http协议调用第三方接口（post get方法）

最新推荐文章于 2022-10-21 14:59:53 发布

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本文介绍了一个使用Java实现的HTTP客户端工具类，包括GET和POST请求的方法。该工具类使用了PoolingHttpClientConnectionManager来管理连接池，提高了并发请求的效率，并设置了超时时间和响应头，以适应JSON格式的数据交互。

public class PostUtil {
private static CloseableHttpClient httpClient;

static {
PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
cm.setMaxTotal(100);
cm.setDefaultMaxPerRoute(20);
cm.setDefaultMaxPerRoute(50);
httpClient = HttpClients.custom().setConnectionManager(cm).build();
}

public static String get(String url) {
CloseableHttpResponse response = null;
BufferedReader in = null;
String result = "";
try {
HttpGet httpGet = new HttpGet(url);
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(30000).setConnectionRequestTimeout(30000).setSocketTimeout(30000).build();
httpGet.setConfig(requestConfig);
httpGet.setConfig(requestConfig);
httpGet.addHeader("Content-type", "application/json; charset=utf-8");
httpGet.setHeader("Accept", "application/json");
response = httpClient.execute(httpGet);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
result = sb.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (null != response) {
response.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}

public static String post(String url, String jsonString) {
CloseableHttpResponse response = null;
BufferedReader in = null;
String result = "";
try {
HttpPost httpPost = new HttpPost(url);
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(30000).setConnectionRequestTimeout(30000).setSocketTimeout(30000).build();
httpPost.setConfig(requestConfig);
httpPost.setConfig(requestConfig);
httpPost.addHeader("Content-type", "application/json; charset=utf-8");
httpPost.setHeader("Accept", "application/json");
httpPost.setEntity(new StringEntity(jsonString, Charset.forName("UTF-8")));
response = httpClient.execute(httpPost);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
result = sb.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (null != response) {
response.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}