Servlet 中文乱码解决

最新推荐文章于 2022-07-18 10:16:31 发布

jmbkeyes168

最新推荐文章于 2022-07-18 10:16:31 发布

阅读量1k

点赞数

分类专栏：技术文章标签： servlet encoding import character filter null

技术专栏收录该内容

1 篇文章

订阅专栏

本文介绍了在Web应用中遇到的中文乱码问题及其解决方案。尝试了多种方法如设置response和request编码、修改Server.xml文件等均未奏效，最终通过自定义Filter实现了中文字符的正确显示和存储。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

基本的编辑页面做好了,不过中文老是出现乱码,狂晕,怎么解决都不行,在网上查了很久,很多人都说通过下面这个方式解决:

response.setContentType("text/html;charset=GB2312");
request.setCharacterEncoding("GB2312");

不过,我用了,怎么也不行,老是出现错误,还是乱码,唉,看来还是不治本.

后来有个说通过修改../conf/Server.xml解决

不过还是乱码,看来还是不行....

后来,有人说通过Filter解决,从网上找了一个程序,唉,真的行啊,而且存入数据库里也是正确的,呵呵

java程序如下:

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.UnavailableException;
public class EncodingFilter implements Filter {
   protected String encoding = null;
   protected FilterConfig filterConfig = null;
      public void destroy() {
            this.encoding = null;
                this.filterConfig = null;
                  }
    public void doFilter(ServletRequest request, ServletResponse response,
         FilterChain chain)
         throws IOException, ServletException {
   // Select and set (if needed) the character encoding to be used
         String encoding = selectEncoding(request);
             if (encoding != null)        {
                    request.setCharacterEncoding(encoding);
                           }
    // Pass control on to the next filter
           chain.doFilter(request, response);
             }
     public void init(FilterConfig filterConfig) throws ServletException {
     this.filterConfig = filterConfig;
           this.encoding = filterConfig.getInitParameter("encoding");
               }
      protected String selectEncoding(ServletRequest request) {
             return (this.encoding);
               }
             }

在网站webapp/WEB-INF/web.xml中添加:

<filter>
<filter-name>Set Character Encoding</filter-name>
<filter-class>blog.util.EncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>GBK</param-value></init-param>
</filter>
<filter-mapping>
<filter-name>Set Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>