import java.io.IOException;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.exception.ExceptionUtils;
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.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @ClassName: HttpClientUtil
* @Description: httpClient工具类
* @author staystand
*/
public class HttpClientUtil {
private static final Logger logger = LoggerFactory.getLogger(HttpClientUtil.class);
/**
* @Title: doGet
* @Description: get方式
* @param url请求路径
* @param params参数
* @author staystand
*/
public static String doGet(String url, Map<String, String> params) {
// 返回结果
String result = "";
// 创建HttpClient对象
HttpClient httpClient = HttpClientBuilder.create().build();
HttpGet httpGet = null;
try {
// 拼接参数,可以用URIBuilder,也可以直接拼接在?传值,拼在url后面,如下--httpGet = new
// HttpGet(uri+"?id=123");
URIBuilder uriBuilder = new URIBuilder(url);
if (null != params && !params.isEmpty()) {
for (Map.Entry<String, String> entry : params.entrySet()) {
uriBuilder.addParameter(entry.getKey(), entry.getValue());
// 或者用
// 顺便说一下不同(setParameter会覆盖同名参数的值,addParameter则不会)
// uriBuilder.setParameter(entry.getKey(), entry.getValue());
}
}
URI uri = uriBuilder.build();
// 创建get请求
httpGet = new HttpGet(uri);
logger.info("访问路径:" + uri);
HttpResponse response = httpClient.execute(httpGet);
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {// 返回200,请求成功
// 结果返回
result = EntityUtils.toString(response.getEntity());
logger.info("请求成功!,返回数据:" + result);
} else {
logger.info("请求失败!");
}
} catch (Exception e) {
logger.info("请求失败!");
logger.error(ExceptionUtils.getStackTrace(e));
} finally {
// 释放连接
if (null != httpGet) {
httpGet.releaseConnection();
}
}
return result;
}
/**
* @Title: doPost
* @Description: post请求
* @param url
* @param params
* @return
* @author staystand
*/
public static String doPost(String url, Map<String, String> params) {
String result = "";
// 创建httpclient对象
HttpClient httpClient = HttpClientBuilder.create().build();
HttpPost httpPost = new HttpPost(url);
try { // 参数键值对
if (null != params && !params.isEmpty()) {
List<NameValuePair> pairs = new ArrayList<NameValuePair>();
NameValuePair pair = null;
for (String key : params.keySet()) {
pair = new BasicNameValuePair(key, params.get(key));
pairs.add(pair);
}
// 模拟表单
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(pairs);
httpPost.setEntity(entity);
}
HttpResponse response = httpClient.execute(httpPost);
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
result = EntityUtils.toString(response.getEntity(), "utf-8");
logger.info("返回数据:>>>" + result);
} else {
logger.info("请求失败!,url:" + url);
}
} catch (Exception e) {
logger.error("请求失败");
logger.error(ExceptionUtils.getStackTrace(e));
e.printStackTrace();
} finally {
if (null != httpPost) {
// 释放连接
httpPost.releaseConnection();
}
}
return result;
}
/**
* @Title: sendJsonStr
* @Description: post发送json字符串
* @param url
* @param params
* @return 返回数据
* @author staystand
*/
public static String sendJsonStr(String url, String params) {
String result = "";
HttpClient httpClient = HttpClientBuilder.create().build();
HttpPost httpPost = new HttpPost(url);
try {
httpPost.addHeader("Content-type", "application/json; charset=utf-8");
httpPost.setHeader("Accept", "application/json");
if (StringUtils.isNotBlank(params)) {
httpPost.setEntity(new StringEntity(params, Charset.forName("UTF-8")));
}
HttpResponse response = httpClient.execute(httpPost);
if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
result = EntityUtils.toString(response.getEntity());
logger.info("返回数据:" + result);
} else {
logger.info("请求失败");
}
} catch (IOException e) {
logger.error("请求异常");
logger.error(ExceptionUtils.getStackTrace(e));
}
return result;
}
}