Home php教程 php手册 彻底解决Tomcat 5.0.19中文乱码(过滤器)

彻底解决Tomcat 5.0.19中文乱码(过滤器)

Jun 21, 2016 am 08:59 AM
encoding filter gt nbsp

  一、Include的页面乱码

  现象:include进来的页面出现乱码,其它页面正常。

  原因:Tomcat在缺省情况下使用ISO-8859-1编码,但是在include时有时Tomcat不能正确根据外层.jsp文件的编码解析include进来的文件,造成include进来的文件中的中文乱码。

  解决:这儿可以有很多解决办法,但是对于我们的中文环境,从根本上的解决办法是将Tomcat 5.0.19的核心缺省编码从ISO-8859-1修改为GBK 。可以在下面地址下载修改过的jar文件,

  jasper-compiler.jar,jasper-runtime.jar位于/common/lib下,其它位于/server/lib下,将新的.jar文件替代原.jar即可。
  
  二、提交的数据乱码

  现象:通过表单提交的数据出现乱码。

  原因:原因未明。可能是Tomcat在接收到请求后,并没有能够根据request中的信息提前正确的编码方式。

  解决:可以添加一个设置字符集的Filter。

//=================初学者注意,请将此文件放在WEB-INF\classes\filters下,
//注意先以SetCharacterEncodingFilter.java保存,然后编译一下,推荐使用eclipse
package myAddrBook;
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;

/**
 * @author Administrator
 *
 * TODO 要更改此生成的类型注释的模板,请转至
 * 窗口 - 首选项 - Java - 代码样式 - 代码模板
 */
public class SetCharacterEncodingFilter implements Filter {
  protected String encoding = null;
  protected FilterConfig filterConfig = null;
  protected boolean ignore = true;

  public void destroy() {
   this.encoding = null;
   this.filterConfig = null;
  }

 public void doFilter(ServletRequest request, ServletResponse response,
 FilterChain chain)
 throws IOException, ServletException {

  // Conditionally select and set the character encoding to be used
  if (ignore || (request.getCharacterEncoding() == null)) {
   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");
  String value = filterConfig.getInitParameter("ignore");
  if (value == null)
   this.ignore = true;
  else if (value.equalsIgnoreCase("true"))
   this.ignore = true;
  else if (value.equalsIgnoreCase("yes"))
   this.ignore = true;
  else
   this.ignore = false;

 }

 protected String selectEncoding(ServletRequest request) {
  return (this.encoding);
 }

}

//==================这段代码是我在网上摘录的,因为不知到出处所以无法标明作者
//然后将下面开始的代码加入到web.xml中,它位于WEB-INF下。
//我的QQ:22070699
//配置web.xml


   
   
  Set Character Encoding
  myAddrBook.SetCharacterEncodingFilter
 
   encoding
   GBK
 

 

 
 
  Set Character Encoding
  /*
 

 
   



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