i new java , trying write application using spring-mvc , hibernate.
i getting error "caused by: java.lang.illegalstateexception: neither bindingresult nor plain target object bean name 'command' available request attribute" in jsp file when try populate dropdown list elements database
@controller public class metalcontroller { @autowired mtmetalservice mtmetalservice; @autowired mtformulaservice mtformulaservice; @requestmapping(value = "/", method = requestmethod.get) public modelandview homepage() { modelandview model =new modelandview("homepage"); return model; } @requestmapping(value = "/inputmetal.html", method = requestmethod.get) public modelandview metalinputform() { mtformula mtformula = new mtformula(); list<mtformula> formulalist = mtformulaservice.getall(mtformula); modelandview model =new modelandview("metalinput"); model.addobject(formulalist); (mtformula x: formulalist) { system.out.println(x.getformulacode()); } return model; } @requestmapping(value = "/metalviewinput.html", method = requestmethod.get) public modelandview metalviewform() { modelandview model =new modelandview("metalviewinput"); return model; } @requestmapping(value="/createmetal.html", method = requestmethod.post) public modelandview createmetal(@modelattribute("mtmetal") mtmetal mtmetal) { mtmetalservice.persist(mtmetal); modelandview model =new modelandview("redirect:/inputmetal.html?success=true"); return model; } @requestmapping(value="/viewmetal.html", method={ requestmethod.get, requestmethod.post}) public modelandview mcmetalview( @requestparam("metalcode") string metalcode) { mtmetal mtmetal = new mtmetal(); mtmetal = mtmetalservice.getone(mtmetal, metalcode); modelandview model =new modelandview("metalview"); model.addobject("msg", "metal input form"); model.addobject(mtmetal); return model; } @requestmapping(value = "/metallist.html", method={ requestmethod.get}) public modelandview metallistview() { mtmetal mtmetal = new mtmetal(); list<mtmetal> mtmetallist = mtmetalservice.getall(mtmetal); modelandview model = new modelandview("metallistview"); model.addobject(mtmetallist); return model; } } <%@ page language="java" contenttype="text/html; charset=utf-8" pageencoding="utf-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <%@ taglib prefix="form" uri="http://www.springframework.org ags/form"%> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %> <form:form method="post" action="/labcontrol/createmetal.html"> <c:if test="${param.success eq true}"></c:if> metal save - successful <table border=1> <tr><th>metal details entry form</th></tr> <tr><td>metal code1 </td><td> <input type=text name="metalcode"/></td></tr> <tr><td>metal description </td><td> <input type=text name="metaldesc"/></td></tr> <tr><td>metal unit of measure </td><td> <input type=text name="metalunit"/></td></tr> <tr><td>loss formula </td><td><form:select path="formulalist"> <form:option value="-" label="--please select"/> <form:options items="${formulalist}" itemvalue="formulacode" itemlabel="formula"/> </form:select> </td></tr> <tr><td>treatment recovery </td><td> <input type=number name="treatmentrecovery"/></td></tr> <tr><td>salable mass </td><td> <input type=number name="saleablemass"/></td></tr> <tr><td>pricing unit </td><td> <input type=number name="priceperunit"/></td></tr> <tr><td>gross value </td><td> <input type=number name="grossvalue"/></td></tr> <tr><td><input type="submit" value="save record"></td></tr> </table> </form:form>
<%@ page language="java" contenttype="text/html; charset=utf-8" pageencoding="utf-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <%@ taglib prefix="form" uri="http://www.springframework.org ags/form"%> <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %> <form:form method="post" action="/labcontrol/createmetal.html"> <c:if test="${param.success eq true}"></c:if> metal save - successful <table border=1> <tr><th>metal details entry form</th></tr> <tr><td>metal code1 </td><td> <input type=text name="metalcode"/></td></tr> <tr><td>metal description </td><td> <input type=text name="metaldesc"/></td></tr> <tr><td>metal unit of measure </td><td> <input type=text name="metalunit"/></td></tr> <tr><td>loss formula </td><td><form:select path="formulalist"> <form:option value="-" label="--please select"/> <form:options items="${formulalist}" itemvalue="formulacode" itemlabel="formula"/> </form:select> </td></tr> <tr><td>treatment recovery </td><td> <input type=number name="treatmentrecovery"/></td></tr> <tr><td>salable mass </td><td> <input type=number name="saleablemass"/></td></tr> <tr><td>pricing unit </td><td> <input type=number name="priceperunit"/></td></tr> <tr><td>gross value </td><td> <input type=number name="grossvalue"/></td></tr> <tr><td><input type="submit" value="save record"></td></tr> </table> </form:form>} 
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