HTTP Status 500 -type?Exception reportmessagedescription?The server encountered an internal error () that prevented it from fulfilling this request.exceptionorg.apache.jasper.JasperException:?/doLogin.jsp?(line:?7,?column:?0)?According?to?TLD,?tag?jsp:setProperty?must?be?empty,?but?is?not org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42) org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:408) org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:133) org.apache.jasper.compiler.Parser.parseBody(Parser.java:1633) org.apache.jasper.compiler.Parser.parseOptionalBody(Parser.java:1002) org.apache.jasper.compiler.Parser.parseSetProperty(Parser.java:918) org.apache.jasper.compiler.Parser.parseStandardAction(Parser.java:1134) org.apache.jasper.compiler.Parser.parseElements(Parser.java:1451) org.apache.jasper.compiler.Parser.parse(Parser.java:138) org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242) org.apache.jasper.compiler.ParserController.parse(ParserController.java:102) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198) org.apache.jasper.compiler.Compiler.compile(Compiler.java:373) org.apache.jasper.compiler.Compiler.compile(Compiler.java:353) org.apache.jasper.compiler.Compiler.compile(Compiler.java:340) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:722)note?The full stack trace of the root cause is available in the Apache Tomcat/7.0.27 logs.Apache Tomcat/7.0.27這是doLogin.jsp的內(nèi)容<%@?page?language="java"?contentType="text/html;?charset=UTF-8" pageEncoding="UTF-8"%> <% request.setCharacterEncoding("utf-8"); %> <jsp:useBean?id="loginUser"?class="com.po.Users"?scope="page"></jsp:useBean> <jsp:setProperty?name="loginUser"?property="*"> <jsp:useBean?id="userDAO"?class="com.dao.UserDAO"?scope="page"></jsp:useBean> <% if?(userDAO.usersLogin(loginUser))?{ session.setAttribute("loginUser",?loginUser.getUsername()); request.getRequestDispatcher("login_success.jsp").forward(request,?response); }?else?{ response.sendRedirect("login_failure.jsp"); } %>