0 Replies Latest reply on Jul 30, 2013 11:47 AM by gstvie

    Problem with StringConverter in JAX-RS

    gstvie Newbie

      Hello,

       

      I recently started working with JBoss again and I am struggling a bit.

       

      At the moment, I am trying to build a JAX-RS service that is returns a simple data structure.

      One of the fields however has to be passed to a StringConverter.

      The REST - service returns the json - data, however the String conversion is never executed.

       

      My environment ist jboss-eap-6.1. and I am using the jboss-javaee6-multi project structure. I attached the complete source to this post.

       

      I would be really, really thankful, if someone could help me with this problem :-)

       

      My domain - model consists of two classes: MyObjectContainer and MyObject. MyObject should use a StringConverter, when it is marshalled to JSON - this is the following code:

       

      @Provider
      public class MyConverter implements StringConverter<MyObject>{
      
          @Override
          public MyObject fromString(String arg0) {
              MyObject my = new MyObject();
              my.setLastName((arg0.split(", "))[0]);
              my.setFirstName((arg0.split(", "))[1]);
              return my;
          }
      
          @Override
          public String toString(MyObject arg0) {
              return arg0.getLastName() + ", " + arg0.getFirstName();
          }
      
      }
      

       

      My Service looks like this and just returns some dummy information for testing:

       

      @Path("/context")
      public class ContextResource {
          private final static String MEDIA_TYPE = "application/vnd.mtp.context.v1+json";
              
          @GET
          @Produces(MEDIA_TYPE)
          public MyObjectContainer getContext() {
              MyObjectContainer mycont = new MyObjectContainer();
              MyObject my = new MyObject();
              mycont.setId(1L);
              my.setLastName("Doe");
              my.setFirstName("John");
              mycont.setMy(my);
              return mycont;
          }
      }
      

       

      But somehow I always get this Json String:

      {"my":{"firstName":"John","lastName":"Doe"},"id":1,"uri":"/mycontainer/1"}
      

      instead of

      {"my": "Doe, John","id":1,"uri":"/mycontainer/1"}
      

       

       

      the two domain objects look like this:

       

      @JsonSerialize(include = Inclusion.NON_EMPTY)
      public class MyObjectContainer implements Serializable{
          public static final String URIPATTERN ="/mycontainer/{id}";
              
          private MyObject my;
      
          public MyObject getMy() {
              return my;
          }
       ...
      }
      
      
      
      public class MyObject {
          private String firstName;
          private String lastName;
          public String getFirstName() {
              return firstName;
          }
          public void setFirstName(String firstName) {
              this.firstName = firstName;
          }
          public String getLastName() {
              return lastName;
          }
          public void setLastName(String lastName) {
              this.lastName = lastName;
          }   
      }
      

       

      I tried quite a few things with web.xml (i.e. resteasy.scan, resteasy.providers,...), however I think it should be enough to include an empty web.xml and use a JaxRsActivactor class instead (as in the ticketmonster-tutorial).

       

      To be complete - the relevant part of my pom.xml:

       

       

      <?xml version="1.0" encoding="UTF-8"?>
      <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
         <modelVersion>4.0.0</modelVersion>
      
         <parent>
            <artifactId>jboss-javaee6-multi</artifactId>
            <groupId>org.jboss.tools.example</groupId>
            <version>0.0.1-SNAPSHOT</version>
         </parent>
      
         <artifactId>jboss-javaee6-multi-web</artifactId>
         <packaging>war</packaging>
      
         <name>jboss-javaee6-multi: WAR Module</name>
      
         <url>http://jboss.org/jbossas</url>
         <licenses>
            <license>
               <name>Apache License, Version 2.0</name>
               <distribution>repo</distribution>
               <url>http://www.apache.org/licenses/LICENSE-2.0.html</url>
            </license>
         </licenses>
      
         <dependencies>
      
            <!-- Dependency on the EJB module so we can use it's services if needed -->
            <dependency>
               <groupId>org.jboss.tools.example</groupId>
               <artifactId>jboss-javaee6-multi-ejb</artifactId>
               <type>ejb</type>
               <scope>provided</scope>
            </dependency>
      
            <!-- Import the JAX-RS API, we use provided scope as the API is included in JBoss AS 7 -->
            <dependency>
               <groupId>org.jboss.spec.javax.ws.rs</groupId>
               <artifactId>jboss-jaxrs-api_1.1_spec</artifactId>
               <scope>provided</scope>
            </dependency>
      
            <!-- Import the CDI API, we use provided scope as the API is included in JBoss AS 7 -->
            <dependency>
               <groupId>javax.enterprise</groupId>
               <artifactId>cdi-api</artifactId>
               <scope>provided</scope>
            </dependency>
            
            <!-- Import the JSF API, we use provided scope as the API is included in JBoss AS 7 -->
            <dependency>
               <groupId>org.jboss.spec.javax.faces</groupId>
               <artifactId>jboss-jsf-api_2.1_spec</artifactId>
               <scope>provided</scope>
            </dependency>
      
            <!-- Import the JPA API, we use provided scope as the API is included in JBoss AS 7 -->
            <dependency>
               <groupId>org.hibernate.javax.persistence</groupId>
               <artifactId>hibernate-jpa-2.0-api</artifactId>
               <scope>provided</scope>
            </dependency>
      
             <!-- JSR-303 (Bean Validation) Implementation -->
             <!-- Provides portable constraints such as @Email -->
             <!-- Hibernate Validator is shipped in JBoss AS 7 -->
             <dependency>
                 <groupId>org.hibernate</groupId>
                 <artifactId>hibernate-validator</artifactId>
                 <scope>provided</scope>
                 <exclusions>
                     <exclusion>
                         <groupId>org.slf4j</groupId>
                         <artifactId>slf4j-api</artifactId>
                     </exclusion>
                 </exclusions>
             </dependency>
      
             <dependency>
                 <groupId>org.jboss.resteasy</groupId>
                 <artifactId>resteasy-jaxrs</artifactId>
                 <version>2.3.7.Final</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.jboss.resteasy</groupId>
                 <artifactId>resteasy-jackson-provider</artifactId>
                 <version>2.3.6.Final</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.jboss.resteasy</groupId>
                 <artifactId>resteasy-cdi</artifactId>
                 <version>2.3.7.Final</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.codehaus.jackson</groupId>
                 <artifactId>jackson-jaxrs</artifactId>
                 <version>1.9.9</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.codehaus.jackson</groupId>
                 <artifactId>jackson-mapper-asl</artifactId>
                 <version>1.9.9</version>
                 <scope>provided</scope>
             </dependency>
             <dependency>
                 <groupId>org.codehaus.jackson</groupId>
                 <artifactId>jackson-core-asl</artifactId>
                 <version>1.9.9</version>
                 <scope>provided</scope>
             </dependency>
         </dependencies>
      
         <build>
            <finalName>${project.artifactId}</finalName>
            <plugins>
               <plugin>
                  <artifactId>maven-war-plugin</artifactId>
                  <version>${version.war.plugin}</version>
                  <configuration>
                     <!-- Java EE 6 doesn't require web.xml, Maven needs to catch up! -->
                     <failOnMissingWebXml>false</failOnMissingWebXml>
                  </configuration>
               </plugin>
            </plugins>
         </build>
      
      </project>
      
      

       

       

      If somebody could point me in the right direction, I would be forever thankful ;-).

       

      BR,

      Gerald