Java EE. OSS <OSS X Users Meeting> #21 Java EE. Akihiro Nishikawa Oracle Corporation Japan. December 12, 2017

Transcription

1 Java EE OSS <OSS X Users Meeting> #21 Java EE Akihiro Nishikawa Oracle Corporation Japan December 12,

2 Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle. 2

3 Program Agenda Java Enterprise Edition (Java EE) The Road to Java EE 8 Java EE 8 Contents : JSRs and MRs Summary 3

4 Java Enterprise Edition (Java EE) 4

5 Java EE is a set of specifications 5

6 Java EE Platform Enterprise Java J2EE 1.2 Servlet, JSP, EJB, JMS Robustness J2EE 1.3 CMP, JCA Web Services J2EE 1.4 JAX-RPC Mgmt, Deployment Ease of Development Java EE 5 Annotations, EJB 3.0, JPA, JSF, JAXB, JAX-WS Lightweight Java EE 6 JAX-RS, CDI, Servlet 3.0, Web Profile, Pruning Productivity & HTML5 Java EE 7 JAX-RS 2.0, JSON-P, WebSocket, JMS 2.0, Batch Modernization & Simplification Java EE 8 Servlet 4.0, JAX-RS 2.1, JSON-B JSON-P 1.1, Security

7 Java EE APIs - Backbone of Leading Open Source Projects Web Frameworks REST Microservices Web Containers Java EE Containers PaaS 7

8 2017 Java SE Java SE Java SE Java SE Java SE J2SE J2SE Java EE Java EE Java EE Java EE J2EE J2EE J2EE J2SE JDK1.1 8

9 Java Java VM Java EE Application Server Reference Implementation Java IT 9

10 The Road to Java EE 8 10

11 Java EE 8 Enterprise Java J2EE 1.2 Servlet, JSP, EJB, JMS Robustness J2EE 1.3 CMP, JCA Web Services J2EE 1.4 JAX-RPC Mgmt, Deployment Ease of Development Java EE 5 Annotations, EJB 3.0, JPA, JSF, JAXB, JAX-WS Lightweight Java EE 6 JAX-RS, CDI, Servlet 3.0, Web Profile, Pruning Productivity & HTML5 Java EE 7 JAX-RS 2.0, JSON-P, WebSocket, JMS 2.0, Batch Modernization & Simplification Java EE 8 Servlet 4.0, JAX-RS 2.1, JSON-B JSON-P 1.1, Security

12 Java EE : : : Java EE 8 12

13 Java EE JSR Java EE 8 Platform and Web Profile Contexts and Dependency Injection 2.0 (CDI) Java API for JSON Binding 1.0 (JSON- B) Java Message Service 2.1 (JMS) Java Servlet 4.0 Java API for RESTful Web Services 2.1 (JAX-RS) Model-View-Controller 1.0 (MVC) JavaServer Faces 2.3 (JSF) Java EE Management API 2.0 Java API for JSON Processing 1.1 (JSON-P) Java EE Security API 1.0 Bean Validation

14 Java EE Community Survey Java One 2016 Java EE 8 Java EE 8 Servlet REST JSON Management JMS MVC Java EE 8 Java EE 8 JAX-RS 2.1 REST Services Servlet 4.0 HTTP/2 JSON-B 1.0 JSON-B JSON-P 1.1 JSON-P CDI 2.0 N/A Bean Validation 2.0 N/A JSF 2.3 N/A Security 1.0 N/A Management 2.0 Management Management 2.0 JMS 2.1 JMS JMS 2.1 MVC 1.0 MVC 14

15 Java EE Java EE 8 Platform and Web Profile Contexts and Dependency Injection 2.0 (CDI) Java API for JSON Binding 1.0 (JSON- B) Java Message Service 2.1 (JMS) Java Servlet 4.0 Java API for RESTful Web Services 2.1 (JAX-RS) Model-View-Controller 1.0 (MVC) JavaServer Faces 2.3 (JSF) Java EE Management API 2.0 Java API for JSON Processing 1.1 (JSON-P) Java EE Security API 1.0 Bean Validation

16 Java EE 8 Contents: JSRs and MRs 16

17 Java EE 8 Web Tier HTTP/2 CDI 17

18 Java EE 8 API Updates JSR 374 JSR 367 JSR 370 JSR 365 JSR 369 Bean JSR Validation 372 JSR 380 JSR 375 JSON-P 1.1 JSON-B 1.0 JAX-RS 2.1 CDI 2.0 Servlet 4.0 JSF 2.3 Bean Validation 2.0 Security 1.0 JSON JSON <-> Java Reactive API, Server-sent events Java SE HTTP/2 performance server push CDI WebSocket Bean Validation Java SE 8 Java SE 8 (date/time, collections) 18

19 Maintenance Releases JSR 338 Java Persistence 2.2 JSR 919 JavaMail 1.6 For Java SE 9 (GlassFish 5.0 ) Bean JSR Validation 224 JSR 67 JAX-WS 2.0 SAAJ 1.0 JSR 250 Common Annotations 1.3 JSR 222 JAXB 2.0 JSR 318 Interceptors 1.2 rev A JSR 925 JAF 1.2 JSR 356 WebSocket

20 JSON-P 20

21 JSON-P 1.1 JSON-P RFC The JavaScript Object Notation (JSON) Data Interchange Format RFC 6901 JSON Pointer RFC 6902 JSON Patch RFC 7396 JSON Merge Patch JsonObject JsonArray Java SE 8 Streams API JSONCollectors 21

22 JSON-Pointer IETF RFC 6901 JSON "/0/user/address" JsonPointer getvalue() add() remove() replace() containsvalue() 22

23 JsonArray contacts =... [ JsonPointer p = Json.createPointer("/0/phones/mobile"); JsonValue v = p.getvalue(contacts); ] { { "name":"duke", "gender":"m", "phones":{ "home":" ", "mobile":" "}}, "name":"jane", "gender":"f", "phones":{ "mobile":" }} 23

24 JsonArray contacts =... [ JsonPointer p = { Json.createPointer("/0/phones/mobile"); JsonReader reader = Json.createReader( new StringReader(" " "")); JsonValue jsonvalue = reader.readvalue(); contacts = p.replace(contacts, jsonvalue); { ] "name":"duke", "gender":"m", "phones":{ "home":" ", "mobile":" "}}, "name":"jane", "gender":"f", "phones":{ "mobile":" }} 24

25 JSON-Patch IETF RFC 6902 JSON "add", "remove", "replace", "move", "copy", "test" JsonPatchBuilder add, copy, move, remove, replace, test JsonPatch apply() tojsonarray() 25

26 JSON JsonPatchBuilder builder = Json.createPatchBuilder(); JsonPatch patch = builder.replace("0/phones/mobile", " ").remove("/1").build(); JsonArray result = patch.apply(contacts); [ ] { { "name":"duke", "gender":"m", "phones":{ "home":" ", "mobile":" "}}, "name":"jane", "gender":"f", "phones":{ "mobile":" }} 26

27 JSON-Merge Patch IETF RFC 7396 Operation Original Patch Result Replace {"a" : "b"} {"a" : "c"} {"a" : "c"} {"a" : "b"} {"a" : null} {} Add {"a" : "b"} {"b" : "c"} {"a" : "b", "b" : "c" } Remove {"a" : "b", "b" : "c" } {"a" : null} {"b" : "c"} 27

28 MergePatch Patch JsonValue source = Json.createValue("{ "color ": "blue "}"); JsonValue patch = Json.createValue("{ "color ": "red "}"); JsonMergePatch mergepatch = Json.createMergePatch(patch); JsonValue result = mergepatch.apply(source); // {"color":"red"} 28

29 MergePatch JsonValue source = Json.createValue("{ "color ": "red "}"); JsonValue target = Json.createValue("{ "color ": "blue "}"); JsonMergePatch mergepatch = Json.createMergeDiff(source, target); // {"color":"blue"} 29

30 JsonCollectors Lambda JSON Query JSON JsonArray contacts =... List<String> femalenames = contacts.getvaluesas(jsonobject.class).stream().filter(x -> "F".equals(x.getString("gender"))).map(x -> (x.getstring("name"))).collect(collectors.tolist()); 30

31 JsonCollectors JsonCollectors JSON JsonArray contacts =...; JsonArray femalenames = contacts.getvaluesas(jsonobject.class).stream().filter(x -> "F".equals(x.getString("gender"))).map(x -> (x.get("name"))).collect(jsoncollectors.tojsonarray()); 31

32 JSON-B 32

33 JSON-B 1.0 Java API for JSON Binding Java JSON / API Java à JSON JSON à Java API Annotation Runtime configuration builder JSON Binding 33

34 JSON-B 1.0 Java API for JSON Binding JsonBuilder JSON API Jsonb JSON fromjson: JSON Java tojson: Java JSON 34

35 JSON-B 1.0 Car car1 = new Car(); car1.setbrand("toyota"); car1.setmodel("prius"); car1.setstock(20); Car car2 = new Car(); car2.setbrand("tesla");... List<Car> inventory = new ArrayList<>(); inventory.add(car1); inventory.add(car2); Jsonb jsonb = JsonbBuilder.create(); String json = jsonb.tojson(inventory); [ ] { "brand" : "Toyota", "model" : "Prius", "stock" : 20 }, { "brand" : "Tesla", "model" : "Model S", "stock" : 0 } 35

36 public class Customer { private int name ) private gy.reverse) public class Customer private int id; } private String getfirstname() { return firstname; } name ) private String firstname; private String getfirstname() { return firstname; } 36

37 Null Encoding Adapters 37

38 Runtime configuration builder Jsonb jsonb = JsonbBuilder.create(); //Ordering, naming strategy, encoding, Locale,... JsonbConfig config = new JsonbConfig().withFormatting(true).withAdapters(new CarAdapter()); Jsonb jsonb = JsonbBuilder.newBuilder("myProvider"); Jsonb jsonb = JsonbBuilder.create(config); 38

39 JAX-RS 39

40 JAX-RS 2.1 Reactive Client API Server-sent events Hypermedia API enhancements JSR JSON-B HTTP PATCH 40

41 JAX-RS 2.0 Client API // WebTarget myresource = client.target(" "joe").queryparam("dpt", "1").header("some-header", "true"); Response response = myresource.request(...).get(); //... client.close(); 41

42 JAX-RS 2.0 Client API Client client = ClientBuilder.newClient(); WebTarget myresource = client.target(" Future<String> response = myresource.request(mediatype.text_plain).async().get(string.class); //... 42

43 JAX-RS 2.0 Client API Client client = ClientBuilder.newClient(); WebTarget myresource = client.target(" Future<Customer> fcustomer = myresource.request(mediatype.text_plain).async().get(new public void completed(customer customer) { // work on the customer public void failed(throwable throwable) { // Oops! } }); 43

44 JAX-RS 2.0 Orchestration 44

45 JAX-RS 2.0 (1/4) destination.path("recommended").request().header("rx-user", "Async").async().get(new InvocationCallback<List<Destination>>() public void completed(final List<Destination> recommended) { final CountDownLatch innerlatch = new CountDownLatch(recommended.size()); final Map<String, Forecast> forecasts = Collections.synchronizedMap(new HashMap<>());... 45

46 JAX-RS 2.0 (2/4)... for (final Destination dest : recommended) { forecasts.resolvetemplate("dest", dest.getdestination()).request().async().get(new InvocationCallback<Forecast>() public void completed(final Forecast forecast) { forecasts.put(dest.getdestination(), forecast); innerlatch.countdown(); } 46

47 JAX-RS 2.0 (3/4) } public void failed(final Throwable throwable) { innerlatch.countdown(); }... try { if (!innerlatch.await(10, TimeUnit.SECONDS)) { // timeout } } catch (final InterruptedException e) { // Ooops, interrupted! } 47

48 JAX-RS 2.0 (4/4) // Continue with processing } public void failed(final Throwable throwable) { // Recommendation error } // Continue... 48

49 JAX-RS 2.1 Reactive Client API CompletionStage<String> cs1 = ClientBuilder.newClient().target(" cs1.thenaccept(system.out::println); 49

50 CompletionStage API CompletionStage<String> cs1 = ClientBuilder.newClient().target(" CompletionStage<String> cs2 = ClientBuilder.newClient().target(" CompletionStage<String> concat = cs1.thencombine(cs2, String::concat); concat.thenaccept(system.out::println); 50

51 Server-Sent Events (SSE) HTTP "text/event-stream" ID 51

52 Server-Sent Events (SSE) Source : 52

53 SSE Client API SseEventSource Web Consumer InboundSseEvent 53

54 SSE Client API Client client = ClientBuilder.newClient(); WebTarget target = client.target( " ); try( SseEventSource eventsource = SseEventSource.target( target ).reconnectingevery ( 5, TimeUnit.SECONDS ).build () ) { eventsource.register( System.out::println ); //... eventsource.open(); } //... eventsource.close(); 54

55 SSE Server API SseEventSink HTTP OutboundSseEvent Sse OutboundSseEvent SseBroadcaster OutboundSseEvent 1 SseBroadcaster 55

56 SSE @Produces(MediaType.SERVER_SENT_EVENTS) public void SseEventSink Sse sse) { eventsink.send ( sse.neweventbuilder ().name ( "event-name" ).data ( String.class, "Welcome!" ).build () ); } eventsink.send( sse.newevent ( "an event" ) ); eventsink.send( sse.newevent ( "another event" ) ); eventsink.close (); 56

57 CDI 57

58 CDI CDI Core CDI for Java SE Java SE CDI API CDI for Java EE Observer Java SE 8 Stream API Lambda SPI Configurator Observer Producer Interceptor 58

59 CDI 1.1 private Event<PaymentEvent> paymentevent; // event producer paymentevent.fire(new PaymentEvent(amt)); // event consumer A public void aobserver(@observes PaymentEvent p) { //... } // event consumer B public void bobserver(@observes PaymentEvent p) { //... } 59

60 CDI private Event<PaymentEvent> paymentevent; // event producer paymentevent.fire(new PaymentEvent(amt)); // event consumer A public void PaymentEvent p) { //... } // event consumer B public void PaymentEvent p) { //... } 60

61 CDI private Event<PaymentEvent> paymentevent; // event producer CompletionStage<PaymentEvent> stage = paymentevent.fireasync(new PaymentEvent(amt)); // event consumer A public void aobserver(@observesasync PaymentEvent p) { //... } // event consumer B public void bobserver(@observesasync PaymentEvent p) { //... } 61

62 Event Observer Event paymentevent.fire(new PaymentEvent(100)); paymentevent.fireasync(new PaymentEvent(200)); Event Observer Event Observer Observer 62

63 Web Tier Servlet, HTTP/2, and JSF 63

64 HTTP/2 HTTP 1.x Head-of-Line Blocking HTTP

65 HTTP/2 1 Stream HTTP

66 HTTP/2 TCP 1 Stream 1 Headers Stream 4 Data Stream 1 Data Stream 2 Headers Stream 3 Headers Stream 2 Data 66

67 Servlet 4.0 HTTP/2 HTTP 1.1 HTTP 1.1 RFC jsp Servlet Mapping API 67

68 Server Push... PushBuilder pushbuilder = request.newpushbuilder(); pushbuilder.path( "images/myphoto.png" ).addheader( "content-type", "image/png" ).push (); 68

69 URL HttpServletMapping getmappingmatch() MappingMatch getpattern() Servlet URL getmatchvalue() URI getservletname() Servlet 69

70 @WebServlet(urlPatterns = {"", "/", "/main", "*.html", "/main/*"}, name = "MainServlet") public class MainServlet extends HttpServlet { private static final long serialversionuid = 1L; static final Logger logger = protected void doget(httpservletrequest req, HttpServletResponse resp) { HttpServletMapping httpservletmapping = req.gethttpservletmapping(); MappingMatch mappingmatch = httpservletmapping.getmappingmatch();... 70

71 Matching getservletname MainServlet getmappingmatch getmatchvalue getpattern "" CONTEXT_ROOT "" "" "/" DEFAULT / "/main" EXACT main /main "/index.html" EXTENSION index *.html "/main/hello" PATH hello /main/* 71

72 JSF 2.3 CDI managed beans Date and Time API WebSocket Ajax Bean Validation UIData UIRepeat 72

73 Bean Validation 73

74 Bean Validation 2.0 Java SE 8 Date and Time API @FutureOrPresent 74

75 Constraints Year startyear = Year.of(2016); // repeating = 8, group = = 12, group = Admin.class) private String password; String> ; // constraints with container elements Map<@Valid Account> customeraccountinfo; 75

76 Constraints (2/2) // Optional LocalDate> getenrollmentdate(); // String> customer s; 76

77 Security 77

78 Security API for Java EE Java EE API API SecurityContext HttpAuthenticationMechanism IdentityStore CDI 78

79 SecurityContext authenticate() getcallerprincipal(), getprincipalsbytype() iscallerinrole() hasaccesstowebresource() HttpServletRequest.getUserPrincipal() HttpServletRequest.isUserInRole() EJBContext.getCallerPrincipal() EJBContext.isCallerInRole() 79

80 HttpAuthenticationMechanism Servlet Web Caller Servlet JASPIC ServerAuthModule SPI Interface validaterequest() : dofilter() service() secureresponse() : dofilter() service() cleansubject() : logout() IdentityStore 80

81 IdentityStore JAAS LDAP Database Authentication Authorization validate(credential) - CredentialValidationResult getcallergroups(credentialvalidationresult) 81

82 82

83 Java Persistence 2.2 Date and Time API java.time LocalDate, LocalTime, LocalDateTime, OffsetTime, OffsetDateTime Stream Query : Stream getresultstream() TypedQuery : Stream<x> getresultstream() AttributeConverter CDI 83

84 Summary 84

85 Java EE Development has been migrated from Java.net to GitHub

86 Java EE 8 Full Profile Batch Bean Validation CDI Common Annotations Concurrency EE Connector JSON-B Dependency Injection Deployment EL JAX-RS JSON-P JavaMail Web Services Metadata Interceptors JAX-WS JSP Managed Beans WebSocket JSP Debugging JACC JASPIC JMS JTA JAXB JAXR JSTL Management EJB JAX-RPC JSF JPA Web Services Security New Update Servlet Maintenance Release 86

87 Java EE 8 Web Profile Bean Validation Dependency Injection JASPIC JSTL JTA Servlet CDI EJB Lite JSF JPA Common Annotations EL Interceptors JAX-RS JSON-P JSP Managed Beans WebSocket JSON-B JSP Debugging Security New Update Maintenance Release 87

88 Summary Final Java EE 8 was shipped! EE4J (Enterprise Eclipse for Java) project is now on going. Fore more details on EE4J, stay tuned for Ito-san s presentation! 88

89 Safe Harbor Statement The preceding is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle. 89

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