lab sheet 4.2/4.3

labsheet4.2/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/classes" path="src">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-13">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

labsheet4.2/.gitignore

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+/build/
+/target/

labsheet4.2/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>labsheet4.2</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.common.project.facet.core.builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
+		<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
+		<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
+		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
+	</natures>
+</projectDescription>

labsheet4.2/.settings/.jsdtscope

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry excluding="**/bower_components/*|**/node_modules/*|**/*.min.js" kind="src" path="WebContent"/>
+	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.WebProject">
+		<attributes>
+			<attribute name="hide" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/>
+	<classpathentry kind="output" path=""/>
+</classpath>

labsheet4.2/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=13
+org.eclipse.jdt.core.compiler.compliance=13
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=13

labsheet4.2/.settings/org.eclipse.m2e.core.prefs

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+activeProfiles=
+eclipse.preferences.version=1
+resolveWorkspaceProjects=true
+version=1

labsheet4.2/.settings/org.eclipse.wst.common.component

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+<?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
+
+    <wb-module deploy-name="lab4-0.0.1-SNAPSHOT">
+        <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>
+
+        <wb-resource deploy-path="/" source-path="/WebContent" tag="defaultRootSource"/>
+
+        <wb-resource deploy-path="/WEB-INF/classes" source-path="/src"/>
+
+        <property name="java-output-path" value="/item/build/classes"/>
+        <property name="context-root" value="lab4"/>
+
+    </wb-module>
+
+</project-modules>

labsheet4.2/.settings/org.eclipse.wst.common.project.facet.core.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <fixed facet="wst.jsdt.web"/>
+  <fixed facet="java"/>
+  <fixed facet="jst.web"/>
+  <installed facet="java" version="13"/>
+  <installed facet="jst.web" version="3.0"/>
+  <installed facet="wst.jsdt.web" version="1.0"/>
+</faceted-project>

labsheet4.2/.settings/org.eclipse.wst.jsdt.ui.superType.container

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+org.eclipse.wst.jsdt.launching.baseBrowserLibrary

labsheet4.2/.settings/org.eclipse.wst.jsdt.ui.superType.name

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+Window

labsheet4.2/.settings/org.eclipse.wst.validation.prefs

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+disabled=06target
+eclipse.preferences.version=1

labsheet4.2/My Training/NEW FOLDER/labsheet4.2/target/m2e-wtp/web-resources/.gitignore

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+/META-INF/

labsheet4.2/WebContent/META-INF/MANIFEST.MF

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+Manifest-Version: 1.0
+Class-Path: 
+

labsheet4.2/WebContent/itemps.jsp

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+<%@page import="java.sql.DriverManager" %>
+<%@page import="java.sql.Connection" %>
+<%@page import="com.item" %>
+<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
+    pageEncoding="ISO-8859-1"%>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<title>Insert title here</title>
+</head>
+<body>
+<%
+	if (request.getParameter("itemCode") != null) 
+	{ 
+	 item itemObj = new item(); 
+	 itemObj.connect();//For testing the connect method
+	}
+%>
+</body>
+</html>

labsheet4.2/WebContent/items.jsp

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+<%@page import="com.Item"%>
+<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
+	pageEncoding="ISO-8859-1"%>
+<%
+	//Insert item---------------------------------
+if (request.getParameter("itemCode") != null) {
+	Item itemObj = new Item();
+	String stsMsg = itemObj.insertItem(request.getParameter("itemCode"), request.getParameter("itemName"),
+	request.getParameter("itemPrice"), request.getParameter("itemDesc"));
+	session.setAttribute("statusMsg", stsMsg);
+}
+//Delete item----------------------------------
+if (request.getParameter("itemID") != null) {
+	Item itemObj = new Item();
+	String stsMsg = itemObj.deleteItem(request.getParameter("itemID"));
+	session.setAttribute("statusMsg", stsMsg);
+}
+%>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<link rel="stylesheet" href="Views/bootstrap.min.css">
+
+<title>Items Management</title>
+</head>
+<body>
+
+	<div class="container">
+		<div class="row">
+			<div class="col">
+				<h1>Items Management</h1>
+				<form method="post" action="items.jsp">
+
+				Item code:    <input name="itemCode" type="text" class="form-control"><br>
+				Item name:     <input name="itemName" type="text" class="form-control"><br>
+				Item price:     <input name="itemPrice" type="text" class="form-control"><br>
+				Item description: <input name="itemDesc" type="text" class="form-control"><br>
+				<input name="btnSubmit" type="submit" value="Save" class="btn btn-outline-success"> <br><br>	
+
+					<div class="alert alert-info">
+						<%
+							out.print(session.getAttribute("statusMsg"));
+						%>
+					</div>
+				</form>
+				<br>
+				<%
+					Item itemObj = new Item();
+				out.print(itemObj.readItems());
+				%>
+
+			</div>
+		</div>
+	</div>
+
+</body>
+</html>
+

labsheet4.2/pom.xml

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+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.PAF</groupId>
+  <artifactId>lab4</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>war</packaging>
+  <build>
+    <sourceDirectory>src</sourceDirectory>
+    <plugins>
+      <plugin>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.8.0</version>
+        <configuration>
+          <release>13</release>
+        </configuration>
+      </plugin>
+      <plugin>
+        <artifactId>maven-war-plugin</artifactId>
+        <version>3.2.3</version>
+        <configuration>
+          <warSourceDirectory>WebContent</warSourceDirectory>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+  <dependencies>
+  	<dependency>
+  		<groupId>mysql</groupId>
+  		<artifactId>mysql-connector-java</artifactId>
+  		<version>8.0.23</version>
+  	</dependency>
+  </dependencies>
+</project>

labsheet4.2/src/com/Item.java

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+package com;
+
+import java.sql.*;
+
+public class Item {
+
+	public Connection connect() {
+		Connection con = null;
+
+		try {
+			Class.forName("com.mysql.jdbc.Driver");
+			con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/items", "root", "root");
+			// For testing
+			System.out.print("Successfully connected");
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+
+		return con;
+	}
+
+	public String insertItem(String code, String name, String price, String desc) {
+		String output = "";
+		try {
+			Connection con = connect();
+			if (con == null) {
+				return "Error while connecting to the database";
+			}
+			// create a prepared statement
+			String query = " insert into items(itemID,itemCode,itemName,itemPrice,itemDesc)"
+					+ " values (?, ?, ?, ?, ?)";
+			PreparedStatement preparedStmt = con.prepareStatement(query);
+			// binding values
+			preparedStmt.setInt(1, 0);
+			preparedStmt.setString(2, code);
+			preparedStmt.setString(3, name);
+			preparedStmt.setDouble(4, Double.parseDouble(price));
+			preparedStmt.setString(5, desc);
+			// execute the statement
+			preparedStmt.execute();
+			con.close();
+			output = "Inserted successfully";
+		} catch (Exception e) {
+			output = "Error while inserting";
+			System.err.println(e.getMessage());
+		}
+		return output;
+	}
+
+	public String deleteItem(String itemID)
+	{ 
+	 String output = ""; 
+	try
+	 { 
+	 Connection con = connect(); 
+	 if (con == null) 
+	 { 
+	 return "Error while connecting to the database for deleting."; 
+	 } 
+	 // create a prepared statement
+	 String query = "delete from items where itemID=?"; 
+	 PreparedStatement preparedStmt = con.prepareStatement(query); 
+	 // binding values
+	 preparedStmt.setInt(1, Integer.parseInt(itemID)); 
+
+	 // execute the statement
+	 preparedStmt.execute(); 
+	 con.close(); 
+	 output = "Deleted successfully"; 
+	 } 
+	catch (Exception e) 
+	 { 
+	 output = "Error while deleting the item."; 
+	 System.err.println(e.getMessage()); 
+	 } 
+	return output; 
+	}
+
+	public String readItems()
+	{ 
+	 String output = ""; 
+	try
+	 { 
+	 Connection con = connect(); 
+	 if (con == null) 
+	 { 
+	 return "Error while connecting to the database for reading."; 
+	 } 
+	 // Prepare the html table to be displayed
+	 output = "<table border='1' table class=\"table table-dark table-hover\"><tr><th>Item Code</th>" 
+	 +"<th>Item Name</th><th>Item Price</th>"
+	 + "<th>Item Description</th>" 
+	 + "<th>Update</th><th>Remove</th></tr>"; 
+	 String query = "select * from items"; 
+	 Statement stmt = con.createStatement(); 
+	 ResultSet rs = stmt.executeQuery(query); 
+	 // iterate through the rows in the result set
+	 while (rs.next()) 
+	 { 
+	 String itemID = Integer.toString(rs.getInt("itemID")); 
+	 String itemCode = rs.getString("itemCode"); 
+	 String itemName = rs.getString("itemName"); 
+	 String itemPrice = Double.toString(rs.getDouble("itemPrice")); 
+	 String itemDesc = rs.getString("itemDesc"); 
+	 // Add a row into the html table
+	 output += "<tr><td>" + itemCode + "</td>"; 
+	 output += "<td>" + itemName + "</td>"; 
+	 output += "<td>" + itemPrice + "</td>"; 
+	output += "<td>" + itemDesc + "</td>";
+	 // buttons
+	 output += "<td><input name='btnUpdate' " 
+	 + "<input name='btnUpdate' type='submit' value='Update' class='btn btn-primary'> </td>"
+	 + "<td><form method='post' action='items.jsp'>"
+	 + "<input name='btnRemove' type='submit' value='Remove' class='btn btn-danger'>" 
+	 + "<input name='itemID' type='hidden' " 
+	 + " value='" + itemID + "'>" + "</form></td></tr>"; 
+	 } 
+	 con.close(); 
+	 // Complete the html table
+	 output += "</table>"; 
+	 } 
+	catch (Exception e) 
+	 { 
+	 output = "Error while reading the items."; 
+	 System.err.println(e.getMessage()); 
+	 } 
+	return output; 
+	}
+}
+
+