Add an object to database by Ajax and Spring MVC - ajax

Question

I follow this Link and i want to insert a user to database and then get the succes massage. My code insert successfuly the object to database but i get an error : com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Column 'login' cannot be null . this is my Ajax function :
<script type="text/javascript">
$(document).ready(function() {
function doAjaxPost() {
// get the form values
var name = $('#name_').val();
var prenom = $('#prenom_').val();
var login = $('#login_').val();
var password = $('#password_').val();
var role = $('#role_').val();
var enable = $('#enable_').val();
$.ajax({
type: "POST",
url: "${pageContext.request.contextPath}/ajouter_user",
data: "name_=" + name + "&prenom_=" + prenom + "&login_="+ login+ "&password_="+password+"&role_="+role + "&enable_="+enable,
success: function(response){
// we have the response
$('#info').html(response);
$('#nom_').val('');
$('#prenom_').val('');
$('#login_').val('');
$('#password_').val('');
$('#role_').val('');
$('#enable_').val('');
},
error: function(e){
alert('Error: ' + e);
}
});
}
</script>
this is my form :
<div id="info"></div>
<form:form name="ajf"
action="${pageContext.request.contextPath}/ajouter_user"
method="post" commandName="user">
<table id="tabmenu">
<tr>
<td id="idtab">Nom :</td>
<td><form:input type="text" path="nom" id="nom_"
class="round default-width-input" name="name_" /></td>
<td><form:errors path="nom" Class="errorbox" /></td>
</tr>
<tr>
<td id="idtab">Prénom :</td>
<td><form:input type="text" path="prenom" name="prenom_"
id="prenom_" class="round default-width-input" /></td>
<td><form:errors path="prenom" cssClass="errorbox" />
</tr>
<tr>
<td id="idtab">Login :</td>
<td><form:input type="text" path="login" name="login_"
id="login_" cssClass="round default-width-input" /></td>
<td><form:errors path="login" cssClass="errorbox" /></td>
</tr>
<tr>
<td id="idtab">Password :</td>
<td><form:input type="password" path="password"
id="password_" name="pass_" class="round default-width-input" /></td>
<td><form:errors path="password" cssClass="errorbox" /></td>
</tr>
<tr>
<td id="idtab">Séléctionner un rôle :</td>
<td><form:select path="role" id="role">
<form:option value="" label="" />
<form:option value="ROLE_ADMIN">Administrateur</form:option>
<form:option value="ROLE_USER">Simple utilisateur</form:option>
</form:select></td>
<td><form:errors path="role" cssClass="errorbox" /></td>
</tr>
<tr>
<td id="idtab">Activé :</td>
<td><form:input type="checkbox" value="true" path="enable"
id="enable_" /> Oui</td>
</tr>
<tr></tr>
<tr></tr>
<tr>
<td><input
class="button round blue image-right ic-right-arrow"
type="submit" value="Créer" onclick="doAjaxPost()" /></td>
<td><input
class="button round blue image-right ic-right-arrow"
type="reset" value="Initialiser" /></td>
</tr>
</table>
</form:form>
The Controller :
#RequestMapping(value="/ajouter_user",method=RequestMethod.POST)
public #ResponseBody String addUser(#ModelAttribute User us, BindingResult result ){
String returnText;
if(!result.hasErrors()){
userservice.AddUser(us);
returnText = "User has been added to the list.";
}else{
returnText = "Sorry, an error has occur. User has not been added to list.";
}
return returnText;
}
Also I get get the message " User has been added to the list. " in another empty page not in my div which has the id="info" as it shown in the code. What is the problem ?
**////// the whole exception \\**
mai 22, 2013 12:16:10 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Dispatcher] in context with path [/GestionDelegation] threw exception [Request processing failed; nested exception is org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL [insert into utilisateurs (login, password, nom, prenom,enable) values (?,?,?,?,?)]; Column 'login' cannot be null; nested exception is com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Column 'login' cannot be null] with root cause
com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Column 'login' cannot be null
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2941)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1623)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1715)
at com.mysql.jdbc.Connection.execSQL(Connection.java:3249)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1268)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1541)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1455)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1440)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:102)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:817)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:1)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:586)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:811)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:867)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:875)
at gestion.delegation.dao.ImplIUserDao.AddUser(ImplIUserDao.java:58)
at gestion.delegation.service.ImplIUserService.AddUser(ImplIUserService.java:22)
at gestion.delegation.controller.GestionUserController.addUser(GestionUserController.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:368)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:380)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:169)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
The method DAO
public boolean AddUser(User user) {
boolean t=true;
final String User_INSERT1 = "insert into utilisateurs (login, password, nom, prenom,enable) "
+ "values (?,?,?,?,?)";
final String User_INSERT2="insert into roles (login,role) values(?,?)";
/*
* On récupère et on utilisera directement le jdbcTemplate
*/
MessageDigestPasswordEncoder encoder = new MessageDigestPasswordEncoder("SHA");
String hash = encoder.encodePassword(user.getPassword(), "");
final String check ="select count(*) from utilisateurs where login = ?";
int result= getJdbcTemplate().queryForInt(check, new Object[]{String.valueOf(user.getLogin())});
if (result==0) {
getJdbcTemplate()
.update(User_INSERT1,
new Object[] {user.getLogin(),
hash, user.getNom(),
user.getPrenom(), user.getEnable(),
});
getJdbcTemplate().update(User_INSERT2, new Object[]{user.getLogin(),user.getRole()});
return t;
}
else { t = false ; return t;}
}

Answer 1

Write your data field as
data:{"name" : name , "prenom" : prenom , "login_" : login , "password_" :password , "role_" :role , "enable_" :enable },
insted of
data: "name_=" + name + "&prenom_=" + prenom + "&login_="+ login+ "&password_="+password+"&role_="+role + "&enable_="+enable,