【网络】从日常开发说起，浅谈HTTP协议是做什么的

/**

*工具类

*

*@author小B

*<ahref="http://www.jobbole.com/members/chchxinxinjun">@since</a>4/17/2015
2:47PM

*/

publicabstractclassStringUtils{

publicstaticbooleanisNull(Strings){

returns==null;

}

publicstaticbooleanisEmpty(Strings){

returnisNull(s)||s.length()==0;

}

}

/**

*身份证号验证工具类

*

*@author小A

*<ahref="http://www.jobbole.com/members/chchxinxinjun">@since</a>4/17/2015
2:50PM

*/

publicclassCardNumberValidator{

/**

*判断身份证号是否有效(忽略身份证号复杂的判断规则)

*/

publicbooleanvalid(StringcardNumber){

if(StringUtils.isNull(cardNumber)){

thrownewNullPointerException("cardNumberisnull!");

}elseif(StringUtils.isEmpty(cardNumber)){

thrownewIllegalArgumentException("cardNumberisempty!");

}elseif(cardNumber.length()==18){

returntrue;

}else{

thrownewIllegalArgumentException(

"thelengthofcardNumbermustbe18!");

}

}

}

/**

*客户端

*

*<ahref="http://www.jobbole.com/members/chchxinxinjun">@since</a>4/17/2015
3:01PM

*/

publicclassClient{

/**

*主函数

*

*@paramargs

*/

publicstaticvoidmain(String[]args){

CardNumberValidatorvalidator=newCardNumberValidator();

StringcardNumber="433182198803211232";

if(validator.valid(cardNumber)){

System.out.println(cardNumber+"是一个有效的身份证号！");

}else{

System.out.println(cardNumber+"是一个无效的身份证号！");

}

}

}

433182198803211232是一个有效的身份证号！

protocol://hostname[:port]/path/[;parameters][?query]#fragment

GEThttp://www.cnblogs.com/mvc/Follow/GetFollowStatus.aspxHTTP/1.1

Host:www.cnblogs.com

User-Agent:Mozilla/5.0(WindowsNT6.3;WOW64;rv:37.0)Gecko/20100101Firefox/37.0

Accept:text/plain,*/*;q=0.01

Accept-Language:zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3

Accept-Encoding:gzip,deflate

X-Requested-With:XMLHttpRequest

Referer:'target='_blank'>http://www.cnblogs.com[/code]
Cookie:_ga=GA1.2.1892107667.1429258898;__gads=ID=ab3bc12f51ce0821:T=1429258914:


S=ALNI_MYk8_dptVuXGkQkQbTMuiNN4DdPcA;.CNBlogs


Cookie=D84CF73E03B7891789045C601A78AAF52AB67268B93E15C1138FE9A9CE858E9


8FE769CE0249E5C5C68D6E84DB2CBC9D9BA77ACA3993260AA8671E17F2C3AC7B3267298C6160C09A73


7AF94A353F58D0B7FF5C0AD6287EFC4DBE122883CBDD2CB42C3052C;_gat=1;


CNZZDATA1684828=cnzz_eid%3D1208659555-1429265886-%26ntime%3D1429265886


Connection:keep-alive

HTTP/1.1200OK

Date:Fri,17Apr201510:18:06GMT

Content-Type:text/html;charset=utf-8

Content-Length:128

Connection:keep-alive

Cache-Control:private

X-UA-Compatible:IE=10

<ahref="javascript:void(0);"onclick="cnblogs.UserManager.

FollowBlogger('83f9460b-63cf-dd11-9e4d-001cf0cd104b')">+加关注</a>

publicinterfaceHttpServletRequestextendsServletRequest{

StringBASIC_AUTH="BASIC";

StringFORM_AUTH="FORM";

StringCLIENT_CERT_AUTH="CLIENT_CERT";

StringDIGEST_AUTH="DIGEST";

StringgetAuthType();

Cookie[]getCookies();

longgetDateHeader(Stringvar1);

StringgetHeader(Stringvar1);

EnumerationgetHeaders(Stringvar1);

EnumerationgetHeaderNames();

intgetIntHeader(Stringvar1);

StringgetMethod();

StringgetPathInfo();

StringgetPathTranslated();

StringgetContextPath();

StringgetQueryString();

StringgetRemoteUser();

booleanisUserInRole(Stringvar1);

PrincipalgetUserPrincipal();

StringgetRequestedSessionId();

StringgetRequestURI();

StringBuffergetRequestURL();

StringgetServletPath();

HttpSessiongetSession(booleanvar1);

HttpSessiongetSession();

booleanisRequestedSessionIdValid();

booleanisRequestedSessionIdFromCookie();

booleanisRequestedSessionIdFromURL();

/**@deprecated*/

booleanisRequestedSessionIdFromUrl();

}

publicinterfaceHttpServletResponseextendsServletResponse{

intSC_CONTINUE=100;

intSC_SWITCHING_PROTOCOLS=101;

intSC_OK=200;

intSC_CREATED=201;

intSC_ACCEPTED=202;

intSC_NON_AUTHORITATIVE_INFORMATION=203;

intSC_NO_CONTENT=204;

intSC_RESET_CONTENT=205;

intSC_PARTIAL_CONTENT=206;

intSC_MULTIPLE_CHOICES=300;

intSC_MOVED_PERMANENTLY=301;

intSC_MOVED_TEMPORARILY=302;

intSC_FOUND=302;

intSC_SEE_OTHER=303;

intSC_NOT_MODIFIED=304;

intSC_USE_PROXY=305;

intSC_TEMPORARY_REDIRECT=307;

intSC_BAD_REQUEST=400;

intSC_UNAUTHORIZED=401;

intSC_PAYMENT_REQUIRED=402;

intSC_FORBIDDEN=403;

intSC_NOT_FOUND=404;

intSC_METHOD_NOT_ALLOWED=405;

intSC_NOT_ACCEPTABLE=406;

intSC_PROXY_AUTHENTICATION_REQUIRED=407;

intSC_REQUEST_TIMEOUT=408;

intSC_CONFLICT=409;

intSC_GONE=410;

intSC_LENGTH_REQUIRED=411;

intSC_PRECONDITION_FAILED=412;

intSC_REQUEST_ENTITY_TOO_LARGE=413;

intSC_REQUEST_URI_TOO_LONG=414;

intSC_UNSUPPORTED_MEDIA_TYPE=415;

intSC_REQUESTED_RANGE_NOT_SATISFIABLE=416;

intSC_EXPECTATION_FAILED=417;

intSC_INTERNAL_SERVER_ERROR=500;

intSC_NOT_IMPLEMENTED=501;

intSC_BAD_GATEWAY=502;

intSC_SERVICE_UNAVAILABLE=503;

intSC_GATEWAY_TIMEOUT=504;

intSC_HTTP_VERSION_NOT_SUPPORTED=505;

voidaddCookie(Cookievar1);

booleancontainsHeader(Stringvar1);

StringencodeURL(Stringvar1);

StringencodeRedirectURL(Stringvar1);

/**@deprecated*/

StringencodeUrl(Stringvar1);

/**@deprecated*/

StringencodeRedirectUrl(Stringvar1);

voidsendError(intvar1,Stringvar2)throwsIOException;

voidsendError(intvar1)throwsIOException;

voidsendRedirect(Stringvar1)throwsIOException;

voidsetDateHeader(Stringvar1,longvar2);

voidaddDateHeader(Stringvar1,longvar2);

voidsetHeader(Stringvar1,Stringvar2);

voidaddHeader(Stringvar1,Stringvar2);

voidsetIntHeader(Stringvar1,intvar2);

voidaddIntHeader(Stringvar1,intvar2);

voidsetStatus(intvar1);

/**@deprecated*/

voidsetStatus(intvar1,Stringvar2);

}