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Red Hat JBoss Enterprise Application Platform
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RESTEasy Reference Guide
17.7. Maps of JAXB Objects

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17.7. Maps of JAXB Objects

RESTEasy automatically marshals maps of JAXB objects to and from XML, JSON, Fastinfoset, and other JAXB mappers. Your parameter or method return type must be generic, with a String as the key and the JAXB object's type.

@XmlRootElement(namespace = "http://foo.com")
public static class Foo
{
   @XmlAttribute
   private String name;

   public Foo()
   {
   }

   public Foo(String name)
   {
      this.name = name;
   }

   public String getName()
   {
      return name;
   }
}

@Path("/map")
public static class MyResource
{
   @POST
   @Produces("application/xml")
   @Consumes("application/xml")
   public Map<String, Foo> post(Map<String, Foo> map)
   {
      Assert.assertEquals(2, map.size());
      Assert.assertNotNull(map.get("bill"));
      Assert.assertNotNull(map.get("monica"));
      Assert.assertEquals(map.get("bill").getName(), "bill");
      Assert.assertEquals(map.get("monica").getName(), "monica");
      return map;
   }
 }

@XmlRootElement(namespace = "http://foo.com")
public static class Foo
{
   @XmlAttribute
   private String name;

   public Foo()
   {
   }

   public Foo(String name)
   {
      this.name = name;
   }

   public String getName()
   {
      return name;
   }
}

@Path("/map")
public static class MyResource
{
   @POST
   @Produces("application/xml")
   @Consumes("application/xml")
   public Map<String, Foo> post(Map<String, Foo> map)
   {
      Assert.assertEquals(2, map.size());
      Assert.assertNotNull(map.get("bill"));
      Assert.assertNotNull(map.get("monica"));
      Assert.assertEquals(map.get("bill").getName(), "bill");
      Assert.assertEquals(map.get("monica").getName(), "monica");
      return map;
   }
 }

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This resource publishes and receives JAXB objects within a map. By default, they are wrapped in a map element in the default namespace. Each map element has zero or more entry elements with a key attribute.

 <map>
<entry key="bill" xmlns="http://foo.com">
    <foo name="bill"/>
</entry>
<entry key="monica" xmlns="http://foo.com">
    <foo name="monica"/>
</entry>
 </map>

 <map>
<entry key="bill" xmlns="http://foo.com">
    <foo name="bill"/>
</entry>
<entry key="monica" xmlns="http://foo.com">
    <foo name="monica"/>
</entry>
 </map>

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You can change the namespace URI, namespace prefix and map, entry, and key element and attribute names by using the @org.jboss.resteasy.annotations.providers.jaxb.WrappedMap annotation on a parameter or method.

 @Target({ElementType.PARAMETER, ElementType.METHOD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface WrappedMap
 {
/**
 * map element name
 */
String map() default "map";

/**
 * entry element name *
 */
String entry() default "entry";

/**
 * entry's key attribute name
 */
String key() default "key";

String namespace() default "";

String prefix() default "";
 }

 @Target({ElementType.PARAMETER, ElementType.METHOD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface WrappedMap
 {
/**
 * map element name
 */
String map() default "map";

/**
 * entry element name *
 */
String entry() default "entry";

/**
 * entry's key attribute name
 */
String key() default "key";

String namespace() default "";

String prefix() default "";
 }

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So, to output the following XML:

 <hashmap>
<hashentry hashkey="bill" xmlns:foo="http://foo.com">
    <foo:foo name="bill"/>
</hashentry>
 </map>

 <hashmap>
<hashentry hashkey="bill" xmlns:foo="http://foo.com">
    <foo:foo name="bill"/>
</hashentry>
 </map>

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We would use the @WrappedMap annotation as follows:

@Path("/map")
public static class MyResource
{
   @GET
   @Produces("application/xml")
   @WrappedMap(map="hashmap", entry="hashentry", key="hashkey")
   public Map<String, Foo> get()
   {
      ...
      return map;
   }

@Path("/map")
public static class MyResource
{
   @GET
   @Produces("application/xml")
   @WrappedMap(map="hashmap", entry="hashentry", key="hashkey")
   public Map<String, Foo> get()
   {
      ...
      return map;
   }

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17.7.1. JSON and JAXB maps
링크 복사

RESTEasy supports the use of maps with JSON. It encloses returned JAXB objects within simple JSON maps. For example:

   @XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public static class Foo
{
   @XmlAttribute
   private String test;

   public Foo()
   {
   }

   public Foo(String test)
   {
      this.test = test;
   }

   public String getTest()
   {
      return test;
   }

   public void setTest(String test)
   {
      this.test = test;
   }
}

   @XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public static class Foo
{
   @XmlAttribute
   private String test;

   public Foo()
   {
   }

   public Foo(String test)
   {
      this.test = test;
   }

   public String getTest()
   {
      return test;
   }

   public void setTest(String test)
   {
      this.test = test;
   }
}

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This a List or array of this Foo class would be represented in JSON like this:

 { "entry1" : {"foo":{"@test":"bill"}}, "entry2" : {"foo":{"@test":"monica}"}}}

 { "entry1" : {"foo":{"@test":"bill"}}, "entry2" : {"foo":{"@test":"monica}"}}}

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It also expects this format for input

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이 콘텐츠는 선택한 언어로 제공되지 않습니다.

17.7. Maps of JAXB Objects

17.7.1. JSON and JAXB maps
링크 복사

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이 콘텐츠는 선택한 언어로 제공되지 않습니다.

17.7. Maps of JAXB Objects

17.7.1. JSON and JAXB maps링크 복사링크가 클립보드에 복사되었습니다!

자세한 정보

평가판, 구매 및 판매

커뮤니티

Red Hat 문서 정보

보다 포괄적 수용을 위한 오픈 소스 용어 교체

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Red Hat legal and privacy links

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17.7.1. JSON and JAXB maps
링크 복사