HttpUtils
import org.apache.commons.lang3.StringUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* http请求封装类
*
* @author ldq
*/
public class HttpUtils {
/**
* 发送get请求
*
* @param url 地址
* @param params 参数map
* @param cookies cookie map
* @return json格式结果
*/
public static String get(String url, Map<String, Object> params, Map<String, String> cookies) throws IOException {
CloseableHttpClient client = HttpClients.createDefault();
// 封装参数
if (params != null && params.size() > 0) {
List<BasicNameValuePair> list = new ArrayList<>();
for (Map.Entry<String, Object> entry : params.entrySet()) {
list.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
}
String param = EntityUtils.toString(new UrlEncodedFormEntity(list, Consts.UTF_8));
url = url + "?" + param;
}
HttpGet httpGet = new HttpGet(url);
// 设置cookie
setCookie(httpGet, cookies);
CloseableHttpResponse httpResponse = null;
try {
httpResponse = client.execute(httpGet);
HttpEntity entity = httpResponse.getEntity();
return EntityUtils.toString(entity);
} finally {
closeResource(client, httpResponse);
}
}
/**
* 发送post请求
*
* @param url 地址
* @param params 参数map
* @param cookies cookie map
* @return json格式结果
*/
public static String post(String url, Map<String, Object> params, Map<String, String> cookies) throws IOException {
CloseableHttpClient client = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
// 封装参数
if (params != null && params.size() > 0) {
List<BasicNameValuePair> list = new ArrayList<>();
for (Map.Entry<String, Object> entry : params.entrySet()) {
list.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
}
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(list);
httpPost.setEntity(formEntity);
}
// 设置cookie
setCookie(httpPost, cookies);
CloseableHttpResponse response = null;
try {
response = client.execute(httpPost);
HttpEntity entity = response.getEntity();
return EntityUtils.toString(entity);
} finally {
closeResource(client, response);
}
}
/**
* 发送post json请求
*
* @param url 地址
* @param params 参数json
* @param cookies cookie map
* @return json格式结果
*/
public static String post(String url, String params, Map<String, String> cookies) throws IOException {
CloseableHttpClient client = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
httpPost.addHeader("Content-Type", "application/json");
// 封装参数
if (StringUtils.isNotBlank(params)) {
// 防止中文乱码
httpPost.setEntity(new StringEntity(params, "UTF-8"));
}
// 设置cookie
setCookie(httpPost, cookies);
CloseableHttpResponse response = null;
try {
response = client.execute(httpPost);
HttpEntity entity = response.getEntity();
return EntityUtils.toString(entity);
} finally {
closeResource(client, response);
}
}
/**
* 发送post json请求
*
* @param url 地址
* @param params 参数json
* @param header header
* @return json格式结果
*/
public static String postRequest(String url, String params, Map<String, String> header) throws IOException {
CloseableHttpClient client = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
httpPost.addHeader("Content-Type", "application/json");
if (header != null) {
for (Map.Entry<String, String> entry : header.entrySet()) {
httpPost.addHeader(entry.getKey(), entry.getValue());
}
}
// 封装参数
if (StringUtils.isNotBlank(params)) {
// 防止中文乱码
httpPost.setEntity(new StringEntity(params, "UTF-8"));
}
CloseableHttpResponse response = null;
try {
response = client.execute(httpPost);
HttpEntity entity = response.getEntity();
return EntityUtils.toString(entity);
} finally {
closeResource(client, response);
}
}
/**
* 设置cookie
*/
private static void setCookie(HttpRequestBase httpRequestBase, Map<String, String> cookies) {
// 设置cookie
if (cookies != null && cookies.size() > 0) {
StringBuilder cookie = new StringBuilder();
for (Map.Entry<String, String> entry : cookies.entrySet()) {
cookie.append(entry.getKey()).append("=").append(entry.getValue()).append(";");
}
httpRequestBase.addHeader("Cookie", cookie.toString());
}
}
/**
* 关闭流
*/
private static void closeResource(CloseableHttpClient client, CloseableHttpResponse response) throws IOException {
if (response != null) {
response.close();
}
if (client != null) {
client.close();
}
}
}