http请求实质举例
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一.不带参数的url GET请求.
1.通过浏览器请求
2.通过java 的socket请求,写入字符串与返回字符串
3.通过java 的httpconnection访问url.
辅助工具:tcp/ipmonitor 在1,3 两种请求的时候,分别访问的是8888端口,而不是8080端口.为的是能够记录下请求与放回的数据.
#######################################################################
firefox 请求
http://ld0shqvuyxdpqyd:8888/struts2json/
tcp/ip monitor
request:
-------------------------------
GET /struts2json/ HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-cn,zh;q=0.5
Accept-Encoding: gzip, deflate
Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7
Connection: keep-alive
Cookie: JSESSIONID=211BD82F577C5E0C0CAB2477537F3B60
response:
-------------------------------
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 628
Date: Tue, 25 Oct 2011 07:39:05 GMT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</html>
#######################################################################
java socket 模拟head请求,代码如下.
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
Socket ss = new Socket("ld0shqvuyxdpqyd",8080);
StringBuffer s = new StringBuffer();
s.append("GET /struts2json/ HTTP/1.1\r\n");
s.append("Host: ld0shqvuyxdpqyd:8080\r\n");
s.append("User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1\r\n");
s.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
s.append("Accept-Language: zh-cn,zh;q=0.5\r\n");
s.append("Accept-Encoding: gzip, deflate\r\n");
s.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");
s.append("Connection: keep-alive\r\n");
s.append("Cookie: JSESSIONID=211BD82F577C5E0C0CAB2477537F3B60\r\n");
s.append("Cache-Control: max-age=0\r\n");
s.append("\r\n");
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(ss.getOutputStream()));
BufferedReader br = new BufferedReader(new InputStreamReader(ss.getInputStream()));
bw.write(s.toString());
bw.flush();
String mm = "";
while((mm = br.readLine())!= null){
System.out.println(mm);
}
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
System.out.println("io 没有关闭");
}
}
-----------------------------------
打印结果如下:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 634
Date: Tue, 25 Oct 2011 07:57:32 GMT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</html>
io 没有关闭
#######################################################################
使用java中的httpconnection来实现.
public static void main(String[] args) {
String urlStr = "http://ld0shqvuyxdpqyd:8888/struts2json/";
URL url = null;
HttpURLConnection connection = null;
try{
url = new URL(urlStr);
connection = (HttpURLConnection) url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(connection
.getInputStream()));
System.out.println(connection.getHeaderFields());
String inputLine;
while ((inputLine = in.readLine()) != null)
System.out.println(inputLine);
in.close();
}catch(Exception e){
e.printStackTrace();
}finally{
connection.disconnect();
}
}
monitor监控request:
----------------------------------------------------
GET /struts2json/ HTTP/1.1
User-Agent: Java/1.5.0_19
Host: localhost:8080
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
monitor监控response:
----------------------------------------------------
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=C12DC5D9C63A96B00EB3E4150F120A19; Path=/struts2json
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 628
Date: Tue, 25 Oct 2011 08:26:36 GMT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</html>
---------------------------
java 打印结果
{Content-Length=[628], Set-Cookie=[JSESSIONID=C12DC5D9C63A96B00EB3E4150F120A19; Path=/struts2json], Date=[Tue, 25 Oct 2011 08:26:36 GMT], Server=[Apache-Coyote/1.1], Content-Type=[text/html;charset=ISO-8859-1], null=[HTTP/1.1 200 OK]}
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</body>
</html>
#######################################################################
总结:
1.实质就是socket的链接
2.请求一定有header头,返回有header头,以及返回content内容.
3.请求端没有sessionid时,服务端为其创建.
4.User-Agent类型出了浏览器外,还可以别的方式请求.不过code都是可以模拟用什么浏览器请求.
二.post请求,并且带参数.[不再写所有的实现.仅仅写一下最底层的soket的实现]
-----------------------------------------------------------------------
try {
Socket ss = new Socket("server",80);
StringBuffer s = new StringBuffer();
s.append("POST /test/login!confirm.action HTTP/1.1\r\n");
s.append("Host: server\r\n");
s.append("User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1\r\n");
s.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
s.append("Accept-Language: zh-cn,zh;q=0.5\r\n");
s.append("Accept-Encoding: gzip, deflate\r\n");
s.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");
s.append("Connection: keep-alive\r\n");
s.append("Referer: http://server/test/login.action\r\n");
s.append("Cookie: JSESSIONID=0000rnMf0ovC30zoOtclZcg7Tld:-1\r\n");
s.append("Content-Type: application/x-www-form-urlencoded\r\n");
s.append("Content-Length: 189\r\n");
s.append("\r\n");
s.append("loginView.ebNoHead=70&loginView.channelType=I&loginView.branchID=812&loginView.loginType=A&loginView.loginIDType=U&gopage=&loginView.loginID=testloginout&loginView.password=111111&x=35&y=11\r\n");
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(ss.getOutputStream()));
BufferedReader br = new BufferedReader(new InputStreamReader(ss.getInputStream()));
bw.write(s.toString());
bw.flush();
String mm = "";
while((mm = br.readLine())!= null){
System.out.println(mm);
}
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
System.out.println("io 没有关闭");
}
看到仍然是需要,header头,只不过在header结束的地方,加入了请求的参数及值.
1.通过浏览器请求
2.通过java 的socket请求,写入字符串与返回字符串
3.通过java 的httpconnection访问url.
辅助工具:tcp/ipmonitor 在1,3 两种请求的时候,分别访问的是8888端口,而不是8080端口.为的是能够记录下请求与放回的数据.
#######################################################################
firefox 请求
http://ld0shqvuyxdpqyd:8888/struts2json/
tcp/ip monitor
request:
-------------------------------
GET /struts2json/ HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-cn,zh;q=0.5
Accept-Encoding: gzip, deflate
Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7
Connection: keep-alive
Cookie: JSESSIONID=211BD82F577C5E0C0CAB2477537F3B60
response:
-------------------------------
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 628
Date: Tue, 25 Oct 2011 07:39:05 GMT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</html>
#######################################################################
java socket 模拟head请求,代码如下.
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
Socket ss = new Socket("ld0shqvuyxdpqyd",8080);
StringBuffer s = new StringBuffer();
s.append("GET /struts2json/ HTTP/1.1\r\n");
s.append("Host: ld0shqvuyxdpqyd:8080\r\n");
s.append("User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1\r\n");
s.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
s.append("Accept-Language: zh-cn,zh;q=0.5\r\n");
s.append("Accept-Encoding: gzip, deflate\r\n");
s.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");
s.append("Connection: keep-alive\r\n");
s.append("Cookie: JSESSIONID=211BD82F577C5E0C0CAB2477537F3B60\r\n");
s.append("Cache-Control: max-age=0\r\n");
s.append("\r\n");
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(ss.getOutputStream()));
BufferedReader br = new BufferedReader(new InputStreamReader(ss.getInputStream()));
bw.write(s.toString());
bw.flush();
String mm = "";
while((mm = br.readLine())!= null){
System.out.println(mm);
}
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
System.out.println("io 没有关闭");
}
}
-----------------------------------
打印结果如下:
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 634
Date: Tue, 25 Oct 2011 07:57:32 GMT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</html>
io 没有关闭
#######################################################################
使用java中的httpconnection来实现.
public static void main(String[] args) {
String urlStr = "http://ld0shqvuyxdpqyd:8888/struts2json/";
URL url = null;
HttpURLConnection connection = null;
try{
url = new URL(urlStr);
connection = (HttpURLConnection) url.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(connection
.getInputStream()));
System.out.println(connection.getHeaderFields());
String inputLine;
while ((inputLine = in.readLine()) != null)
System.out.println(inputLine);
in.close();
}catch(Exception e){
e.printStackTrace();
}finally{
connection.disconnect();
}
}
monitor监控request:
----------------------------------------------------
GET /struts2json/ HTTP/1.1
User-Agent: Java/1.5.0_19
Host: localhost:8080
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
monitor监控response:
----------------------------------------------------
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Set-Cookie: JSESSIONID=C12DC5D9C63A96B00EB3E4150F120A19; Path=/struts2json
Content-Type: text/html;charset=ISO-8859-1
Content-Length: 628
Date: Tue, 25 Oct 2011 08:26:36 GMT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</html>
---------------------------
java 打印结果
{Content-Length=[628], Set-Cookie=[JSESSIONID=C12DC5D9C63A96B00EB3E4150F120A19; Path=/struts2json], Date=[Tue, 25 Oct 2011 08:26:36 GMT], Server=[Apache-Coyote/1.1], Content-Type=[text/html;charset=ISO-8859-1], null=[HTTP/1.1 200 OK]}
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
略去正常简单的页面内容.
</body>
</html>
#######################################################################
总结:
1.实质就是socket的链接
2.请求一定有header头,返回有header头,以及返回content内容.
3.请求端没有sessionid时,服务端为其创建.
4.User-Agent类型出了浏览器外,还可以别的方式请求.不过code都是可以模拟用什么浏览器请求.
二.post请求,并且带参数.[不再写所有的实现.仅仅写一下最底层的soket的实现]
-----------------------------------------------------------------------
try {
Socket ss = new Socket("server",80);
StringBuffer s = new StringBuffer();
s.append("POST /test/login!confirm.action HTTP/1.1\r\n");
s.append("Host: server\r\n");
s.append("User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1\r\n");
s.append("Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n");
s.append("Accept-Language: zh-cn,zh;q=0.5\r\n");
s.append("Accept-Encoding: gzip, deflate\r\n");
s.append("Accept-Charset: GB2312,utf-8;q=0.7,*;q=0.7\r\n");
s.append("Connection: keep-alive\r\n");
s.append("Referer: http://server/test/login.action\r\n");
s.append("Cookie: JSESSIONID=0000rnMf0ovC30zoOtclZcg7Tld:-1\r\n");
s.append("Content-Type: application/x-www-form-urlencoded\r\n");
s.append("Content-Length: 189\r\n");
s.append("\r\n");
s.append("loginView.ebNoHead=70&loginView.channelType=I&loginView.branchID=812&loginView.loginType=A&loginView.loginIDType=U&gopage=&loginView.loginID=testloginout&loginView.password=111111&x=35&y=11\r\n");
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(ss.getOutputStream()));
BufferedReader br = new BufferedReader(new InputStreamReader(ss.getInputStream()));
bw.write(s.toString());
bw.flush();
String mm = "";
while((mm = br.readLine())!= null){
System.out.println(mm);
}
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
System.out.println("io 没有关闭");
}
看到仍然是需要,header头,只不过在header结束的地方,加入了请求的参数及值.
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