什么情况下调用doGet()和doPost()?
Jsp页面中的form标签里的method属性为get时调用doGet(),为post时调用doPost()
测试方法如下：
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>get</h1>
<!-- 绝对路径路径访问 <form action="http://localhost:8080/untitled/myServlet" method="get">-->
<!-- 绝对路径访问—省略写法 <form action="/untitled/myServlet" method="get">-->
<form action="myServlet" method="get"><!--相对路径访问 省略了 ./-->
<input type="submit">
</form>
<h1>post</h1>
<form action="http://localhost:8080/untitled/myServlet" method="post">
<input type="submit">
</form>
</body>
</html>MyServlet实现类
@WebServlet("/myServlet")
public class MyServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("get方法");
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
System.out.println("set方法");
}
}
总结：
默认情况是调用doGet()方法，JSP页面中的Form表单的method属性设置为post的时候，调用的为doPost()方法；为get的时候，调用deGet()方法。