Parameters:Invalid chunk ignored

当POST body 或 query-string参数以‘&’结束或者包含‘&=’、‘&&’这样的字符串时出现警告: Parameters: Invalid chunk ignored;

jquery中：

$.ajax({
   url:provinceurl,   
      type: 'POST',
      dataType: 'xml',
      data: "name=John",  //这里不能写成   data: "&name=John",   否则 会 报 Parameters:Invalid chunk ignored         
      timeout: 1000,                          
      error: function(){                     
      alert('Error loading XML document');
      },
      success: function(xml){           
       $(xml).find("effectivesign").each(function(){                           
           var provinceId=$(this).children("YXBJ_DM").text();      
           var provinceName=$(this).children("YXBJ_MC").text();
           var tempOption = document.createElement("option");
      tempOption.value = provinceId;
      tempOption.innerHTML  = provinceName;
      select.append(tempOption);
       });
     }
 });