,0 +1,5 @@
+Manifest-Version: 1.0
+Built-By: sergei
+Created-By: IntelliJ IDEA
+Build-Jdk: 1.8.0_45
+

pom.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>groupId</groupId>
+    <artifactId>HomeTaskWeek9</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    <packaging>war</packaging>
+
+
+</project>

src/main/java/com/geekhub/hw8/CreateFileServlet.java

@@ -0,0 +1,35 @@
+package com.geekhub.hw8;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+@WebServlet("/file/create")
+public class CreateFileServlet extends HttpServlet {
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String folder = req.getParameter("folder");
+        String fileName = req.getParameter("fileName");
+        String fileExtension = req.getParameter("fileExtension");
+
+        Path path = Paths.get(folder + "/" + fileName + "." + fileExtension);
+
+        if (!Files.exists(path)) {
+            Files.createFile(path);
+
+        }else try {
+            throw new Exception("File with this name exist");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        req.getRequestDispatcher("/dir/view?path=" + folder + "/").forward(req, resp);
+
+    }
+}

src/com/geekhub/hw8/IndexServlet.java → src/main/java/com/geekhub/hw8/IndexServlet.java

@@ -6,6 +6,9 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 
 @WebServlet("/")
 public class IndexServlet extends HttpServlet {

src/main/java/com/geekhub/hw8/RemoveFileServlet.java

@@ -0,0 +1,32 @@
+package com.geekhub.hw8;
+
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+@WebServlet("/file/remove")
+public class RemoveFileServlet extends HttpServlet {
+
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String removeFile = req.getParameter("remove");
+        Path path = Paths.get(removeFile);
+        String folder = path.getParent().toString();
+
+        if (!Files.deleteIfExists(path)) try {
+            throw new Exception("File is not exist");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        req.getRequestDispatcher("/dir/view?path=" + folder + "/").forward(req, resp);
+
+    }
+}

src/main/java/com/geekhub/hw8/ViewDirectoryServlet.java

@@ -0,0 +1,142 @@
+package com.geekhub.hw8;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebInitParam;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.DirectoryStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+@WebServlet(value = "/dir/view", initParams = {
+        @WebInitParam(name = "root", value = "/home/")
+})
+public class ViewDirectoryServlet extends HttpServlet {
+
+    private static Path ROOT_PATH;
+
+    @Override
+    public void init(ServletConfig config) throws ServletException {
+        ROOT_PATH = Paths.get(config.getInitParameter("root"));
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        Path path;
+        String pathParameter = req.getParameter("path");
+        if (pathParameter != null) {
+            path = Paths.get(pathParameter);
+        } else path = ROOT_PATH;
+
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("<html>");
+        sb.append("<head>");
+        sb.append("<link rel=\"stylesheet\" href=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css\" integrity=\"sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7\" crossorigin=\"anonymous\">");
+        sb.append("</head>");
+        sb.append("<body>");
+        sb.append("<div class =\"jumbotron\">");
+        sb.append("<h3> Create file :</h3>");
+
+        sb.append("<form  action=\"/file/create\" method=\"get\">\n" +
+                "    <input type=\"text\" name=\"folder\" hidden value=\"" + path + "\">\n" +
+                "    <label>File name</label>\n" +
+                "    <input type=\"text\" name=\"fileName\">\n" +
+                "    <label>File extension</label>\n" +
+                "    <input type=\"text\" name=\"fileExtension\">\n" +
+                "    <button type=\"submit\">Create file</button>\n" +
+                "</form>");
+        sb.append("</div>");
+
+
+        sb.append("<div class=\"container\">");
+        sb.append("<div class =\"row\">");
+        sb.append("<div class = \"col-lg-8\">");
+        sb.append("</div>");
+        sb.append("<table class=\"table table-striped\">" +
+                " <thead> " +
+                "<tr>" +
+                " <th>#</th>" +
+                " <th>File name</th> " +
+                "<th>Type</th> " +
+                "<th>Remove</th>" +
+                "</tr> " +
+                "</thead>");
+
+        sb.append("<tbody>");
+        int rowNumber = 0;
+        for (Path pathToFile : pathList(path)) {
+            appendRow(sb, path.getFileName().toString(), pathToFile, ++rowNumber);
+        }
+        sb.append("</tbody>");
+        sb.append("</table>");
+        sb.append("</div>");
+        sb.append("</div>");
+
+        sb.append(" <script src=\"https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js\"></script>");
+        sb.append("<script src=\"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js\" integrity=\"sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS\" crossorigin=\"anonymous\"></script>");
+        sb.append("</body>");
+        sb.append("</html>");
+
+        resp.getWriter().write(sb.toString());
+    }
+
+    private void appendRow(StringBuilder sb, String text, Path path, int rowNumber) {
+        sb.append("<tr>");
+
+        sb.append("<td>");
+        sb.append(rowNumber);
+        sb.append("</td>");
+
+        if (Files.isDirectory(path)) {
+            sb.append("<td>");
+            sb.append("<a href=\"" + "/dir/view" + "?path=" + path.toString() + "\">" + path.getFileName().toString() + "</a>");
+            sb.append("</td>");
+
+            sb.append("<td>");
+            sb.append("<img src =\"http://findicons.com/files/icons/2221/folder/128/normal_folder.png\" height=\"15\" width=\"15\">");
+            sb.append("</td>");
+        } else {
+            sb.append("<td>");
+            sb.append("<a href=\"" + "/file/view" + "?path=" + path.toString() + "\">" + path.getFileName().toString() + "</a>");
+            sb.append("</td>");
+
+            sb.append("<td>");
+            sb.append("<img src =\"http://megaicons.net/static/img/icons_sizes/8/178/256/very-basic-file-icon.png\" height=\"15\" width=\"15\">");
+            sb.append("</td>");
+        }
+
+        sb.append("<td>");
+        sb.append("<form action=\"/file/remove\" method=\"get\">\n" +
+                "    <input type=\"text\" name=\"remove\" value=\"" + path.toString() + "/" + "\" hidden>\n" +
+                "    <button type=\"submit\">remove</button>\n" +
+                "</form>");
+        sb.append("</td>");
+
+        sb.append("</tr>");
+
+    }
+
+
+    public List<Path> pathList(Path directory) {
+        List<Path> paths = new ArrayList<>();
+        try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(directory)) {
+            for (Path path : directoryStream) {
+                paths.add(path);
+            }
+        } catch (IOException ex) {
+            System.out.println(" IOException");
+        }
+        Collections.sort(paths, (Path p1, Path p2) -> p1.getFileName().toString().compareTo(p2.getFileName().toString()));
+        return paths;
+    }
+}

src/com/geekhub/hw8/ViewFileServlet.java → src/main/java/com/geekhub/hw8/ViewFileServlet.java

@@ -5,14 +5,24 @@
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import java.io.BufferedReader;
+import java.io.FileReader;
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 
 @WebServlet("/file/view")
 public class ViewFileServlet extends HttpServlet {
 
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
-        super.doGet(req, resp);
+        Path path = Paths.get(req.getParameter("path"));
+        resp.setHeader("Content-Disposition", "attachment;filename=\"" + path.getFileName().toString() + "\"");
+
+        byte[] file = Files.readAllBytes(path);
+        resp.setContentLength(file.length);
+
+        resp.getOutputStream().write(file);
     }
 }

target/HomeTaskWeek9-1.0-SNAPSHOT/META-INF/MANIFEST.MF

@@ -0,0 +1,5 @@
+Manifest-Version: 1.0
+Built-By: sergei
+Created-By: IntelliJ IDEA
+Build-Jdk: 1.8.0_45
+

web/WEB-INF/web.xml

@@ -3,5 +3,4 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
          version="3.1">
-
 </web-app>