No Access-Control-Allow-Origin - Cross Domain - ajax

Question

I am wanting to access a service which is queried from AJAX, but when I call this service indicates me the following in the console browser:
XMLHttpRequest cannot load http://192.168.108.166:8080/LdapRESTEasy/rest/RESTEasyLdap/login. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access.
I'm working with Apache Tomcat 6 and create a service which I RESTeasy returns a JSON with user data when login.
My javascript code which contains the AJAX is as follows:
function login(){
var hashNoEnconding = document.getElementById("user").value +'|'+ document.getElementById("pass").value;
var hashEnconding = base64Encode(hashNoEnconding);
var url = "http://192.168.108.166:8080/LdapRESTEasy/rest/RESTEasyLdap/login";
$.ajax({
url:url,
type:'POST',
encoding:"UTF-8",
headers: {
"Content-Type":"application/json; charset=UTF-8"
},
contentType: "application/json; charset=UTF-8",
accept: "application/json; charset=UTF-8",
cacheControl: "no-cache",
beforeSend: function (request){
request.setRequestHeader("authorization", hashEnconding);
},
success:function (data, status, xhr) {
},
error: function (data) {
}
});
}
From the apache tomcat server configure the web.xml which recommend adding the CORS filters
<filter>
<filter-name>CORS</filter-name>
<filter-class>com.thetransactioncompany.cors.CORSFilter</filter-class>
<init-param>
<param-name>cors.allowOrigin</param-name>
<param-value>*</param-value>
</init-param>
<init-param>
<param-name>cors.supportedMethods</param-name>
<param-value>GET, POST, HEAD, PUT, DELETE</param-value>
</init-param>
<init-param>
<param-name>cors.supportedHeaders</param-name>
<param-value>Content-Type, X-Requested-With, Accept, Authentication, Authorization</param-value>
</init-param>
<init-param>
<param-name>cors.exposedHeaders</param-name>
<param-value>Set-Cookie</param-value>
</init-param>
<init-param>
<param-name>cors.supportsCredentials</param-name>
<param-value>false</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CORS</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
I also added the apache libraries in / lib:
cors-filter-1.9.2.jar
java-property-utils-1.9.jar
I have read in the internet about this problem, but still fails to solve
Please, Can I help me?
Thanks!!

Answer 1

Yah I found the solution. The problem is in error 500 Internal Server which indicated to me that the parameter sent by request did not reach the service. The same appeared as NULL.
I modify the service to receive a GET and it worked!