开发笔记:如何将数据从angularjs传递给spring控制器

Angular js代码

var app = angular.module('myApp', ['ngResource']);
app.controller('UserController', ['$scope', '$resource', '$http',function($scope,$resource,$http)
{
$scope.deleteRec = function()
{
$http({
method: 'DELETE',
url: 'delete/:username',
data: {username: $scope.myform.username},
headers: {'Content-type': 'application/json;charset=utf-8'}
}).then(function(response){
$scope.Messages = response;
});
};
}]);


控制器代码

@RequestMapping(value="/delete/{username}")
@ResponseBody
public String delete(@PathVariable String username)
{
System.out.println("delete1");
String user=retrievedataservice.delete(username);
System.out.println("delete2");
return "delete successfully";
}


实际上，它的用户名不能从角度js传递给spring Controller。它的错误就像请求处理失败一样;嵌套异常是java.lang.NullPointerException说明服务器遇到意外情况，导致服务器无法完成请求。