封装请求协议:获取method uri以及请求参数
public class Request {
//协议信息
private String requestInfo;
//请求方式
private String method;
//请求的uri
private String url;
//请求的参数
private String queryStr;
public Request(InputStream is)
{
byte[] datas=new byte[1024*1024];
int len = 0;
try {
len=is.read(datas);
this.requestInfo =new String(datas,0,len);
System.out.println(requestInfo);
} catch (IOException e) {
e.printStackTrace();
return;
}
//分解字符串
parseRequestInfo();
}
public Request(Socket client) throws IOException
{
this(client.getInputStream()); //构造器的相互调用,只能放在首行
}
private void parseRequestInfo()
{
System.out.println("----分解----");
//获取请求方式
System.out.println("1、获取请求方式:开头到第一个/之间");
this.method=this.requestInfo.substring(0,this.requestInfo.indexOf("/")).toLowerCase();
//获取url
System.out.println("2、获取url:第一个/到HTTP/第一个字母之间");
System.out.println("---可能包含请求参数?前面的为url");
//url:获取第一个/的位置
int startIdx1=this.requestInfo.indexOf("/")+1; //要/之后的内容
//url:获取HTTP/的第一个字母的位置
int endIdx2=this.requestInfo.indexOf("HTTP/"); //返回第一个字母的位置
//url:分割字符串
this.url=this.requestInfo.substring(startIdx1,endIdx2);
//获取?的位置
int queryIdx=this.url.indexOf("?"); //大于零表示存在
if(queryIdx>0)
{
String[] urlArray=this.url.split("\\?");//必须转义
this.url=urlArray[0];
queryStr=urlArray[1]; //请求参数
}
System.out.println(this.url);
}
}
Server:
public class Server04 {
private ServerSocket serverSocket ;
public static void main(String[] args) {
Server04 server = new Server04();
server.start();
}
//启动服务
public void start() {
try {
serverSocket = new ServerSocket(8888);
receive();
} catch (IOException e) {
e.printStackTrace();
System.out.println("服务器启动失败....");
}
}
//接受连接处理
public void receive() {
try {
Socket client = serverSocket.accept();
System.out.println("一个客户端建立了连接....");
//获取请求协议
Request request=new Request(client);
//关注了内容
Response response=new Response(client); //创建好了输出流
response.print("<html>"); //通过输出流输出
response.print("<head>");
response.print("<title>");
response.print("服务器响应成功");
response.print("</title>");
response.print("</head>");
response.print("<body>");
response.print("shsxt server终于回来了。。。。");
response.print("</body>");
response.print("</html>");
//关注了状态码
response.pushToBrowser(200);
} catch (IOException e) {
e.printStackTrace();
System.out.println("客户端错误");
}
}
//停止服务
public void stop() {
}
}
Response:
public class Response {
private BufferedWriter bw;
//正文
private StringBuilder content;
//协议头(状态行与请求头 回车)信息
private StringBuilder headInfo;
private int len; //正文的字节数
private final String BLANK =" ";
private final String CRLF = "\r\n";
private Response() {
content =new StringBuilder();
headInfo=new StringBuilder();
len =0;
}
public Response(Socket client) {
this();
try {
bw=new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));
} catch (IOException e) {
e.printStackTrace();
headInfo = null;
}
}
public Response(OutputStream os) {
this();
bw=new BufferedWriter(new OutputStreamWriter(os));
}
//流模式动态添加内容
public Response print(String info) {
content.append(info);
len+=info.getBytes().length;
return this;
}
public Response println(String info) {
content.append(info).append(CRLF);
len+=(info+CRLF).getBytes().length;
return this;
}
//推送响应信息
public void pushToBrowser(int code) throws IOException {
if(null ==headInfo) {
code = 505;
}
createHeadInfo(code);
bw.append(headInfo);
bw.append(content);
bw.flush();
}
//构建头信息
private void createHeadInfo(int code) {
//1、响应行: HTTP/1.1 200 OK
headInfo.append("HTTP/1.1").append(BLANK);
headInfo.append(code).append(BLANK);
switch(code) {
case 200:
headInfo.append("OK").append(CRLF);
break;
case 404:
headInfo.append("NOT FOUND").append(CRLF);
break;
case 505:
headInfo.append("SERVER ERROR").append(CRLF);
break;
}
//2、响应头(最后一行存在空行):
headInfo.append("Date:").append(new Date()).append(CRLF);
headInfo.append("Server:").append("shsxt Server/0.0.1;charset=GBK").append(CRLF);
headInfo.append("Content-type:text/html").append(CRLF);
headInfo.append("Content-length:").append(len).append(CRLF);
headInfo.append(CRLF);
}
}
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。