从表面来看GET和POST请求:

    GET请求是在url后直接附上请求体,url和请求体之间用"?"分割,不同参数之间用"&"分隔,％XX中的XX为该符号以16进制表示的ASCII，如果数据是英文字母/数字，原样发送，如果是空格，转换为+，如果是中文/其他字符，则直接把字符串用BASE64加密。

    POST把提交的数据则放置在是HTTP包的包体中,Post没有限制提交的数据。Post比Get安全，当数据是中文或者不敏感的数据，则用get，因为使用get，参数会显示在地址，对于敏感数据和不是中文字符的数据，则用post

Java中get请求:

package com.httpGetTest;import java.io.BufferedReader;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 HttpGetTest {	public static void main(String[] args) {		CreatHttpUrl creatUrl = new CreatHttpUrl();	    String url = CreatHttpUrl.creatUrl("teacher", "en", "zh-CHS");	    //System.out .print(url);	    	   // new readByGet().start();	    readData();	}	public static void readData()	{		try { 	    	CreatHttpUrl creatUrl = new CreatHttpUrl();		    String urlStr = CreatHttpUrl.creatUrl("teacher", "en", "zh-CHS");			URL url = new URL(urlStr);			URLConnection connection = url.openConnection();			InputStream is = connection.getInputStream();			InputStreamReader isr = new InputStreamReader(is);			BufferedReader bf = new BufferedReader(isr);						String line;			StringBuilder builder = new StringBuilder();			while((line = bf.readLine()) != null)			{				builder.append(line);			}						bf.close();			isr.close();			is.close();						System.out.println(builder);				    } catch (Exception e) {			e.printStackTrace();		}	}}

 

Java中的post请求:

package com.httpPostTest;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 HttpPostTest {	public static void main(String[] args) {		CreatHttpUrl creatUrl = new CreatHttpUrl();		String urlStr = "https://openapi.youdao.com/api";		String paramStr = creatUrl.createParam("good","en","zh-CHS");				System.out.println(paramStr);				try {			//设置请求相关设置			URL url = new URL(urlStr);			HttpURLConnection connection = (HttpURLConnection) url.openConnection();			connection.setRequestProperty("encoding", "UTF-8");			connection.setRequestMethod("POST");			connection.setDoInput(true);			connection.setDoOutput(true);						//post提交数据			OutputStream os = connection.getOutputStream();			OutputStreamWriter osw = new OutputStreamWriter(os);			BufferedWriter writer = new BufferedWriter(osw);						writer.write(paramStr);			writer.flush();						//读取获取的数据			InputStream is = connection.getInputStream();			InputStreamReader isr = new InputStreamReader(is);			BufferedReader br = new BufferedReader(isr);						String line;			StringBuilder builder = new StringBuilder();			while((line = br.readLine()) != null)			{				builder.append(line);			}						writer.close();			osw.close();			os.close();			br.close();			isr.close();			is.close();									System.out.print(builder.toString());					} catch (Exception e) {			e.printStackTrace();		}	}}