How to get params from a POST in Spring MVC? - spring-mvc

Question

In my js file, i have an Ext.Ajax.request to remove a user from a table. The most important thing is to send the username. This is my request code:
Ext.Ajax.request({
url: 'deleteUser.html',
method: 'POST',
headers: {'Content-Type': 'text/html'},
waitTitle: 'Connecting',
waitMsg: 'Sending data...',
params: {
username:username
},
scope:this,
success: received,
failure: function(){console.log('failure');}
});
In the firebug i can see the post myapp/admin/deleteUser.html. In the post tab appears username=example.
In the server-side i have a controller which catchs the post:
#RequestMapping(method=RequestMethod.POST, value="/deleteUser")
public #ResponseBody Map<String,String> deleteUserHandler(#RequestParam("username")String username, Model model){
userService.deleteUser(username);
Map<String,String> responseMap = new HashMap<String, String>();
responseMap.put("message", "Success");
return responseMap;
}
if i have #RequestParam("username") i receive a 400 error (Incorrect request) and if i try another ways to get params i get null.
Could anybody help me please?

Answer 1

In the firebug i can see the post myapp/admin/deleteRole.html.
In the post tab appears username=example.
you say you can see web calling deleteRole.html.
But in your ajax and your Controller it should be call "/deleteUser"
How if you log something in your controller so we can determine if that function have been called.
First try connection between your html mapped to your function correctly
#RequestMapping(method=RequestMethod.POST, value="/deleteUser")
public #ResponseBody String deleteUserHandler(#RequestParam("username") String username){
System.out.println("deleteUserHandler called");
return "{\"message\" : \"success\"}";
}
If your function called it should be ok..