4-Http通信

1.使用Http的get方式通信

package com.example;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class MyClass {
    public static void main(String []args){
        new tetsGet("http://fanyi.youdao.com/openapi.do?keyfrom=TESTINTERNETssss&key=1185096979&type=data&doctype=json&version=1.1&q=hello").start();
    }
}
class tetsGet extends Thread{
    private String string = new String();
    public tetsGet(String  url) {
        this.string = url;
    }
    @Override
    public void run() {
        try {
            URL url = new URL(this.string);
            URLConnection urlConnection = url.openConnection();

            InputStream is = urlConnection.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);

            StringBuilder str = new StringBuilder();
            String line = new String();
            while ((line = br.readLine())!=null){
                str.append(line);
            }

            br.close();
            isr.close();
            is.close();
            System.out.println(str);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2.使用Http的post方式通信

package com.example;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class MyClass {
    public static void main(String []args){
        new testPost().start();
    }
}

class testPost extends Thread{
    @Override
    public void run() {
        try {
            URL url = new URL("http://fanyi.youdao.com/openapi.do");
            HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
            urlConnection.addRequestProperty("encoding","UTF-8");
            urlConnection.setDoOutput(true);
            urlConnection.setDoInput(true);
            urlConnection.setRequestMethod("POST");

            OutputStream os = urlConnection.getOutputStream();
            OutputStreamWriter osw = new OutputStreamWriter(os);
            BufferedWriter bw = new BufferedWriter(osw);
            bw.write("keyfrom=TESTINTERNETssss&key=1185096979&type=data&doctype=json&version=1.1&q=hello");
            bw.flush();
            InputStream is = urlConnection.getInputStream();
            InputStreamReader  isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            StringBuilder sb = new StringBuilder();
            String str = new String();
            while ((str = br.readLine())!= null){
                sb.append(str);
            }
            System.out.println(sb);

            br.close();
            isr.close();
            is.close();
            bw.close();
            osw.close();
            os.close();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

3.使用HttpClient的get方式通信

package com.example;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class MyClass {
    public static void main(String []args){
        new testget().start();
    }
}
class testget extends Thread{
    HttpClient client = HttpClients.createDefault();
    @Override
    public void run() {
        HttpGet get = new HttpGet("http://www.baidu.com");
        try {
            HttpResponse response =  client.execute(get);

            HttpEntity entity = response.getEntity();
            String result = EntityUtils.toString(entity,"UTF-8");;
            System.out.println(result);

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

4.使用HttpcClient的post方式通信

package com.example;

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.HttpGet;
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;
import org.w3c.dom.Entity;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class MyClass {
    public static void main(String []args){
        new testpost().start();
    }
}
//keyfrom=TESTINTERNETssss&key=1185096979&type=data&doctype=json&version=1.1&q=hello
class testpost extends Thread{
    HttpClient client = HttpClients.createDefault();
    @Override
    public void run() {
        HttpPost post = new HttpPost("http://fanyi.youdao.com/openapi.do");
        try {


            List<BasicNameValuePair> para = new ArrayList<>();
            para.add(new BasicNameValuePair("keyfrom","TESTINTERNETssss"));
            para.add(new BasicNameValuePair("key","1185096979"));
            para.add(new BasicNameValuePair("type","data"));
            para.add(new BasicNameValuePair("doctype","json"));
            para.add(new BasicNameValuePair("version","1.1"));
            para.add(new BasicNameValuePair("q","hello"));
            post.setEntity(new UrlEncodedFormEntity(para,"UTF-8"));

            HttpResponse response = client.execute(post);
            HttpEntity entity = response.getEntity();
            String str = EntityUtils.toString(entity,"UTF-8");
            System.out.println(str);

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


    }
}