jsp重定向中文乱码解决方案（jsp设置编码过滤器）

问题描述：

因功能需求，需要在servlet中重定向到另一个页面，但是，重定向后页面中文发生了乱码，这种情况是由于没有配置编码过滤器导致的，解决方法如下：

 

1、新增编码过滤器类

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;

/**
 * 编码过滤器
 * @author Administrator
 *
 */

public class EncodingFilter implements Filter {

  public void destroy() {
    // TODO Auto-generated method stub
  }

  public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
      throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) req;
    HttpServletResponse response = (HttpServletResponse) resp;
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    chain.doFilter(request, response);
  }

  public void init(FilterConfig arg0) throws ServletException {
    // TODO Auto-generated method stub

  }
}

2、在web.xml文件中配置此过滤器

<filter>
   <filter-name>EncodingFilter</filter-name>
   <filter-class>demo.web.EncodingFilter</filter-class>
  </filter>
  <filter-mapping>
   <filter-name>EncodingFilter</filter-name>
   <url-pattern>/*</url-pattern>
  </filter-mapping>