java获取接口实现类 java获取接口数据

//get请求方式
private String getInfo(Map<String, Object> params,String URL) {
 // 创建Httpclient对象
		CloseableHttpClient httpclient = HttpClients.createDefault();
		CloseableHttpResponse response = null;
		String resultString=null;
		try {
			// 创建uri
			URIBuilder builder = new URIBuilder(URL);
			if (params != null) {
				for (String key : params.keySet()) {
					builder.addParameter(key, params.get(key).toString());
				}
			}
			URI uri = builder.build();
			// 创建http GET请求
			HttpGet httpGet = new HttpGet(uri);
			// 执行请求
			response = httpclient.execute(httpGet);
			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == 200) {
				resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (response != null) {
					response.close();
				}
				httpclient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return resultString;
	}
 
//post请求方式
private String getInfo(Map<String, Object> params, String URL) {
		// 创建Httpclient对象
		CloseableHttpClient httpclient = HttpClients.createDefault();
		CloseableHttpResponse response = null;
		String resultString = null;
		try {
			// 创建uri
			URIBuilder builder = new URIBuilder(URL);
			if (params != null) {
				for (String key : params.keySet()) {
					builder.addParameter(key, params.get(key).toString());
				}
			}
			URI uri = builder.build();
			// 创建http POST请求
			HttpPost httpPost = new HttpPost(uri);			// 执行请求
			response = httpclient.execute(httpPost);
			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == 200) {
				resultString = EntityUtils.toString(response.getEntity(),"UTF-8");
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (response != null) {
					response.close();
				}
				httpclient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return resultString;
	} 
//传送json类型参数的post请求
	private String getCarMapInfo(String json, String URL) {
		// 创建Httpclient对象
		CloseableHttpClient httpClient = HttpClients.createDefault();
		CloseableHttpResponse response = null;
		String resultString = null;
		try {
			// 创建Http Post请求
			HttpPost httpPost = new HttpPost(URL);
			// 创建请求内容
			StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
			httpPost.setEntity(entity);

			// 执行http请求
			response = httpClient.execute(httpPost);
			resultString = EntityUtils.toString(response.getEntity(), "utf-8");
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				response.close();
				httpClient.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return resultString;
	}
    在园中学习的大白