1. 页面码 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

   1.1 如下图，传入到后台，显示正常，不为乱码  

$.ajax({                        url:"/flowctrl/saveMessageAction.do?message="+"姓名",                        type: "get",                        //data:{message:aa},                        dataType: "text",                        success: function(data){                              alert("发布成功!");                              $("#content").html("");                         },                        error: function(data){                             alert("发布失败！");                         }                     });

   1.2 如下图，传入到后台，显示为乱码

$.ajax({                        url:"/flowctrl/saveMessageAction.do",                        type: "get",                        data:{message:"姓名"},                        dataType: "text",                        success: function(data){                              alert("发布成功!");                              $("#content").html("");                         },                        error: function(data){                             alert("发布失败！");                         }                     });

解决办法：

   强制转换为UTF-8

$.ajax({                        url:"/flowctrl/saveMessageAction.do",                        type: "get",                        data:{message:encodeURI("姓名",UTF-8")},                        contentType: "application/x-www-form-urlencoded; charset=utf-8",                        dataType: "text",                        success: function(data){                              alert("发布成功!");                              $("#content").html("");                         },                        error: function(data){                             alert("发布失败！");                         }                     });

后台代码：

   接收时也需要强制转换回来，URLDecoder.decode(message,"UTF-8");