HW9 Done

pom.xml

@@ -0,0 +1,62 @@
+<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>com.geekhub.hw9</groupId>
+	<artifactId>HomeTaskWeek9</artifactId>
+	<packaging>war</packaging>
+	<version>1.0</version>
+
+	<properties>
+		<spring.version>3.2.5.RELEASE</spring.version>
+        <javax.servlet>3.0.1</javax.servlet>
+	</properties>
+
+	<dependencies>
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-core</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-web</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-webmvc</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>${javax.servlet}</version>
+            <scope>provided</scope>
+        </dependency>
+
+		<dependency>
+			<groupId>jstl</groupId>
+			<artifactId>jstl</artifactId>
+			<version>1.2</version>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<finalName>HomeTaskWeek9</finalName>
+		<plugins>
+			<plugin>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<source>1.7</source>
+					<target>1.7</target>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

src/main/java/com/geekhub/hw9/AppContextListener.java

@@ -0,0 +1,19 @@
+package com.geekhub.hw9;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+import javax.servlet.annotation.WebListener;
+
+@WebListener
+public class AppContextListener implements ServletContextListener{
+
+    @Override
+    public void contextInitialized(ServletContextEvent event) {
+        ServletContext context = event.getServletContext();
+        context.setAttribute("context", context.getContextPath());
+    }
+
+    @Override
+    public void contextDestroyed(ServletContextEvent servletContextEvent) {}
+}

src/main/java/com/geekhub/hw9/CreateFileServlet.java

@@ -0,0 +1,42 @@
+package com.geekhub.hw9;
+
+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.*;
+
+@WebServlet("/file/create")
+public class CreateFileServlet extends HttpServlet {
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String pathParam = (String) req.getSession().getAttribute("path");
+        String filename = req.getParameter("filename");
+        Path path = null;
+        try {
+            path = Paths.get(pathParam, filename);
+        } catch (InvalidPathException e) {
+            e.printStackTrace();
+        }
+        String result = "";
+        try {
+            if (Files.exists(Files.createFile(path))) {
+                result = String.format("File \"%s\" created successfully!", filename);
+            }
+        } catch (FileAlreadyExistsException x) {
+            result = String.format("File \"%s\" already exists!", filename);
+        } catch (IOException x) {
+            result = String.format("Error creating file \"%s\" !", filename);
+        }
+        req.getSession().setAttribute("created", result);
+        resp.sendRedirect("/dir/view");
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+
+    }
+}

src/com/geekhub/hw8/IndexServlet.java → src/main/java/com/geekhub/hw9/IndexServlet.java

@@ -1,4 +1,4 @@
-package com.geekhub.hw8;
+package com.geekhub.hw9;
 
 import javax.servlet.ServletException;
 import javax.servlet.annotation.WebServlet;
@@ -7,7 +7,7 @@
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
 
-@WebServlet("/")
+@WebServlet({"/index"})
 public class IndexServlet extends HttpServlet {
 
     @Override

src/main/java/com/geekhub/hw9/RemoveFileServlet.java

@@ -0,0 +1,35 @@
+package com.geekhub.hw9;
+
+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.DirectoryNotEmptyException;
+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 doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String parameter = req.getParameter("path");
+        Path path = Paths.get(parameter);
+        String result = "";
+        try {
+            if (Files.deleteIfExists(path)) {
+                result = String.format("File \"%s\" deleted!", path.getFileName());
+            }
+        } catch (DirectoryNotEmptyException e) {
+            result = "Directory is not empty!";
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        req.getSession().setAttribute("deleted", result);
+        req.getSession().setAttribute("path", path.getParent().toString());
+        resp.sendRedirect("/dir/view");
+    }
+}

src/main/java/com/geekhub/hw9/ViewDirectoryServlet.java

@@ -0,0 +1,64 @@
+package com.geekhub.hw9;
+
+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.file.*;
+import java.util.HashMap;
+import java.util.Map;
+
+@WebServlet(value = "/dir/view", initParams = {
+    @WebInitParam(name = "root", value = "D:\\temp")
+})
+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 doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String parameter = req.getParameter("path");
+        req.getSession().setAttribute("path", parameter);
+        resp.sendRedirect("/dir/view");
+    }
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        Map<String, String> dirLinks = new HashMap<>();
+        Map<String, String> fileLinks = new HashMap<>();
+
+        String pathParam = (String) req.getSession().getAttribute("path");
+        Path path = (pathParam == null) ? ROOT_PATH : Paths.get(pathParam);
+        // append files and directories list
+        try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(path)) {
+            for (Path entry: directoryStream) {
+                String linkText = entry.getName(entry.getNameCount()-1).toString();
+                Path linkPath = entry.toAbsolutePath();
+                if (Files.isDirectory(linkPath, LinkOption.NOFOLLOW_LINKS)) {
+                    dirLinks.put(linkText, linkPath.toString());
+                } else if (Files.isReadable(entry.toAbsolutePath())) {
+                    fileLinks.put(linkText, linkPath.toString());
+                } else {
+                    fileLinks.put(linkText, "");
+                }
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        req.setAttribute("dirLinks", dirLinks);
+        req.setAttribute("fileLinks", fileLinks);
+        req.getSession().setAttribute("path", path.toString());
+        req.setAttribute("backPath", path.getParent().toString());
+        req.setAttribute("root", ROOT_PATH);
+        req.getRequestDispatcher("/WEB-INF/jsp/viewDirectory.jsp").forward(req, resp);
+    }
+}

src/main/java/com/geekhub/hw9/ViewFileServlet.java

@@ -0,0 +1,47 @@
+package com.geekhub.hw9;
+
+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.*;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+
+@WebServlet("/file/view")
+public class ViewFileServlet extends HttpServlet {
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        String parameter = req.getParameter("path");
+        Path path = Paths.get(parameter);
+        ArrayList<String> lines = new ArrayList<>();
+        String result = "";
+
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(path.toString()), "windows-1251"))) {
+/*        try (BufferedReader reader = Files.newBufferedReader(path)) {*/
+            String line;
+            while ((line = reader.readLine()) != null) {
+                lines.add(line);
+            }
+        } catch (UnsupportedEncodingException e) {
+            result = "Unknown Encoding!";
+        } catch (IOException e) {
+            result = "Error open file!";
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+            result = "Unknown exception!";
+        }
+        req.getSession().setAttribute("opened", result);
+        if (result.equals("")) {
+            req.setAttribute("lines", lines);
+            req.setAttribute("backPath", path.getParent().toString());
+            req.setAttribute("filename", path.getFileName());
+            req.getRequestDispatcher("/WEB-INF/jsp/viewFile.jsp").forward(req, resp);
+        } else {
+            resp.sendRedirect("/dir/view");
+        }
+    }
+}

src/main/webapp/WEB-INF/jsp/footer.jsp

@@ -0,0 +1,5 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+
+<footer>
+    <div class="copy"> &copy; 2015 Sergiy Govorukhin All Rights Reserved :) </div>
+</footer>