Divyanshu 1710991244 F01

bean/AuthorBean.java

@@ -0,0 +1,26 @@
+package com.wipro.book.bean;
+
+public class AuthorBean {
+	private int authorCode;
+	private String authorName;
+	private long contactNumber;
+	public int getAuthorCode() {
+		return authorCode;
+	}
+	public void setAuthorCode(int authorCode) {
+		this.authorCode = authorCode;
+	}
+	public String getAuthorName() {
+		return authorName;
+	}
+	public void setAuthorName(String authorName) {
+		this.authorName = authorName;
+	}
+	public long getContactNumber() {
+		return contactNumber;
+	}
+	public void setContactNumber(long contactNumber) {
+		this.contactNumber = contactNumber;
+	}
+
+}

bean/BookBean.java

@@ -0,0 +1,39 @@
+package com.wipro.book.bean;
+
+public class BookBean {
+	private String isbn;
+	private String bookName;
+	private AuthorBean author;
+	private char bookType;
+	private float cost;
+	public String getIsbn() {
+		return isbn;
+	}
+	public void setIsbn(String isbn) {
+		this.isbn = isbn;
+	}
+	public String getBookName() {
+		return bookName;
+	}
+	public void setBookName(String bookName) {
+		this.bookName = bookName;
+	}
+	public AuthorBean getAuthor() {
+		return author;
+	}
+	public void setAuthor(AuthorBean author) {
+		this.author = author;
+	}
+	public char getBookType() {
+		return bookType;
+	}
+	public void setBookType(char bookType) {
+		this.bookType = bookType;
+	}
+	public float getCost() {
+		return cost;
+	}
+	public void setCost(float cost) {
+		this.cost = cost;
+	}
+}

dao/AuthorDao.java

@@ -0,0 +1,56 @@
+package com.wipro.book.dao;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import com.wipro.book.bean.AuthorBean;
+import com.wipro.book.util.*;
+public class AuthorDao {
+	public AuthorBean getAuthor(int authorCode) {
+		Connection conn = DBUtil.DBConnection();
+		PreparedStatement ps;
+		try {
+			ps = conn.prepareStatement("select * from author_tbl_me12 where author_code=?");
+			ps.setInt(1, authorCode);
+			ResultSet rs = ps.executeQuery();
+			AuthorBean bean = null;
+			while(rs.next()){
+				bean = new AuthorBean();
+				bean.setAuthorCode(authorCode);
+				bean.setAuthorName(rs.getString(2));
+				bean.setContactNumber(rs.getLong(3));
+			}
+			return bean;
+		}
+		catch(SQLException e) {
+			e.printStackTrace();
+		}
+		catch(NullPointerException e) {
+			System.out.println("error" + authorCode);
+		}
+		return null;
+	}
+	public AuthorBean getAuthor(String authorName) {
+		Connection conn = DBUtil.DBConnection();
+		PreparedStatement ps;
+		try {
+			ps = conn.prepareStatement("select * from author_tbl_me12 where author_name=?");
+			ps.setString(1, authorName);
+			ResultSet rs = ps.executeQuery();
+			AuthorBean bean = new AuthorBean();
+			while(rs.next()){
+				bean.setAuthorCode(rs.getInt(1));
+				bean.setAuthorName(rs.getString(2));
+				bean.setContactNumber(rs.getLong(3));
+			}
+			return bean;
+		} catch (SQLException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+
+		return null;
+	}
+}

dao/BookDao.java

@@ -0,0 +1,55 @@
+package com.wipro.book.dao;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import com.wipro.book.bean.BookBean;
+import com.wipro.book.util.DBUtil;
+
+public class BookDao {
+	public BookBean fetchBook(String isbn){
+		Connection conn = DBUtil.DBConnection();
+		PreparedStatement ps;
+		try {
+			ps = conn.prepareStatement("select * from book_tbl_me12 where ISBN=?");
+			ps.setString(1, isbn);
+			ResultSet rs = ps.executeQuery();
+			BookBean bean =null;
+			while(rs.next()){
+				bean = new BookBean();
+				bean.setIsbn(isbn);
+				bean.setBookName(rs.getString(2));
+				bean.setBookType(rs.getString(3).charAt(0));
+				bean.setAuthor( new AuthorDao().getAuthor(rs.getInt(4)));
+				bean.setCost(rs.getFloat(5));
+			}
+			return bean;
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+		catch(NullPointerException e){
+			System.out.println("error" + isbn);
+
+		}
+
+		return null;
+	}
+
+	public int createBook(BookBean book){
+		Connection conn = DBUtil.DBConnection();
+		try {
+			PreparedStatement ps = conn.prepareStatement("insert into book_tbl_me12 values(?,?,?,?,?)");
+			ps.setString(1, book.getIsbn());
+			ps.setString(2, book.getBookName());
+			ps.setString(3,((Character)book.getBookType()).toString());
+			ps.setInt(4, book.getAuthor().getAuthorCode());
+			ps.setFloat(5, book.getCost());
+			ps.execute();
+			return 1;
+		} catch (SQLException e) {
+			e.printStackTrace();
+			return 0;
+		}
+	}
+}

service/Administrator.java

@@ -0,0 +1,25 @@
+package com.wipro.book.service;
+
+import com.wipro.book.bean.BookBean;
+import com.wipro.book.dao.BookDao;
+
+public class Administrator {
+	public String addBook(BookBean bookBean) {
+		if(bookBean==null||bookBean.getBookName().equals("")||bookBean.getIsbn().equals("")||bookBean.getBookType()!='T'&&bookBean.getBookType()!='G'||bookBean.getCost()<=0||bookBean.getAuthor().getAuthorName()==null||bookBean.getAuthor().getAuthorName().equals("")){
+			return "INVALID";
+		}
+		int res = new BookDao().createBook(bookBean);
+		if(res == 1){
+			return "SUCCESS";
+
+		}
+		else{
+			return "FAILURE";
+		}
+	}
+	public BookBean viewBook(String isbn) {
+		if(isbn.equals(""))
+			return null;
+		return new BookDao().fetchBook(isbn);
+	}
+}

servlets/MainServlet.java

@@ -0,0 +1,97 @@
+package com.wipro.book.servlets;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import javax.servlet.RequestDispatcher;
+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 com.wipro.book.bean.BookBean;
+import com.wipro.book.dao.AuthorDao;
+import com.wipro.book.service.Administrator;
+
+@WebServlet("/MainServlet");
+public class MainServlet extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+
+    public MainServlet() {
+        super();
+    }
+
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+		response.getWriter().append("Served at: ").append(request.getContextPath());
+	}
+
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+		String operation = request.getParameter("operation");
+		if(operation.equals("AddBook")){
+			String result = addBook(request);
+
+			if(result.equals("SUCCESS")){
+				RequestDispatcher rd = request.getRequestDispatcher("/Menu.html");
+				rd.include(request, response);  
+			}
+			else if(result.equals("FAILURE")){
+				RequestDispatcher rd = request.getRequestDispatcher("Failure.html");
+				rd.include(request, response); 
+			}
+			else{
+				RequestDispatcher rd = request.getRequestDispatcher("Invalid.html");
+				rd.include(request, response); 
+			}
+		}
+		if(operation.equals("Search")){
+			BookBean bean = viewBook(request.getParameter("isbn"));
+			if(bean==null){
+				RequestDispatcher rd = request.getRequestDispatcher("Invalid.html");
+				rd.include(request, response);
+				return;
+			}
+		    response.setContentType("text/html");
+		    PrintWriter out = response.getWriter();
+		    out.println("<!DOCTYPE html><html><head><title>View Book</title></head><body><table>");
+		    String type="";
+		    if(bean.getBookType()=='T')
+		    	type = "Technical";
+		    else if(bean.getBookType()=='G')
+		    	type = "General";
+		    else{
+				RequestDispatcher rd = request.getRequestDispatcher("Failure.html");
+				rd.forward(request, response);
+				return;
+		    }
+
+		    out.println("<tr><td>ISBN<td>"+bean.getIsbn()+"</tr>");
+		    out.println("<tr><td>Book Name<td>"+bean.getBookName()+"</tr>");
+		    out.println("<tr><td>Book Type<td>"+type+"</tr>");
+		    out.println("<tr><td>Author Name<td>"+bean.getAuthor().getAuthorName()+"</tr>");
+		    out.println("<tr><td>Contact<td>"+bean.getAuthor().getContactNumber()+"</tr>");
+		    out.println("<tr><td>Cost<td>"+bean.getCost()+"</tr></table>");
+		    out.println("</body></html>");
+		    out.close();
+
+		}
+	}
+
+	public String addBook(HttpServletRequest request){
+		Administrator admin = new Administrator();
+		BookBean bean = new BookBean();
+		bean.setIsbn(request.getParameter("isbn"));
+		bean.setBookName(request.getParameter("bookname"));
+		bean.setBookType(request.getParameter("booktype").charAt(0));
+		bean.setAuthor(( new AuthorDao()).getAuthor(Integer.parseInt(request.getParameter("author")) ));
+		bean.setCost(Float.parseFloat(request.getParameter("cost")));
+		return admin.addBook(bean);
+	}
+
+
+	public BookBean viewBook(String isbn){
+		return new Administrator().viewBook(isbn);
+	}
+}

util/DBUtil.java

@@ -0,0 +1,22 @@
+package com.wipro.book.util;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+public class DBUtil {
+	public static Connection DBConnection() {
+		try {
+			Class.forName("oracle.jdbc.driver.OracleDriver");
+			Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@orcl.rmk.ac.in:1521:ORCL","username","password");
+			return conn;
+		}
+		catch(ClassNotFoundException e) {
+			System.out.println("Driver Not Found");
+		}
+		catch(SQLException e) {
+			System.out.println("Could not connect to database");
+			e.printStackTrace();
+		}
+		return null;
+	}
+}