java - CXF Rest 服务的 Jersey 客户端问题

Question

我正在尝试为使用 Apache CXF 创建的 REST 方法创建 REST 客户端。我使用 wadl2java 命令为客户端生成 DTO 类，但它们缺少 @@XmlRootElement 元素，因此我尝试使用 JAXB 对象工厂，但遇到问题。

请验证我的代码和我收到的异常。

来源: Person.java

@XmlRootElement(name="Person")
@XmlAccessorType(XmlAccessType.PUBLIC_MEMBER)
public class Person {
    private String name;
    private Address address;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

}

SampleRestService.java

@POST
@Path("/sayHello")
public void sayHello(Person person) {
    System.out.println("Hello there!!!");
    System.out.println("Your name -> " + person.getName());     
}

使用 wadl2java 命令创建的 Client Person.java:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "person", propOrder = {  
    "name"
})
public class Person {

    protected Address address;
    protected String name;

    /**
     * Gets the value of the address property.
     * 
     * @return
     *     possible object is
     *     {@link Address }
     *     
     */
    public Address getAddress() {
        return address;
    }

    /**
     * Sets the value of the address property.
     * 
     * @param value
     *     allowed object is
     *     {@link Address }
     *     
     */
    public void setAddress(Address value) {
        this.address = value;
    }

    /**
     * Gets the value of the name property.
     * 
     * @return
     *     possible object is
     *     {@link String }
     *     
     */
    public String getName() {
        return name;
    }

    /**
     * Sets the value of the name property.
     * 
     * @param value
     *     allowed object is
     *     {@link String }
     *     
     */
    public void setName(String value) {
        this.name = value;
    }

}

Jersey 客户端:

@Test
public void testSayHelloObjectFactory(){
   try {
    ObjectFactory objectFactory=new ObjectFactory();
    com.wk.client.data.Person person=objectFactory.createPerson();
    person.setName("Saravanan");

    ClientConfig config = new DefaultClientConfig();
    Client client = Client.create(config);
    WebResource service = client.resource(getBaseURI());        
           service.path("/sampleRestService").path("sayHello").accept(MediaType.APPLICATION_XML).post(person);
     } catch (Exception e) {
    e.printStackTrace();
    } 
}

收到异常::

com.sun.jersey.api.client.ClientHandlerException: com.sun.jersey.api.client.ClientHandlerException: A message body writer for Java type, class com.wk.client.data.Person, and MIME media type, application/octet-stream, was not found

此外，下面的资源类是由 wadl2java 创建的。这有什么用？

@Path("/")
public interface Resource {

    @POST
    @Consumes("application/octet-stream")
    @Path("sayHello")
    void post();

}

用于从 WADL 生成类的命令:

C:\apache-cxf-2.4.2\bin>wadl2java -p com.wk.rest.client http://localhost:8080/Re
stService/sampleRestService?_wadl&_type=xml

May 29, 2013 7:44:02 PM org.apache.cxf.jaxb.JAXBUtils logGeneratedClassNames
INFO: Created classes: generated.Address, generated.ObjectFactory, generated.Per
son
'_type' is not recognized as an internal or external command,
operable program or batch file.

下面是CXF生成的WADL:

<application xmlns="http://wadl.dev.java.net/2009/02" xmlns:xs="http://www.w3.org/2001/XMLSchema"><grammars><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" attributeFormDefault="unqualified" elementFormDefault="unqualified">
<xs:element name="Address" type="address"/>
<xs:element name="Person" type="person"/>
<xs:complexType name="person">
<xs:sequence>
<xs:element minOccurs="0" name="address" type="address"/>
<xs:element minOccurs="0" name="name" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="address">
<xs:sequence>
<xs:element minOccurs="0" name="city" type="xs:string"/>
<xs:element minOccurs="0" name="streetName" type="xs:string"/>
<xs:element name="streetNumber" type="xs:int"/>
</xs:sequence>
</xs:complexType>
</xs:schema>
</grammars><resources base="http://localhost:8080/RestService/sampleRestService"><resource path="/"><resource path="sayHello"><method name="POST"><request><representation mediaType="application/octet-stream"/></request><response status="204"></response></method></resource></resource></resources></application>

Answer 1

您发送一个等待 Resource 类中的 application/octet-stream 的 POST，但在测试用例中作为 APPLICATION_XML 发送。

还有一点是:post方法在构造函数中不接收任何参数，因此需要将要处理的Person对象声明给Resource方法。

只需删除 Resource 类中的 post() 方法即可。

[编辑]

我在这次通话中发现:

service.path("/sampleRestService").path("sayHello").accept(MediaType.APPLICATION_XML).post(person)

正确的是指定实体的类型，例如:

service.path("/sampleRestService").path("sayHello").type(MediaType.APPLICATION_XML).accept(MediaType.APPLICATION_XML).post(Person.class, person)