package com.common.utils;


import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;


import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
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.utils.URIBuilder;
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;


public class HttpClientUtil {


public static String doGet(String url,Map<String, String> param) {

//创建HttpClient对象
CloseableHttpClient httpClient = HttpClients.createDefault();

String resultString = "";
CloseableHttpResponse response = null;
try {
//创建uri
URIBuilder builder = new URIBuilder(url);
if(param != null) {
for (String key : param.keySet()) {
builder.addParameter(key, param.get(key));
}
}
URI uri = builder.build();

//创建Http Get请求
HttpGet httpGet = new HttpGet(uri);

//执行请求
response = httpClient.execute(httpGet);

//判断返回状态是否为200
if(response.getStatusLine().getStatusCode() == 200) {
resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
}

} catch (URISyntaxException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally {
try {
if(response != null) {
response.close();
}
httpClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return resultString;
}

public static String doGet(String url) {
return doGet(url,null);
}


public static String doPost(String url,Map<String, String> param) {

//创建HttpClient对象
CloseableHttpClient httpClient = HttpClients.createDefault();

String resultString = "";
CloseableHttpResponse response = null;

try {
//创建Http Post请求
HttpPost httpPost = new HttpPost(url);

//创建参数列表
if(param != null) {
List<NameValuePair> paramList = new ArrayList<>();
for (String key : param.keySet()) {
paramList.add(new BasicNameValuePair(key, param.get(key)));
}

//模拟表单
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList, "UTF-8");
httpPost.setEntity(entity);
}

//执行http请求
response = httpClient.execute(httpPost);
resultString = EntityUtils.toString(response.getEntity(), "UTF-8");

} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally {
try {
if(response != null) {
response.close();
}
httpClient.close();
} catch (IOException e) {
e.printStackTrace();
}
}

return resultString;
}

public static String doPost(String url) {
return doPost(url, null);
}
}