CXF restful webserice同时支持几种协议 json, xml... 很简单

CXF restful webserice同时支持几种协议 json, xml... 很简单

1. 假设我们有个服务  (都是从别处拿来的代码)

mport javax.ws.rs. * ;
import  javax.ws.rs.core.Response;


@Path(value  =   " /student/{id} " )
public   interface  StudentService
{
    @GET
    @Path(value  =   " /info " )
    Student getStudent(@PathParam( " id " )  long  id, @QueryParam( " name " )
    String name);

    @GET
    @Path(value  =   " /info2 " )
    UserResponse getStudent(@QueryParam( " name " ) String name);
}

服务实现类:

import  javax.ws.rs.core.Response;
import  java.text.ParseException;
import  java.text.SimpleDateFormat;

public   class  StudentServiceImpl  implements  StudentService
{
     public  Student getStudent( long  id, String name)
    {
        Student s  =   new  Student();
        s.setId(id);
        s.setName(name);
         try
        {
            s.setBirthday( new  SimpleDateFormat( " yyyy-MM-dd " ).parse( " 1983-04-26 " ));
        }
         catch  (ParseException e)
        {
            e.printStackTrace();
        }
         return  s;
    }

     public  Response getStudent1(String name)
    {
        Student s  =   new  Student();
        s.setId( 1 );
        s.setName(name);
         try
        {
            s.setBirthday( new  SimpleDateFormat( " yyyy-MM-dd " ).parse( " 1983-04-26 " ));
        }
         catch  (ParseException e)
        {
            e.printStackTrace();
        }

         return  Response.ok(s).build();
         // return s;
    }

     public  UserResponse getStudent(String name)
    {
        Student s  =   new  Student();
        s.setId( 1 );
        s.setName(name);
         try
        {
            s.setBirthday( new  SimpleDateFormat( " yyyy-MM-dd " ).parse( " 1983-04-26 " ));
        }
         catch  (ParseException e)
        {
            e.printStackTrace();
        }

         return   new  UserResponse( " ok " , s);
    }

返回数据包装类

import  javax.xml.bind.annotation. * ;

@XmlRootElement(name  =   " Response " )
@XmlAccessorType(XmlAccessType.FIELD)
public   class  UserResponse
{
     private  String status;

     private  Student data;

     public  UserResponse()
    {
    }

     public  UserResponse(String status, Student data)
    {
         this .status  =  status;
         this .data  =  data;
    }

     public  String getStatus()
    {
         return  status;
    }

     public   void  setStatus(String status)
    {
         this .status  =  status;
    }

     public  Object getData()
    {
         return  data;
    }

     public   void  setData(Student data)
    {
         this .data  =  data;
    }
}

普通类

import  javax.xml.bind.annotation.XmlAccessType;
import  javax.xml.bind.annotation.XmlAccessorType;
import  javax.xml.bind.annotation.XmlRootElement;
import  java.util.Date;

@XmlRootElement(name  =   " Student " )
@XmlAccessorType(XmlAccessType.FIELD)
public   class  Student
{
     private   long  id;
     private  String name;
     private  Date birthday;

     public   long  getId()
    {
         return  id;
    }

     public   void  setId( long  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;
    }
}

Spring 服务声明

     < import  resource ="classpath:META-INF/cxf/cxf.xml" />
     < import  resource ="classpath:META-INF/cxf/cxf-extension-soap.xml" />
     < import  resource ="classpath:META-INF/cxf/cxf-servlet.xml" />
     < import  resource ="classpath:META-INF/cxf/cxf-extension-jaxrs-binding.xml" />


     < bean  id ="rsStudentServiceImpl"  class ="ex3.StudentServiceImpl"   />

     < jaxrs:server  id ="test"  address ="/student"   >
         < jaxrs:serviceBeans >
             < ref  bean ="rsStudentServiceImpl"   />
         </ jaxrs:serviceBeans >
         
         <!-- 这里设置了对应关系, 按理说默认就应该是这样, 你可以试试. 当然可以自定义  -->
         < jaxrs:extensionMappings >
           < entry  key ="json"  value ="application/json" />
           < entry  key ="xml"  value ="application/xml" />
         </ jaxrs:extensionMappings >
     </ jaxrs:server >

web.xml 就不贴了, 和普通的一样.



2. 访问方法有3种, 可以实现获取不同格式的内容.

http://localhost:8080/student/student/3/info2.json?name=abcss
http://localhost:8080/student/student/3/info2.xml?name=abcss

http://localhost:8080/student/student/3/info2?name=abcss&_type=xml
http://localhost:8080/student/student/3/info2?name=abcss&_type=json

还有一种办法就是在请求时设置Accept:

        HttpGet get  =   new  HttpGet(
                 " http://127.0.0.1:8080/student/student/3/info2?name=Fetion " );
        HttpClient httpclient  =   new  DefaultHttpClient();

        get.addHeader( " ACCEPT " ,  " application/xml " );

        HttpResponse response  =  httpclient.execute(get);

        StatusLine st  =  response.getStatusLine();

    InputStream ins  =  response.getEntity().getContent();
     byte [] b  =   new   byte [ 1024 ];
    StringBuilder sb  =   new  StringBuilder();
     while  (ins.read(b)  !=   - 1 )
    {
        sb.append( new  String(b,  " UTF-8 " ));
    }
    System.out.println(sb.toString());

简单吧.... 呵呵