Java 发Post请求实例程序代码

//说明使用java的HttpConnection 模拟发送post请求

//该程序用来抓成绩公布网站上的指定范围准考证号的成绩情况

import javaioDataInputStream;

import javaioDataOutputStream;

import javaioInputStream;

import javaioOutputStream;

import HttpURLConnection;

import URL;

import javautilVector;

public class GetMain {

/**

* @param args

*/

private static String URL = ;

private static String url=;

public static void main(String[] args) {

//Post Data 为Form提交的内容

String postData=zkzh=+l+i+j+k+&tijiaox=&tijiaoy=;

String html=GetResponseDataByID(URLpostData);

String[] data=getNeedData(html);

}

}

public static void PrintStrs(String[] str)

{

for(String s:str)

{

Systemoutprint(s+);

}

Systemoutprintln();

}

//通过url和postdata获取返回值该函数为主要函数可以copy使用返回值为一个Html页面的数据

public static String GetResponseDataByID(String urlString postData)

{

String data=null;

try {

URL dataUrl = new URL(url);

HttpURLConnection con = (HttpURLConnection) dataUrlopenConnection();

consetRequestMethod(POST);

consetRequestProperty(ProxyConnection KeepAlive);

consetDoOutput(true);

consetDoInput(true);

OutputStream os=congetOutputStream();

DataOutputStream dos=new DataOutputStream(os);

doswrite(postDatagetBytes());

dosflush();

dosclose();

InputStream is=congetInputStream();

DataInputStream dis=new DataInputStream(is);

byte d[]=new byte[disavailable()];

disread(d);

data=new String(d);

//Systemoutprintln(data);

condisconnect();

} catch (Exception ex) {

exprintStackTrace();

}

return data;

}

/**Get Needed Data Form Responsed Html File**/

static String I=准考证号;

static String I=姓 名;

static String I=级别;

static String I=笔试成绩;

static String I=口试成绩;

public static String[] getNeedData(String html)

{

if(html==null)

return null;

String[] str=new String[];

str[]=getPart(htmlI);

str[]=getPart(htmlI);

str[]=getPart(htmlI);

str[]=getPart(htmlI);

str[]=getPart(htmlI);

return str;

}

public static String getPart(String sourceString type)

{

if(source==null)

return null;

if(sourceindexOf(准考证号输入错误)!=)

return null;

if(sourceindexOf(type)!=)

{

source=sourcesubstring(sourceindexOf(type)+typelength());

source=sourcesubstring(sourceindexOf(</TD></TR>));

source=sourcereplace(</TD> );

source=sourcereplace(<TD> );

source=sourcereplace(<TD align=center > );

source=sourcereplace(<TD align=center> );

source=sourcereplace(\n);

return sourcetrim();

}

else

return null;

}

}