僅參考, 基於HttpClient 的Http請求工具類
public class HttpClientUtil {
private static Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);
public static String doGet(String url, Map<String, String> param) {
// 創建http對象
CloseableHttpClient httpclient = HttpClients.createDefault();
CloseableHttpResponse response = null;
String resultString = "";
try {
// 組裝URL===start
URIBuilder builder = new URIBuilder(url);
if (param != null) {
for (String key : param.keySet()) {
builder.addParameter(key, param.get(key));
}
}
URI uri = builder.build();
// 組裝URL===end
HttpGet httpGet = new HttpGet(uri);// 創建請求對象
response = httpclient.execute(httpGet);// 發送請求
if (response.getStatusLine().getStatusCode() == 200) {// 判斷返回狀態是否爲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;
}
public static String doGet(String url) {
return doGet(url, null);
}
public static String doPost(String url, Map<String, String> param) {
logger.info("doPost, url:{}, param:{}",url, JSONUtils.toJSONString(param));
// 創建Httpclient對象
CloseableHttpClient httpClient = HttpClients.createDefault();
CloseableHttpResponse response = null;
String resultString = "";
try {
// 創建Http Post請求
HttpPost httpPost = new HttpPost(url);
// 創建參數列表
if (param != null) {
List<NameValuePair> paramList = new ArrayList<>();
for (String key : param.keySet()) {
paramList.add(new BasicNameValuePair(key, param.get(key)));
}
// 模擬表單
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList, HTTP.UTF_8);
httpPost.setEntity(entity);
}
// 執行http請求
response = httpClient.execute(httpPost);
resultString = EntityUtils.toString(response.getEntity(), "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
response.close();
} catch (IOException e) {
logger.info("doPost param IOException", e);
e.printStackTrace();
}
}
return resultString;
}
public static String doPost(String url) {
return doPost(url, null);
}
public static String doPostJson(String url, String json) {
// 創建Httpclient對象
CloseableHttpClient httpClient = HttpClients.createDefault();
CloseableHttpResponse response = null;
String resultString = "";
try {
// 創建Http Post請求
HttpPost httpPost = new HttpPost(url);
// 創建請求內容
StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
httpPost.setEntity(entity);
// 執行http請求
response = httpClient.execute(httpPost);
resultString = EntityUtils.toString(response.getEntity(), "utf-8");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
response.close();
} catch (IOException e) {
logger.info("doPost json IOException", e);
e.printStackTrace();
}
}
return resultString;
}
}