Version: Next

乱码问题

  • form.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
    <title>Title</title>
    </head>
    <body>
    <form action="/e/t1" method="post">
    <input type="text" name="name">
    <input type="submit">
    </form>
    </body>
    </html>

  • Controller

    @Controller
    public class EncodingController {
    @PostMapping("/e/t1")
    public String test1(String name, Model model) {
    model.addAttribute("msg", name);
    return "test";
    }
    }

  • 输入中文，出现乱码

过滤器解决

自定义过滤器

  • 定义一个过滤器

    public class EncodingFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {
    }
    public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain filterChain) throws IOException, ServletException {
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    filterChain.doFilter(request, response);
    }
    public void destroy() {
    }
    }

  • web.xml 在web.xml中配置这个过滤器 filter必须放在最前面

    <filter>
    <filter-name>encoding</filter-name>
    <filter-class>com.bsx.filter.EncodingFilter</filter-class>
    </filter>
    <filter-mapping>
    <filter-name>encoding</filter-name>
    <url-pattern>/*</url-pattern>
    </filter-mapping>

SpringMVC过滤器

直接配置web.xml，用过滤器org.springframework.web.filter.CharacterEncodingFilte

  • web.xml

    <filter>
    <filter-name>encoding</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>
    </filter>
    <filter-mapping>
    <filter-name>encoding</filter-name>
    <url-pattern>/*</url-pattern>
    </filter-mapping>