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• Java???????·????????Java EE????JAX-RS 2.0??????Java Developers Workshop 2012 Summer????

  - by ???02

  ???Java??????????????????1?????“GlassFish Guy”??????????????·????????????·????????????8???????Java Developers Workshop 2012 Summer???????????????Java EE????2??????????????????????????????????(???) Java EE??????“????·?????”????? ??????·?????????Java????????????·???? Java??????????????????????????????Java??????????Java????????·????????????????????????????????Java????????Java EE 7?JAX-RS?????????????????? 1?????????Java EE 7 and HTML5: Developing for the Cloud????????Java EE??????????????·?????????????????????????????????? Java EE?????????2009?10?????????Java EE 6??????????????????????????4,000????????????????17?????????·????Java EE 6??????????????Java EE 6?????????????????????Java EE 6??????10??????? ?????????????????WAR???????????EJB??? ????Java EE???EJB????·???????????????????????????·???????(DD)?????????????????????Java EE 6????????????EJB?“?????”?????????POJO????????????????EJB????????????????????POJO?WAR??????????????????????DD???????????????????????????????????????(????) ??1??????????????????CDI(Context Dependency Injection)????DI????Java EE 5??????????????????????????????????Java EE 6?CDI???????????·?????????????DI???????????????????Spring Framework??????????????????????????Java EE???DI??????????????????????? ????????????Java EE????????????????????????????Amazon Web Services?Windows Azure????IaaS?Google App Engine????PaaS?Salesforce.com????SaaS?????????????????????·?????????????????????????????????????????????????????????????? ????????Java EE???????????????????????????????Java EE?????????????????·????????????Java EE??????????????????????????????????????????·?????????????? ??????????????????Java EE 7??????????????Java EE 8??????·??????????????????????????HTML5??3???????????????????????????????????????????????????????????????? ?????Java EE???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????Cloud Application Service(??)??????????????????????????????????????????????????????????????????????????????? ???HTML5??????“Web??????·??????”????JSON?WebSockets??????????????Java EE???????????????Web????????????????????????WebSocket???????????????????????·?????????????WebSocket?????Java EE????????????????????????????? ???Java EE 7????????API????????????????????? ??????????????????·?????????????????????·????????????????????????????5??API??Java EE 7??????????????????????????????????????????????????????????????????????????????????????????????????????????????????(????)???? Java EE 7?????????????????API????????????????????????????2013??2??????????????????????????????????????????????????????????????????Web???(http://javaee-spec.java.net/)???????????????????????????????? ??????????Project Avatar???????????Project Avatar??????????Java????????????????????????????Java????????????HTML5???????????????????????????HTML?Java???????????????????????Java EE???????????????????????????????? JAX-RS 2.0?Java??????????????????? ???????2?????????JAX-RS 2.0: RESTful Java on Steroids???Java????RESTful?????????????API???JAX-RS?????Java EE 7???????JAX-RS 2.0???????????????????????????????? ?????????“RESTful”???????????????????? ????????????????????????????? ?????????????? ???????????????? ??????????????(??)??? ????????????????????(?????????????????) ????Java EE????????API?????????????JAX-RS 1.0??JAX-RS 1.0???POJO????API???HTTP??????????????????????????????????????????????? ????????????JAX-RS 2.0???????????8??????????/???????????? ?Client API ?Client-side and Server-side Asynchronous ?Filters and Interceptors ?Improved Connection Negotiation ?Validation ?Hypermedia ?Alignment with JSR 330 ?Model-View-Controller JAX-RS 2.0??????????????·????????????????????Model-View-Controller?????????????????????Model-View-Controller?????????JSF????MVC???????????????JAX-RS???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ???Client API???????????????HTTP??????·????????????????????????API???????????????JAX-RS 2.0?Client API???JAX-RS?????API??????????????Java EE?????????????REST??????????????????? ?Filters&Interceptors????????????????????????JAX-RS??????????????????JAX-RS 1.0???????????JAX-RS 2.0??????????????????????? ?Asynchronus??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?Connect Negotiation???Validation???????????????????????Validation????????????????Bean Validation?????JAX-RS?????????????????????????? ?Hypermedia???????????????????Web???????????????????HATEOAS(Hypermedia As The Engine Of App State)?????JAX-RS????????????????????????????????Asynchronus???????????????????????????? JAX-RS 2.0???????????JSR 330:Dependency Injection for Java???????????????????Client API??????????????????????????????????????JAX-RS 2.0??????????????????????Web???????????·??????????(http://jcp.org/en/jsr/detail?id=339)????????????????????????????????????????

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• RS-232 vs. RS-485

  - by user60524

  Doing a little research on the two to figure out which one may better suit my purposes (communications amongst different hardware). How do they fare against one another? Im far from being a specialist and have no idea where I would even start looking for data to compare and contrast. If possible can someone please answer the following questions in regards to each of these. Can they be networked amongst each other? Can they be easily networked over ethernet? What speeds do they transfer at? (Min, Max, Etc.) Reliability? Best framework to build on top of to support the above? Any standard communications programs? Debugging capability? Any help would be very much appreciated, thanks.

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• Whats the difference between rs.close vs rs = nothing in a RecordSet

  - by Curtis Inderwiesche

  I often find it confusing as to when it is appropriate to use: rs.Close opposed to Set rs = Nothing I can understand needing to close a connection to a source, but should I be using both when the variable falls out of scope? Or should I just use one or the other?

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• Unable to set cookie in response header (newcookie doesn't show in external browser) : Jersey jax-rs

  - by Pankhuri

  I am trying to set a session cookie from server side : import javax.ws.rs.core.NewCookie; import javax.ws.rs.core.Response; public class Login { @POST @Produces("application/json") @Consumes("application/json") public Response login (String RequestPacket){ NewCookie cookie=null; CacheControl cc=new CacheControl(); cookie = LoginBO.validUser(RequestPacket); cc.setNoCache(true); if(cookie.getValue()!=null) return Response.ok("welcome "+cookie.getValue()).cookie(cookie).cacheControl(cc).build(); else return Response.status(404).entity("Invalid User").build(); } } In eclipse browser: on the client side (using gxt for that) when I print header i get the Set-Cookie field. which is expected. But the browser is not storing the cookie. in external browser: the header doesn't have any set-cookie field. Should I use HTTPServletResponse? But shouldn't the javax.ws.rs.core.Response work as well?

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• Form input validation with JAX-RS

  - by deamon

  I want to use JAX-RS REST services as a back-end for a web application used directly by humans with browsers. Since humans make mistakes from time to time I want to validate the form input and redisplay the form with validation message, if something wrong was entered. By default JAX-RS sends a 400 or 404 status code if not all or wrong values were send. Say for example the user entered a "xyz" in the form field "count": @POST public void create(@FormParam("count") int count) { ... } JAX-RS could not convert "xyz" to int and returns "400 Bad Request". How can I tell the user that he entered an illegal value into the field "count"? Is there something more convenient than using Strings everywhere and perform conversation by hand?

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• Is JAX-RS suitable as a MVC framework?

  - by deamon

  JAX-RS has some MVC support, but I wonder if JAX-RS is really a good choice to build web application for human use. If a user enters wrong or incomplete information in a form, it should be displayed again like with Grails or Wicket. Is there a comfortable way to do this with JAX-RS? As far as I know the URI mapping doesn't work correctly, if not all required parameters are given or there are type conversion problems (with Date for example). Is that correct? Is there support for internationalized templates?

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• Buy HTC HD7 Windows Phone 7 From Airtel In India @ Rs. 29990

  - by Gopinath

  Are you looking for HTC HD 7 Windows Phone 7 in India? Head over to Airtel showroom near you to grab one. Airtel in partnership with HTC is offering HD 7 Windows Phone 7 for Rs. 29990 and users will get 2 GB of data usage for 6 months at Rs. 300. Mr. Shireesh Joshi, CMO-Mobile Services of Bharti Airtel,  in a press conference says We are delighted with the opportunity to bring the eagerly-awaited HTC HD7 Smartphone in India. Combining the strength of the airtel brand and network with the innovation and design of HTC and the great user-interface of Windows Phone 7, we are happy to bring another first for our customers that will take mobile communications to a whole new level. The HD7 has a 4.3-inch display, kickstand to rest your phone on a table, 5MP autofocus camera that allows you to record 720p videos, 1GHz processor, 576MB of RAM and has 16GB of internal memory. Even though this is the official launch of HTC HD7 in India, this phone is available in the market for quite sometime at an approximate price of Rs. 27000/-. So it’s your call to decide whether buy it at HTC authorized retailers like Airtel for Rs.29K  or in the market for Rs 27K. HTC HD 7 Promo Video Thanks Fonearena This article titled,Buy HTC HD7 Windows Phone 7 From Airtel In India @ Rs. 29990, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Convert JSON query parameters to objects with JAX-RS

  - by deamon

  I have a JAX-RS resource, which gets its paramaters as a JSON string like this: http://some.test/aresource?query={"paramA":"value1", "paramB":"value2"} The reason to use JSON here, is that the query object can be quite complex in real use cases. I'd like to convert the JSON string to a Java object, dto in the example: @GET @Produces("text/plain") public String getIt(@QueryParam("query") DataTransferObject dto ) { ... } Does JAX-RS support such a conversion from JSON passed as a query param to Java objects?

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• Weird Excel Formatting

  - by Gage

  Recently a new co-op was hired at our company and has been tasked to run a report. The report queries the database and returns a resultset and from there procedes to create the spreadsheets. Depending on the number of days selected a different number of reports are generated but I do not believe that is relavent to the question. Basically it runs the reports and loops through the resultset but at some point continues to loop through until tow 65536 at which it stops. For Example if the resultset contained 74 records then the first 74 rows would appear normally (formatted yellow) while everything after that would also be formatted yellow although it should be left alone. I am inheriting this code as I to am a new co-op. Apparently this only happens when a "change of guards" happens (New co-op has to run the report).` DoCmd.SetWarnings False DoCmd.OpenQuery ("DailySummaryQueryMain") strSQL = "SELECT * FROM DailySummaryMain" Set rs = CurrentDb.OpenRecordset(strSQL) DoCmd.Echo True, "Running first Report" If Not rs.EOF Then rs.MoveFirst Do While Not rs.EOF And Not rs.BOF xlapp.Range("A" & i).Value = rs.Fields(0).Value xlapp.Range("B" & i).Value = rs.Fields(1).Value xlapp.Range("C" & i).Value = rs.Fields(2).Value Set rs2 = CurrentDb.OpenRecordset("SELECT dbo_StatusType.StatusTypeID, dbo_StatusType.Name FROM dbo_StatusType WHERE (((dbo_StatusType.StatusTypeID)=" & rs.Fields(3) & "))") rs2.MoveFirst xlapp.Range("D" & i).Value = rs2.Fields(1).Value xlapp.Range("E" & i).Value = rs.Fields(4).Value xlapp.Range("F" & i).Value = rs.Fields(5).Value xlapp.Range("G" & i).Value = rs.Fields(6).Value 'count number of outages that start and end on same day If Format(xlapp.Range("F" & i).Value, "mm/dd/yyyy") = Format(xlapp.Range("G" & i).Value, "mm/dd/yyyy") Then dayCount = dayCount + 1 End If xlapp.Range("H" & i).Value = rs.Fields(7).Value xlapp.Range("I" & i).Value = rs.Fields(8).Value xlapp.Range("J" & i).Value = rs.Fields(9).Value xlapp.Range("K" & i).Value = rs.Fields(10).Value xlapp.Range("L" & i).Value = rs.Fields(11).Value xlapp.Range("M" & i).Value = rs.Fields(12).Value xlapp.Range("N" & i).Value = rs.Fields(13).Value 'highlite recently modified rows If rs.Fields(14).Value = "Yes" Then xlapp.Range("A" & i & ":N" & i).Select With xlapp.Selection.Interior .ColorIndex = 36 .Pattern = xlSolid End With End If 'break apart by sector If CInt(rs.Fields(2).Value) = 1 Then row = row1 ElseIf CInt(rs.Fields(2).Value) = 2 Then row = row2 ElseIf CInt(rs.Fields(2).Value) = 3 Then row = row3 Else row = row4 End If xlapp.Worksheets(CInt(rs.Fields(2).Value) + 1).Activate xlapp.Range("A" & row).Value = rs.Fields(0).Value xlapp.Range("B" & row).Value = rs.Fields(1).Value xlapp.Range("C" & row).Value = rs.Fields(13).Value xlapp.Range("D" & row).Value = rs.Fields(4).Value xlapp.Range("E" & row).Value = rs.Fields(5).Value xlapp.Range("F" & row).Value = rs.Fields(6).Value xlapp.Range("G" & row).Value = rs.Fields(7).Value xlapp.Range("H" & row).Value = rs.Fields(8).Value xlapp.Range("I" & row).Value = rs.Fields(9).Value xlapp.Range("J" & row).Value = rs.Fields(10).Value xlapp.Range("K" & row).Value = "" xlapp.Range("L" & row).Value = rs.Fields(11).Value xlapp.Range("M" & row).Value = rs.Fields(13).Value If CInt(rs.Fields(2).Value) = 1 Then row1 = row1 + 1 ElseIf CInt(rs.Fields(2).Value) = 2 Then row2 = row2 + 1 ElseIf CInt(rs.Fields(2).Value) = 3 Then row3 = row3 + 1 Else row4 = row4 + 1 End If 'activate main summary sheet for next outage xlapp.Worksheets(1).Activate i = i + 1 rs.MoveNext Loop` Also I should note that this is all happening within an access database which has its tables linked from SQL. The query is extremely slow to run from which I believe is the use of views but thats neither here nor there. All you have to know is attempting to debug takes an enormous amount of time due to having to wait for the recordset to return. My guess is that its not checking to see if the resultset is empty correctly. Is there a way I could check to see if theres a value is rs.Fields(0) and base it off that maybe? That is the ID column and there should always be a value. I am wondering why rs.EOF isn't catching this though.

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• Automated SSRS deployment with the RS utility

  - by Stacy Vicknair

  If you’re familiar with SSRS and development you are probably aware of the SSRS web services. The RS utility is a tool that comes with SSRS that allows for scripts to be executed against against the SSRS web service without needing to create an application to consume the service. One of the better benefits of using this format rather than writing an application is that the script can be modified by others who might be involved in the creation and addition of scripts or management of the SSRS environment.   Reporting Services Scripter Jasper Smith from http://www.sqldbatips.com created Reporting Services Scripter to assist with the created of a batch process to deploy an entire SSRS environment. The helper scripts below were created through the modification of his generated scripts. Why not just use this tool? You certainly can. For me, the volume of scripts generated seems less maintainable than just using some common methods extracted from these scripts and creating a deployment in a single script file. I would, however, recommend this as a product if you do not think that your environment will change drastically or if you do not need to deploy with a higher level of control over the deployment. If you just need to replicate, this tool works great. Executing with RS.exe Executing a script against rs.exe is fairly simple. The Script Half the battle is having a starting point. For the scripting I needed to do the below is the starter script. A few notes: This script assumes integrated security. This script assumes your reports have one data source each. Both of the above are just what made sense for my scenario and are definitely modifiable to accommodate your needs. If you are unsure how to change the scripts to your needs, I recommend Reporting Services Scripter to help you understand how the differences. The script has three main methods: CreateFolder, CreateDataSource and CreateReport. Scripting the server deployment is just a process of recreating all of the elements that you need through calls to these methods. If there are additional elements that you need to deploy that aren’t covered by these methods, again I suggest using Reporting Services Scripter to get the code you would need, convert it to a repeatable method and add it to this script! Public Sub Main() CreateFolder("/", "Data Sources") CreateFolder("/", "My Reports") CreateDataSource("/Data Sources", "myDataSource", _ "Data Source=server\instance;Initial Catalog=myDatabase") CreateReport("/My Reports", _ "MyReport", _ "C:\myreport.rdl", _ True, _ "/Data Sources", _ "myDataSource") End Sub   Public Sub CreateFolder(parent As String, name As String) Dim fullpath As String = GetFullPath(parent, name) Try RS.CreateFolder(name, parent, GetCommonProperties()) Console.WriteLine("Folder created: {0}", name) Catch e As SoapException If e.Detail.Item("ErrorCode").InnerText = "rsItemAlreadyExists" Then Console.WriteLine("Folder {0} already exists and cannot be overwritten", fullpath) Else Console.WriteLine("Error : " + e.Detail.Item("ErrorCode").InnerText + " (" + e.Detail.Item("Message").InnerText + ")") End If End Try End Sub   Public Sub CreateDataSource(parent As String, name As String, connectionString As String) Try RS.CreateDataSource(name, parent,False, GetDataSourceDefinition(connectionString), GetCommonProperties()) Console.WriteLine("DataSource {0} created successfully", name) Catch e As SoapException Console.WriteLine("Error : " + e.Detail.Item("ErrorCode").InnerText + " (" + e.Detail.Item("Message").InnerText + ")") End Try End Sub   Public Sub CreateReport(parent As String, name As String, location As String, overwrite As Boolean, dataSourcePath As String, dataSourceName As String) Dim reportContents As Byte() = Nothing Dim warnings As Warning() = Nothing Dim fullpath As String = GetFullPath(parent, name)   'Read RDL definition from disk Try Dim stream As FileStream = File.OpenRead(location) reportContents = New [Byte](stream.Length-1) {} stream.Read(reportContents, 0, CInt(stream.Length)) stream.Close()   warnings = RS.CreateReport(name, parent, overwrite, reportContents, GetCommonProperties())   If Not (warnings Is Nothing) Then Dim warning As Warning For Each warning In warnings Console.WriteLine(Warning.Message) Next warning Else Console.WriteLine("Report: {0} published successfully with no warnings", name) End If   'Set report DataSource references Dim dataSources(0) As DataSource   Dim dsr0 As New DataSourceReference dsr0.Reference = dataSourcePath Dim ds0 As New DataSource ds0.Item = CType(dsr0, DataSourceDefinitionOrReference) ds0.Name=dataSourceName dataSources(0) = ds0     RS.SetItemDataSources(fullpath, dataSources)   Console.Writeline("Report DataSources set successfully")       Catch e As IOException Console.WriteLine(e.Message) Catch e As SoapException Console.WriteLine("Error : " + e.Detail.Item("ErrorCode").InnerText + " (" + e.Detail.Item("Message").InnerText + ")") End Try End Sub     Public Function GetCommonProperties() As [Property]() 'Common CatalogItem properties Dim descprop As New [Property] descprop.Name = "Description" descprop.Value = "" Dim hiddenprop As New [Property] hiddenprop.Name = "Hidden" hiddenprop.Value = "False"   Dim props(1) As [Property] props(0) = descprop props(1) = hiddenprop Return props End Function   Public Function GetDataSourceDefinition(connectionString as String) Dim definition As New DataSourceDefinition definition.CredentialRetrieval = CredentialRetrievalEnum.Integrated definition.ConnectString = connectionString definition.Enabled = True definition.EnabledSpecified = True definition.Extension = "SQL" definition.ImpersonateUser = False definition.ImpersonateUserSpecified = True definition.Prompt = "Enter a user name and password to access the data source:" definition.WindowsCredentials = False definition.OriginalConnectStringExpressionBased = False definition.UseOriginalConnectString = False Return definition End Function   Private Function GetFullPath(parent As String, name As String) As String If parent = "/" Then Return parent + name Else Return parent + "/" + name End If End Function

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• Marek Potociar on JAX-RS 2

  - by reza_rahman

  Java EE 7 is turning the last lap! Late last month JAX-RS 2 (JSR 339) and Bean Validation 1.1 (JSR 349) were adopted by public review ballot, making them the first two JSR's to be ratified. InfoQ interviewed Marek Potociar, JSR 339 co-spec lead (Marek and Santiago Pericas-Geertsen are the dynamic duo leading JAX-RS). Marek talks about JAX-RS 2 content, significance and future. Read the full interview here.

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• JAX-RS 2.0 Early Draft - Third Edition Available

  - by arungupta

  JAX-RS 2.0 Early Draft Third Edition is now available. This updated draft include new samples explaining the features and clarifications in content-negotiation, discovery of providers, client-side API, filters and entity interceptors and several other sections. Provide feedback to users@jax-rs-spec. Jersey 2.0, the Reference Implementation of JAX-RS 2.0, released their fourth milestone a few days ago as well. Several features have already been implemented there. Note, this is an early development preview and several parts of the API and implementation are still evolving. Feel like trying it out? Simply go to Maven Central (of course none of this is production quality at this point). The latest JAX-RS Javadocs and Jersey 2.0 API docs are good starting points to explore. And provide them feedback at [email protected] or @gf_jersey.

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• Overwrite HTTP method with JAX-RS

  - by deamon

  Today's browsers (or HTML < 5) only support HTTP GET and POST, but to communicate RESTful one need PUT and DELETE too. If the workaround should not be to use Ajax, something like a hidden form field is required to overwrite the actual HTTP method. Rails uses the following trick: <input name="_method" type="hidden" value="put" /> Is there a possibility to do something similar with JAX-RS?

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• JAX-RS JSON java.util.Date Unmarshall

  - by user229498

  Hi, I'm using Jersey (jax-rs), to build a REST rich application. Everything is great, but I really don't understand how to set in JSON Marshalling and Unmarshalling converting option for dates and numbers. I have a User class: @XmlRootElement public class User { private String username; private String password; private java.util.Date createdOn; // ... getters and setters } When createdOn property is serialized, a string like this: '2010-05-12T00:00:00+02:00', but I need to choose date Pattern both, to marshall and unmarshall. Someone knows hot to do that? Thank's a lot, Davide.

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• Inject a EJB into JAX-RS (RESTfull service)

  - by Zeck

  Hi guys, I'm trying to inject Stateless EJB into my JAX-RS webservice via Annotations. Unfortunately the ejb is just null and I get a NullPointerException when I try to use it. @Path("book") public class BookResource { @EJB private BookEJB bookEJB; public BookResource() { } @GET @Produces("application/xml") @Path("/{bookId}") public Book getBookById(@PathParam("bookId") Integer id) { return bookEJB.findById(id); } } What am I wrong doing? Here are some informations about my machine: Glassfish 3.1 Netbeans 6.9 RC 2 Java EE 6 Can you guys put some working example? And thank you for every advises and examples?

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• Using @Context, @Provider and ContextResolver in JAX-RS

  - by Tamás

  I'm just getting acquainted with implementing REST web services in Java using JAX-RS and I ran into the following problem. One of my resource classes requires access to a storage backend, which is abstracted away behind a StorageEngine interface. I would like to inject the current StorageEngine instance into the resource class serving the REST requests and I thought a nice way of doing this would be by using the @Context annotation and an appropriate ContextResolver class. This is what I have so far: In MyResource.java: class MyResource { @Context StorageEngine storage; [...] } In StorageEngineProvider.java: @Provider class StorageEngineProvider implements ContextResolver<StorageEngine> { private StorageEngine storage = new InMemoryStorageEngine(); public StorageEngine getContext(Class<?> type) { if (type.equals(StorageEngine.class)) return storage; return null; } } I'm using com.sun.jersey.api.core.PackagesResourceConfig to discover the providers and the resource classes automatically, and according to the logs, it picks up the StorageEngineProvider class nicely (timestamps and unnecessary stuff left out intentionally): INFO: Root resource classes found: class MyResource INFO: Provider classes found: class StorageEngineProvider However, the value of storage in my resource class is always null - neither the constructor of StorageEngineProvider nor its getContext method is called by Jersey, ever. What am I doing wrong here?

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• How to pass a very long string/file into RESTWebservice JAX-RS Jersey

  - by Sashikiran Challa

  Hello All, I am trying to write a webservice that takes in an XML string, does parsing of it using DOM and extract particular things I want. My XML string happens to be very long so I do not want to pass it as a @QueryParam or @PathParam. Say If I write that XML string into a file, How do I go about writing a RESTful service that takes in this file, extracts whatever I want and return the results. I am actually trying to extract some number of strings, so my output should probably be an ArrayList having all these strings. Could somebody please shed some light on how I should go about doing this. Thanks in advance

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• JAX-RS implementation of link/element expansion?

  - by Jimmy

  While reading documentation of Google Data API and Atlassian REST API, I found interesting functionality - link (or title, element expansion) - http://bit.ly/i3rKMw. I would like to implement this functionality in my Java project of web service server for our IS, but I can't find any proper solution or advices for implementation. My project is quite big with many services so I need some robust and most automated solution. I was thinking about how to implement it like an extension for RESTEasy and JAXB, but it seems to be very complicated. Do you know some opensource projects which implements this functionality or any advices which could help me?

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• Excellent JAX-RS 2 Article on JavaLobby

  - by reza_rahman

  JAX-RS 2 is a key part of Java EE 7. It is currently in early draft stage and this is a great time to provide feedback. With this goal in mind, well-respected Java EE veteran Bill Burke of JBoss wrote an excellent article on DZone/JavaLobby overviewing what's in JAX-RS 2 so far. He discusses: The client API Asynchronous processing Filters and entity interceptors The full article is posted here. Enjoy!

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• First JSRs Proposed for Java EE 7

  - by Jacob Lehrbaum

  With the approval of Java SE 7 and Java SE 8 JSRs last month, attention is now shifting towards the Java EE platform.  While functionality pegged for Java EE 7 was previewed at least as early as Devoxx, the filing of these JSRs marks the first, officially proposed, specifications for the next generation of the popular application server standard.  Let's take a quick look at the proposed new functionality.Java Persistence API 2.1The first of the new proposed specifications is JSR 338: Java Persistence API (JPA) 2.1. JPA is designed for use with both Java EE and Java SE and: "deals with the way relational data is mapped to Java objects ("persistent entities"), the way that these objects are stored in a relational database so that they can be accessed at a later time, and the continued existence of an entity's state even after the application that uses it ends. In addition to simplifying the entity persistence model, the Java Persistence API standardizes object-relational mapping." (more about JPA)JAX-RS 2.0The second of the new Java specifications that have been proposed is JSR 339, otherwise known as JAX-RS 2.0. JAX-RS provides an API that enables the easy creation of web services using the Representational State Transfer (REST) architecture.  Key features proposed in the new JSR include a Client API, improved support for URIs, a Model-View-Controller architecture and much more!More informationOfficial proposal for Java Persistence 2.1 (jcp.org)Official proposal for JAX-RS 2.0 (jcp.org)Kicking off Java EE 7 with 2 JSRs: JAX-RS 2.0 / JPA 2.1 (the Aquarium)

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• How to set response header in JAX-RS so that user sees download popup for Excel?

  - by masato-san

  I wrote code that generate Excel file using REST JAX-RS and I confirmed that the generated Excel file is in GlassFish server directory. But my goal is when user click on the button (which generate Excel .xls), I want download popup to show up asking user whether to save or open the .xls file just like any other web services doing for downloading any type of files. According to my search, the step is: generate Excel .xls (DONE) write the excel to stream in JAX-RS file, set response header to something like, String fileName = "Blah_Report.xls"; response.setHeader("Content-Disposition", "attachment; filename=" + fileName); My question is I'm doing all of this in JAX-RS file and I don't have HttpServletResponse object available. According to the answer from Add Response Header to JAX-RS Webservice He says: You can inject a reference to the actual HttpServletResponse via the @Context annotation in your webservice and use addHeader() etc. to add your header. I can't really figure what exactly that means without sample code..

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• Apple iPhone 3GS 8GB now available for Rs 19,990

  - by samsudeen

  Well it is almost 2 years after the original launch, Apple has re-launched its  iPhone 3GS 8GB model for a much cheaper price of Rs.19,990 in India. This is an quite interesting move by Apple to wow the Indian smart phone market which is dominated by the cheaper android phones from Samsung , HTC and others. These are the specifications of the iPhone 3GS version ( just in case you have forgotten as it is too old) 3.5″ capacitive display with pixel dimensions of 320×480 3 MP camera with auto focus High speed connectivity up to 7.2 Mbps on 3G HSDPA 600 MHz  processor speed iOS 4.3 unlocked and upgradable to iOS 5.0 Hardware support for 3D graphics Millions of apps which are unique to iPhone. With only few months left for release of the much anticipated “iPhone 5″ and a market which is already loaded with a wide range of cheaper & feature rich smart phones the competition is going to be tougher for Apple This article titled,Apple iPhone 3GS 8GB now available for Rs 19,990, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Selecting a JAX-RS implementation for a new project

  - by Fernando Correia

  I'm starting a new Java project which will require a RESTful API. It will be a SaaS business application serving mobile clients. I have developed one project with Java EE 6, but I'm not very familiar with the ecosystem, since most of my experience is on the Microsoft platform. Which would be a sensible choice for a JAX-RS implementation for a new project such as described? Judging by Wikipedia's list, main contenders seem to be Jersey, Apache CXF, RESTeasy and Restlet. But the Comparison of JAX-RS Implementations cited on Wikipedia is from 2008. My first impressings from their respective homepages is that: CXF aims to be a very comprehensive solution (reminds me of WCF in the Microsoft space), which makes me think it can be more complex to understand, setup and debug than what I need; Jersey is the reference implementation and might be a good choice, but it's legacy from Sun and I'm not sure how Oracle is treating it (announcements page doesn't work and last commit notice is from 4 months ago); RESTeasy is from JBoss and probably a solid option, though I'm not sure about learning curve; Restlet seems to be popular but has a lot of history, I'm not sure how up-to-date it is in the Java EE 6 world or if it carries a heavy J2EE mindset (like lots of XML configuration). What would be the merits of each of these alternatives? What about learning curve? Feature support? Tooling (e.g. NetBeans or Eclipse wizards)? What about ease of debugging and also deployment? Is any of these project more up-to-date than the others? How stable are them?

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• excel:mysql: rs.Update crashes

  - by every_answer_gets_a_point

  i am connecting to mysql from excel and updating a table. as soon as i get to .update (rs.update) excel crashes. am i doing something wrong? Option Explicit Dim oConn As ADODB.Connection Private Sub ConnectDB() Set oConn = New ADODB.Connection oConn.Open "DRIVER={MySQL ODBC 5.1 Driver};" & _ "SERVER=localhost;" & _ "DATABASE=employees;" & _ "USER=root;" & _ "PASSWORD=pas;" & _ "Option=3" End Sub Function esc(txt As String) esc = Trim(Replace(txt, "'", "\'")) End Function Private Sub InsertData() Dim dpath, atime, rtime, lcalib, aname, rname, bstate, instrument As String Dim rs As ADODB.Recordset Set rs = New ADODB.Recordset ConnectDB With wsBooks rs.Open "batchinfo", oConn, adOpenKeyset, adLockOptimistic, adCmdTable Worksheets.Item("Report 1").Select dpath = Trim(Range("B2").Text) atime = Trim(Range("B3").Text) rtime = Trim(Range("B4").Text) lcalib = Trim(Range("B5").Text) aname = Trim(Range("B6").Text) rname = Trim(Range("B7").Text) bstate = Trim(Range("B8").Text) ' instrument = GetInstrFromXML(wbBook.FullName) With rs .AddNew ' create a new record ' add values to each field in the record .Fields("datapath") = dpath .Fields("analysistime") = atime .Fields("reporttime") = rtime .Fields("lastcalib") = lcalib .Fields("analystname") = aname .Fields("reportname") = rname .Fields("batchstate") = bstate ' .Fields("instrument") = "NA" .Update ' stores the new record End With ' get the last id Set rs = oConn.Execute("SELECT @@identity", , adCmdText) 'MsgBox capture_id rs.Close Set rs = Nothing End With End Sub

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• JAX-RS: The Java API for RESTful Web Services

  This article reviews two popular JAX-RS frameworks, Jersey and Apache CXF, and provides some basic examples that illustrate how to build, deploy, and execute RESTful web services.

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