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update.jsp 1.19 KiB
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<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ page import ="java.sql.Connection" %>
<%@ page import ="java.sql.DriverManager" %>
<%@ page import ="java.sql.PreparedStatement" %>
<%@ page import ="java.sql.ResultSet" %>
<%@ page import ="java.util.UUID" %>
    
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>

	<% 
		// Parameter lesen
		UUID id = UUID.fromString(request.getParameter("id"));
		String newTitle = request.getParameter("title");
		int newYear = Integer.parseInt(request.getParameter("jahr"));
	
		Class.forName("org.postgresql.Driver");
		String url = "jdbc:postgresql://localhost/Aebi1?port=5432&user=postgres&password=123456";
		Connection c = DriverManager.getConnection(url);
	
		PreparedStatement pst= c.prepareStatement("UPDATE books SET title = ?, year = ? WHERE ID =?");
		pst.setObject(3, id);
		pst.setString(1, newTitle);
		pst.setInt(2, newYear);
		pst.execute();
		
		//wenn du ein neues Buch hinzufügst, dann bist du sofort zu dem index.jsp Seite redirect
		response.sendRedirect("index.jsp");
	
	%>

	<!--<p>New book inserted!</p>
	<p><a href="index.jsp">Go back.</a>-->
	

</body>
</html>