Comments for baeldung http://www.baeldung.com Coding and Testing Stuff Fri, 18 May 2012 20:23:00 +0000 hourly 1 http://wordpress.org/?v=3.3.2 Comment on Securing a RESTful Web Service with Spring Security 3.1 by Thedug http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-463 Thedug Fri, 18 May 2012 20:23:00 +0000 http://www.baeldung.com/?p=325#comment-463 I was just checking out the github project. The security xml file is quite different from what I see here. There's no mention of the success handler or the entry point. Is that intentional? It also introduces a digest authentication and references a BASIC_AUTH_FILTER, but I haven't seen where that is defined. I was just checking out the github project. The security xml file is quite different from what I see here. There’s no mention of the success handler or the entry point. Is that intentional?

It also introduces a digest authentication and references a BASIC_AUTH_FILTER, but I haven’t seen where that is defined.

]]> Comment on The Persistence Layer with Spring 3.1 and JPA by Carlos Dañel Ferreyra http://www.baeldung.com/2011/12/13/the-persistence-layer-with-spring-3-1-and-jpa/#comment-459 Carlos Dañel Ferreyra Fri, 11 May 2012 03:26:00 +0000 http://www.baeldung.com/?p=720#comment-459 I think someone may have stolen your blog http://java.dzone.com/articles/persistence-layer-spring-31-0 I think someone may have stolen your blog
http://java.dzone.com/articles/persistence-layer-spring-31-0

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by René Fleischhauer http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-457 René Fleischhauer Mon, 07 May 2012 16:09:00 +0000 http://www.baeldung.com/?p=325#comment-457 Hi all, thanks for the tutorial. Great stuff! I have a minor question: I added within the element in order to customize the login url. After starting the application again the following exception occurs: org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Filter beans '' and '' have the same 'order' value. When using custom filters, please make sure the positions do not conflict with default filters. Alternatively you can disable the default filters by removing the corresponding child elements from and avoiding the use of . The problem is clear, however I'm not sure how I can avoid the use of j_spring_security_check. I'd highly appreciate any hint. Best, René Hi all,

thanks for the tutorial. Great stuff! I have a minor question:

I added within the element in order to customize the login url. After starting the application again the following exception occurs:

org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Filter beans ” and ” have the same ‘order’ value. When using custom filters, please make sure the positions do not conflict with default filters. Alternatively you can disable the default filters by removing the corresponding child elements from and avoiding the use of .

The problem is clear, however I’m not sure how I can avoid the use of j_spring_security_check. I’d highly appreciate any hint.

Best,
René

]]> Comment on The Persistence Layer with Spring 3.1 and Hibernate by Martin http://www.baeldung.com/2011/12/02/the-persistence-layer-with-spring-3-1-and-hibernate/#comment-456 Martin Sat, 05 May 2012 20:23:00 +0000 http://www.baeldung.com/?p=637#comment-456 Hi, sorry but i am a newbie at Hibernate and Spring and i am using your generic DAO implementation in order to start testing and playing with this stuff. I am a little confused with the Preconditions.whatever you are using in the generic DAO implementation. Is that an auxiliary class for checking if the entity about to be used is in the correct state before you actually do the merge, delete or whatever? In order to prevent exceptions? Or is it something different? Sorry for my very basic question, but i would like to fully understand what you have have so kindly expressed in such a clear way. Hi, sorry but i am a newbie at Hibernate and Spring and i am using your generic DAO implementation in order to start testing and playing with this stuff.
I am a little confused with the Preconditions.whatever you are using in the generic DAO implementation. Is that an auxiliary class for checking if the entity about to be used is in the correct state before you actually do the merge, delete or whatever? In order to prevent exceptions? Or is it something different?
Sorry for my very basic question, but i would like to fully understand what you have have so kindly expressed in such a clear way.

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by René Fleischhauer http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-455 René Fleischhauer Fri, 04 May 2012 15:54:00 +0000 http://www.baeldung.com/?p=325#comment-455 Hi Sigmund, all, I have the same problem... super.onAuthenticationSuccess(request, response, authentication) calls SimpleUrlAuthenticationSuccessHandler#handle which contains the following line redirectStrategy.sendRedirect(request, response, targetUrl); Seems to be pretty non-sense to call the super method and therefore, I also removed it. Additionally I added a response.setStatus(200) for safety purposes... Best, René Hi Sigmund, all,

I have the same problem…

super.onAuthenticationSuccess(request, response, authentication) calls SimpleUrlAuthenticationSuccessHandler#handle which contains the following line

redirectStrategy.sendRedirect(request, response, targetUrl);

Seems to be pretty non-sense to call the super method and therefore, I also removed it. Additionally I added a response.setStatus(200) for safety purposes…

Best,
René

]]> Comment on How to set up Integration Testing with the Maven Cargo plugin by JS Unit Testing | i-proving.com http://www.baeldung.com/2011/10/16/how-to-set-up-integration-testing-with-the-maven-cargo-plugin/#comment-454 JS Unit Testing | i-proving.com Tue, 01 May 2012 20:32:34 +0000 http://www.baeldung.com/?p=134#comment-454 [...] Selenium, cargo and maven : http://www.baeldung.com/2011/10/16/how-to-set-up-integration-testing-with-the-maven-cargo-plugin/ [...] [...] Selenium, cargo and maven : http://www.baeldung.com/2011/10/16/how-to-set-up-integration-testing-with-the-maven-cargo-plugin/ [...]

]]> Comment on REST Service Discoverability with Spring by Guest http://www.baeldung.com/2011/11/13/rest-service-discoverability-with-spring-part-5/#comment-453 Guest Sat, 28 Apr 2012 01:00:00 +0000 http://www.baeldung.com/?p=484#comment-453 Can you update the example as support for location is already added in spring 3.1 RC2 Can you update the example as support for location is already added in spring 3.1 RC2

]]> Comment on How to use RestTemplate with Basic Authentication in Spring by Art http://www.baeldung.com/2012/04/16/how-to-use-resttemplate-with-basic-authentication-in-spring-3-1/#comment-452 Art Wed, 18 Apr 2012 07:38:00 +0000 http://www.baeldung.com/?p=1433#comment-452 You've used plain auth.getBytes() which is always dangerous - it'll use the default platform encoding to get the bytes from the String. From what I can gather, HTTP basic authentication doesn't support non-ASCII very well: http://stackoverflow.com/a/703341/116509. In summary, you should use auth.getBytes("US-ASCII") intead. You’ve used plain auth.getBytes() which is always dangerous – it’ll use the default platform encoding to get the bytes from the String. From what I can gather, HTTP basic authentication doesn’t support non-ASCII very well: http://stackoverflow.com/a/703341/116509. In summary, you should use auth.getBytes(“US-ASCII”) intead.

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by Marc de Verdelhan http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-442 Marc de Verdelhan Wed, 11 Apr 2012 09:42:00 +0000 http://www.baeldung.com/?p=325#comment-442 Your article was just what I needed. But I tested your solution and it always returned a "401 Unauthorized". Finally I used the following config: Now it's simpler and it works fine. Could you explain why? Thank you. Your article was just what I needed. But I tested your solution and it always returned a “401 Unauthorized”.
Finally I used the following config:

Now it’s simpler and it works fine. Could you explain why?

Thank you.

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by Neomi http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-441 Neomi Thu, 05 Apr 2012 09:25:00 +0000 http://www.baeldung.com/?p=325#comment-441 Great article! But what is the login uri? Where is it defined? Great article!
But what is the login uri? Where is it defined?

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by baeldung http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-440 baeldung Thu, 05 Apr 2012 08:56:00 +0000 http://www.baeldung.com/?p=325#comment-440 Not sure how you can add the header to the URL - do you mean you added the header to the request? Also, to follow some working examples, you can always clone the project from github and run the tests. Not sure how you can add the header to the URL – do you mean you added the header to the request? Also, to follow some working examples, you can always clone the project from github and run the tests.

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by Naama http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-439 Naama Thu, 05 Apr 2012 08:39:00 +0000 http://www.baeldung.com/?p=325#comment-439 Great article! Great article!

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by baeldung http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-438 baeldung Mon, 02 Apr 2012 22:21:00 +0000 http://www.baeldung.com/?p=325#comment-438 You can take a look at: http://code.google.com/p/crypto-js/ You can take a look at: http://code.google.com/p/crypto-js/

]]> Comment on Securing a RESTful Web Service with Spring Security 3.1 by DropDeadFred http://www.baeldung.com/2011/10/31/securing-a-restful-web-service-with-spring-security-3-1-part-3/#comment-437 DropDeadFred Mon, 02 Apr 2012 22:09:00 +0000 http://www.baeldung.com/?p=325#comment-437 If you are using the REST service through AJAX from a browser can you had the necessary Authentication headers? For example, if you are using form based authentication to your website and want to retrieve data from your REST service. I guess I must just be missing something here. If you are using the REST service through AJAX from a browser can you had the necessary Authentication headers? For example, if you are using form based authentication to your website and want to retrieve data from your REST service. I guess I must just be missing something here.

]]> Comment on This Is Not Your Father’s Spring – A Learning Project by Gbondy http://www.baeldung.com/2012/01/03/this-is-not-your-fathers-spring-a-learning-project/#comment-436 Gbondy Mon, 02 Apr 2012 18:25:00 +0000 http://www.baeldung.com/?p=1007#comment-436 Do you have an example of a Spring 3.1 bean configuration with annotations when there is a many-to-many relationship. Here is a sample of doing this with xml config <code> org.hsqldb.jdbcDriver jdbc:hsqldb:hsql://localhost sa 1 org.hibernate.dialect.HSQLDialect true create-drop </code> I have seen examples for including the properties but I have not found one that shows how to deal with mapping class. Do you have an example of a Spring 3.1 bean configuration with annotations when there is a many-to-many relationship. Here is a sample of doing this with xml config

org.hsqldb.jdbcDriver
jdbc:hsqldb:hsql://localhost
sa

1
org.hibernate.dialect.HSQLDialect
true
create-drop

I have seen examples for including the properties but I have not found one that shows how to deal with mapping class.

]]> Comment on The Persistence Layer with Spring Data JPA by Murray B http://www.baeldung.com/2011/12/22/the-persistence-layer-with-spring-data-jpa/#comment-435 Murray B Mon, 02 Apr 2012 05:10:00 +0000 http://www.baeldung.com/?p=838#comment-435 I've been waiting for this kind of technology for a long time - it works well and reduces a lot of time traditionally wasted writing CRUD DAOs. From a maintenance perspective I'm a big fan of having a single set of packages where you put your SQL rather than spread throughout the code so it's easy to refactor, and this kind of lightweight framework simplicity makes it even easier to see what's CRUD and what's unique. Nice article, thanks! I’ve been waiting for this kind of technology for a long time – it works well and reduces a lot of time traditionally wasted writing CRUD DAOs. From a maintenance perspective I’m a big fan of having a single set of packages where you put your SQL rather than spread throughout the code so it’s easy to refactor, and this kind of lightweight framework simplicity makes it even easier to see what’s CRUD and what’s unique. Nice article, thanks!

]]> Comment on Project Configuration with Spring by MaciejWalkowiak http://www.baeldung.com/2012/03/12/project-configuration-with-spring/#comment-434 MaciejWalkowiak Fri, 30 Mar 2012 10:19:00 +0000 http://www.baeldung.com/?p=1458#comment-434 With Spring 3.1 there were introduced useful feature called profiles. With that you can define active profile for your environment - like you did with envTarget system property: http://blog.springsource.org/2011/02/14/spring-3-1-m1-introducing-profile/ . Recently I have posted how it can be used and configured together with Tomcat - to make it easy to build one package for all environments and make environment choose confiuration: http://maciejwalkowiak.pl/blog/2012/03/27/spring-3-1-profiles-and-tomcat-configuration/ With Spring 3.1 there were introduced useful feature called profiles. With that you can define active profile for your environment – like you did with envTarget system property: http://blog.springsource.org/2011/02/14/spring-3-1-m1-introducing-profile/ .

Recently I have posted how it can be used and configured together with Tomcat – to make it easy to build one package for all environments and make environment choose confiuration: http://maciejwalkowiak.pl/blog/2012/03/27/spring-3-1-profiles-and-tomcat-configuration/

]]> Comment on REST Pagination in Spring by RESTful pagination with cucumber-jvm, jersey and elasticsearch « Diving deep into JEE http://www.baeldung.com/2012/01/18/rest-pagination-in-spring/#comment-433 RESTful pagination with cucumber-jvm, jersey and elasticsearch « Diving deep into JEE Sun, 25 Mar 2012 22:40:35 +0000 http://www.baeldung.com/?p=1047#comment-433 [...] (first, previous, self, next, last) and links to the items. This can be done in a hundred way. This post used aop to generate links. Jersey and RESTEasy both have a native mechanism based on annotations [...] [...] (first, previous, self, next, last) and links to the items. This can be done in a hundred way. This post used aop to generate links. Jersey and RESTEasy both have a native mechanism based on annotations [...]

]]> Comment on Introduction to Java integration testing for a RESTful API by Harga Notebook http://www.baeldung.com/2011/10/13/integration-testing-a-rest-api/#comment-432 Harga Notebook Fri, 23 Mar 2012 12:23:00 +0000 http://www.baeldung.com/?p=47#comment-432 4567uiyhlkjmbvncxz Glad to be one of many visitors on this amazing website : D. http://update-seputar-software.blogspot.com/2011/12/ultrabook-notebook-tipis-harga-murah.html 4567uiyhlkjmbvncxz Glad to be one of many visitors on this amazing website : D.
http://update-seputar-software.blogspot.com/2011/12/ultrabook-notebook-tipis-harga-murah.html

]]> Comment on Building a RESTful Web Service with Spring 3.1 and Java based Configuration, part 2 by Knesek http://www.baeldung.com/2011/10/25/building-a-restful-web-service-with-spring-3-1-and-java-based-configuration-part-2/#comment-430 Knesek Mon, 19 Mar 2012 21:16:00 +0000 http://www.baeldung.com/?p=233#comment-430 Thanks for great post. For some reason, if methods are marked as final, Spring injection doesn't seem to work for controllers in my configuration (injected beans are null in controller). Couldn't figure out why. Just wanted to point that out if someone stumbles on the same problem. Thanks for great post. For some reason, if methods are marked as final, Spring injection doesn’t seem to work for controllers in my configuration (injected beans are null in controller). Couldn’t figure out why. Just wanted to point that out if someone stumbles on the same problem.

]]> Comment on The Persistence Layer with Spring 3.1 and JPA by Bean life cycle in spring « Zeeshan Akhter http://www.baeldung.com/2011/12/13/the-persistence-layer-with-spring-3-1-and-jpa/#comment-428 Bean life cycle in spring « Zeeshan Akhter Mon, 19 Mar 2012 10:28:03 +0000 http://www.baeldung.com/?p=720#comment-428 [...] The Persistence Layer with Spring 3.1 and JPA (baeldung.com) [...] [...] The Persistence Layer with Spring 3.1 and JPA (baeldung.com) [...]

]]> Comment on Transaction configuration with JPA and Spring 3.1 by Introduction to Spring’s Aspect Oriented Programming(AOP) « Zeeshan Akhter http://www.baeldung.com/2011/12/26/transaction-configuration-with-jpa-and-spring-3-1/#comment-427 Introduction to Spring’s Aspect Oriented Programming(AOP) « Zeeshan Akhter Sat, 17 Mar 2012 10:08:02 +0000 http://www.baeldung.com/?p=893#comment-427 [...] Transaction configuration with JPA and Spring 3.1 (baeldung.com) [...] [...] Transaction configuration with JPA and Spring 3.1 (baeldung.com) [...]

]]> Comment on Transaction configuration with JPA and Spring 3.1 by Spring 3 ASM – Spring asm Dependency « Zeeshan Akhter http://www.baeldung.com/2011/12/26/transaction-configuration-with-jpa-and-spring-3-1/#comment-425 Spring 3 ASM – Spring asm Dependency « Zeeshan Akhter Fri, 16 Mar 2012 05:43:30 +0000 http://www.baeldung.com/?p=893#comment-425 [...] Transaction configuration with JPA and Spring 3.1 (baeldung.com) [...] [...] Transaction configuration with JPA and Spring 3.1 (baeldung.com) [...]

]]> Comment on Simplifying the Data Access Layer with Spring and Java Generics by baeldung http://www.baeldung.com/2011/12/08/simplifying-the-data-access-layer-with-spring-and-java-generics/#comment-423 baeldung Tue, 13 Mar 2012 13:56:00 +0000 http://www.baeldung.com/?p=722#comment-423 I was thinking of the instance of a Class which is helpful when writing some queries. That would be the only state that requires the prototype scope; if that's not the case (and if using things like spring-data it's not in all likelihood necessary) then the prototype scope is not necessary and we can just inject the simple generic dao with different generic parameters and let erasures do the rest. Thanks for pointing it out - I'll update the article accordingly. Eugen. I was thinking of the instance of a Class which is helpful when writing some queries. That would be the only state that requires the prototype scope; if that’s not the case (and if using things like spring-data it’s not in all likelihood necessary) then the prototype scope is not necessary and we can just inject the simple generic dao with different generic parameters and let erasures do the rest.
Thanks for pointing it out – I’ll update the article accordingly.
Eugen.

]]> Comment on Simplifying the Data Access Layer with Spring and Java Generics by LG Optimusv http://www.baeldung.com/2011/12/08/simplifying-the-data-access-layer-with-spring-and-java-generics/#comment-422 LG Optimusv Tue, 13 Mar 2012 13:34:00 +0000 http://www.baeldung.com/?p=722#comment-422 "which would lead to a single instance of the DAO living in the container. That would obviously be majorly restrictive for any kind of more complex scenario.": I would like to see a complex case where a prototype-scoped DAO is better than a singleton-scoped DAO. I think the only case a prototype-scoped DAO is needed is that that DAO stores some states (i.e. it has member variables), but then why does a DAO need to store states? “which would lead to a single instance of the DAO living in the container. That would obviously be majorly restrictive for any kind of more complex scenario.”: I would like to see a complex case where a prototype-scoped DAO is better than a singleton-scoped DAO. I think the only case a prototype-scoped DAO is needed is that that DAO stores some states (i.e. it has member variables), but then why does a DAO need to store states?

]]> Comment on Project Configuration with Spring by baeldung http://www.baeldung.com/2012/03/12/project-configuration-with-spring/#comment-421 baeldung Mon, 12 Mar 2012 19:25:00 +0000 http://www.baeldung.com/?p=1458#comment-421 Well that depends on how you read/load the properties. In most cases (and by default in Spring) properties are loaded once when the Spring context is bootstrapped, so whatever you add later on, the running web application will not pick up. You can change values by hand and restart - no need to build again. Also, if you go once step forward, if you have a mechanism that listens on changes of these properties files (and reloads the values when they change) they you no longer need the restart (see what LiveRebel does for an example), but to answer your questions - no, you don't need to rebuild - that's the entire point of keeping these properties in properties files and not in code. Thanks for the feedback. Eugen. Well that depends on how you read/load the properties. In most cases (and by default in Spring) properties are loaded once when the Spring context is bootstrapped, so whatever you add later on, the running web application will not pick up. You can change values by hand and restart – no need to build again. Also, if you go once step forward, if you have a mechanism that listens on changes of these properties files (and reloads the values when they change) they you no longer need the restart (see what LiveRebel does for an example), but to answer your questions – no, you don’t need to rebuild – that’s the entire point of keeping these properties in properties files and not in code.
Thanks for the feedback.
Eugen.

]]> Comment on Project Configuration with Spring by SK http://www.baeldung.com/2012/03/12/project-configuration-with-spring/#comment-420 SK Mon, 12 Mar 2012 18:32:00 +0000 http://www.baeldung.com/?p=1458#comment-420 Ah, never mind - I see your point about making the properties file available on the classpath of the application, thanks! Ah, never mind – I see your point about making the properties file available on the classpath of the application, thanks!

]]> Comment on Project Configuration with Spring by SK http://www.baeldung.com/2012/03/12/project-configuration-with-spring/#comment-419 SK Mon, 12 Mar 2012 18:30:00 +0000 http://www.baeldung.com/?p=1458#comment-419 If we have to change the production environment configuration (let's say there is some change to the database host/port), does this mean that i have to rebuild my maven artifact with the new properties file? If we have to change the production environment configuration (let’s say there is some change to the database host/port), does this mean that i have to rebuild my maven artifact with the new properties file?

]]> Comment on Project Configuration with Spring by Dave http://www.baeldung.com/2012/03/12/project-configuration-with-spring/#comment-418 Dave Mon, 12 Mar 2012 15:50:00 +0000 http://www.baeldung.com/?p=1458#comment-418 We generally don't think it's a good idea to re-build for each target environment. We want to feel confident that the artifact tested in one environment (e.g. system test) is the same artifact tested in the next environment (e.g. UAT). So I actually think environment-specific properties files is the right way to go in this case. We generally don’t think it’s a good idea to re-build for each target environment. We want to feel confident that the artifact tested in one environment (e.g. system test) is the same artifact tested in the next environment (e.g. UAT). So I actually think environment-specific properties files is the right way to go in this case.

]]> Comment on Project Configuration with Spring by baeldung http://www.baeldung.com/2012/03/12/project-configuration-with-spring/#comment-417 baeldung Mon, 12 Mar 2012 15:32:00 +0000 http://www.baeldung.com/?p=1458#comment-417 Agreed - a parameter will need to be passed to the JVM when running the tests (which is something very standard in any IDE). Regarding the pom.xml change - there are pom changes and then there are pom changes - setting a variable is one thing, introducing a custom plugin doing transformations is another ( setting a JVM parameter is hopefully something simple and familiar to both dev and ops ). So, while I understand the appeal of the Maven solution, it is one more moving part that you need to understand and debug when things go wrong; I'd much rather do that with plain text files than with a Maven plugin, but it's clearly a decision to be evaluated based on the context, and a tread-off one way or another. My personal preference is towards this solution and I would choose the Maven plugin only if the complexity price would really be justified (perhaps on extremely large projects with lots and lots of changing configuration). Agreed – a parameter will need to be passed to the JVM when running the tests (which is something very standard in any IDE).
Regarding the pom.xml change – there are pom changes and then there are pom changes – setting a variable is one thing, introducing a custom plugin doing transformations is another ( setting a JVM parameter is hopefully something simple and familiar to both dev and ops ). So, while I understand the appeal of the Maven solution, it is one more moving part that you need to understand and debug when things go wrong; I’d much rather do that with plain text files than with a Maven plugin, but it’s clearly a decision to be evaluated based on the context, and a tread-off one way or another. My personal preference is towards this solution and I would choose the Maven plugin only if the complexity price would really be justified (perhaps on extremely large projects with lots and lots of changing configuration).

]]>