服务器无法解析ajax post参数中的某些内容,这是什么原因造成的?

我正在发出一个ajax post请求,我可以看到值正在客户端的头中传递。

但是,在服务器端,接收的值为空?当服务器试图解析该值时,它似乎被该值中的某些内容阻塞了。因为如果我使用encodeURIComponent,它工作得很好。是什么导致了这种行为?

<script>

    //var body = getDataFromTheEditor(); //doesn't work
    //var body = JSON.stringify(getDataFromTheEditor()); //doesn't work
    var body = encodeURIComponent(getDataFromTheEditor()); //works but don't want to do this...

    var params = {body: body};
    $.post("../../../../CommitEdit", $.param(params));

</script>

Servlet:

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    String body = request.getParameter("body");
    System.out.println(body); //blank if i pass it normally :(

}

在传递formdata时,我直接从报头复制了它(因此这里有一些服务器显然不喜欢的东西):

pastebin - unparsed formdata

pastebin - parsed formdata

Content-Length: 64488
Content-Type: application/x-www-form-urlencoded; charset=UTF-8

有什么想法吗?谢谢