초기화 매개 변수를 가져옵니다
초기화-PARAM web.xml의 초기화 매개 변수를 사용하여
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>GetInitParameterServlet</servlet-name>
<servlet-class>servlet.GetInitParameterServlet</servlet-class>
<init-param>
<param-name>username</param-name>
<param-value>admin</param-value>
</init-param>
<init-param>
<param-name>password</param-name>
<param-value>123456</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>GetInitParameterServlet</servlet-name>
<url-pattern>/servlet/GetInitParameterServlet</url-pattern>
</servlet-mapping>
GetInitParameterServlet :라는 서블릿을 생성
이후 web.xml의 초기화에서 값을 전달 먼저 세트 변수 GetInitParameterServlet 인터페이스
private String username;//用户名
private String password;//密码
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
this.getInitParameter("username")초기 값 web.xml을 얻는 방법
this.setUsername (this.getInitParameter ( "사용자 이름") );
서블릿 초기화 페이지의 값을 얻을
public void init() throws ServletException {
this.setUsername(this.getInitParameter("username"));
this.setPassword(this.getInitParameter("password"));
취득한의 출력값
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html; charset=utf-8");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print("<h2>"+"用户名:"+this.getUsername()+"</h2>");
out.print("<h2>"+"密码:"+this.getPassword()+"</h2>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
MVC
모델 1, 모델 2 두 모델 소개
