JAVA HttpURLConnection Post方式提交传递参数
转自: http://wang09si.blog.163.com/blog/static/1701718042013631104658130/
JAVA HttpURLConnection Post方式提交传递参数  
package wzq.j2se;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import 
java.io.IOException;
import java.io.InputStreamReader;
import 
java.net.HttpURLConnection;
import java.net.URL;
import 
java.net.URLEncoder;
public class HttpURLConnectionPost {
 /**
  * @param args
  * @throws IOException 
  */
 public static 
void main(String[] args) throws IOException 
{
  readContentFromPost();
 }
 public static void readContentFromPost() 
throws IOException {
        // Post请求的url,与get不同的是不需要带参数
        URL 
postUrl = new URL("http://www.wangzhiqiang87.cn");
        
// 打开连接
        HttpURLConnection connection = (HttpURLConnection) 
postUrl.openConnection();
      
        // 
设置是否向connection输出,因为这个是post请求,参数要放在
        // http正文内,因此需要设为true
        
connection.setDoOutput(true);
        // Read from the connection. Default is 
true.
        connection.setDoInput(true);
        // 默认是 GET方式
        
connection.setRequestMethod("POST");
       
        // Post 
请求不能使用缓存
        connection.setUseCaches(false);
       
        
connection.setInstanceFollowRedirects(true);
       
        // 
配置本次连接的Content-type,配置为application/x-www-form-urlencoded的
        // 
意思是正文是urlencoded编码过的form参数,下面我们可以看到我们对正文内容使用URLEncoder.encode
        // 
进行编码
        
connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
        
// 连接,从postUrl.openConnection()至此的配置必须要在connect之前完成,
        // 
要注意的是connection.getOutputStream会隐含的进行connect。
        
connection.connect();
        DataOutputStream out = new 
DataOutputStream(connection
                .getOutputStream());
        
// The URL-encoded contend
        // 正文,正文内容其实跟get的URL中 '? 
'后的参数字符串一致
        String content = "account=" + URLEncoder.encode("一个大肥人", 
"UTF-8");
        content +="&pswd="+URLEncoder.encode("两个个大肥人", 
"UTF-8");;
        // 
DataOutputStream.writeBytes将字符串中的16位的unicode字符以8位的字符形式写到流里面
        
out.writeBytes(content);
        out.flush();
        out.close(); 
        
        
BufferedReader reader = new BufferedReader(new 
InputStreamReader(connection.getInputStream()));
        String 
line;
        
        while ((line = reader.readLine()) != 
null){
            System.out.println(line);
        }
      
        reader.close();
        connection.disconnect();
}
}
在接收端,这样获取参数:
String name = 
request.getParameter("account");
String pswd = 
request.getParameter("pswd");
 
 System.out.println(new 
String(name.getBytes("iso-8859-1"),"UTF-8")); 
 System.out.println(new 
String(pswd.getBytes("iso-8859-1"),"UTF-8")); 
                    
                
                
            
        
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