HttpServletRequest
什么是HttpServletRequest?
HttpServletRequest代表客戶端的請(qǐng)求,用戶通過(guò)Http協(xié)議訪問(wèn)服務(wù)器,HTTP請(qǐng)求中的所有信息會(huì)被封裝到HttpServletRequest,通過(guò)這個(gè)HttpServletRequest的方法,獲得客戶端的所有信息;
HttpServletRequest的使用
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setCharacterEncoding("utf-8");
String username = req.getParameter("username");
String password = req.getParameter("password");
String[] hobbys = req.getParameterValues("hobbys");
System.out.println("=============================");
//后臺(tái)接收中文亂碼問(wèn)題
System.out.println(username);
System.out.println(password);
System.out.println(Arrays.toString(hobbys));
System.out.println("=============================");
System.out.println(req.getContextPath());
//通過(guò)請(qǐng)求轉(zhuǎn)發(fā)
//這里的 / 代表當(dāng)前的web應(yīng)用
req.getRequestDispatcher("/success.jsp").forward(req,resp);
}

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