Httpclient工具类封装
配置连接工厂
package org.common.framework.component.httpclient.config;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
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.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.common.framework.component.httpclient.consts.HttpConstants;
/**
* httpclient连接工厂
*/
public class HttpClientConnectFactory {
private static PoolingHttpClientConnectionManager cm = null;
/**
* 初始化连接池
*/
static {
SSLContext sslcontext;
try {
sslcontext = createIgnoreVerifySSL();
ConnectionSocketFactory plainsf = PlainConnectionSocketFactory.getSocketFactory();
Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
.register(HttpConstants.HTTP_PROTOCOL, plainsf)
.register(HttpConstants.HTTPS_PROTOCOL,getSSLConnectionSocketFactory(sslcontext))
.build();
cm = new PoolingHttpClientConnectionManager(registry);
cm.setMaxTotal(HttpConstants.MAX_TOTAL_POOL);
cm.setDefaultMaxPerRoute(HttpConstants.MAX_CONPERROUTE);
} catch (Exception e) {
e.getStackTrace();
}
}
/**
* 获取httpclient连接
* @return
*/
public static CloseableHttpClient getHttpClient() {
RequestConfig requestConfig = RequestConfig.custom()
.setConnectionRequestTimeout(HttpConstants.CONNECTION_REQUEST_TIMEOUT)
.setConnectTimeout(HttpConstants.CONNECT_TIMEOUT)
.setSocketTimeout(HttpConstants.SOCKET_TIMEOUT)
.build();
CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(cm)
.setDefaultRequestConfig(requestConfig)
.setRetryHandler(new MyHttpRequestRetryHandler())
.setConnectionManagerShared(true)
.build();
return httpClient;
}
/**
* 创建sslcontext
* @return
* @throws NoSuchAlgorithmException
* @throws KeyManagementException
*/
private static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
SSLContext sc = SSLContext.getInstance(HttpConstants.SSL_CONTEXT);
X509TrustManager trustManager = new X509TrustManager(){
public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sc.init(null, new TrustManager[] { trustManager }, null);
return sc;
}
/**
* getSSLConnectionSocketFactory
* @param sslcontext
* @return
*/
private static ConnectionSocketFactory getSSLConnectionSocketFactory(SSLContext sslcontext) {
return new SSLConnectionSocketFactory(sslcontext,NoopHostnameVerifier.INSTANCE);
}
}
配置重试处理
package org.common.framework.component.httpclient.config;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.UnknownHostException;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLHandshakeException;
import org.apache.http.HttpEntityEnclosingRequest;
import org.apache.http.HttpRequest;
import org.apache.http.NoHttpResponseException;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
import org.apache.http.protocol.HttpContext;
/**
* 定义重试处理机制
*/
public class MyHttpRequestRetryHandler extends DefaultHttpRequestRetryHandler {
private int retry_times = 3;
public MyHttpRequestRetryHandler() {
super();
}
/**
* 覆盖默认的重试次数及重试标志
* @param retry_times
* @param retryFlag
*/
public MyHttpRequestRetryHandler(int retry_times) {
super();
this.retry_times = retry_times;
}
/**
* 检查重试次数 检查连接异常原因
*/
@Override
public boolean retryRequest(IOException exception, int executionCount, HttpContext context) {
if (executionCount >= retry_times) {// 如果已经重试了3次，就放弃
return false;
}
if (exception instanceof NoHttpResponseException) {// 如果服务器丢掉了连接，那么就重试
return true;
}
if (exception instanceof InterruptedIOException) {// 超时
return true;
}
if (exception instanceof SSLHandshakeException) {// 不要重试SSL握手异常
return false;
}
if (exception instanceof UnknownHostException) {// 目标服务器不可达
return false;
}
if (exception instanceof ConnectTimeoutException) {// 连接被拒绝
return false;
}
if (exception instanceof SSLException) {// ssl握手异常
return false;
}
HttpClientContext clientContext = HttpClientContext.adapt(context);
HttpRequest request = clientContext.getRequest();
// 如果请求是幂等的，就再次尝试
if (!(request instanceof HttpEntityEnclosingRequest)) {
return true;
}
return false;
}
}
定义http工具类
依赖-CustomHttpMethod
package org.common.framework.component.httpclient.consts;
/**
* 自定义请求类型
*/
public enum CustomHttpMethod {
GET, POST, DELETE, PUT
}
依赖-HttpConstants
package org.common.framework.component.httpclient.consts;
/**
* http请求常量
*/
public interface HttpConstants {
/**
* 连接池最大连接数
*/
int MAX_TOTAL_POOL = 256;
/**
* 每路连接最多连接数
*/
int MAX_CONPERROUTE = 32;
/**
* socket超时时间
*/
int SOCKET_TIMEOUT = 60 * 1000;
/**
* 连接请求超时时间
*/
int CONNECTION_REQUEST_TIMEOUT = 5 * 1000;
/**
* 连接超时时间
*/
int CONNECT_TIMEOUT = 5 * 1000;
/**
* http协议
*/
String HTTP_PROTOCOL = "http";
/**
* https协议
*/
String HTTPS_PROTOCOL = "https";
/**
* sslv3
*/
String SSL_CONTEXT = "SSLv3";
/**
* utf-8编码
*/
String CHARSET_UTF_8 = "UTF-8";
/**
* application/json
*/
String CONTENT_TYPE_JSON = "application/json";
/**
* content-type
*/
String CONTENT_TYPE = "Content-Type";
}
请求配置类-HttpRequestConfigUtil
package org.common.framework.component.httpclient.util;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.StringEntity;
import org.common.framework.component.httpclient.consts.HttpConstants;
/**
* 请求配置的公共
*/
public class HttpRequestConfigUtil {
/**
* 返回默认的类容类型【application/json】
*
* @return
*/
protected static String getDefaultContentType() {
return HttpConstants.CONTENT_TYPE_JSON;
}
/**
* 设置默认的content-type: application/json
*/
protected static void setContentTypeApplicationJson(HttpRequestBase httpBase) {
httpBase.setHeader(HttpConstants.CONTENT_TYPE, HttpConstants.CONTENT_TYPE_JSON);
}
/**
* 设置content-Type
*/
protected static void setContentType(HttpRequestBase httpBase, String contentType) {
httpBase.setHeader(HttpConstants.CONTENT_TYPE, contentType);
}
/**
* 设置请求体
*/
protected static void setHttpBody(HttpEntityEnclosingRequestBase httpRequest, String body) {
if(StringUtils.isBlank(body)) {
return;
}
StringEntity entity = new StringEntity(body, HttpConstants.CHARSET_UTF_8);
entity.setContentEncoding(HttpConstants.CHARSET_UTF_8);
entity.setContentType(HttpConstants.CHARSET_UTF_8);
httpRequest.setEntity(entity);
}
/**
* 设置头部参数
*
* @param httpBase
* @param map
*/
protected static void setHeader(HttpRequestBase httpBase, Map<String, String> map) {
if (map == null || map.size() == 0) {
return;
}
for (String item : map.keySet()) {
httpBase.setHeader(item, map.get(item));
}
}
}
请求发送类-BaseHttpUtil
package org.common.framework.component.httpclient.util;
import java.lang.reflect.Type;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;
import org.common.framework.component.httpclient.config.HttpClientConnectFactory;
import org.common.framework.component.httpclient.consts.CustomHttpMethod;
import com.alibaba.fastjson.JSON;
/**
* http抽象类，继承工具类的公共函数
* @author Administrator
*
*/
public class BaseHttpUtil extends HttpRequestConfigUtil {
/**
* 创建请求对象 httpRequestBase
*
* @param Method
* @param url
* @return
*/
protected static HttpRequestBase createHttpRequestBase(CustomHttpMethod Method, String url) {
switch (Method) {
case POST:
return new HttpPost(url);
case GET:
return new HttpGet(url);
case PUT:
return new HttpPut(url);
case DELETE:
return new HttpDelete(url);
default:
return new HttpGet(url);
}
}
/**
* send请求
* @param <T>
* @param url
* @param header
* @param content
* @param type
* @return
*/
protected static String exec( String url, CustomHttpMethod method, Map<String, String> header, String contentType, String body) {
CloseableHttpClient httpClient = HttpClientConnectFactory.getHttpClient();
HttpRequestBase httpBase = createHttpRequestBase(method, url);
setHeader(httpBase, header);
setContentType(httpBase, contentType);
if (httpBase instanceof HttpEntityEnclosingRequestBase) {
setHttpBody((HttpEntityEnclosingRequestBase) httpBase, body);
}
CloseableHttpResponse response = null;
try {
response = httpClient.execute(httpBase);
response.getStatusLine().getStatusCode();
HttpEntity httpEntity = response.getEntity();
return EntityUtils.toString(httpEntity,"utf-8");
}catch (Exception e) {
e.printStackTrace();
System.err.println("httpGetUtil error : {}" + e.getMessage());
}
return JSON.toJSONString(response);
}
/**
* 处理响应值
* @param <T>
* @param <B>
* @param apiResult
* @param defaultResult
* @return
*/
@SuppressWarnings("unchecked")
public static <T> T handleResponse(String apiResult, T defaultResult, Type type) {
if(StringUtils.isBlank(apiResult)) {
return defaultResult;
}
try {
return (T)JSON.parseObject(apiResult, type);
} catch (Exception e) {
return defaultResult;
}
}
}
多参工具类-MultiHttpUtil
package org.common.framework.component.httpclient.util;
import java.util.Map;
import org.common.framework.component.httpclient.consts.CustomHttpMethod;
/**
* Http 多种 请求方式定义
*/
public class MultiHttpUtil extends BaseHttpUtil {
/**
* exec请求，通过以下参数获取数据
* @param url 请求地址
* @return
*/
public static String exec(CustomHttpMethod customHttpMethod, String url) {
return exec(customHttpMethod, url, null, getDefaultContentType(), null);
}
/**
* exec请求，通过以下参数获取数据
* @param url 请求地址
* @param header 请求头部参数
* @return
*/
public static String exec(CustomHttpMethod customHttpMethod, String url, Map<String, String> header) {
return exec(customHttpMethod, url, header, getDefaultContentType(), null);
}
/**
* exec请求，通过以下参数获取数据 content-Type 默认 application/json
* @param url 请求地址
* @param body 请求内容
* @return
*/
public static String exec(CustomHttpMethod customHttpMethod, String url, String body) {
return exec(customHttpMethod, url, null, getDefaultContentType(), body);
}
/**
* exec请求，通过以下参数获取数据
* @param url 请求地址
* @param contentType 请求内容体类型
* @param body 请求内容
* @return
*/
public static String exec(CustomHttpMethod customHttpMethod, String url, String contentType, String body) {
return exec(customHttpMethod, url, null, contentType, body);
}
/**
* exec请求，通过以下参数获取数据 content-Type 默认 application/json
* @param url 请求地址
* @param header 请求头部参数
* @param body 请求内容
* @return
*/
public static String exec(CustomHttpMethod customHttpMethod, String url, Map<String, String> header, String body) {
return exec(customHttpMethod, url, header, getDefaultContentType(), body);
}
/**
* exec请求，通过以下参数获取数据
* @param url 请求地址
* @param header 请求头部参数
* @param contentType 请求内容体类型
* @param body 请求内容
* @return
*/
public static String exec(CustomHttpMethod customHttpMethod, String url, Map<String, String> header, String contentType, String body) {
return exec(url, customHttpMethod, header, contentType, body);
}
}
pom
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.nblh.framework</groupId>
<artifactId>common-utils</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.7</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.6</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.30</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.0</version>
</plugin>
</plugins>
</build>
</project>
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