接口 两种调用http接口的方法

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

/*
第一种：httpClient 方式
所需jar包： commons-httpclient-3.0.1.jar  及其他依赖jar包
*/
public static void sendPostRequest1(Map<String,String> paramMap,String REQUEST_URL)
{
try {
HttpClient httpclient = new HttpClient();
httpclient.getParams().setHttpElementCharset("utf-8");
httpclient.getParams().setContentCharset("utf-8");
httpclient.getParams().setSoTimeout(10000);

PostMethod post=new PostMethod(REQUEST_URL);
//参数数组
NameValuePair[] params=new NameValuePair[paramMap.size()];

int index=0;
for(String key : paramMap.keySet())
{
String value=paramMap.get(key);
NameValuePair n=new NameValuePair(key,value);
params[index]=n;
index++;
}
/*
另一种添加参数的方法：
post.addParameter(key, value);
*/
//设置请求参数
post.setRequestBody(params);
//开始请求
httpclient.executeMethod(post);

// 判断请求响应状态码，状态码为200表示服务端成功响应了客户端的请求
if(post.getStatusCode()==200)
{
//获取返回消息字符串
String str=post.getResponseBodyAsString();
System.out.println(str);
}

} catch (Exception e) {
e.printStackTrace();
}
}

/*
第二种：HttpPost 方式
所需jar包： httpclient-4.3.5.jar、httpcore-4.3.2.jar  及其他依赖jar包
*/
public static void sendPostRequest2(Map<String,String> paramMap,String REQUEST_URL)
{
try {

CloseableHttpClient httpclient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(REQUEST_URL);
//设置请求和传输超时时间
RequestConfig config=RequestConfig.custom().setSocketTimeout(5000).setConnectTimeout(5000).build();
httpPost.setConfig(config);
List<org.apache.http.NameValuePair> list=new ArrayList<org.apache.http.NameValuePair>();
for(String key : paramMap.keySet())
{
String value=paramMap.get(key);
BasicNameValuePair  n=new BasicNameValuePair(key,value);
list.add(n);

}
//设置参数
HttpEntity httpEntity=new UrlEncodedFormEntity(list,HTTP.UTF_8);
httpPost.setEntity(httpEntity);
//开始请求
HttpResponse response=httpclient.execute(httpPost);

// 判断请求响应状态码，状态码为200表示服务端成功响应了客户端的请求
if(response.getStatusLine().getStatusCode()==200)
{
//获取返回消息字符串
String result=EntityUtils.toString(response.getEntity());

System.out.println(result);
}
} catch (Exception e) {
e.printStackTrace();
}
}