使用Filter设置添加数据库格式为中文代码_filter 添加依赖数据库-优快云博客

本文介绍了一个名为MyFilter的过滤器实现，该过滤器通过设置字符编码为UTF-8来确保请求和响应的正确处理，并使用@WebFilter注解应用于所有URL模式。

代码如下：

package hy.wk.trainSys.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet Filter implementation class MyFilter
 */
@WebFilter(urlPatterns="/*")
public class MyFilter implements Filter {

    /**
     * Default constructor. 
     */
    public MyFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
		
		HttpServletRequest request=(HttpServletRequest) req;
		HttpServletResponse response=(HttpServletResponse) res;
		
		request.setCharacterEncoding("utf-8");  
		response.setCharacterEncoding("utf-8");  
		response.setContentType("text/html;charset=utf-8"); 
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}