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介绍一下怎么通过CXF来发布RESTful的Web Service.

1. 首先是实体类，注意其中的@XmlRootElement注解

package com.googlecode.garbagecan.cxfstudy.jaxrs;   import java.util.Date;   import javax.xml.bind.annotation.XmlRootElement;   @XmlRootElement(name="Customer")   public class Customer {      private String id;      private String name;      private Date birthday;      public String getId() {          return id;      }      public void setId(String id) {          this.id = id;      }      public String getName() {          return name;      }      public void setName(String name) {          this.name = name;      }      public Date getBirthday() {          return birthday;      }      public void setBirthday(Date birthday) {          this.birthday = birthday;      }      @Override     public String toString() {          return org.apache.commons.lang.builder.ToStringBuilder.reflectionToString(this);      }  }

2. RESTful Web Service接口类，可以通过修改@Produces注解来声明暴露接口返回的json还是xml数据格式

package com.googlecode.garbagecan.cxfstudy.jaxrs;   import javax.ws.rs.GET;  import javax.ws.rs.Path;  import javax.ws.rs.PathParam;  import javax.ws.rs.Produces;  import javax.ws.rs.QueryParam;   @Path(value = "/customer")   @Produces("*/*")  //@Produces("application/xml")  //@Produces("application/json")  public interface CustomerService {      @GET     @Path(value = "/{id}/info")      Customer findCustomerById(@PathParam("id")String id);            @GET     @Path(value = "/search")      Customer findCustomerByName(@QueryParam("name")String name);  }

3. RESTful Web Service接口实现类

package com.googlecode.garbagecan.cxfstudy.jaxrs;   import java.util.Calendar;   public class CustomerServiceImpl implements CustomerService {       public Customer findCustomerById(String id) {          Customer customer = new Customer();          customer.setId(id);          customer.setName(id);          customer.setBirthday(Calendar.getInstance().getTime());          return customer;      }            public Customer findCustomerByName(String name) {          Customer customer = new Customer();          customer.setId(name);          customer.setName(name);          customer.setBirthday(Calendar.getInstance().getTime());          return customer;      }  }

4. Server端代码

package com.googlecode.garbagecan.cxfstudy.jaxrs;   import org.apache.cxf.interceptor.LoggingInInterceptor;  import org.apache.cxf.interceptor.LoggingOutInterceptor;  import org.apache.cxf.jaxrs.JAXRSServerFactoryBean;   public class MyServer {      public static void main(String[] args) throws Exception {          JAXRSServerFactoryBean factoryBean = new JAXRSServerFactoryBean();          factoryBean.getInInterceptors().add(new LoggingInInterceptor());          factoryBean.getOutInterceptors().add(new LoggingOutInterceptor());          factoryBean.setResourceClasses(CustomerServiceImpl.class);          factoryBean.setAddress("http://localhost:9000/ws/jaxrs");          factoryBean.create();      }  }

5. Client端代码

package com.googlecode.garbagecan.cxfstudy.jaxrs;   import org.apache.commons.httpclient.HttpClient;  import org.apache.commons.httpclient.HttpStatus;  import org.apache.commons.httpclient.methods.GetMethod;   public class MyClient {       public static void main(String[] args) throws Exception {          go("http://localhost:9000/ws/jaxrs/customer/1/info");          go("http://localhost:9000/ws/jaxrs/customer/search?name=abc");      }            private static void go(String url) throws Exception {          HttpClient client = new HttpClient();          GetMethod method = new GetMethod(url);          int statusCode = client.executeMethod(method);          if (statusCode != HttpStatus.SC_OK) {              System.err.println("Method failed: " + method.getStatusLine());          }          byte[] responseBody = method.getResponseBody();          System.out.println(new String(responseBody));      }  }

6.测试

首先运行MyServer类，然后运行MyClient类来验证Web Service。

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