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‎Showcases/GroupDocs.Comparison-for-Java-using-Servlets/.gitignore‎

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/target/
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.idea/
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*.iml
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.DS_Store
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Thumbs.db
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*.lic
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‎Showcases/GroupDocs.Comparison-for-Java-using-Servlets/pom.xml‎

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<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.groupdocs.ui</groupId>
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<artifactId>comparison-servlets</artifactId>
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<packaging>war</packaging>
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<version>1.0-SNAPSHOT</version>
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<name>comparison-servlets Maven Webapp</name>
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<url>http://maven.apache.org</url>
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<properties>
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<maven.compiler.source>8</maven.compiler.source>
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<maven.compiler.target>8</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>javax</groupId>
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<artifactId>javaee-api</artifactId>
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<version>7.0</version>
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</dependency>
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<dependency>
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<groupId>com.groupdocs</groupId>
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<artifactId>groupdocs-comparison</artifactId>
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<version>3.2.0</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.eclipse.jetty</groupId>
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<artifactId>jetty-maven-plugin</artifactId>
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<version>9.3.12.v20160915</version>
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</plugin>
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</plugins>
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</build>
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</project>

‎Showcases/GroupDocs.Comparison-for-Java-using-Servlets/src/main/java/com/groupdocs/ui/comparison/Compare.java‎

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package com.groupdocs.ui.comparison;
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import com.groupdocs.comparison.Comparison;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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@WebServlet("/compare")
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public class Compare extends HttpServlet {
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protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// It is assumed that we are redirected here by Upload servlet
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// here so we already know paths of source, target and comparison-type
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Path source = (Path) request.getSession().getAttribute("source");
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Path target = (Path) request.getSession().getAttribute("target");
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int comparisonType = (int) request.getSession().getAttribute("comparison-type");
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Path result = Files.createTempFile("groupdocs-comparison-result-", ".docx");
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// Now do the comparison
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Comparison comparison = new Comparison();
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try {
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comparison.compare(source.toString(), target.toString(), result.toString(), comparisonType);
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// Save path to result file for later use
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request.getSession().setAttribute("result", result);
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} catch (Exception x) {
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throw new ServletException(x);
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}
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// Redirect to Download servlet
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response.sendRedirect("download");
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}
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}

‎Showcases/GroupDocs.Comparison-for-Java-using-Servlets/src/main/java/com/groupdocs/ui/comparison/Download.java‎

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package com.groupdocs.ui.comparison;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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@WebServlet("/download")
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public class Download extends HttpServlet {
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// It is assumed that we are redirected here by Upload servlet
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// here so we already know path to result file
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Path result = (Path) request.getSession().getAttribute("result");
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if (result == null) {
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response.sendError(404);
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return;
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}
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// Let the user download comparison results
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response.setContentType("application/octet-stream");
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response.setHeader("Content-disposition", "attachment; filename=" + result.getFileName());
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Files.copy(result, response.getOutputStream());
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}
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}

‎Showcases/GroupDocs.Comparison-for-Java-using-Servlets/src/main/java/com/groupdocs/ui/comparison/Upload.java‎

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package com.groupdocs.ui.comparison;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.MultipartConfig;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.*;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.StandardCopyOption;
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@WebServlet("/upload")
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@MultipartConfig
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public class Upload extends HttpServlet {
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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HttpSession session = request.getSession(true);
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// Save source file to temporary folder and keep the path remembered.
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Part source = request.getPart("source");
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if (source != null) {
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Path path = Files.createTempFile("groupdocs-comparison-source-", source.getSubmittedFileName());
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Files.copy(source.getInputStream(), path, StandardCopyOption.REPLACE_EXISTING);
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session.setAttribute("source", path);
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}
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// Save target file to temporary folder and keep the path remembered.
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Part target = request.getPart("target");
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if (target != null) {
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Path path = Files.createTempFile("groupdocs-comparison-target", target.getSubmittedFileName());
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Files.copy(target.getInputStream(), path, StandardCopyOption.REPLACE_EXISTING);
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session.setAttribute("target", path);
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}
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// Save the value of Comparison Type for later use.
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int comparisonType = 5;
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try {
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comparisonType = Integer.parseInt(request.getParameter("comparison-type"));
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} catch (Exception x) {
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// Ignore
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}
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request.getSession().setAttribute("comparison-type", comparisonType);
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// Redirect to Compare servlet
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response.sendRedirect("compare");
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}
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}

‎Showcases/GroupDocs.Comparison-for-Java-using-Servlets/src/main/webapp/index.jsp‎

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<!DOCTYPE html>
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<html>
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<head>
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<title>GroupDocs.Comparison for Java</title>
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<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css"/>
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</head>
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<body>
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<!-- Minimal HTML form
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<form action="upload" method="post" enctype="multipart/form-data">
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<input type="file" name="source"/>
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<input type="file" name="target"/>
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<select name="comparison-type">
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<option value="2">Words</option>
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<option value="3">Cells</option>
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<option value="4">Pdf</option>
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<option value="1">Slides</option>
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<option value="0">Text</option>
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</select>
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<button type="submit">Compare &amp; Download Results</button>
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</form>
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-->
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<form action="upload" method="post" enctype="multipart/form-data">
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<div style="padding: 20px 21px 0px 21px;">
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<font size="5">GroupDocs.Comparison for Java</font>&nbsp; Compare any document
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<hr/>
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<div style="padding: 20px 20px 20px 20px; text-align: left;">
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<div class="alert alert-danger" style="display: none;" id="labelFailed">
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</div>
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<div class="alert alert-success" style="display: none;" id="labelCompleted">
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</div>
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<div class="panel panel-primary" style="width: 100%;">
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<div class="panel-heading">
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<h4><b>[::] GroupDocs.Comparison for Java</b></h4>
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</div>
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<div class="panel-body">
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<table width="100%">
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<tr>
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<td>
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<div style="padding: 20px;">
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<div class="panel panel-info">
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<div class="panel-heading" style="text-transform: uppercase;">
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<b>Source file</b>
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</div>
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<div class="panel-body">
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<div class="input-group">
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<input type="file" name="source" width="100%" class="input"/>
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</div>
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</div>
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</div>
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</div>
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</td>
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<td>
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<div style="padding: 20px;">
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<div class="panel panel-info">
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<div class="panel-heading" style="text-transform: uppercase;">
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<b>Target file</b>
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</div>
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<div class="panel-body">
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<div class="input-group">
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<input type="file" name="target" width="100%" class="input"/>
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</div>
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</div>
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</div>
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</div>
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</td>
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</tr>
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</table>
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<div style="text-align: center;">
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<label>
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Comparison Type
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<select name="comparison-type">
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<option value="2">Words</option>
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<option value="3">Cells</option>
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<option value="4">Pdf</option>
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<option value="1">Slides</option>
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<option value="0">Text</option>
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</select>
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</label>
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<br/>
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<input type="submit" value="Compare &amp; Download Results" class="btn btn-success"/>
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</div>
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</div>
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</div>
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</div>
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</div>
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</form>
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</body>
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</html>

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