How to deal with Chinese garbled characters when applying AJAX in JAVA

Solution to Chinese garbled characters when applying AJAX in JAVA: 1. Use the escape or encodeURI method when submitting ajax, and must use it twice; 2. Use the decode method of the [java.net.URLDecoder] class in background java .

【Related learning recommendation: java basic tutorial】

Chinese garbled code for applying AJAX in JAVA Solution:

1. Use the escape or encodeURI method when submitting ajax. Must be used twice

2. The background java uses the decode method of the java.net.URLDecoder class.

Foreground page partial code:

/**
 * marging是一个js对像用于承载页面部分功能和参数
 * xmlHttp是改写后的AJAX对像，属性paramString为post方式发送到服务端的参数
 * 前台，后台页面都采用的GBK编码,使用了编码过滤器
 */
xmlHttp.paramString="mName="+marging.mNames;
//参数经过2次encodeURI编码
xmlHttp.paramString=encodeURI(xmlHttp.paramString);
xmlHttp.paramString=encodeURI(xmlHttp.paramString);
//发送保存请求
var xmlReq=xmlHttp.getTextByPost("mailMerginged.jsp");

Backend page code:

/**
 *  当调用request.getParameter()函数时，会自动进行一次URI的解码过程
 *  调用时内置的解码过程会导致乱码出现。而URI编码两次后，request.getParameter()函数
 *  得到的是原信息URI编码一次的内容。再用可控的解码函数java.net.URLDecoder.decode()
 *  就可解出原始的正确的信息。
 */
String mName=java.net.URLDecoder.decode(request.getParameter("mName"),"UTF-8");

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