利用Filter解决Post请求中文乱码

一、创建一个拦截所有请求的拦截器

@WebFilter(filterName = "login",
        dispatcherTypes = DispatcherType.REQUEST,
        urlPatterns = {"/*"})
public class LoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
    }

    @Override
    public void destroy() {

    }
}

二、进行统一响应编码处理

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

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