http协议笔记

http协议：URL、三次握手、http请求头信息，请求方式、响应码信息、协议的特点、TCP、IP四层协议、OSI七层协议

content="text/html;charset=utf-8"里面的内容就是webview加载时的参数mimetype

数据流量比较小的时候利用doGet 大的时候用doPost

post发送方式比较安全 get是通过url后面附上参数发送的

http发送请求头发送信息

General

Remote Address:192.168.1.106:8080

Request URL:http://192.168.1.106:8080/web/MyServlet

Request Method:POST

Status Code:200 OK

Response Headers

Content-Length:19

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

Date:Sun, 08 Nov 2015 08:45:46 GMT

Server:Apache-Coyote/1.1

Request Headers

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8

Accept-Encoding:gzip, deflate

Accept-Language:zh-CN,zh;q=0.8

Cache-Control:max-age=0

Connection:keep-alive

Content-Length:21

Content-Type:application/x-www-form-urlencoded

Cookie:JSESSIONID=E83D4C4F8162B4CAD03AF8AFD5D42638

Host:192.168.1.106:8080

Origin:http://192.168.1.106:8080

Referer:http://192.168.1.106:8080/web/

Upgrade-Insecure-Requests:1

User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36

Form Data

name:张

age:11

httpclient通过get方式发送请求

创建httpget对象

创建httpclient对象并调用execute方式发送请求 成功后会返回response对象

判断其类型或得响应码是否为200 然后利用EntityUtils获得数据

HttpResponse response;

HttpGet httpGet = new HttpGet(url);

HttpClient httpClient = new DefaultHttpClient();

try {

response = httpClient.execute(httpGet);

if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {

String content = EntityUtils.toString(response.getEntity());

System.out.println("content:" + content);

}

多线程下载中用到的：

1、http协议字段 Range "bytes="+start+"-"+end

2、RandomAccessFile设置吸入的位置

3、开启线程发送网络请求

-----------------------------7df28ac180a3e

Content-Disposition: form-data; name="file"; filename="C:\Users\born\Desktop\2012081210373.jpg"

Content-Type: image/jpeg

<二进制文件数据未显示>

---------------------------7df28ac180a3e--

在Android中开发HTTP客户端的一般方法：先用浏览器试一试，

然后看浏览器传给server的request header和request body是什么，

然后我们在开发Android的HTTP客户端的时候也仿照这同样的header和body设置就行了