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@POST @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) public Response createUser(User user) userService.save(user); return Response.status(Response.Status.CREATED).entity(user).build();
// 1. Simple Servlet @WebServlet("/hello") public class HelloServlet extends HttpServlet protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException resp.setContentType("text/html"); PrintWriter out = resp.getWriter(); out.println("<h1>Hello from Java Server!</h1>"); out.println("Time: " + new java.util.Date());
static HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:mysql://localhost:3306/mydb"); config.setUsername("root"); config.setPassword("password"); config.setMaximumPoolSize(10); dataSource = new HikariDataSource(config);
@GET @Produces(MediaType.APPLICATION_JSON) public List<User> getUsers() return userService.getAllUsers();
public static Connection getConnection() throws SQLException return dataSource.getConnection();
// 4. REST API using Jersey @Path("/api/users") public class UserResource
HttpSession session = req.getSession(); String username = req.getParameter("username"); String password = req.getParameter("password"); if (authenticate(username, password)) session.setAttribute("user", username); session.setMaxInactiveInterval(1800); // 30 minutes resp.sendRedirect("dashboard.jsp"); else resp.sendRedirect("login.html?error=true");
@POST @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) public Response createUser(User user) userService.save(user); return Response.status(Response.Status.CREATED).entity(user).build();
// 1. Simple Servlet @WebServlet("/hello") public class HelloServlet extends HttpServlet protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException resp.setContentType("text/html"); PrintWriter out = resp.getWriter(); out.println("<h1>Hello from Java Server!</h1>"); out.println("Time: " + new java.util.Date()); java server programming black book pdf
static HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:mysql://localhost:3306/mydb"); config.setUsername("root"); config.setPassword("password"); config.setMaximumPoolSize(10); dataSource = new HikariDataSource(config); @POST @Consumes(MediaType
@GET @Produces(MediaType.APPLICATION_JSON) public List<User> getUsers() return userService.getAllUsers(); HttpServletResponse resp) throws ServletException
public static Connection getConnection() throws SQLException return dataSource.getConnection();
// 4. REST API using Jersey @Path("/api/users") public class UserResource
HttpSession session = req.getSession(); String username = req.getParameter("username"); String password = req.getParameter("password"); if (authenticate(username, password)) session.setAttribute("user", username); session.setMaxInactiveInterval(1800); // 30 minutes resp.sendRedirect("dashboard.jsp"); else resp.sendRedirect("login.html?error=true");
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