java调用http/https GET方法
java调用api比较麻烦，get方法的调用封装好了，下面我们来获取一下百度的
代码如下：
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class TestGet {
public static void main(String[] args) {
System.out.println(get("/"));
}
public static String get(String url) {
try {
URL thisurl = new URL(url); // 把字符串转换为URL请求地址
HttpURLConnection connection = (HttpURLConnection) thisurl
.openConnection();// 打开连接
connection.connect();// 连接会话
// 获取输入流
BufferedReader br = new BufferedReader(new InputStreamReader(
connection.getInputStream(), "UTF-8"));
String line;
StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {// 循环读取流
sb.append(line);
}
br.close();// 关闭流
connection.disconnect();// 断开连接
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
结果
<!DOCTYPE html><!--STATUS OK--><html> <head><meta http-equiv=content-type content=text/html;charset=utf-8><meta http-equiv=X-UA-Compatible content=IE=Edge><meta content=always name=referrer><link rel=stylesheet type=text/css href=https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/bdorz/baidu.min.css><title>百度一下，你就知道</title></head> <body link=#0000cc> <div id=wrapper> <div id=head> <div class=head_wrapper> <div class=s_form> <div class=s_form_wrapper> <div id=lg> <img hidefocus=true src=///img/bd_logo1.png width=270 height=129> </div> <form id=form name=f action=///s class=fm> <input type=hidden name=bdorz_come value=1> <input type=hidden name=ie value=utf-8> <input type=hidden name=f value=8> <input type=hidden name=rsv_bp value=1> <input type=hidden name=rsv_idx value=1> <input type=hidden name=tn value=baidu><span class="bg s_ipt_wr"><input id=kw name=wd class=s_ipt value maxlength=255 autocomplete=off autofocus=autofocus></span><span class="bg s_btn_wr"><input type=submit id=su value=百度一下 class="bg s_btn" autofocus></span> </form> </div> </div> <div id=u1> <a href= name=tj_trnews class=mnav>新闻</a> <a href=https:// name=tj_trhao123 class=mnav>hao123</a> <a href= name=tj_trmap class=mnav>地图</a> <a href= name=tj_trvideo class=mnav>视频</a> <a href= name=tj_trtieba class=mnav>贴吧</a> <noscript> <a href=/bdorz/?login&tpl=mn&u=http%3A%2F%%2f%3fbdorz_come%3d1 name=tj_login class=lb>登录</a> </noscript> <script>('<a href="/bdorz/?login&tpl=mn&u='+ encodeURIComponent(+ ( === "" ? "?" : "&")+ "bdorz_come=1")+ '" name="tj_login" class="lb">登录</a>'); </script> <a href=///more/ name=tj_briicon class=bri style="display: block;">更多产品</a> </div> </div> </div> <div id=ftCon> <div id=ftConw> <p id=lh> <a href=>关于百度</a> <a href=>About Baidu</a> </p> <p id=cp>©2017 Baidu <a href=/duty/>使用百度前必读</a> <a href=/ class=cp-feedback>意见反馈</a> 京ICP证030173号 <img src=///img/> </p> </div> </div> </div> </body> </html>