ajax請求後臺傳body格式數據，服務器@RequestBody需要注意實相符

ajax請求以body傳輸書寫方式

	$.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)
		}
	});

如上代碼，最重要的一步是

contentType:"application/json",

否則傳輸數據後臺解析json數據會出錯
後臺接收方式@RequestBody(required = false) String param

ajax請求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)
		}
	})
	
})