我正在尝试Validate Spring表单，其中包括：
Method 1 approach is followed.
型号：
public class Student {
private Long id;
@NotEmpty
private String name;
@NotEmpty
private String address;
@NotEmpty
private String contactNumber;
@NotEmpty
private String grade;
@NotEmpty
private String gender;
@NotEmpty
@Email
private String email;
@NotEmpty
private List<String> extraSubjects = new ArrayList<String>();
/**** Corresponding getter setters ****/
}
控制器： -
@Controller
@RequestMapping("/student")
public class StudentController {
private Logger logger = Logger.getLogger(StudentController.class);
@RequestMapping("/home")
public String getHomePage() {
return "home";
}
@RequestMapping(value = "/add", method = RequestMethod.GET)
public String addStudentForm(Model model) {
Student student = new Student();
model.addAttribute("studentForm", student);
LinkedHashMap<Integer, String> gradeList = new LinkedHashMap<Integer, String>();
gradeList.put(1, "Class 1");
gradeList.put(2, "Class 2");
gradeList.put(3, "Class 3");
gradeList.put(4, "Class 4");
gradeList.put(5, "Class 5");
model.addAttribute("gradeList", gradeList);
List<String> genderList = new ArrayList<String>();
genderList.add("Male");
genderList.add("Female");
model.addAttribute("genderList", genderList);
student.setGender("Male");
List<String> extraSubjects = new ArrayList<String>();
extraSubjects.add("Math II");
extraSubjects.add("Population");
List<String> extraSubjectsStd = new ArrayList<String>();
extraSubjectsStd.add("Math II");
extraSubjectsStd.add("Population");
student.setExtraSubjects(extraSubjectsStd);
extraSubjects.add("Computer");
model.addAttribute("extraSubjects", extraSubjects);
return "addstudent";
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String addStudent(
@Valid @ModelAttribute("studentForm") Student student,
BindingResult result) {
if (result.hasErrors()) {
logger.info("Returning add page with errors");
return "addstudent";
}
//Stuffs to save in database
return "redirect:add";
}
}
JSP页面： -
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Insert title here</title>
<style>
.error {
color: #ff0000;
}
.errorblock {
color: #000;
background-color: #ffEEEE;
border: 3px solid #ff0000;
padding: 8px;
margin: 16px;
}
</style>
</head>
<body>
<form:form action="add" method="post" commandName="studentForm">
<form:errors path="*" cssClass="errorblock" element="div" />
<table border="0">
<tr>
<td colspan="3" align="center"><h3>Add Student</h3></td>
</tr>
<tr>
<td><form:label path="name">
<spring:message code="label.studentname" />
</form:label></td>
<td><form:input path="name" /></td>
<td><form:errors path="name" cssClass="error" /></td>
</tr>
<tr>
<td><form:label path="address">
<spring:message code="label.address" />
</form:label></td>
<td><form:input path="address" /></td>
<td><form:errors path="address" cssClass="error" />
</tr>
<tr>
<td>Contact Number:</td>
<td><form:input path="contactNumber" /></td>
<td><form:errors path="contactNumber" cssClass="error" />
</tr>
<tr>
<td><form:label path="grade">
<spring:message code="label.grade" />
</form:label></td>
<td><form:select path="grade">
<form:option value="" label="--- Select ---" />
<form:options items="${gradeList}" />
</form:select></td>
<td><form:errors path="grade" cssClass="error" />
</tr>
<tr>
<td>Gender:</td>
<td><form:radiobuttons path="gender" items="${genderList}" />
</td>
<td><form:errors path="gender" cssClass="error" />
</tr>
<tr>
<td>Extra Subjects:</td>
<td><form:checkboxes items="${extraSubjects}"
path="extraSubjects" /></td>
<td><form:errors path="extraSubjects" cssClass="error" />
</tr>
<tr>
<td>Email Address:</td>
<td><form:input items="${email}" path="email" /></td>
<td><form:errors path="email" cssClass="error" />
</tr>
<tr>
<td></td>
<td align="center"><input type="submit" value="Save" /></td>
<td></td>
</tr>
</table>
</form:form>
</body>
</html>
现在，当我运行我的应用程序时，表单会在我perform get operation时加载。 radio buttons, select fields, and checkboxes are loaded中的值也已选中。如果我submit my form with no validation errors it works fine但是当我发送表单with validation errors时，我会收到以下错误：
堆栈跟踪： -
Jun 26, 2014 4:32:00 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.IllegalArgumentException: 'items' must not be null
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.web.servlet.tags.form.AbstractMultiCheckedElementTag.setItems(AbstractMultiCheckedElementTag.java:85)
at org.apache.jsp.WEB_002dINF.pages.addstudent_jsp._jspx_meth_form_005fradiobuttons_005f0(addstudent_jsp.java:810)
at org.apache.jsp.WEB_002dINF.pages.addstudent_jsp._jspService(addstudent_jsp.java:360)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:266)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1225)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1012)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:931)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:833)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
DEBUG org.springframework.web.servlet.DispatcherServlet- Error rendering view [org.springframework.web.servlet.view.JstlView: name 'addstudent'; URL [/WEB-INF/pages/addstudent.jsp]] in DispatcherServlet with name 'mvc-dispatcher'
org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/pages/addstudent.jsp at line 62
59: </tr>
60: <tr>
61: <td>Gender:</td>
62: <td><form:radiobuttons path="gender" items="${genderList}" />
63: </td>
64: <td><form:errors path="gender" cssClass="error" />
65: </tr>
Stacktrace:
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:266)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1225)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1012)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:931)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:833)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: 'items' must not be null
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.web.servlet.tags.form.AbstractMultiCheckedElementTag.setItems(AbstractMultiCheckedElementTag.java:85)
at org.apache.jsp.WEB_002dINF.pages.addstudent_jsp._jspx_meth_form_005fradiobuttons_005f0(addstudent_jsp.java:810)
at org.apache.jsp.WEB_002dINF.pages.addstudent_jsp._jspService(addstudent_jsp.java:360)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
... 42 more
Jun 26, 2014 4:32:00 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [mvc-dispatcher] in context with path [/sms] threw exception [An exception occurred processing JSP page /WEB-INF/pages/addstudent.jsp at line 62
59: </tr>
60: <tr>
61: <td>Gender:</td>
62: <td><form:radiobuttons path="gender" items="${genderList}" />
63: </td>
64: <td><form:errors path="gender" cssClass="error" />
65: </tr>
Stacktrace:] with root cause
java.lang.IllegalArgumentException: 'items' must not be null
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.web.servlet.tags.form.AbstractMultiCheckedElementTag.setItems(AbstractMultiCheckedElementTag.java:85)
at org.apache.jsp.WEB_002dINF.pages.addstudent_jsp._jspx_meth_form_005fradiobuttons_005f0(addstudent_jsp.java:810)
at org.apache.jsp.WEB_002dINF.pages.addstudent_jsp._jspService(addstudent_jsp.java:360)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:266)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1225)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1012)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:931)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:833)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:807)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
我能够发现我用于List的{{1}}似乎是specifying genders, gradeList, extraSubjects。
答案 0 :(得分：3)
在您获得部分内容时，您不仅会使用studentForm，还会使用genderList，gradeList和extraSubjects来填充模型。你在jsp中使用all。
在帖子部分中，您通过请求中的参数初始化了studentForm。 但您永远不会初始化列表。所以在JSP中，${gradeList}，${genderList}和${extraSubjects}都是null，所以错误。
如果验证失败，您必须在转发到视图之前初始化addStudent中的三个列表。你可以按照Neil McGuigan的建议做到这一点，即通过弹簧自动填充模型，或者自己填充它。例如，您可以：
void initLists(Model model) {
LinkedHashMap<Integer, String> gradeList = new LinkedHashMap<Integer, String>();
gradeList.put(1, "Class 1");
gradeList.put(2, "Class 2");
gradeList.put(3, "Class 3");
gradeList.put(4, "Class 4");
gradeList.put(5, "Class 5");
model.addAttribute("gradeList", gradeList);
List<String> genderList = new ArrayList<String>();
genderList.add("Male");
genderList.add("Female");
model.addAttribute("genderList", genderList);
List<String> extraSubjects = new ArrayList<String>();
extraSubjects.add("Math II");
extraSubjects.add("Population");
extraSubjects.add("Computer");
model.addAttribute("extraSubjects", extraSubjects);
}
并在initLists和addStudentForm中致电addStudent。最后的示例代码：
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String addStudent(
@Valid @ModelAttribute("studentForm") Student student,
BindingResult result, Model model) {
if (result.hasErrors()) {
logger.info("Returning add page with errors");
initLists(model);
return "addstudent";
}
//Stuffs to save in database
return "redirect:add";
}
当然，从那里调用addStudentForm后，应从initLists删除所有列表初始化...
答案 1 :(得分：0)
将您的控制器更改为：
@Controller
@RequestMapping("/student")
@SessionAttributes({"studentForm", "gradeList", "genderList", "extraSubjects"})
public class StudentController {
private Logger logger = Logger.getLogger(StudentController.class);
@ModelAttribute("studentForm")
Student getStudent() {
Student student = new Student();
student.setGender("Male");
List<String> extraSubjectsStd = new ArrayList<String>();
extraSubjectsStd.add("Math II");
extraSubjectsStd.add("Population");
student.setExtraSubjects(extraSubjectsStd);
return student;
}
@ModelAttribute("gradeList")
GradeList getGradeList() {
LinkedHashMap<Integer, String> gradeList = new LinkedHashMap<Integer, String>();
gradeList.put(1, "Class 1");
gradeList.put(2, "Class 2");
gradeList.put(3, "Class 3");
gradeList.put(4, "Class 4");
gradeList.put(5, "Class 5");
return gradeList;
}
@ModelAttribute("genderList")
List<String> getGenderList() {
List<String> genderList = new ArrayList<String>();
genderList.add("Male");
genderList.add("Female");
return genderList;
}
@ModelAttribute("extraSubjects")
List<String> getExtraSubjects() {
List<String> extraSubjects = new ArrayList<String>();
extraSubjects.add("Math II");
extraSubjects.add("Population");
extraSubjects.add("Computer");
return extraSubjects;
}
@RequestMapping("/home")
public String getHomePage() {
return "home";
}
@RequestMapping(value = "/add", method = RequestMethod.GET)
public String addStudentForm() {
return "addstudent";
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String addStudent(
@Valid @ModelAttribute("studentForm") Student student,
BindingResult result,
SessionStatus sessionStatus) {
if (result.hasErrors()) {
logger.info("Returning add page with errors");
return "addstudent";
}
sessionStatus.setComplete();
//Stuffs to save in database
return "redirect:add";
}
}
我们正在努力：