Latihan 5

Pembuatan koneksi dan CRUD database

src/main/java/com/latihan/web/Latihan5_Data.java

+package com.latihan.web;
+
+public class Latihan5_Data {
+	private int id_bank;
+	private String kode;
+	private String nama;
+	
+	public int getId_bank() {
+		return id_bank;
+	}
+	public void setId_bank(int id_bank) {
+		this.id_bank = id_bank;
+	}
+	public String getKode() {
+		return kode;
+	}
+	public void setKode(String kode) {
+		this.kode = kode;
+	}
+	public String getNama() {
+		return nama;
+	}
+	public void setNama(String nama) {
+		this.nama = nama;
+	}
+	
+	
+}

src/main/java/com/latihan/web/Latihan5_conncectDatabase.java

+package com.latihan.web;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class Latihan5_conncectDatabase {
+	protected static Connection initializeDatabase() throws SQLException, ClassNotFoundException{
+		
+		String dbDriver = "com.mysql.cj.jdbc.Driver";
+		String dbUrl = "jdbc:mysql://localhost/";
+		String dbName = "java_minggu_ketiga";
+		String dbUsername = "root";
+		String dbPassword = "root";
+		
+		Class.forName(dbDriver);
+		Connection con = DriverManager.getConnection(dbUrl+dbName,dbUsername,dbPassword);
+		return con;
+		
+	}
+}

src/main/java/com/latihan/web/Latihan5_deleteData.java

+package com.latihan.web;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * Servlet implementation class Latihan5_deleteData
+ */
+@WebServlet("/latihan5-deletedata")
+public class Latihan5_deleteData extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public Latihan5_deleteData() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try {
+			Connection con = Latihan5_conncectDatabase.initializeDatabase();
+			
+			PreparedStatement st = con.prepareStatement("delete from bank where id_bank = ?");
+			st.setString(1, request.getParameter("id_bank"));
+			
+			st.execute();
+			st.close();
+			con.close();
+			response.sendRedirect(request.getContextPath()+"/latihan5-tampildata");	
+		} catch (ClassNotFoundException | SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		doGet(request, response);
+	}
+
+}

src/main/java/com/latihan/web/Latihan5_editData.java

+package com.latihan.web;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * Servlet implementation class Latihan5_editData
+ */
+@WebServlet("/latihan5-editdata")
+public class Latihan5_editData extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public Latihan5_editData() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try {
+			Connection con = Latihan5_conncectDatabase.initializeDatabase();
+			
+			Statement stmt = (Statement) con.createStatement();
+			ResultSet rs = stmt.executeQuery("select * from bank where id_bank = "+Integer.valueOf(request.getParameter("id_bank")));
+			rs.next();
+			request.setAttribute("id_bank", rs.getInt("id_bank"));
+			request.setAttribute("kode", rs.getString("kode"));
+			request.setAttribute("nama", rs.getString("nama"));
+			
+			request.getRequestDispatcher("Latihan5_editData.jsp").forward(request, response);
+			
+		} catch (ClassNotFoundException | SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try {
+			Connection con = Latihan5_conncectDatabase.initializeDatabase();
+			
+			PreparedStatement st = con.prepareStatement("update bank set kode = ?, nama = ? where id_bank = ?");
+			st.setString(1, request.getParameter("kode"));
+			st.setString(2, request.getParameter("nama"));
+			st.setString(3, request.getParameter("id_bank"));
+			
+			st.executeUpdate();
+			st.close();
+			con.close();
+			response.sendRedirect(request.getContextPath()+"/latihan5-tampildata");	
+		} catch (ClassNotFoundException | SQLException e) {
+			e.printStackTrace();
+		}
+	}
+}

src/main/java/com/latihan/web/Latihan5_tambahData.java

+package com.latihan.web;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * Servlet implementation class Latihan5_tambahData
+ */
+@WebServlet("/latihan5-tambahdata")
+public class Latihan5_tambahData extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public Latihan5_tambahData() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try {
+			Connection con = Latihan5_conncectDatabase.initializeDatabase();
+			
+			PreparedStatement st = con.prepareStatement("insert into bank(kode,nama) values(?,?)");
+			st.setString(1, request.getParameter("kode"));
+			st.setString(2, request.getParameter("nama"));
+			
+			st.executeUpdate();
+			st.close();
+			con.close();
+			response.sendRedirect(request.getContextPath()+"/latihan5-tampildata");	
+		} catch (ClassNotFoundException | SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+}

src/main/java/com/latihan/web/Latihan5_tampilData.java

+package com.latihan.web;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * Servlet implementation class Latihan5_tampilData
+ */
+@WebServlet("/latihan5-tampildata")
+public class Latihan5_tampilData extends HttpServlet {
+	private static final long serialVersionUID = 1L;
+       
+    /**
+     * @see HttpServlet#HttpServlet()
+     */
+    public Latihan5_tampilData() {
+        super();
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		try {
+			Connection con = Latihan5_conncectDatabase.initializeDatabase();
+			
+			Statement stmt = (Statement) con.createStatement();
+			ResultSet rs = stmt.executeQuery("select * from bank");
+			
+			List<Latihan5_Data> bankList = new ArrayList<Latihan5_Data>();
+
+				while(rs.next()) {
+					Latihan5_Data bank = new Latihan5_Data();
+					bank.setId_bank(rs.getInt("id_bank"));
+					bank.setKode(rs.getString("kode"));
+					bank.setNama(rs.getString("nama"));
+					bankList.add(bank);
+				}
+			request.setAttribute("bankList", bankList);
+			request.getRequestDispatcher("Latihan5_tampilData.jsp").forward(request, response);
+			
+		} catch (ClassNotFoundException | SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+	/**
+	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
+	 */
+	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+		// TODO Auto-generated method stub
+		doGet(request, response);
+	}
+
+}

src/main/webapp/Latihan4_login.jsp

@@ -16,7 +16,7 @@
   color: white;
 }
 </style>
-<title>Insert title here</title>
+<title>Login</title>
 </head>
 <body>
 <form action="latihan4-login" method="post">

src/main/webapp/Latihan5_editData.jsp

+<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
+    pageEncoding="ISO-8859-1"%>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<style type="text/css">
+.button{
+  padding: 10px 27px;
+  text-align: center;
+  font-size: 10px;
+  cursor: pointer;
+  }
+.yellow {
+  background-color: #e9f018;
+  color: black;
+}
+</style>
+<title>Edit Data</title>
+</head>
+<body>
+<form action="latihan5-editdata" method="post">
+<input name="id_bank" type="hidden" value="${id_bank}">
+<table style="border: 1px solid; margin: auto;">
+<tr>
+<th colspan="2" style="padding: 10px">Edit Data</th>
+</tr>
+
+<tr>
+<td><label>Kode</label></td>
+<td>: <input name = "kode" type = "text" value="${kode}"></td>
+</tr>
+<tr>
+<td><label>Nama</label></td>
+<td>: <input name = "nama" type = "text" value = "${nama}"></td>
+</tr>
+<tr>
+<th colspan="2" style="padding: 10px"><button class="button yellow" type = "submit">Edit</button></th>
+</tr>
+</table>
+</form>
+</body>
+</html>
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src/main/webapp/Latihan5_tambahData.jsp

+<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
+    pageEncoding="ISO-8859-1"%>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<style type="text/css">
+.button{
+  padding: 10px 27px;
+  text-align: center;
+  font-size: 10px;
+  cursor: pointer;
+  }
+.blue {
+  background-color: #188bf0;
+  color: white;
+}
+</style>
+<title>Tambah Data</title>
+</head>
+<body>
+<form action="latihan5-tambahdata" method="post">
+<table style="border: 1px solid; margin: auto;">
+<tr>
+<th colspan="2" style="padding: 10px">Tambah Data</th>
+</tr>
+
+<tr>
+<td><label>Kode</label></td>
+<td>: <input name = "kode" type = "text"></td>
+</tr>
+<tr>
+<td><label>Nama</label></td>
+<td>: <input name = "nama" type = "text"></td>
+</tr>
+<tr>
+<th colspan="2" style="padding: 10px"><button class="button blue" type = "submit">Tambah</button></th>
+</tr>
+</table>
+</form>
+</body>
+</html>
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src/main/webapp/Latihan5_tampilData.jsp

+<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
+    pageEncoding="ISO-8859-1"%>
+<%@ page import = "java.util.ArrayList"%>
+<%@ page import = "java.util.List"%>
+<%@ page import = "com.latihan.web.Latihan5_Data" %>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<style>
+table, td, th {
+  border: 1px solid;
+  padding: 5px;
+}
+</style>
+<title>Data Bank</title>
+</head>
+<body>
+<table style="margin: auto; border-collapse: collapse;">
+<tr>
+<th colspan="5" style="padding: 10px">Data Bank | <a href="Latihan5_tambahData.jsp">Tambah Data</a></th>
+</tr>
+<tr>
+<th>ID BANK</th>
+<th>KODE</th>
+<th>NAMA</th>
+<th>ACTION</th>
+</tr>
+
+<% List<Latihan5_Data> bankList = (ArrayList<Latihan5_Data>)request.getAttribute("bankList"); 
+   for (Latihan5_Data bank : bankList){ %>
+	   <tr>
+			<td><%= bank.getId_bank() %></td>
+			<td><%= bank.getKode() %></td>
+			<td><%= bank.getNama() %></td>
+			<td><a href="http://localhost:8080/LatihanJavaServlet_dioharvandy/latihan5-editdata?id_bank=<%= bank.getId_bank() %>">Edit</a> | 
+			    <a href="http://localhost:8080/LatihanJavaServlet_dioharvandy/latihan5-deletedata?id_bank=<%= bank.getId_bank() %>" onclick="return confirm('Delete This Item?');">Delete</a></td>
+	   </tr>
+ <%}%>
+</table>
+</body>
+</html>
\ No newline at end of file