webservice restful类型接口的调用实例

因为项目是采用maven搭建的，所以先把所需要的jar包定义进来，我是采用apache的httpComponents第三方技术！如下：

            <!-- httpcomponents -->
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpcore</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpmime</artifactId>
		</dependency>
		<dependency>
			<groupId>jaxen</groupId>
			<artifactId>jaxen</artifactId>
		</dependency>

其次就是写调用客户端（get方式）：

        @Test
	public void getOrderList() throws Exception {

		CloseableHttpClient httpClient = HttpClients.createDefault();

		HttpGet httpGet = new HttpGet("接口请求路径……");

     httpGet.setHeader("Accept", "application/json");//如果要返回json结果，则需要设置此请求头信息

CloseableHttpResponse httpResponse;
		try {
			httpResponse = httpClient.execute(httpGet);
			HttpEntity entity = httpResponse.getEntity();
			System.out.println(IOUtils.toString(entity.getContent()));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

其次就是写调用客户端（POST方式）：

导包都是一样，就是发送请求的实体不同 如下：

        /* 获取用户留资信息接口：GetUserLeaveMsg */
	@Test
	public void GetUserLeaveMsg() throws Exception {

		CloseableHttpClient httpClient = HttpClients.createDefault();
		HttpPost httpPost = new HttpPost(URL + "?method=GetUserLeaveMsg");
                

               //POST传递方式 
		List<NameValuePair> nvps = new ArrayList<NameValuePair>();
		nvps.add(new BasicNameValuePair("date", "2014-12-01"));// yyyy-MM-dd
		nvps.add(new BasicNameValuePair("last_leave_msg_id", "0"));
		nvps.add(new BasicNameValuePair("CurPage", "1"));
		nvps.add(new BasicNameValuePair("PageSize", "50"));

		httpPost.setHeader("Accept", "application/json");
		httpPost.setEntity(new UrlEncodedFormEntity(nvps));
		CloseableHttpResponse httpResponse;
		try {
			httpResponse = httpClient.execute(httpPost);
			HttpEntity entity = httpResponse.getEntity();
			System.out.println(IOUtils.toString(entity.getContent()));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

还会有一种就是传Json的方式，我也一并罗列出来了供大家参考：

        /**
	 * 新闻资讯类接口
	 * 
	 * @throws Exception
	 * @throws UnsupportedEncodingException
	 */
	@Test
	public void newsTest() throws Exception {
		CloseableHttpClient httpClient = HttpClients.createDefault();
		HttpPost httpPost = new HttpPost("接口请求url……");
		httpPost.addHeader("Authorization", "Basic " + sign);
		httpPost.setHeader("Accept", "application/json");
		httpPost.setHeader("Content-Type", "application/json");

		CloseableHttpResponse httpResponse;
		try {

                     //通过alibaba的fastJson的jar包来转成json所需要的数据格式
			Map<String, Object> params = new HashMap<String, Object>();
			List<String> list = new ArrayList<String>();
			list.add("2348");
			list.add("163");

                        params.put("DealerId", 66934);
			params.put("TypeId", 1);
			params.put("SeriesIds", list);
			
			String data = JSON.toJSONString(params);
			System.out.println("data-->" + data);

			/* 构造请求数据 */
			StringEntity myEntity = new StringEntity(data, ContentType.APPLICATION_JSON);
			/* 设置请求体 */
			httpPost.setEntity(myEntity);
			httpResponse = httpClient.execute(httpPost);
			HttpEntity entity = httpResponse.getEntity();
			System.out.println(httpPost.getURI().toString());

			System.out.println(IOUtils.toString(entity.getContent()));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

就先写到这里了，还有通过SOAP协议定义的接口就下回再写，写得比较仓促难免会出错，如发现错误或者需要共同讨论的地方，发送信息到QQ：2481942148，望能给大家带来一些帮助！