REST

import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class RestClient {
    public final static String METHOD_GET="GET";
    public final static String METHOD_PUT="PUT";
    public final static String METHOD_DELETE="DELETE";
    public final static String METHOD_POST="POST";
    
    public static void rest(String serviceUrl,String parameter,String restMethod){
        try {
              URL url= new URL(serviceUrl);
              HttpURLConnection con = (HttpURLConnection)url.openConnection();
              con.setRequestMethod(restMethod);
              //如果请求方法为PUT,POST和DELETE设置DoOutput为真
              if(!RestClient.METHOD_GET.equals(restMethod)){
                  con.setDoOutput(true);
                  if(!RestClient.METHOD_DELETE.equals(restMethod)){ //请求方法为PUT或POST时执行
                      OutputStream os = con.getOutputStream(); 
                      os.write(parameter.getBytes("UTF-8")); 
                      os.close(); 
                  }
              }
              else{ //请求方法为GET时执行
                  InputStream in= con.getInputStream();              
                  byte[] b= new byte[1024];
                  int result= in.read(b);
                  while( result!=-1){
                      System.out.write(b,0,result);
                      result= in.read(b);
                  }
              }
              System.out.println(con.getResponseCode()+":"+con.getResponseMessage());
        } catch ( Exception e ) {
             
            throw new RuntimeException(e );
        }

    }

    public static void main(String args[]){
        //GET
        rest("http://localhost:8081/sqlrest/PRODUCT/4",null,RestClient.METHOD_GET);
        
        //PUT
        String put="<?xml version=\"1.0\" encoding=\"UTF-8\" ?><PRODUCT xmlns:xlink=\"http://www.w3.org/1999/xlink\"><NAME>Chair Shoe</NAME>"
  +"<PRICE>24.8</PRICE></PRODUCT>";
        rest("http://localhost:8081/sqlrest/PRODUCT/395",put,RestClient.METHOD_PUT);
        
        //POST
        String post="<?xml version=\"1.0\" encoding=\"UTF-8\" ?><PRODUCT xmlns:xlink=\"http://www.w3.org/1999/xlink\">"
      +"<PRICE>98</PRICE></PRODUCT>";
        rest("http://localhost:8081/sqlrest/PRODUCT/395",post,RestClient.METHOD_POST);
        
        //DELETE
        rest("http://localhost:8081/sqlrest/PRODUCT/395",null,RestClient.METHOD_DELETE);
    }

}
服务端使用sqlrest