Category Archives: Java

FAQ: RESTful web service with Jersey&Jackson

  • How to do output in JSON format
    Server: 

    @POST
@Path("{id}")
@Produces("application/json")  
@Consumes("application/json")  
public JSONObject sayPlainTextHello(@PathParam("id")JSONObject inputJsonObj) {  
String input = (String) inputJsonObj.get("input");  
String output="The input you sent is :"+input;  
JSONObject outputJsonObj = new JSONObject();  
outputJsonObj.put("output", output);  
return outputJsonObj;  
}

    Client:

    ClientConfig config = new DefaultClientConfig();  
Client client = Client.create(config);  
WebResource service = client.resource(getBaseURI());  
JSONObject inputJsonObj = new JSONObject();  
inputJsonObj.put("input", "Value"); System.out.println(service.path("rest").path("hello").accept(MediaType.APPLICATION_JSON).entity(inputJsonObj).post(JSONObject.class,JSONObject.class));

FAQ: Spring Roo 1.2

  1. Spring Roo Pluging/Addons

    gvNIX
    WEB Report – jasperoo

    There is an introduction on blog at: http://my.digitalface.ca/2011/03/jas…-jasperoo.html
    The project is hosted on Google Code at: jasperoo.digitalface.ca.

     
roo> osgi start --url http://s.digitalface.ca/jasperoo-latest
roo> jasperoo setup
roo> jasperoo add --type ~.domain
roo> jasperoo all
    Vaadin

     

  2. Your Own Web App in Under 10 Minutes

    mkdir hello
cd hello
roo
roo> hint
roo> project --topLevelPackage com.foo
---------------------
roo> jpa setup --provider HIBERNATE --database HYPERSONIC_IN_MEMORY
roo> entity jpa --class ~.Timer --testAutomatically
roo> field string --fieldName message --notNull
OR
roo> jpa setup --provider HIBERNATE --database MYSQL --databaseName commission_app --userName root
roo> database reverse engineer --package ~.domain --schema commission_app
---------------------
roo> hint web mvc
roo> web mvc setup
roo> web mvc all --package ~.web
roo> web mvc finder all
roo> selenium test --controller ~.web.TimerController
roo> web gwt setup
roo> web gwt all --proxyPackage com.foo.client.request --requestPackage com.foo.client.request
roo> perform tests
roo> quit

    “roo> jpa setup –provider HIBERNATE –database MYSQL –databaseName spring_roo –userName root –password psw“.

    “roo> database reverse engineer –schema –package –testAutomatically –enableViews –includeTables –excludeTables –includeNonPortableAttributes” This command creates JPA entities in your project representing the tables and columns in your database. roo> database reverse engineer –schema order –package ~.domain

    “roo> perform eclipse” create IDE-specific workspace configuration artifacts if you not using STS or m2eclipse. Once this command has completed you are ready to import your project into STS by clicking ‘File > Import > General > Existing Projects into Workspace’. If you’re using STS or have installed m2eclipse into an Eclipse-based IDE can skip the perform eclipse command entirely. In this case you simply need to select in STS/Eclipse the ‘File > Import > General > Maven Projects’ menu option.

    “roo> backup” Issuing this command will create you a
    backup of the current workspace with all sources, log files and the script log file (excluding the target
    directory)

    “roo> addon search” lists all add-ons

    “roo> script bikeshop.roo” Import roo script

    “roo> perform package” This command produces your war file which can then be easily copied into your production Web container.

    "mvn gwt:run" to play with the GWT client
"mvn tomcat:run" to start the Tomcat MVC front-end
"mvn jetty:run-exploded"
"mvn eclipse:eclipse" and then use Eclipse's "General > Import Existing Project into Workspace" feature. Leave the Roo shell running and feel free to edit in Eclipse
"mvn install:install-file -DgroupId=com.oracle -DartifactId=ojdbc14 -Dversion=10.2.0.2 -Dpackaging=jar -Dfile=/path/to/file" maven command to install your driver into your local maven repository

  3. Useful links

    Documentation

    Developing a Spring Framework MVC application step-by-step
    http://www.springsource.org/download
    http://static.springsource.org/spring-roo/reference/html/beginning.html
    http://www.youtube.com/watch?v=IDDVi1tTPs0
    http://www.youtube.com/user/SpringSourceDev
    http://www.springsource.com/developer/sts
    http://blog.springsource.com/2009/05/27/roo-part-2/
    JSR-000303 Bean Validation
    iReport & JasperReport
    GWT
    Community Forums
    Java community site
    Spring Data

    Source code

    https://src.springframework.org/svn/spring-samples/
    https://github.com/SpringSource/spring-mvc-showcase

  4. org.hibernate.HibernateException: The database returned no natively generated identity value

    It should be an auto_increment column for the IDENTITY generator to work. Else, the database doesn’t return any generated ID.
    http://www.java2s.com/Questions_And_Answers/JPA/MySQL/HibernateException.htm

  5. Themes

    To achieve a higher level of customization you can change the default Tiles template (WEB-INF/layouts/default.jspx) and adjust the JSP pages (WEB-INF/views/*.jspx).
    theming support offered by Spring framework