Java编码过滤器

最新推荐文章于 2025-09-07 20:32:33 发布

转载最新推荐文章于 2025-09-07 20:32:33 发布 · 92 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：https://my.oschina.net/4k9LCGA/blog/395119

文章标签：

#java #python #web.xml

2019独角兽企业重金招聘Python工程师标准>>>

代码如下：

/**
 * 编码过滤器
 */
package com.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.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author Admin
 *
 */
public class EncodingFilter implements Filter {
	
	private FilterConfig filterConfig = null;
	private String targetEncoding = "UTF-8";//默认系统过滤编码
	private boolean isEnabled = true;//是否启用编码过滤
	
	/**
	 * 编码过滤
	 */
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		if (this.isEnabled) {// 使用编码过滤
			HttpServletRequest req = (HttpServletRequest) request;
			HttpServletResponse res = (HttpServletResponse) response;
			req.setCharacterEncoding(targetEncoding);
			res.setCharacterEncoding(targetEncoding);
		}
		chain.doFilter(request, response);
	}

	/**
	 * 过滤器初始化
	 */
	public void init(FilterConfig config) throws ServletException {
		this.filterConfig = config;
		String encoding = filterConfig.getInitParameter("Encoding").trim();
		this.targetEncoding = encoding.equals("")?this.targetEncoding:encoding;
		this.isEnabled = Boolean.valueOf(filterConfig.getInitParameter("Enabled"));
	}
	
	public EncodingFilter() {
	}

	public void destroy() {
	}
}

web.xml配置：

<!-- 编码过滤 -->
	<filter>
		<display-name>EncodingFilter</display-name>
		<filter-name>EncodingFilter</filter-name>
		<filter-class>com.map.pgis.popu.filter.EncodingFilter</filter-class>
		<init-param>
			<description>过滤字符编码</description>
			<param-name>Encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<description>是否启用编码过滤器</description>
			<param-name>Enabled</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	
	<filter-mapping>
		<filter-name>EncodingFilter</filter-name>
		<url-pattern>/EncodingFilter</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>EncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

转载于:https://my.oschina.net/4k9LCGA/blog/395119