servlet的doGet请求和doPost请求:
doGet请求
1.新建一个servlet类继承HttpServlet
继承HttpServlet
2.重写doGet和doPost方法
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
System.out.println(“处理get请求”);
PrintWriter pw=resp.getWriter();
//设置编码格式
// resp.setContentType(“text/html:charset=utf-8”);
pw.println(“Hello Servlet
”);
pw.println(“jiujiuchenfabiao
”);
String str=”“;
for(int i=1;i<10;i++){
for(int j=1;j<=i;j++){
str+=i+”*”+j+”=”+(i*j)+” “;
}
str+=”
”;
}
pw.println(str);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
System.out.println("处理post请求");
PrintWriter pw=resp.getWriter();
// resp.setContentType(“text/html:charset=utf-8”);
pw.println(“Hello Servlet
”);
pw.println(“jiujiuchenfabiao
”);
String str=”“;
for(int i=1;i<10;i++){
for(int j=1;j<=i;j++){
str+=i+”*”+j+”=”+(i*j)+” “;
}
str+=”
”;
}
pw.println(str);
}
3.jsp中编写
第一个servlet例子
//进行get请求
get方式请求
//进行post请求
4.在web.xml中配置
**
ServletDemo
servlet.ServletDemo
**
**
ServletDemo
/servlet/ServletDemo
**
这个servlet的get请求和post请求访问的地址就是:http://127.0.0.1:8080/test01/servlet