JAVA HttpURLConnection Post方式提交传递参数

原文:http://wang09si.blog.163.com/blog/static/1701718042013631104658130/

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"));

转载于:https://www.cnblogs.com/zhi-hao/articles/4771188.html

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