http post请求接口传输json

叁歲伎倆 2022-06-12 09:13 236阅读 0赞

/**
     * http post请求
     */
    
    public class HttpRequest {
    private static PoolingClientConnectionManager conMgr = null; import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.HttpStatus;
    import org.apache.http.NameValuePair;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.entity.UrlEncodedFormEntity;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.client.params.ClientPNames;
    import org.apache.http.conn.routing.HttpRoute;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
    import org.apache.http.impl.conn.PoolingClientConnectionManager;
    import org.apache.http.message.BasicNameValuePair;
    import org.apache.http.params.BasicHttpParams;
    import org.apache.http.params.CoreConnectionPNames;
    import org.apache.http.params.HttpParams;
    import org.apache.http.util.EntityUtils;
    import org.springframework.stereotype.Component;
    
    import java.io.IOException;
    import java.io.UnsupportedEncodingException;
    import java.net.URLEncoder;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Map;
    import java.util.Set;
    
    
    
    public class HttpRequest {
        private static PoolingClientConnectionManager conMgr = null;
        private static HttpParams param = null;
    
        static {
             param = new BasicHttpParams();
            Integer CONNECTION_TIMEOUT = 4 * 10000; //设置请求超时
            Integer SO_TIMEOUT = 4 * 10000; //设置等待数据超时时间
            Long CONN_MANAGER_TIMEOUT = 5000L; //连接不够用的时候等待超时时间
            param.setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, CONNECTION_TIMEOUT);
            param.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, SO_TIMEOUT);
            param.setLongParameter(ClientPNames.CONN_MANAGER_TIMEOUT, CONN_MANAGER_TIMEOUT);
            param.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, true);
            conMgr = new PoolingClientConnectionManager();
            conMgr.setMaxTotal(200);
            conMgr.setDefaultMaxPerRoute(500);
    
        }
    
        public static String post(String url, Map<String, String> params) throws UnsupportedEncodingException {
    
            DefaultHttpClient httpClient = new DefaultHttpClient(conMgr);
            httpClient.setParams(param);
            httpClient.setHttpRequestRetryHandler(new DefaultHttpRequestRetryHandler(0, false));
            HttpResponse httpResponse = null;
            List<NameValuePair> nvps = new ArrayList<NameValuePair>();
            Set<String> keySet = params.keySet();
            for (String key : keySet) {
                nvps.add(new BasicNameValuePair(key, params.get(key)));
            }
            UrlEncodedFormEntity uefEntity = new UrlEncodedFormEntity(nvps, "UTF-8");
            HttpPost post = new HttpPost(url);
            String response = null;
            try {
                post.setEntity(uefEntity);
                httpResponse = httpClient.execute(post);
                // response实体
                HttpEntity entity = httpResponse.getEntity();
                if (null != entity) {
                    int statusCode = httpResponse.getStatusLine().getStatusCode();
                    if (statusCode == HttpStatus.SC_OK) {
                        response = EntityUtils.toString(entity, "utf-8");
                        return response;
                    }
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                post.releaseConnection();
            }
            return response;
        }
    }