• HttpUtils带连接池

    准备祖传了，有问题欢迎大家指正。

    HttpUtil

    
import com.txlc.cloud.commons.exception.ServiceException;
import com.txlc.dwh.common.constants.MyErrorCode;
import org.ssssssss.script.annotation.Comment;

import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

/**
 * @author 
 *
 */
public class HttpUtil {
	public static final String UTF_8 = "UTF-8";
	private static final PooledHttpClientAdaptor adaptor = new PooledHttpClientAdaptor();

	@Comment("http get")
	public static String doGet(@Comment("url")String apiUrl, @Comment("请求头，没有请传null")Map<String, String> headers, @Comment("url参数")Map<String, Object> params) {
		return adaptor.doGet(apiUrl, headers, params);
	}
	public static String doFormPost(@Comment("url")String apiUrl, @Comment("请求头，没有请传null")Map<String, String> headers, @Comment("form参数")Map<String, Object> params) {
		return adaptor.doPost(apiUrl, headers, params);
	}
	public static String doJsonPost(@Comment("url")String apiUrl,@Comment("请求头，没有请传null") Map<String, String> headers, @Comment("json参数")String jsonParam) {
		try {
			return adaptor.doPost(apiUrl, headers, jsonParam);
		} catch (UnsupportedEncodingException e) {
			throw new ServiceException(MyErrorCode.HTTP_PARAM_JSON.getStatus(),MyErrorCode.HTTP_PARAM_JSON.getMsg());
		}
	}

	public static String doDelete(String url, Map<String, String> headers, HashMap<String, Object> params) {
		return adaptor.doDelete(url, headers, params);
	}
	
	public static String getUrlWithParams(String url, Map<String, Object> params) {
        boolean first = true;
        StringBuilder sb = new StringBuilder(url);
        for (String key : params.keySet()) {
            char ch = '&';
            if (first == true) {
                ch = '?';
                first = false;
            }
            String value = params.get(key).toString();
            try {
                String sval = URLEncoder.encode(value, UTF_8);
                sb.append(ch).append(key).append("=").append(sval);
            } catch (UnsupportedEncodingException e) {
            }
        }
        return sb.toString();
    }
	
	public static Map<String, Object> convent2Map(Object b) {
		Map<String, Object> params = new HashMap<>();
		for(Field field: b.getClass().getDeclaredFields()) {
			field.setAccessible(true);
			Object val = null;
			try {
				val = field.get(b);
			} catch (IllegalArgumentException | IllegalAccessException e) {
			}
			if(val != null) {
				params.put(field.getName(), val);
			}
		}
		return params;
	}

}



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    PooledHttpClientAdaptor

    
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import javax.net.ssl.SSLContext;

import cn.hutool.core.util.StrUtil;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.fastjson.JSON;

/**
 * @author JGMa
 *
 */
public class PooledHttpClientAdaptor {
	private static final Logger logger = LoggerFactory.getLogger(PooledHttpClientAdaptor.class);
	 
    private static final int DEFAULT_POOL_MAX_TOTAL = 200;
    private static final int DEFAULT_POOL_MAX_PER_ROUTE = 200;
 
    private static final int DEFAULT_CONNECT_TIMEOUT = 10000;
    private static final int DEFAULT_CONNECT_REQUEST_TIMEOUT = 10000;
    private static final int DEFAULT_SOCKET_TIMEOUT = 60000;
    
    private PoolingHttpClientConnectionManager gcm = null;
 
    private CloseableHttpClient httpClient = null;
 
    private IdleConnectionMonitorThread idleThread = null;
 
    // 连接池的最大连接数
    private final int maxTotal;
    // 连接池按route配置的最大连接数
    private final int maxPerRoute;
 
    // tcp connect的超时时间
    private final int connectTimeout;
    // 从连接池获取连接的超时时间
    private final int connectRequestTimeout;
    // tcp io的读写超时时间
    private final int socketTimeout;
 
    public PooledHttpClientAdaptor() {
        this(
                PooledHttpClientAdaptor.DEFAULT_POOL_MAX_TOTAL,
                PooledHttpClientAdaptor.DEFAULT_POOL_MAX_PER_ROUTE,
                PooledHttpClientAdaptor.DEFAULT_CONNECT_TIMEOUT,
                PooledHttpClientAdaptor.DEFAULT_CONNECT_REQUEST_TIMEOUT,
                PooledHttpClientAdaptor.DEFAULT_SOCKET_TIMEOUT
        );
    }
 
    public PooledHttpClientAdaptor(int maxTotal, int maxPerRoute, int connectTimeout, int connectRequestTimeout, int socketTimeout ) {
        this.maxTotal = maxTotal;
        this.maxPerRoute = maxPerRoute;
        this.connectTimeout = connectTimeout;
        this.connectRequestTimeout = connectRequestTimeout;
        this.socketTimeout = socketTimeout;
        
        final SSLConnectionSocketFactory sslsf;
        try {
            sslsf = new SSLConnectionSocketFactory(SSLContext.getDefault(),
                    NoopHostnameVerifier.INSTANCE);
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }
 
        Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.getSocketFactory())
                .register("https", sslsf)
                .build();
 
        this.gcm = new PoolingHttpClientConnectionManager(registry);
        this.gcm.setMaxTotal(this.maxTotal);
        this.gcm.setDefaultMaxPerRoute(this.maxPerRoute);
 
		RequestConfig requestConfig = RequestConfig.custom()
                .setConnectTimeout(this.connectTimeout)                     // 设置连接超时
                .setSocketTimeout(this.socketTimeout)                       // 设置读取超时
                .setConnectionRequestTimeout(this.connectRequestTimeout)    // 设置从连接池获取连接实例的超时
                .build();
 
        HttpClientBuilder httpClientBuilder = HttpClients.custom();
        httpClient = httpClientBuilder
                .setConnectionManager(this.gcm)
                .setDefaultRequestConfig(requestConfig)
                .build();
 
        idleThread = new IdleConnectionMonitorThread(this.gcm);
        idleThread.start();
 
    }
 
    public String doGet(String url) {
        return this.doGet(url, Collections.emptyMap(), Collections.emptyMap());
    }
 
    public String doGet(String url, Map<String, Object> params) {
        return this.doGet(url, Collections.emptyMap(), params);
    }
 
    public String doGet(String url, Map<String, String> headers,Map<String, Object> params) {
 
    	logger.debug("doGet url:" + url + ". headers :" + JSON.toJSONString(headers) + ". params :" + JSON.toJSONString(params));
        // *) 构建GET请求头
        String apiUrl = HttpUtil.getUrlWithParams(url, params);
        HttpGet httpGet = new HttpGet(apiUrl);
 
        // *) 设置header信息
        if ( headers != null && headers.size() > 0 ) {
            for (Map.Entry<String, String> entry : headers.entrySet()) {
                httpGet.addHeader(entry.getKey(), entry.getValue());
            }
        }
 
        CloseableHttpResponse response = null;
        try {
            response = httpClient.execute(httpGet);
            if (response == null || response.getStatusLine() == null) {
                return null;
            }
 
            int statusCode = response.getStatusLine().getStatusCode();
            if ( statusCode == HttpStatus.SC_OK ) {
                HttpEntity entityRes = response.getEntity();
                if (entityRes != null) {
                	return EntityUtils.toString(entityRes, HttpUtil.UTF_8);
                }
            }
            return null;
        } catch (IOException e) {
        	logger.error(e.getMessage(), e);
        } finally {
            if ( response != null ) {
                try {
                    response.close();
                } catch (IOException e) {
                }
            }
        }
        return null;
    }
 
    public String doPost(String apiUrl, Map<String, Object> params) {
        return this.doPost(apiUrl, Collections.emptyMap(), params);
    }

    public String doPost(String apiUrl,Map<String, String> headers,String jsonParam) throws UnsupportedEncodingException {
        logger.debug("doPost url:" + apiUrl + ". headers :" + JSON.toJSONString(headers) + ". jsonParam :" + jsonParam);
        HttpPost httpPost = new HttpPost(apiUrl);

        // 配置请求headers
        if ( headers != null && headers.size() > 0 ) {
            for (Map.Entry<String, String> entry : headers.entrySet()) {
                httpPost.addHeader(entry.getKey(), entry.getValue());
            }
        }

        // 配置请求参数
        if ( StrUtil.isNotBlank(jsonParam)) {
            StringEntity jsonEntity = new StringEntity(jsonParam);
            httpPost.setEntity(jsonEntity);
            httpPost.setHeader(HttpHeaders.CONTENT_TYPE, "application/json");
        }

        CloseableHttpResponse response = null;
        try {
            response = httpClient.execute(httpPost);
            if (response == null || response.getStatusLine() == null) {
                return null;
            }

            int statusCode = response.getStatusLine().getStatusCode();
            if ( statusCode == HttpStatus.SC_OK ) {
                HttpEntity entityRes = response.getEntity();
                if ( entityRes != null ) {
                    return EntityUtils.toString(entityRes, HttpUtil.UTF_8);
                }
            }
            return null;
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                }
            }
        }
        return null;

    }
 
    public String doPost(String apiUrl,  Map<String, String> headers, Map<String, Object> params) {
    	logger.debug("doPost url:" + apiUrl + ". headers :" + JSON.toJSONString(headers) + ". params :" + JSON.toJSONString(params));
        HttpPost httpPost = new HttpPost(apiUrl);
 
        // 配置请求headers
        if ( headers != null && headers.size() > 0 ) {
            for (Map.Entry<String, String> entry : headers.entrySet()) {
                httpPost.addHeader(entry.getKey(), entry.getValue());
            }
        }
 
        // 配置请求参数
        if ( params != null && params.size() > 0 ) {
            HttpEntity entityReq = getUrlEncodedFormEntity(params);
            httpPost.setEntity(entityReq);
        }

        CloseableHttpResponse response = null;
        try {
            response = httpClient.execute(httpPost);
            if (response == null || response.getStatusLine() == null) {
                return null;
            }
 
            int statusCode = response.getStatusLine().getStatusCode();
            if ( statusCode == HttpStatus.SC_OK ) {
                HttpEntity entityRes = response.getEntity();
                if ( entityRes != null ) {
                    return EntityUtils.toString(entityRes, HttpUtil.UTF_8);
                }
            }
            return null;
        } catch (IOException e) {
        	logger.error(e.getMessage(), e);
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException e) {
                }
            }
        }
        return null;
 
    }
    
    public String doDelete(String url,  Map<String, String> headers, Map<String, Object> params) {
    	logger.info("doDelete url:" + url + ". headers :" + JSON.toJSONString(headers) + ". params :" + JSON.toJSONString(params));
    	
        HttpDelete httpDelete = new HttpDelete(url);
 
        // *) 设置header信息
        if ( headers != null && headers.size() > 0 ) {
            for (Map.Entry<String, String> entry : headers.entrySet()) {
            	httpDelete.addHeader(entry.getKey(), entry.getValue());
            }
        }
 
        CloseableHttpResponse response = null;
        try {
            response = httpClient.execute(httpDelete);
            if (response == null || response.getStatusLine() == null) {
                return null;
            }
 
            int statusCode = response.getStatusLine().getStatusCode();
            if ( statusCode == HttpStatus.SC_OK ) {
                HttpEntity entityRes = response.getEntity();
                if (entityRes != null) {
                	return EntityUtils.toString(entityRes, HttpUtil.UTF_8);
                }
            }
            return null;
        } catch (IOException e) {
        	logger.error(e.getMessage(), e);
        } finally {
            if ( response != null ) {
                try {
                    response.close();
                } catch (IOException e) {
                }
            }
        }
        return null;
    }
 
    private HttpEntity getUrlEncodedFormEntity(Map<String, Object> params) {
        List<NameValuePair> pairList = new ArrayList<NameValuePair>(params.size());
        for (Map.Entry<String, Object> entry : params.entrySet()) {
            NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
            pairList.add(pair);
        }
        return new UrlEncodedFormEntity(pairList, Charset.forName(HttpUtil.UTF_8));
    }
 
    public void shutdown() {
        idleThread.shutdown();
    }
 
    // 监控有异常的链接
    private class IdleConnectionMonitorThread extends Thread {
 
        private final HttpClientConnectionManager connMgr;
        private volatile boolean exitFlag = false;
 
        public IdleConnectionMonitorThread(HttpClientConnectionManager connMgr) {
            this.connMgr = connMgr;
            setDaemon(true);
        }
 
        @Override
        public void run() {
            while (!this.exitFlag) {
                synchronized (this) {
                    try {
                        this.wait(2000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
                // 关闭失效的连接
                connMgr.closeExpiredConnections();
                // 可选的, 关闭30秒内不活动的连接
                connMgr.closeIdleConnections(30, TimeUnit.SECONDS);
            }
        }
 
        public void shutdown() {
            this.exitFlag = true;
            synchronized (this) {
                notify();
            }
        }
 
    }
 
}

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  • 原文地址：https://blog.csdn.net/JGMa_TiMo/article/details/132873129