用java代码发送http请求 

 1 //发送post请求
 2             PrintWriter out = null;
 3             BufferedReader in = null;
 4             String result = "";
 5             try {
 6                 URL realUrl = new URL("http:...........................");
 7                 // 打开和URL之间的连接
 8                 URLConnection conn = realUrl.openConnection();
 9                 // 设置通用的请求属性
10                 conn.setRequestProperty("accept", "*/*");
11                 conn.setRequestProperty("connection", "Keep-Alive");
12                 conn.setRequestProperty("user-agent",
13                         "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
14                 // 发送POST请求必须设置如下两行
15                 conn.setDoOutput(true);
16                 conn.setDoInput(true);
17                 // 获取URLConnection对象对应的输出流
18                 out = new PrintWriter(conn.getOutputStream());
19                 // 发送请求参数
20                //参数格式如下
21                 out.print("uid="+uid+"&status="+status+"&gender="+gender+"&channel="+u.getChannel());
22                 // flush输出流的缓冲
23                 out.flush();
24                 // 定义BufferedReader输入流来读取URL的响应
25                 in = new BufferedReader(
26                         new InputStreamReader(conn.getInputStream(),"UTF-8"));
27                 String line = "";
28                 while ((line = in.readLine()) != null) {
29                     result += line;
30                 }
31 
32             } catch (Exception e) {
33                 System.out.println("发送 POST 请求出现异常！"+e);
34                 e.printStackTrace();
35             }
36             //使用finally块来关闭输出流、输入流
37             finally{
38                 try{
39                     if(out!=null){
40                         out.close();
41                     }
42                     if(in!=null){
43                         in.close();
44                     }
45                 }
46                 catch(IOException ex){
47                     ex.printStackTrace();
48                 }
49             }
50             System.out.println(result);

 

posted @ 2018-02-02 11:12  夜旦  阅读(2422)  评论(0)  编辑  收藏  举报