Java uses Apache HTTP components to send post requests

In the previous article, the original httpurlconnection in the JDK was used to send a POST request to the specified URL

You can see that the number of encodings is somewhat large and the input and output streams are used

The arguments passed are also passed with a hard-name=xxx string such as "

Here's a look at the Apache HTTP component httpclient in the Apache Commons project

In this way, you can quickly send a request to a URL using a key-value pair of parameters

Package com.newflypig.demo;/** * Use HttpClient to send post requests to URLs using Apache HTTP components * Parameters using key-value pairs to pass */import java.util.ArrayList; Import Java.util.list;import Org.apache.http.httpresponse;import Org.apache.http.namevaluepair;import Org.apache.http.client.httpclient;import Org.apache.http.client.entity.urlencodedformentity;import Org.apache.http.client.methods.httppost;import Org.apache.http.impl.client.httpclients;import Org.apache.http.message.basicnamevaluepair;import Org.apache.http.util.entityutils;public class SendPostDemo2 { public static void Main (string[] args) throws Exception{httpclient Client=httpclients.createdefault (); HttpPost post=new httppost ("Http://localhost:8080/Test1/HelloWorld"); List<namevaluepair> parameters=new arraylist<namevaluepair> ();p Arameters.add (New BasicNameValuePair (" Name "," Ding Ding "));p ost.setentity (new urlencodedformentity (Parameters," UTF-8 ")); HttpResponse Response=client.execute (POST); System.out.println (Entityutils.tostring (Response.getentity ()));}}

Apache HTTP components can be downloaded from http://hc.apache.org/downloads.cgi, the latest version 4.5, with the 3.X version of the use of the method is significantly different.

Using this method regardless of the input and output are encapsulated very comfortable, we can draw on.

Java uses Apache HTTP components to send post requests