【JavaScript】SpringMVC Http请求415 Unsupported Media Type的问题

需要在请求$ajax请求头部增加

contentType: "application/json; charset=utf-8",

例如:

function sendEmailToCandidate(id) {
    console.log(id);
    var params = {};
    params["vars"] = {"formId": id};
    params["tableMap"] = {};
    params["flag"] = "";
    $.ajax({
        "contentType": "application/json; charset=utf-8",
        "type": "POST",
        "url": "push_approve",
        "data": JSON.stringify(params),
        "success": function (resp) {
            console.log(resp);
            showSuccessTips(resp.data);
        },
        error: function () {
            showCommonNoticeDialog('网络错误', 'icon-bolt',
                generateNoticeMsg('网络错误，请刷新后重试!'), 300);
        }
    });
}