encodingfilter.java

通过此代码可实现 学生信息的增删改查

package com.jinshi.struts.filter;

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

public class EncodingFilter implements Filter {

	String encoding = null;
	FilterConfig filterConfig = null;

	// 初始化方法
	public void init(FilterConfig filterConfig) throws ServletException {

		this.filterConfig = filterConfig;
		this.encoding = filterConfig.getInitParameter("encoding");
	}

	// 过滤处理方法
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		if (encoding != null) {
			// 对请求进行编码设置
			request.setCharacterEncoding(encoding);
		}
		// 将处理权转交给下一个处理器
		chain.doFilter(request, response);
	}

	// 销毁方法
	public void destroy() {

		this.encoding = null;
		this.filterConfig = null;
	}
}