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"));