HttpComponent 实现POST提交

package com.mmt.httpClient_GET;

import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
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;

public class HttpClientPost {

    
    public static void main(String []args){
        String urlPath = "http://localhost/test/userLogin.php";
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("userName", "mmt"));
        params.add(new BasicNameValuePair("userPswd", "123456"));
        String encodeType = "utf-8";
        
        String resultString = doPost(urlPath,params,encodeType);
        System.out.println(resultString);
    }
    
    private static String doPost(String urlPath,List<NameValuePair> params,String encodeType){
        String resultString = null ;
        
        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(urlPath);
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(params));
            CloseableHttpResponse httpResponse = httpClient.execute(httpPost);
            HttpEntity httpEntity = httpResponse.getEntity();
            resultString = EntityUtils.toString(httpEntity);
        } catch (Exception e) {
            e.printStackTrace();
        } 
        
        return resultString ;
        
    }
}