解决中文乱码问起

Java对数据库进行CRUD操作出现乱码
先查看web.xml有没有配置字符编码过滤器

<filter>
  <filter-name>CharacterEncodingFilter</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  <init-param>
    <param-name>encoding</param-name>
    <param-value>utf-8</param-value>
  </init-param>
  <init-param>
      <param-name>forceEncoding</param-name>
      <param-value>true</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>CharacterEncodingFilter</filter-name>
  <url-pattern>*.html</url-pattern>
</filter-mapping>

在配置mysql的url路径时加上： ?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull

例如·：jdbc.url=jdbc:mysql://localhost:3306/house?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull

JSP页面中文乱码

在页面的开头加入这两句话：

<%@ page language=“java” contentType=“text/html; charset=UTF-8” pageEncoding=“UTF-8”%>
<% request.setCharacterEncoding(“UTF-8”); %>

若是doPost方式：在方法的开头加上：req.setCharacterEncoding(“UTF-8”);
若是doGet方式：username new String(req.getParameter(“username”).getBytes(“ISO-8859-1”), “UTF-8”);
若是响请求：加上这句话：res.setContentType(“text/html;charset=utf-8”);