Java文字乱码问题及页面转发

1.请求文字编码格式

 request.setCharacterEncoding("UTF-8");

2.响应文字编码格式

  response.setCharacterEncoding("utf-8");

3.响应内容文件格式

  response.setContentType("text/html");

 PrintWriter out = response.getWriter();  

4.根据底层编码格式转换字符类型

String str = request.getParameter("name");
String name = new String(str.getBytes("ISO-8859-1"),"utf-8");

弹框

out.println("<script>");
out.println("alert('用户名或密码错误！');");
out.println("location='" + request.getContextPath() + "/page/Login.jsp'");
out.println("</script>");

页面转发

request.getRequestDispatcher("page/LoginSuccess.jsp").forward(request, response);

页面重定向

response.sendRedirect("page/LoginSuccess.jsp");