解决SpringMVC中post请求乱码问题_springmvc中post请求出现乱码的原因如何在配置文件中解决-优快云博客

本文链接：https://blog.youkuaiyun.com/rabbit123123123/article/details/121458980

本文介绍了两种在SpringMVC项目中设置统一字符编码的方法：一是利用SpringMVC自带的CharacterEncodingFilter，二是自定义过滤器实现请求和响应的编码设置。

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方法一：使用SpringMVC提供的过滤器，在web.xml文件中加入代码

    <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>

方法二：手写一个简单的过滤器类，再在web.xml文件中加入以下代码


import javax.servlet.*;
import java.io.IOException;

public class EncodingFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        servletRequest.setCharacterEncoding("utf-8");
        servletResponse.setCharacterEncoding("utf-8");
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override
    public void destroy() {

    }
}

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