java - Spring MVC Form - Request method 'GET' not supported -
i trying learn spring mvc don't know how solve problem.
why "request method 'get' not supported" when got url "http://localhost:8080/springtest3/addstudent.html"?
studentcontroller.java:
package com.springtest3; import javax.validation.valid; import org.springframework.stereotype.controller; import org.springframework.ui.modelmap; import org.springframework.validation.bindingresult; import org.springframework.web.bind.annotation.modelattribute; import org.springframework.web.bind.annotation.requestmapping; import org.springframework.web.bind.annotation.requestmethod; import org.springframework.web.bind.annotation.sessionattributes; import org.springframework.web.servlet.modelandview; @controller @sessionattributes public class studentcontroller { @requestmapping(value = "/students", method = requestmethod.get) public modelandview showstudent() { return new modelandview("student", "command", new student()); } @requestmapping(value = "/addstudent", method = requestmethod.post) public string addstudent(@modelattribute("student") student student, bindingresult result/*, final modelmap model*/) { if (result.haserrors()) { system.out.println("error error error"); } /*model.addattribute("name", student.getname()); model.addattribute("age", student.getage()); model.addattribute("id", student.getid());*/ system.out.println("name: " + student.getname()); return "redirect:students.html"; } } addstudent.jsp:
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%> <html> <head> <title>spring mvc form handling</title> </head> <body> <h2>student information</h2> <form:form method="post" action="addstudent.html"> <table> <tr> <td><form:label path="name">name</form:label></td> <td><form:input path="name" /></td> </tr> <tr> <td><form:label path="age">age</form:label></td> <td><form:input path="age" /></td> </tr> <tr> <td><form:label path="id">id</form:label></td> <td><form:input path="id" /></td> </tr> <tr> <td colspan="2"> <input type="submit" value="submit"/> </td> </tr> </table> </form:form> </body> </html>
solution:
suggested below added method in studentcontroller.java:
@requestmapping(value = "/addstudent", method = requestmethod.get) public void test(model model) { model.addattribute("student", new student()); } but need change following line in addstudent.jsp:
<form:form method="post" action="addstudent.html"> to
<form:form method="post" modelattribute="student" action="addstudent.html">
this because when put http://localhost:8080/springtest3/addstudent.html in url, request initiated. however, addstudent method in controller has
@requestmapping(value = "/addstudent", method = requestmethod.post) which filters allow post requests access method.
in order allow requests, change mapping addstudent method with
@requestmapping(value = "/addstudent", method = requestmethod.get) 
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