更好的解決辦法可能是使用另一種模板引擎FreeMarker的一樣或速度,這是獨立的Servlet API更適合文本基於電子郵件。
然而,這可以通過包裝HttpServletResponse
和覆蓋getWriter
方法來實現。下面的代碼適用於glassfish。
的Servlet:
public class TestServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
HttpServletResponseWrapper responseWrapper = new HttpServletResponseWrapper(response) {
private final StringWriter sw = new StringWriter();
@Override
public PrintWriter getWriter() throws IOException {
return new PrintWriter(sw);
}
@Override
public String toString() {
return sw.toString();
}
};
request.getRequestDispatcher("test.jsp").include(request, responseWrapper);
String content = responseWrapper.toString();
System.out.println("Output : " + content);
response.getWriter().write(content);
}
}
JSP:
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Hello world</title>
</head>
<body>
<h1><%= "Hello world from a JSP!" %></h1>
</body>
</html>
你爲什麼要這麼做? –
您可以使用'java.net.URL'和'java.net.URLConnection'類來請求Web資源。 – adatapost
@AVD不能,jsp不能公開訪問 – lolotron