Servlet的解析路径配置
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Servlet的体系结构
Servlet -- 接口
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GenericServlet -- 抽象类
|
HttpServlet -- 抽象类-
GenericServlet:将Servlet接口中其他的方法做了默认空实现,只将service()方法作为抽象
- 将来定义Servlet类时,可以继承GenericServlet,实现service()方法即可
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HttpServlet:对http协议的一种封装,简化操作
- 定义类继承HttpServlet
- 复写doGet/doPost方法
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Servlet相关配置
- urlpartten:Servlet访问路径
- 一个Servlet可以定义多个访问路径 : @WebServlet({"/d4","/dd4","/ddd4"})
- 路径定义规则:
- /xxx:路径匹配
- /xxx/xxx:多层路径,目录结构
- *.自定义扩展名:扩展名匹配
- urlpartten:Servlet访问路径
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
//指定路径注解
@WebServlet("/demo3")
//多路径
//@WebServlet({"/d3","/de3","/dem3","/demo3"})
//含有子路径
//@WebServlet("/user/demo3")
//通配符及通配符+自定义拓展名
//@WebServlet({"/*","*.txt"})
public class ServletDemo3 extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("doget...");
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("dopost...");
}
}