Cookie在Get请求和Post请求中的区别
1.使用Get请求
说明如下：
在AServlet中new一个Cookie让客户端保存
在BServlet中显示在AServlet中创建的cookie
1.1在浏览器中直接输入URL：http://localhost:8080/Demo2/AServlet
的请求头
GET /Demo2/AServlet HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: zh-CN,zh;q=0.8,en;q=0.61.2在浏览器中直接输入URL：http://localhost:8080/Demo2/BServlet
的请求头
GET /Demo2/servlet/BServlet HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36
Accept-Encoding: gzip, deflate, sdch
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6
*************************************************
Cookie: uuid=08ee7eda-9cd9-49dd-8630-7a4d16fd494e
*************************************************2.使用Post请求
说明如下：
在index.jsp中先后分别请求AServlet和BServlet
index.jsp
<body>
<form action="/Demo2/AServlet" method="post">
<input type="submit" value="post-AServlet"/>
</form>
<form action="/Demo2/BServlet" method="post">
<input type="submit" value="post-BServlet"/>
</form>
</body>2.1请求AServlet
POST /Demo2/AServlet HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Content-Length: 0
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://localhost:8080
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: http://localhost:8080/Demo2/index.jsp
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6
******************************************************
Cookie: JSESSIONID=D4288C7911533D4275DDE31AE33B961C
******************************************************2.2请求BServlet
POST /Demo2/BServlet HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Content-Length: 0
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://localhost:8080
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: http://localhost:8080/Demo2/index.jsp
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6
********************************************************
Cookie: JSESSIONID=D4288C7911533D4275DDE31AE33B961C; uuid=743468ab-c83d-4298-b127-477fa6194140
*********************************************************POST /Demo2/BServlet HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Content-Length: 0
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://localhost:8080
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: http://localhost:8080/Demo2/index.jsp
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6
*****************************************************
Cookie: JSESSIONID=D4288C7911533D4275DDE31AE33B961C; uuid=743468ab-c83d-4298-b127-477fa6194140
***************************************************** 可以发现使用get和post所请求的头的Cookie头不一样，get请求一开始没有cookie头字段而post请求始终有cookie头字段其cookie为JSESSIONID
先把这个问题记着，搞懂了，分析一下~