ajax请求后台传body格式数据，服务器@RequestBody需要注意实相符

ajax请求以body传输书写方式

	$.ajax({
		type: "post",
		contentType:"application/json",
		dataType: 'json',
		data:JSON.stringify({"type":"1"}),
		url: "http://www.demo.com/test/test",
		success: function(data) {
				console.log(data)
		}
	});

如上代码，最重要的一步是

contentType:"application/json",

否则传输数据后台解析json数据会出错
后台接收方式@RequestBody(required = false) String param

ajax请求Authorization Basic

$.ajax({
		type: "POST",
		dataType: 'json',
		url: gloableUrl+"/api/v1/oauth2/token",
		data: {grant_type: 'client_credentials'},
		beforeSend: function(request) {
			var key ='username:password';
			request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
			request.setRequestHeader("grant_type", 'client_credentials');
			request.setRequestHeader ("Authorization", "Basic " + btoa(key));
		},
		success: function(data) {
		   console.log(data)
		}
	})
	
})