JavaWeb统一解决中文乱码问题

Posted 2021-01-11 heqiuyong

package servlet;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "FilterCoding",urlPatterns = "/*")
public class FilterCoding implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {

        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;
        
        // 解决post方式提交中文乱码问题，
        // 在tomcat8及以上版本，get方式提交不存在中文乱码问题
        if ("post".equalsIgnoreCase(request.getMethod())){
            request.setCharacterEncoding("utf-8");
        }
        
        // 解决响应中文乱码问题
        response.setContentType("text/html;charset=utf-8");

        // 放行请求与响应
        chain.doFilter(request, response);
    }

    public void init(FilterConfig config) throws ServletException {

    }

}