rest入门实践之三：

第一步:建立webservice

 

 

第二步：后台代码：

@Path("hello")
public class HelloXml {

    @GET
    @Path("getHelloXml")
    @Produces("application/xml")
    @Consumes("text/plain")
    public String getHelloXml(@DefaultValue("1") @QueryParam("id") String id) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder dBuilder = factory.newDocumentBuilder();
        Document document = dBuilder.newDocument();
        
        
        //模拟
        Element root = document.createElement("湖北省");
        
        root.appendChild(document.createElement("武汉市"));
        root.appendChild(document.createElement("襄樊市"));
        
        root.setAttribute("id", id);
        
        document.appendChild(root);
        
        //输出
        StringWriter strWtr = new StringWriter();  
        StreamResult strResult = new StreamResult(strWtr);  
        TransformerFactory tfac = TransformerFactory.newInstance();  
        Transformer t = tfac.newTransformer();  
        t.transform(new DOMSource(document.getDocumentElement()),strResult);  
        String result = strResult.getWriter().toString();  
        System.out.println(result);  
        return result;      
    }
}

 

 

第三步：启动服务： 访问：http://localhost/RestPractice3/services/hello/getHelloXml?id=4

 

第四步：结果：