根据robbin的提示，项目中关于字符集问题的基本解决方案
所用环境是struts2+ spring 2.5+hibernate 3.2 . DB用mysql 5.0
数据库的字符集 mysql4.1 之后由于可以设定表的字符集，于是需要注意的就是在创建表的时候设置字符集。 创建表的时候，我们添加如下代码character set =utf8; hibernate读写字符集 因为这里用spring+hibernate,所以在设置dataSource bean的时候进行设计就可以了<property name="url" value="jdbc:mysql://localhost:3306/100see?useUnicode=true&characterEncoding=utf8" /> 添加web.xml过滤器 过滤器定义 写道 Servlet过滤器是用户请求和处理程序之间的一层处理程序，能够对与过滤器关联的URL请求和响应进行检查和修改。Servlet过滤器能够在 Servlet被调用之前检查Request对象，修改Request Header和Request内容；在Servlet被调用之后检查Response对象，修改Response Header和Response内容。Servlet过滤器过滤的URL资源可以是Servlet、JSP、HTML文件，或者是整个路径下的任何资源。多个过滤器可以构成一个过滤器链，当请求与过滤器关联的URL的时候，过滤器链上的过滤器就会挨个发生作用，除非某个过滤器终止了这个过程。 由于不同项目的字符集设置有可能导致字符集混乱，因此我们通过设置过滤器，完成servlet之间的字符集转换问题 很多时候我们都会用到spring的过滤器<filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> 但是我们发现spring的过滤器只对request做字符集的过滤。因此建议实现自己的过滤器package com.starweb.core.util; 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; public class EncodingFilter implements Filter { /** * The default character encoding to set for requests that pass through this * filter. */ protected String encoding = null; /** * The filter configuration object we are associated with. If this value is * null, this filter instance is not currently configured. */ protected FilterConfig filterConfig = null; /** * Should a character encoding specified by the client be ignored? */ protected boolean ignore = true; // --------------------------------------------------------- Public Methods /** * Take this filter out of service. */ public void destroy() { this.encoding = null; this.filterConfig = null; } /** * Select and set (if specified) the character encoding to be used to * intERPret request parameters for this request. * * @param request * The Servlet request we are processing * @param result * The servlet response we are creating * @param chain * The filter chain we are processing * * @exception IOException * if an input/output error occurs * @exception ServletException * if a servlet error occurs */ 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); response.setContentType("text/html;charset="+encoding+"\""); } // System.out.println("requestEncoding : " + request.getCharacterEncoding()); // System.out.println("responseEncoding : " + response.getCharacterEncoding()); } // Pass control on to the next filter chain.doFilter(request, response); } /** * Place this filter into service. * * @param filterConfig * The filter configuration object */ 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 Methods /** * Select an appropriate character encoding to be used, based on the * characteristics of the current request and/or filter initialization * parameters. If no character encoding should be set, return * <code>null</code>. * <p> * The default implementation unconditionally returns the value configured * by the <strong>encoding</strong> initialization parameter for this * filter. * * @param request * The servlet request we are processing */ protected String selectEncoding(ServletRequest request) { return (this.encoding); } } jsp字符集问题 jsp页面设置UTF-8<%@ page language="java" pageEncoding="UTF-8"%> struts2字符集设置 struts2 可以设置字符集。默认情况下iso-8859-1字符集, 设置struts2.xml<constant name="struts.i18n.encoding" value="UTF-8" /> ps： struts2的国际化有时候失败，自己用filter控制字符集问题比较好
