{"id":9342,"date":"2014-04-09T14:43:01","date_gmt":"2014-04-09T19:43:01","guid":{"rendered":"http:\/\/jianmingli.com\/wp\/?p=9342"},"modified":"2015-12-16T16:26:26","modified_gmt":"2015-12-16T21:26:26","slug":"jdeveloper-restful-jpa-ejb3","status":"publish","type":"post","link":"https:\/\/jianmingli.com\/wp\/?p=9342","title":{"rendered":"JDeveloper RESTful JPA EJB3"},"content":{"rendered":"
\n

Contents<\/h2>\n
    \n\t
  1. \n\t\tCreate Project<\/a>\n\t\t
      \n\t\t\t
    1. \n\t\t\t\tCreate Jersey User Library<\/a>\n\t\t\t<\/li>\n\t\t\t
    2. \n\t\t\t\tCreate Project<\/a>\n\t\t\t<\/li>\n\t\t\t
    3. \n\t\t\t\tCreate a DB Connection<\/a>\n\t\t\t<\/li>\n\t\t<\/ol>\n\t
    4. \n\t\tCreate Entity Bean<\/a>\n\t<\/li>\n\t
    5. \n\t\tCreate EJB Diagram<\/a>\n\t<\/li>\n\t
    6. \n\t\tCreate Stateless Session Bean<\/a>\n\t<\/li>\n\t
    7. \n\t\tCreate JAX-RS<\/a>\n\t<\/li>\n\t
    8. \n\t\tDeploy<\/a>\n\t<\/li>\n\t
    9. \n\t\tIssues<\/a>\n\t\t
        \n\t\t\t
      1. \n\t\t\t\tA message body writer for Java class java.util.Vector, and Java type java.util.List...<\/a>\n\t\t\t<\/li>\n\t\t<\/ol>\n\t
      2. \n\t\tReferences<\/a>\n\t<\/li>\n<\/ol>\n<\/ol>\n<\/div>\n
         <\/div>\n

        * JDeveloper 11.1.1.6<\/p>\n

        Create Project<\/h2><\/span>\n

        Create Jersey User Library<\/h3><\/span>\n

        Create a user library and add all Jersey lib files to it
        \n* Download both Jersey zip bundle and jar bundle from         Jersey download site<\/a>:
        \n– Jersey 1.17.1 ZIP bundle
        \n– Jersey 1.17.1 JAR bundle
        \n* Unzip zip bundle
        \n* From JDeveloper, go to Tools > Manage Libraries > User > New…
        \n– Library Name: jersey1.7-lib
        \n* Add Jersey jars files to the library
        \n* Also check Deploy by default<\/em> checkbox<\/p>\n

        Create Project<\/h3><\/span>\n

        * In JDev, got to New > Projects > Generic Project
        \n– Project Name: jpaejb3Demo1
        \n– Default package: rest.jpaejb3
        \n* From Project Properties > Libraries and Classpath > Add Library…<\/em>, Add jersey1.7-lib<\/em> to the classpath
        \n* Also need to add j2ee1.5 api libary to class path<\/p>\n

        Create a DB Connection<\/h3><\/span>\n

        * Create an db connection named hr<\/p>\n

        Create Entity Bean<\/h2><\/span>\n

        * Right click newly created project
        \n* Select New > Business Tier > EJB > Entities from Tables
        \n* Select DEPARTMENTS table
        \n* Package name: rest.jpaejb3<\/p>\n

        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n

        Create EJB Diagram<\/h2><\/span>\n

        * Right click newly created project
        \n* Select New > Business Tier > EJB > EJB Diagram (JPA\/EJB 3.0)
        \n* Enter:
        \n– Name: EJB3
        \n– Package: rest.jpaejb3<\/p>\n

        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n

        * Drag and drop Departments.java to the diagram<\/p>\n

        <\/h6><\/span>\n

        Create Stateless Session Bean<\/h2><\/span>\n

        * Drag a Component Palette > EJB Components > EJB Nodes > Session Bean to the diagram
        \n* Enter:
        \n– EJB Name: DeptSessionEJB
        \n– Session Type: Stateless
        \n– Transaction Type: Container
        \n– Mapped Name: RESTfulApp-jpaejb3Demo1-DeptSessionEJB
        \n– Checked: Generate Session Facade Methods
        \n– Entity implementation: JPA Entities
        \n– Persistence Unit: jpaejb3Demo1
        \n– Bean class: rest.jpaejb3.DeptSessionEJBBean<\/p>\n

        <\/h6><\/span>\n
        <\/h6><\/span>\n
        <\/h6><\/span>\n

        Create JAX-RS<\/h2><\/span>\n

        * Create a new Java class and annotate with Jersey annotations<\/p>\n

        \r\npackage rest.jpaejb3;\r\n\r\nimport java.util.Hashtable;\r\n\r\nimport java.util.List;\r\n\r\nimport javax.naming.Context;\r\nimport javax.naming.InitialContext;\r\nimport javax.naming.NamingException;\r\n\r\nimport javax.ws.rs.GET;\r\nimport javax.ws.rs.Path;\r\nimport javax.ws.rs.Produces;\r\nimport javax.ws.rs.core.MediaType;\r\n\r\n@Path(\"\/deptService\")\r\npublic class DeptService {\r\n    private DeptSessionEJB deptBean;\r\n    private String mappedName = \r\n        \"RESTfulApp-jpaejb3Demo1-DeptSessionEJB#rest.jpaejb3.DeptSessionEJB\";\r\n    \r\n    public DeptService() {\r\n        Context ctx;\r\n        try {\r\n            ctx = getInitialContext();\r\n            deptBean = (DeptSessionEJB)ctx\r\n                .lookup(mappedName);;\r\n        } catch (NamingException e) {\r\n            throw new RuntimeException(e.getMessage());\r\n        }\r\n    }\r\n\r\n    @GET\r\n    @Path(\"{deptId}\")\r\n    @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})\r\n    public Departments findDeptment(@PathParam(\"deptId\") int deptId){\r\n        return deptBean.findDeptById(deptId);\r\n    }\r\n    \r\n    @GET\r\n    @Path(\"\/departments\")\r\n    @Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})\r\n    public List listDepartments(){\r\n        return deptBean.getDepartmentsFindAll();\r\n    }\r\n\r\n    private static Context getInitialContext() throws NamingException {\r\n        return new InitialContext();\r\n    }\r\n}\r\n\r\n<\/pre>\n
        * Click on @Path(“\/deptService”), then click on the question mark yellow balloon, and select configure web.xml for Jersey JAX-WS web services<\/p>\n
        <\/h6><\/span>\n
        * Also annotate Departments class with @XMLRootElement<\/p>\n
        \r\n@Entity\r\n@NamedQueries({\r\n  @NamedQuery(name = \"Departments.findAll\", query = \"select o from Departments o\")\r\n})\r\n@XmlRootElement\r\npublic class Departments implements Serializable {\r\n\r\n<\/pre>\n
        Deploy<\/h2><\/span>\n
        * Right click DeptService and select Run
        \n[04:50:38 PM] —-  Deployment finished.  —-
        \nRun startup time: 3713 ms.
        \n[Application RESTfulApp deployed to Server Instance IntegratedWebLogicServer]<\/p>\n
        Target Application WADL — http:\/\/localhost:7101\/RESTfulApp-jpaejb3Demo1-context-root\/jersey\/application.wadl<\/p>\n
        Target URL — http:\/\/127.0.0.1:7101\/RESTfulApp-jpaejb3Demo1-context-root\/jersey\/deptService\/departments<\/p>\n
        * Test by pointing browser to http:\/\/127.0.0.1:7101\/RESTfulApp-jpaejb3Demo1-context-root\/jersey\/deptService\/departments<\/a> and you should see sample output:<\/p>\n
        \r\n10<\/departmentId>Administration<\/departmentName>1700<\/locationId>200<\/managerId><\/departments>20<\/departmentId>Marketing<\/departmentName>1800<\/locationId>201<\/managerId><\/departments>\r\n<\/pre>\n
        Issues<\/h2><\/span>\n
        A message body writer for Java class java.util.Vector, and Java type java.util.List…<\/h3><\/span>\n
        * A message body writer for Java class java.util.ArrayList<\/a>
        \n*         How to produce JSON output with Jersey 1.17.1 using JAXB<\/a><\/p>\n
        References<\/h2><\/span>\n
        * RESTful services with jQuery and Java using JAX-RS and Jersey<\/a>
        \n*         Developing RESTful Web Services from JDeveloper 11g (11.1.1.4)<\/a>
        \n*         RESTful Web Service using JPA\/EJB 3.0 Entities<\/a>
        \n*         http:\/\/www.oracle.com\/webfolder\/technetwork\/tutorials\/obe\/jdev\/obe11jdev\/ps1\/ejb\/ejb.html<\/a>
        \n*         Easy way to access JPA with REST (JSON \/ XML)<\/a> <\/p>\n","protected":false},"excerpt":{"rendered":"
        * JDeveloper 11.1.1.6 Create Project Create Jersey User Library Create a user library and add all Jersey lib files to it * Download both Jersey zip bundle and jar bundle from Jersey download site: – Jersey 1.17.1 ZIP bundle – … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[14,483],"tags":[484,194,590],"class_list":["post-9342","post","type-post","status-publish","format-standard","hentry","category-java","category-restful-soa","tag-ejb3","tag-jersey","tag-weblogic"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8cRUO-2qG","_links":{"self":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/9342","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9342"}],"version-history":[{"count":14,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/9342\/revisions"}],"predecessor-version":[{"id":11115,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/9342\/revisions\/11115"}],"wp:attachment":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}