请求响应乱码

post

响应编码

response.setContentType(“text/html;charset=UTF-8”);

response.setCharacterEncoding("UTF-8");

一般设置响应体用第一种

 get

请求编码  Tomcat-9会出现乱码

String name = request.getParameter（"name"）;
byte[] bytes = name.getBytes（"ISO8859-1"）;//打散:将name字符串按照原编码进行打散

name=new String（bytes，"utf-8"）;//组装:将bytes字节数组按照指定字符编码进行组装，组装为String

優化
String name = request.getParameter（"name"）;
name=new String（name.getBytes("ISO8859-1")，"utf-8"）;//组装:将bytes字节数组按照指定字符编码进行组装，组装为String