java urlencode post Java urlencode post请求

一、通讯实现
package com.token;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
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.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class HttpClientUtil {
/**
* 日志对象
*/
private static final Logger LOGGER = LoggerFactory.getLogger(HttpClientUtil.class);
private HttpClientUtil(){
}
public static String doPost(String url, Mapparam) {
// 创建Httpclient对象
CloseableHttpClient httpClient = HttpClients.createDefault();
CloseableHttpResponse response = null;
String resultString = "";
try {
// 创建Http Post请求
HttpPost httpPost = new HttpPost(url);
// 创建参数列表
if (param != null) {
ListparamList = 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 (Exception e) {
e.printStackTrace();
} finally {
try {
response.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return resultString;
}
}
二、发起通讯
MapparamMap = new HashMap();
paramMap.put("name","zhangsan");
paramMap.put("age","12");
String result = HttpClientUtil.doPost("http://127.0.0.1/api?", paramMap);
返回的result为json串
三、其中用到的HttpClients,添加jar包引用
org.apache.httpcomponents
httpclient
4.4.1