Java EEアクションベースMVC入門 #jjug_ccc #ccc_cd4

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ͜ͷηογϣϯʹ͍ͭͯ ! ʮJava EE͸Struts/Seasar2ͷ୅ସͱͯ͠  ʰ࢖͑Δʱͷ͔ʁʯͱ͍͏ٙ໰ʹ͓౴͑͠·͢ ! Ϗϡʔͱͯ͠ThymeleafΛ࢖ͬͯ·͢ʂ ! ιʔε͸GitHubʹ͋Γ·͢ ! https://github.com/MasatoshiTada/jjug-action-based-mvc ! ຊεϥΠυͷίʔυ͸εϖʔεͷ౎߹্ɺҰ෦লུ͍ͯ͠ ·͢ɻGitHubͷίʔυ͕ਖ਼͍͠Ͱ͢ 2

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ࣗݾ঺հ ! ଟాਅහʢͨͩ·͞ͱ͠ʣ ! (ג)ΧαϨΞϧ ! GlassFish User Group Japan ! Java EE/Spring/SwiftͳͲͷݚमτϨʔφʔ ! JJUG CCC͸5ճ࿈ଓ5ճ໨ͷग़৔ ! Twitterɿ@suke_masa ! ͸ͯͳϒϩάɿJava EE ࣄ࢝Ίʂ 3

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. MVC 1.0Ͱ࢖͑ΔϏϡʔٕज़ ! MVC 1.0ެࣜ ! JSPɺFacelets ! Ozarkಠࣗ ! ThymeleafɺMustacheɺFreemarkerɺ  HandlerbarsɺVelocityɺAsciiDocɺ౳ 16 ViewEngineΠϯλϑΣʔεΛ ࣮૷͢Ε͹ଞͷϏϡʔ΋ར༻Մೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ThymeleafΛ࢖ͬͯΈΑ͏ʂ 18 ! ϐϡΞͳHTMLͰॻ͚Δʂ ! ϏϡʔͱϩδοΫ͕׬શʹ෼཭Ͱ͖Δʂ ! JavaScriptͱͷ૬ੑ͕ྑ͍ʂ ! σϑΥϧτͰΤεέʔϓͯ͘͠ΕΔʂ ! ϦϯΫࣜ΍ϝοηʔδͷࠃࡍԽ΋ศརʂ ! http://www.thymeleaf.org/doc/tutorials/2.1/ usingthymeleaf_ja.html (by @bufferings͞Μʂ)

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ೋॏαϒϛοτ๷ࢭ͕ແ͍ཧ༝ ! ΤΩεύʔτάϧʔϓͷٞ࿦Ͱɺ  ʮΫϥΠΞϯταΠυͰରԠ͢΂͖ʯ ͱҙݟ͕Ұகͨͨ͠Ί ! https://java.net/projects/mvc-spec/lists/jsr371- experts/archive/2015-07/message/2 ! Spring MVCʹ΋͜ͷػೳ͸ແ͍ 20

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ೋॏαϒϛοτΛ๷ࢭ͢Δํ๏ ! γεςϜΤϯδχΞAdvent Calender ! http://qiita.com/syobochim/items/ 120109315f671918f28d ! TERASOLUNAΨΠυϥΠϯ ! http://terasolunaorg.github.io/guideline/ 5.1.0.RELEASE/ja/ArchitectureInDetail/ DoubleSubmitProtection.html 21

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ४උɿJAX-RSͷ༗ޮԽ 22 @ApplicationPath("/api") public class MyApplication extends Application { } ApplicationΛܧঝ ΞϊςʔγϣϯΛ෇Ճ jjug-mvc10/src/main/java/com/example/rest/MyApllication.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. جຊతͳίϯτϩʔϥʔ 23 @Path("/employee") public class EmployeeController { @GET @Path("/index") @Controller public String index() { return "employee/index.html"; } } Ϗϡʔͷύε(֦ுࢠඞਢ) ίϯτϩʔϥʔϝιου Ͱ͋Δ͜ͱΛࣔ͢ URL΍HTTPϝιου ͱͷରԠ෇͚ ※ࣼମ෦෼͕MVC1.0ͷػೳ jjug-mvc10/src/main/java/com/example/rest/controller/EmployeeController.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ೖྗ஋Λड͚औΔϑΥʔϜΫϥε 24 public class EmployeeIdForm { @QueryParam("id") @NotBlank @Pattern(regexp = "[1-9][0-9]*") private String id; // setter/getter } ΫΤϦύϥϝʔλ"id" Λऔಘ͢Δ Bean Validationͷ ݕূΞϊςʔγϣϯ jjug-mvc10/src/main/java/com/example/rest/form/EmployeeIdForm.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Ϗϡʔʹ஋Λ౉͢ 25 public class EmployeeController { @Inject private Models models; @GET @Path("/result") @Controller @ValidateOnExecution(type=ExecutableType.NONE) public String result(…) { models.put("employee", employee); return "employee/result.html"; } ஋ͷೖΕ෺ ʢMap + Iteratorʣ ϏϡʔͰ ࢀর͢Δ஋ ※ࣼମ෦෼͕MVC1.0ͷػೳ jjug-mvc10/src/main/java/com/example/rest/controller/EmployeeController.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. όϦσʔγϣϯ 27 public class EmployeeController { @Inject private BindingResult br; @GET @Path("/result") @Controller @ValidateOnExecution(type=ExecutableType.NONE) public String result( @Valid @BeanParam EmployeeIdForm form) { if (br.isFailed()) { models.put("bindingResult", br); return "employee/index.html"; // ೖྗը໘΁ Τϥʔϝοηʔδͷ ೖΕ෺ ݕূͷ ༗ޮԽ Τϥʔ࣌ͷॲཧ ※ࣼମ෦෼͕MVC1.0ͷػೳ jjug-mvc10/src/main/java/com/example/rest/controller/EmployeeController.java

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μϛʔͷϝοηʔδ

BindingResult͔Β ϝοηʔδΛऔಘ jjug-mvc10/src/main/webapp/WEB-INF/views/employee/index.html

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Τϥʔϝοηʔδͷࢦఆ 30 public class EmployeeIdForm { @QueryParam("id") @NotBlank(message = "{id.notblank}") @Pattern(regexp = "[1-9][0-9]*", message = "{id.pattern}") private String id; // setter/getter {}Λ෇͚ͯ ϝοηʔδͷΩʔΛࢦఆ jjug-mvc10/src/main/java/com/example/rest/form/EmployeeIdForm.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ExceptionMapperΫϥε 34 @Provider public class ExceptionMapper implements javax.ws.rs.ext.ExceptionMapper { public Response toResponse( Exception exception) { // Τϥʔը໘΁ͷભҠͳͲ } } @ProviderΛ๨Εͣʹ εϩʔ͞Εͨྫ֎͸ Ҿ਺Ͱड͚औΔ ExceptionMapper Λ࣮૷ jjug-mvc10/src/main/java/com/example/rest/exception/mapper/ExceptionMapper.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ͦͷଞͷػೳ ! ηΩϡϦςΟʢCSRFରࡦɺXSSରࡦʣ ! ϑΝΠϧΞοϓϩʔυɺμ΢ϯϩʔυ ! MvcContextʢURLࢦఆ͕؆୯ʹʣ ! HTMLΞϓϦͱRESTͷࠞ߹ʢϋΠϒϦουΫϥεʣ ! ৄࡉ͸GlassFishษڧձͷࢿྉ΁ ! http://www.slideshare.net/masatoshitada7/java-ee-8mvc-10 35

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ͜͜·Ͱͷ·ͱΊ ! MVC 1.0 + ThymeleafͰɺStruts/Seasar2ͷػೳ ͸΄΅ΧόʔͰ͖Δ ! ͔͠΋ɺΑΓ؆୯ʹʂΑΓηΩϡΞʹʂ ! ೋॏαϒϛοτ๷ࢭͱϑΥʔϜόΠϯσΟϯά ͸ɺࣗ෼Ͱ࣮૷͢Δඞཁ͋Γ ! MVC 1.0ࣗମͷػೳ͸γϯϓϧͰɺطଘͷJava EEͷػೳΛϑϧ׆༻͍ͯ͠Δ 36

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Jersey MVCͷجຊతͳ࢖͍ํᶃ ! ApplicationαϒΫϥεʹMvcFeatureΫϥ εΛొ࿥͢Δ 41 @ApplicationPath("/api") public class MyApplication extends ResourceConfig { public MyApplication() { register(MvcFeature.class); property(MvcFeature.TEMPLATE_BASE_PATH, "/WEB-INF/views/"); packages(true, "com.example.rest"); } } jjug-jersey-mvc/src/main/java/com/example/rest/MyApplication.java ※ࣼମ෦෼͕Jersey MVCͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Jersey MVCͷجຊతͳ࢖͍ํᶄ ! ίϯτϩʔϥʔϝιουͰViewableΛ໭ Γ஋ʹ͢Δ 42 @Path("/employee") public class EmployeeController { @GET @Path("/index") public ThymeleafViewable index(…) { return new ThymeleafViewable( "employee/index.html"); } } ViewableͷαϒΫϥε ͱͯࣗ͠࡞ͨ͠΋ͷ jjug-jersey-mvc/src/main/java/com/example/rest/controller/EmployeeControler.java ※ࣼମ෦෼͕Jersey MVCͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Jersey MVCͷجຊతͳ࢖͍ํᶅ ! ViewableίϯετϥΫλͷୈ2Ҿ਺Ͱ Ϗϡʔʹ஋Λ౉͢ 43 @Path("/employee") public class EmployeeController { @GET @Path("/result") public ThymeleafViewable result(…) { Map models = … return new ThymeleafViewable( "employee/result.html", models); } ౉͍ͨ͠஋ΛMapʹ put͓ͯ͘͠ jjug-jersey-mvc/src/main/java/com/example/rest/controller/EmployeeControler.java ※ࣼମ෦෼͕Jersey MVCͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Thymeleaf༻TemplateProcessor 45 @Provider public class ThymeleafTemplateProcessor extends AbstractTemplateProcessor { private TemplateEngine templateEngine; @Inject public ThymeleafTemplateProcessor( Configuration config, ServletContext sc) { super(config, sc, "html", "html"); ServletContextTemplateResolver resolver = new ServletContextTemplateResolver(sc); … templateEngine = new TemplateEngine(); templateEngine.setTemplateResolver(resolver); } // ࣍΁ଓ͘ jjug-jersey-mvc/src/main/java/com/example/rest /thymeleaf/ThymeleafTemplateProcessor.java ※ࣼମ෦෼͕Jersey MVCͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Thymeleaf༻TemplateProcessor(ଓ͖) 46 // ଓ͖ @Override public void writeTo(...) { WebContext webContext = new WebContext( request, response, servletContext, request.getLocale()); Map map = (Map) viewable.getModel(); webContext.setVariables(map); templateEngine.process( viewable.getTemplateName(), webContext, response.getWriter()); } } jjug-jersey-mvc/src/main/java/com/example/rest /thymeleaf/ThymeleafTemplateProcessor.java Thymeleaf͕ ϨεϙϯεΛॻ͖ग़͢ ※ࣼମ෦෼͕Jersey MVCͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ίϯτϩʔϥʔϝιου಺Ͱ όϦσʔγϣϯ͢Δ 48 @Inject Validator validator; @GET @Path("/result") public ThymeleafViewable result( @BeanParam EmployeeIdForm form) { Set> violations = validator.validate(form); if (!violations.isEmpty()) { Map model = …; model.put("violations", violations); return new ThymeleafViewable( "employee/index.html", model); } Bean ValidationΛ ࣮ߦ͢ΔΠϯλϑΣʔε Ҿ਺ʹ@Valid͸෇͚ͳ͍ ݕূ࣮ߦ Τϥʔ͕͋Ε͹ ೖྗը໘ʹ໭Δ

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μϛʔͷϝοηʔδ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ࢀߟɿϦμΠϨΫτ͍ͨ͠৔߹ ! JAX-RSͷίʔυͰॻ͚͹OK 52 @GET @Path("/redirect") public Response redirect( @Context UriInfo uriInfo) throws Exception { URI location = uriInfo.getBaseUriBuilder() .path(HelloResource.class) .path("redirect2") .build(); return Response.status(Response.Status.FOUND) .location(location).build(); } URIΛ૊ΈཱͯΔ ϝιουΛ࣋ͭ ૊ΈཱͯͨURIΛLocationϔομʹࢦఆ εςʔλείʔυΛ 3xxʹࢦఆ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. RESTEasy HTMLͷجຊతͳ࢖͍ํᶃ ! ApplicationαϒΫϥεΛ࡞੒͢Δ ! ಛผͳΫϥεͷొ࿥͸ඞཁͳ͠ ! JAX-RSͷProvidersػೳʹΑΔ΋ͷ 53 @ApplicationPath("/api") public class MyApplication extends Application { } jjug-resteasy-html/src/main/java/com/example/rest/MyApplication.java

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Thymeleaf༻Renderableͷ࡞੒ 56 public class ThymeleafView implements Renderable { private String templateName; private Map models; private TemplateEngine templateEngine; public ThymeleafView(String templateName) { this(templateName, new HashMap<>()); } public ThymeleafView(String templateName, Map models) { this.templateName = templateName; this.models = models; } void setTemplateEngine(TemplateEngine templateEngine) { this.templateEngine = templateEngine; } RenderableΛ࣮૷ ※ࣼମ෦෼͕RESTEasy HTMLͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Thymeleaf༻Renderableͷ࡞੒(ଓ͖) 57 // ଓ͖ @Override public void render(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException, WebApplicationException { response.setCharacterEncoding("UTF-8"); WebContext webContext = new WebContext( request, response, request.getServletContext(), request.getLocale()); webContext.setVariables(models); templateEngine.process(templateName, webContext, response.getWriter()); } } render()಺ͰTemplateEngine#process()Λ࣮ߦ ※ࣼମ෦෼͕RESTEasy HTMLͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. TemplateEngineΛηοτ͢Δ Πϯλʔηϓλʔͷ࡞੒ ! JAX-RSͷWriterInterceptorͰ࡞੒ ! NameBindingΞϊςʔγϣϯΛࣗ࡞ͯ͠ɺ্ هΠϯλʔηϓλʔΛద༻͢Δίϯτϩʔϥʔ ϝιου಺Λࢦఆ ! खஈ͸͜Ε͚ͩͰ͸ͳ͍ͷͰɺ৭ʑࢼͯ͠Έ ͍ͯͩ͘͞ 58

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. Ξϊςʔγϣϯͷ࡞੒ 59 @NameBinding @Retention(RetentionPolicy.RUNTIME) @Target({ElementType.METHOD, ElementType.TYPE}) @Documented public @interface ThymeleafController { } @NameBindingΛ෇Ճͨ͠ ΞϊςʔγϣϯΛࣗ࡞

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. WriterInterceptorͷ࡞੒ 60 @Provider @ThymeleafController public class ThymeleafWriterInterceptor implements WriterInterceptor { private TemplateEngine templateEngine; @Inject private ServletContext sc; @PostConstruct public void init() { ServletContextTemplateResolver resolver = new ServletContextTemplateResolver(sc); resolver.setPrefix("/WEB-INF/views/"); resolver.setTemplateMode(TemplateMode.HTML); templateEngine = new TemplateEngine(); templateEngine.setTemplateResolver(resolver); } ࣗ࡞Ξϊςʔγϣϯ Λ෇Ճ WriterInterceptorΛ࣮૷

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. WriterInterceptorͷ࡞੒(ଓ͖) 61 @Override public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException { Object entity = context.getEntity(); if (ThymeleafView.class.isAssignableFrom(entity.getClass())) { ThymeleafView thymeleafView = (ThymeleafView) context.getEntity(); thymeleafView.setTemplateEngine(templateEngine); } context.proceed(); } } context.proceed()ΑΓલʹ TemplateEngineΛηοτ͢Δ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ίϯτϩʔϥʔϝιου 62 @GET @Path("result") @ThymeleafController public ThymeleafView result(…) { Map models = …; models.put("employee", employee); return new ThymeleafView( "employee/result.html", models); } ࣗ࡞ͨ͠ΞϊςʔγϣϯΛ෇Ճ →Πϯλʔηϓλʔ͕ద༻͞ΕΔ Ϗϡʔͷύεͱ౉͢஋Λࢦఆ ※ࣼମ෦෼͕RESTEasy HTMLͷػೳ

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. JAX-RSͷࢀߟ৘ใ ! ͏Β͕Έ͞Μͷࢿྉ ! ಛʹॲཧύΠϓϥΠϯ͕ॏཁ ! http://backpaper0.github.io/ghosts/ jaxrs-getting-started-and- practice.html#38 ! Java EE 7పఈೖ໳ ! Oracle͞Μͷྗ࡞ʂ 67

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#ccc_cd4 (C) CASAREAL, Inc. All rights reserved. ͦͷଞ ! Bean Validation → @opengl_8080͞Μͷϒϩά ! http://qiita.com/opengl-8080/items/ 3926fbde5469c0b330c2 ! CDI → ࣉా͞ΜͷJDT2015ͷࢿྉ ! http://www.oracle.com/technetwork/jp/ondemand/ online2015-javaday-2511676-ja.html ! JPA → JJUG CCC 2015 Springͷࢿྉʢ੿ஶʣ ! http://www.slideshare.net/masatoshitada7/jpa-46874399 68