問(wèn)題描述

如下，對(duì)含有特殊字符的text進(jìn)行JSON封裝，通過(guò)Ajax傳遞，

var data = {"Id": id, "text": text};

在后臺(tái)無(wú)法進(jìn)行數(shù)據(jù)接收。

解決方案

將

req.setRequestHeader("Content-Type",        "application/x-www-form-urlencoded");

換為:

req.setRequestHeader("Content-type",
        "application/json; charset=utf-8");

后臺(tái)接受數(shù)據(jù):

 //進(jìn)行json數(shù)據(jù)的接收    StringBuilder sb = new StringBuilder();    BufferedReader br = request.getReader();    char[] buff = new char[10000];    int len;    while((len = br.read(buff)) != -1){      sb.append(buff, 0, len);    }    String mess = sb.toString();    //將字符串轉(zhuǎn)換為JSON對(duì)象    JSONObject jsonObject=new JSONObject(mess);    //獲取其中的值    jsonObject.getInt("Id");    //含有特殊字符的文本需要先進(jìn)行轉(zhuǎn)碼    URLDecoder.decode(jsonObject.getString("text"), "UTF-8"));

這樣就可以正確的進(jìn)行文本的接收啦~