使用 HttpClient 进行 Post 方式通信

1.TestPost.java

package testhttpclient;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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 TestPost {
public static void main(String[] args) {
//http://fanyi.youdao.com/openapi.do
//keyfrom=JKXY-test&key=343166845&type=data&doctype=xml&version=1.1&q=welcome
new Post().start();
}
}
class Post extends Thread{
//创建标准的httpClient
HttpClient client=HttpClients.createDefault();
@Override
public void run() {
HttpPost post=new HttpPost("http://fanyi.youdao.com/openapi.do");

try {
//keyfrom=JKXY-test&keyfrom=JKXY-test&key=343166845&type=data&doctype=xml&version=1.1&q=welcome
//BasicNameValuePair是存储键值对的类,当输入新的key和value值，一点添加，它会自动给装换成http的格式，=和&符号，我们都不用自己进行拼接和匹配了.
List<BasicNameValuePair> parameters=new ArrayList<>();
parameters.add(new BasicNameValuePair("keyfrom", "JKXY-test"));
parameters.add(new BasicNameValuePair("key", "343166845"));
parameters.add(new BasicNameValuePair("type", "data"));
parameters.add(new BasicNameValuePair("doctype", "xml"));
parameters.add(new BasicNameValuePair("version", "1.1"));
parameters.add(new BasicNameValuePair("q", "welcome"));

//传输给post请求
post.setEntity(new UrlEncodedFormEntity(parameters,"UTF-8"));
//执行
HttpResponse response=client.execute(post);
//http实例化对象
HttpEntity entity=response.getEntity();
String result=EntityUtils.toString(entity, "UTF-8");

System.out.println(result);

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

}
2.运行截图

console控制台内容:

<?xml version="1.0" encoding="UTF-8"?>
<youdao-fanyi>
<errorCode>0</errorCode>
<query><![CDATA[welcome]]></query>
<!-- 有道翻译 -->
<translation>
<paragraph><![CDATA[欢迎]]></paragraph>
</translation>
<!-- 有道词典-基本词典 -->
<basic>
<!-- 音标 -->
<phonetic><![CDATA[ˈwelkəm]]></phonetic>
<!-- 美式音标 -->
<us-phonetic><![CDATA[ˈwelkəm]]></us-phonetic>
<!-- 英式音标 -->
<uk-phonetic><![CDATA[ˈwelkəm]]></uk-phonetic>
<!-- 基本释义 -->
<explains>
<ex><![CDATA[adj. 受欢迎的；令人愉快的；可随意的；尽管……好了]]></ex>
<ex><![CDATA[n. 欢迎；迎接；接受]]></ex>
<ex><![CDATA[v. 欢迎，迎接；迎新；乐于接受]]></ex>
<ex><![CDATA[int. 欢迎]]></ex>
<ex><![CDATA[n. (Welcome) （美、印）韦尔科姆（人名）]]></ex>
</explains>
</basic>
<!-- 有道词典-网络释义 -->
<web>
<explain>
<key><![CDATA[Welcome]]></key>
<value>
<ex><![CDATA[欢迎]]></ex>
<ex><![CDATA[受欢迎的]]></ex>
<ex><![CDATA[欢迎光临]]></ex>
</value>
</explain>
<explain>
<key><![CDATA[welcome to]]></key>
<value>
<ex><![CDATA[欢迎到来]]></ex>
<ex><![CDATA[欢迎参加]]></ex>
<ex><![CDATA[欢迎到]]></ex>
</value>
</explain>
<explain>
<key><![CDATA[Welcome aboard]]></key>
<value>
<ex><![CDATA[欢迎登机]]></ex>
<ex><![CDATA[欢迎加入]]></ex>
<ex><![CDATA[请上船]]></ex>
</value>
</explain>
</web>
</youdao-fanyi>