JavaWeb编码配置

解决Web应用乱码问题

最新推荐文章于 2023-02-16 13:38:08 发布

原创最新推荐文章于 2023-02-16 13:38:08 发布 · 267 阅读

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文章标签：

#character #filter #import #string #class

本文介绍了一种通过创建过滤器SetCharacterEncodingFilter来解决Web应用程序中中文乱码的方法。该过滤器设置请求的字符编码为UTF-8，并在web.xml中进行了相应的配置。

1.创建包命名为 com.common.tools.filter
2.在com.common.tools.filter包中创建类、类名为：SetCharacterEncodingFilter (将做为处理乱码的类)
类中完整代码如下：

import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;
import javax.servlet.FilterChain;
import java.io.IOException;

public class SetCharacterEncodingFilter implements Filter {

   protected FilterConfig filterConfig;
   protected String encodingName;
   protected boolean enable;

   public SetCharacterEncodingFilter() {
     this.encodingName = "UTF-8";
     this.enable = false;
   }

   public void init(FilterConfig filterConfig) throws ServletException {
     this.filterConfig = filterConfig;
   }

   public void doFilter(ServletRequest request,
                        ServletResponse response,
                        FilterChain chain)
                     throws IOException, ServletException {
       request.setCharacterEncoding("UTF-8");
      chain.doFilter(request, response);
}

   public void destroy() {
   }
}
3.在项目中的web.xml中添加配置：
<filter>
  <filter-name>Set Character Encoding</filter-name>
  <filter-class>com.common.tools.filter.SetCharacterEncodingFilter</filter-class>
  <init-param>
   <param-name>encoding</param-name>
   <param-value>UTF-8</param-value>
  </init-param>
</filter>

<filter-mapping>
<filter-name>Set Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

4.配置ok!
*注:要保证项目中的编码格式一致，例如：在项目中出现的编码格式统一为UTF-8,GBK或GB2312,都可以支持中文;(出现乱码一般都为中文)