Mvc

README.md

@@ -1 +1,2 @@
-# library
+# library
+jdbc:h2:tcp://localhost/mem:jdbc

pom.xml

@@ -9,5 +9,62 @@
     <version>1.0-SNAPSHOT</version>
     <packaging>war</packaging>
 
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+
+        <lombok.version>1.18.16</lombok.version>
+        <HikariCP.version>4.0.1</HikariCP.version>
+        <h2.version>1.4.200</h2.version>
+        <slf4j-nop.version>2.0.0-alpha1</slf4j-nop.version>
+        <servlet.version>3.1.0</servlet.version>
+        <jsp.version>2.3.0</jsp.version>
+        <jstl.version>1.2</jstl.version>
+    </properties>
+
+
+    <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>${lombok.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>${HikariCP.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <version>${h2.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-nop</artifactId>
+            <version>${slf4j-nop.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>javax.servlet-api</artifactId>
+            <version>${servlet.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet.jsp</groupId>
+            <artifactId>javax.servlet.jsp-api</artifactId>
+            <version>${jsp.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.servlet</groupId>
+            <artifactId>jstl</artifactId>
+            <version>${jstl.version}</version>
+        </dependency>
+
+    </dependencies>
+
+
 
 </project>

src/main/java/by/gomel/library/exception/DaoPartException.java

@@ -0,0 +1,19 @@
+package by.gomel.library.exception;
+
+public class DaoPartException extends RuntimeException {
+
+    public DaoPartException() {
+    }
+
+    public DaoPartException(String message) {
+        super(message);
+    }
+
+    public DaoPartException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public DaoPartException(Throwable cause) {
+        super(cause);
+    }
+}

src/main/java/by/gomel/library/exception/InitDataBaseException.java

@@ -0,0 +1,18 @@
+package by.gomel.library.exception;
+
+public class InitDataBaseException extends RuntimeException {
+    public InitDataBaseException() {
+    }
+
+    public InitDataBaseException(String message) {
+        super(message);
+    }
+
+    public InitDataBaseException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InitDataBaseException(Throwable cause) {
+        super(cause);
+    }
+}

src/main/java/by/gomel/library/exception/TcpServerException.java

@@ -0,0 +1,18 @@
+package by.gomel.library.exception;
+
+public class TcpServerException extends RuntimeException {
+    public TcpServerException() {
+    }
+
+    public TcpServerException(String message) {
+        super(message);
+    }
+
+    public TcpServerException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public TcpServerException(Throwable cause) {
+        super(cause);
+    }
+}

src/main/java/by/gomel/novik/library/controller/AddImageServlet.java

@@ -0,0 +1,53 @@
+package by.gomel.novik.library.controller;
+
+import by.gomel.novik.library.persistance.dao.bookimpl.BookJdbcDao;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.MultipartConfig;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.Part;
+import java.io.IOException;
+import java.io.InputStream;
+
+import static by.gomel.novik.library.controller.constant.CommandConstant.*;
+
+@WebServlet(name = "AddImageServlet", urlPatterns = {"/addImage"})
+@MultipartConfig
+public class AddImageServlet extends HttpServlet {
+
+    BookJdbcDao bookJdbcDao = BookJdbcDao.getInstance();
+
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
+
+        try {
+
+            long id = Long.parseLong(request.getParameter(BOOK_ID));
+            Part part = null;
+            part = request.getPart(IMAGE);
+
+            if (part != null) {
+
+                try (InputStream inputStream = part.getInputStream()) {
+                    bookJdbcDao.addImage(id, inputStream);
+                    response.sendRedirect("/redirect?target=main&resp=Add image completed");
+
+                }
+
+            } else {
+                response.sendRedirect("/redirect?target=main&resp=Add image fail");
+
+            }
+
+        } catch (Exception e) {
+            response.sendRedirect("/redirect?target=main&resp=Add image fail");
+        }
+
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) {
+
+    }
+}

src/main/java/by/gomel/novik/library/controller/FrontCommand.java

@@ -0,0 +1,51 @@
+package by.gomel.novik.library.controller;
+
+import by.gomel.novik.library.controller.constant.SetAttribute;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+import static by.gomel.novik.library.controller.constant.CommandConstant.*;
+
+public abstract class FrontCommand implements SetAttribute {
+
+    protected ServletContext context;
+    protected HttpServletRequest request;
+    protected HttpServletResponse response;
+
+    public void init(
+            ServletContext servletContext,
+            HttpServletRequest servletRequest,
+            HttpServletResponse servletResponse) {
+        this.context = servletContext;
+        this.request = servletRequest;
+        this.response = servletResponse;
+    }
+
+    public abstract void process() throws ServletException, IOException;
+
+    protected void forward(String target) throws ServletException, IOException {
+
+            setAttribute(target, request);
+
+            target = PREFIX + target + POSTFIX;
+            RequestDispatcher dispatcher = context.getRequestDispatcher(target);
+
+            dispatcher.forward(request, response);
+
+    }
+
+
+    protected void redirectWithResp(String target, String resp) throws IOException {
+
+            target = "/redirect?target=" + target + "&resp=" + resp;
+            response.sendRedirect(target);
+
+    }
+
+
+}

src/main/java/by/gomel/novik/library/controller/FrontControllerServlet.java

@@ -0,0 +1,49 @@
+package by.gomel.novik.library.controller;
+
+import by.gomel.novik.library.controller.commands.UnknownCommand;
+import by.gomel.novik.library.controller.constant.CommandConstant;
+
+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 static by.gomel.novik.library.controller.constant.CommandConstant.*;
+
+@WebServlet(name = "FrontControllerServlet", urlPatterns = {"/front"})
+public class FrontControllerServlet extends HttpServlet {
+    @Override
+    protected void doGet(HttpServletRequest request,
+                         HttpServletResponse response) throws IOException {
+        doFrontCommand(request, response);
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
+        doFrontCommand(request, response);
+    }
+
+    private void doFrontCommand(HttpServletRequest request, HttpServletResponse response) throws IOException {
+        FrontCommand command = getCommand(request);
+        command.init(getServletContext(), request, response);
+        try {
+            command.process();
+        } catch (Exception e) {
+
+               response.sendRedirect(ERROR_PROCESS);
+
+        }
+    }
+
+    private FrontCommand getCommand(HttpServletRequest request) {
+        try {
+            Class type = Class.forName(String.format( COMMAND_PATH,
+                    request.getParameter(COMMAND)));
+            return (FrontCommand) type.asSubclass(FrontCommand.class).newInstance();
+        } catch (Exception e) {
+            return new UnknownCommand();
+        }
+    }
+}

src/main/java/by/gomel/novik/library/controller/RedirectServlet.java

@@ -0,0 +1,35 @@
+package by.gomel.novik.library.controller;
+
+
+import by.gomel.novik.library.controller.constant.SetAttribute;
+import by.gomel.novik.library.temp.CurrentDate;
+
+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;
+
+@WebServlet(name = "RedirectServlet", urlPatterns = {"/redirect"})
+public class RedirectServlet extends HttpServlet implements SetAttribute {
+
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+
+
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        String target = request.getParameter("target");
+
+        if (target == null){
+            target = "main";
+        }
+        setAttribute(target, request);
+        String path = "/" + target + ".jsp";
+        getServletContext().getRequestDispatcher(path).forward(request, response);
+    }
+
+
+}

src/main/java/by/gomel/novik/library/controller/commands/AddAuthorCommand.java

@@ -0,0 +1,37 @@
+package by.gomel.novik.library.controller.commands;
+
+import by.gomel.novik.library.controller.FrontCommand;
+import by.gomel.novik.library.model.*;
+import by.gomel.novik.library.persistance.dao.bookimpl.AuthorJdbcDao;
+
+import javax.servlet.ServletException;
+import java.io.IOException;
+
+import static by.gomel.novik.library.controller.constant.CommandConstant.*;
+
+public class AddAuthorCommand extends FrontCommand {
+
+    private static final AuthorJdbcDao AUTHOR_DAO = AuthorJdbcDao.getInstance();
+
+
+    @Override
+    public void process() throws ServletException, IOException {
+
+
+        String author = request.getParameter(AUTHOR);
+
+        if (author != null && AUTHOR_DAO.findByAuthor(author) == null) {
+
+            AUTHOR_DAO.save(new Author(author));
+
+            redirectWithResp(ADMIN_JSP, ADD_AUTHOR_OK);
+
+        } else {
+
+            redirectWithResp(ADMIN_JSP, ADD_AUTHOR_FAIL);
+
+        }
+
+
+    }
+}