jquery $ .ajax跨域GET工作但不是POST

我无法弄清楚为什么GET跨域请求正在工作，但使用完全相同的服务器URL的POST请求不是。 我在服务器上设置了以下响应头（使用JERSEY），用于所有请求方法（GET，POST，PUT，DELETE和OPTIONS）：

header("Access-Control-Allow-Origin", "*") header("Access-Control-Allow-Credentials", "true") header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS") header("Access-Control-Allow-Headers", "accept, origin, authorization, content-type, content-length, connection, x-requested-with, user-agent") 

GET请求正在跨域工作

 $.ajax({ type:"GET", url: base_url + "workoutdays?memberId=100350194", beforeSend: function(xhr) { xhr.setRequestHeader("Authorization", auth); }, success: function(msg) { $('#results').html(msg[0].workoutName); }, error: function (xhRequest, errorText, thrownError) { alert(errorText); } }); 

但POST请求不是

 $.ajax({ type:"POST", url: base_url + "workoutdays?memberId=100350194", data: {workoutId : "4"}, beforeSend: function(xhr) { xhr.setRequestHeader("Authorization", auth); }, success: function(msg) { $('#results').html(msg[0].workoutName); }, error: function (xhRequest, errorText, thrownError) { alert(errorText); } });