Jersey - różne proste przykłady

PC37-Jersey/src/main/java/com/demo/JerseyConfig.java

@@ -8,6 +8,10 @@ public class JerseyConfig extends ResourceConfig {
 
 	public JerseyConfig() {
 		register(Hello.class);
+		register(Kontekst.class);
+		register(Parametry.class);
+		register(Kalkulator.class);
+		register(Time.class);
 	}
 	
 }

PC37-Jersey/src/main/java/com/demo/Kalkulator.java

+package com.demo;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+
+@Path("/calc")
+public class Kalkulator {
+
+	@GET
+	@Path("/{x}+{y}")
+	public long dodaj(@PathParam("x") long a, @PathParam("y") long b) {
+		return a+b;
+	}
+	
+	@GET
+	@Path("/{x}-{y}")
+	public long odejmij(@PathParam("x") long a, @PathParam("y") long b) {
+		return a-b;
+	}
+	
+	@GET
+	@Path("/{x}*{y}")
+	public long pomnoz(@PathParam("x") long a, @PathParam("y") long b) {
+		return a*b;
+	}
+	
+	@GET
+	@Path("/{x}/{y}")
+	public long podziel(@PathParam("x") long a, @PathParam("y") long b) {
+		return a/b;
+	}
+	
+}

PC37-Jersey/src/main/java/com/demo/Kontekst.java

+package com.demo;
+
+import java.util.Arrays;
+import java.util.Map;
+
+import jakarta.servlet.ServletConfig;
+import jakarta.servlet.ServletContext;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.Produces;
+import jakarta.ws.rs.core.Context;
+import jakarta.ws.rs.core.HttpHeaders;
+import jakarta.ws.rs.core.Request;
+import jakarta.ws.rs.core.SecurityContext;
+import jakarta.ws.rs.core.UriInfo;
+
+@Path("/kontekst")
+@Produces("text/plain")
+public class Kontekst {
+	@GET
+	public String info(
+		@Context UriInfo uriInfo,
+		@Context SecurityContext securityContext,
+		@Context Request restRequest,
+		@Context HttpHeaders headers,
+		@Context ServletContext servletContext,
+		@Context ServletConfig servletConfig,
+		@Context HttpServletRequest servletRequest,
+		@Context HttpServletResponse servletResponse
+	) {
+		StringBuilder b = new StringBuilder();
+		
+		b.append("UriInfo\n");
+		b.append("Base URI     : ").append(uriInfo.getBaseUri()).append('\n');
+		b.append("Absolute path: ").append(uriInfo.getAbsolutePath()).append('\n');
+		b.append("Path         : ").append(uriInfo.getPath()).append('\n');
+		
+		b.append("\nHttpHeaders\n");
+		b.append(headers.getRequestHeaders());
+
+		// Request restRequest - wiąże się z obsługą keszowania i typów zawartości
+		
+		b.append("\nServletContext\n");
+		b.append("ServlerInfo: ").append(servletContext.getServerInfo()).append('\n');
+		
+		b.append("\nServletRequest\n");
+		b.append("RemoteAddr: ").append(servletRequest.getRemoteAddr()).append('\n');
+		b.append("LocalAddr : ").append(servletRequest.getLocalAddr()).append('\n');
+		b.append("URI       : ").append(servletRequest.getRequestURI()).append('\n');
+		b.append("Parametry :\n");
+		
+		for (Map.Entry e : servletRequest.getParameterMap().entrySet()) {
+			String[] v = (String[]) e.getValue();
+			b.append(" * " + e.getKey() + " : " + Arrays.toString(v) + "\n");
+		}
+		
+		b.append("\nZalogowany wg serwletu: ").append(servletRequest.getRemoteUser()).append('\n');
+		b.append("Zalogowany wg SecurityContext: ").append(securityContext.getUserPrincipal()).append('\n');
+		
+		return b.toString();
+	}
+
+}

PC37-Jersey/src/main/java/com/demo/Parametry.java

+package com.demo;
+
+import java.time.LocalDateTime;
+import java.util.Arrays;
+
+import jakarta.ws.rs.CookieParam;
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.HeaderParam;
+import jakarta.ws.rs.MatrixParam;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.PathParam;
+import jakarta.ws.rs.Produces;
+import jakarta.ws.rs.QueryParam;
+import jakarta.ws.rs.core.NewCookie;
+import jakarta.ws.rs.core.Response;
+
+/* Przykładowe adresy z parametrami:
+
+/rest1/parametry/query?a=Ala&b=Ola&b=Ela&t=Basia&t=Kasia&t=Zosia
+/rest1/parametry/matrix;a=Ala;b=Ola;b=Ela;t=Basia;t=Kasia;t=Zosia
+ */
+
+
+@Path("/parametry")
+@Produces("text/plain")
+public class Parametry {
+
+	@GET
+	@Path("/query")
+	public String query(
+			@QueryParam("a") String a,
+			@QueryParam("b") String b,
+			@QueryParam("t") String[] t) {
+		
+		return "Parametr a = " + a
+				+ "\nParametr b = " + b
+				+ "\nTablica: " + Arrays.toString(t);
+	}
+	
+	@GET
+	@Path("/matrix")
+	public String matrix(
+			@MatrixParam("a") String a,
+			@MatrixParam("b") String b,
+			@MatrixParam("t") String[] t) {
+		
+		return "Parametr a = " + a
+				+ "\nParametr b = " + b
+				+ "\nTablica: " + Arrays.toString(t);
+	}
+	
+	// /rest1/parametry/path/Ala/123/98765qwerty@res-zta
+	@GET
+	@Path("/path/{a}/{b}/{cyfry:\\d+}{litery:\\w+}{reszta}")
+	public String pathParam(
+			@PathParam("a") String a,
+			@PathParam("b") String b,
+			@PathParam("cyfry") String cyfry,
+			@PathParam("litery") String litery,
+			@PathParam("reszta") String reszta
+		) {
+		
+		return "Parametr a = " + a
+				+ "\nParametr b = " + b
+				+ "\nCyfry: " + cyfry
+				+ "\nLitery: " + litery
+				+ "\nReszta: " + reszta;
+	}
+	
+	@GET
+	@Path("/headers")
+	public String headers(
+			@HeaderParam("accept") String accept,
+			@HeaderParam("user-agent") String agent
+		) {
+		
+		return "Accept: " + accept
+			+ "\nUser-Agent: " + agent;
+	}
+	
+	@GET
+	@Path("/cookies")
+	public String cookies(
+			@CookieParam("ciacho") String ciacho,
+			@CookieParam("JSESSIONID") String sessionId
+		) {
+		return "Ciacho: " + ciacho
+			+ "\nSesja: " + sessionId;
+	}
+	
+	@GET
+	@Path("/ustaw")
+	// ustawia ciacho
+	public Response ustawCiacho() {
+		String ciacho = LocalDateTime.now().toString();
+		return Response.ok()
+				.cookie(new NewCookie("ciacho", ciacho))
+				.type("text/plain")
+				.entity("Ustawiam ciacho na: " + ciacho)
+				.build();
+	}
+}

PC37-Jersey/src/main/java/com/demo/Time.java

+package com.demo;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.Produces;
+
+@Path("/dt")
+@Produces("text/plain")
+public class Time {
+	private LocalDateTime dt = LocalDateTime.now();
+	
+	{
+		System.out.println("Jest tworzony obiekt klasy DataICzas, dt = " + dt);
+	}
+
+	@GET
+	public LocalDateTime dt() {
+		return dt;
+	}
+
+	@Path("/date")
+	@GET
+	public LocalDate data() {
+		return dt.toLocalDate();
+	}
+	
+	@Path("/date/year")
+	@GET
+	public int year() {
+		return dt.getYear();
+	}
+
+	@Path("/date/month")
+	@GET
+	public int month() {
+		return dt.getMonthValue();
+	}
+
+	@Path("/date/day")
+	@GET
+	public int day() {
+		return dt.getDayOfMonth();
+	}
+
+	@Path("/date/wd")
+	@GET
+	public String weekday() {
+		return dt.getDayOfWeek().toString();
+	}
+
+	@Path("/date/doy")
+	@GET
+	public int doy() {
+		return dt.getDayOfYear();
+	}
+
+	@Path("/time")
+	@GET
+	public LocalTime time() {
+		return dt.toLocalTime();
+	}
+
+	@Path("/time/hour")
+	@GET
+	public int hour() {
+		return dt.getHour();
+	}
+
+	@Path("/time/minute")
+	@GET
+	public int minute() {
+		return dt.getMinute();
+	}
+
+	@Path("/time/second")
+	@GET
+	public int second() {
+		return dt.getSecond();
+	}
+
+}

PC37-Jersey/src/main/resources/application.properties

+spring.datasource.url=jdbc:postgresql://localhost:5432/sklep
+spring.datasource.username=kurs
+spring.datasource.password=abc123
+
+alx.photo_dir=/home/patryk/sklep/foto