Tomcat 表单乱码解决办法
Filter web.xml 的配置
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package filters;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.HttpServletRequestWrapper;public class TomcatFormFilter implements Filter {/** * Request.java * 对 HttpServletRequestWrapper 进行扩充, 不影响原来的功能并能提供所有的 HttpServletRequest * 接口中的功能. 它可以统一的对 Tomcat 默认设置下的中文问题进行解决而只需要用新的 Request 对象替换页面中的 * request 对象即可. */class Request extends HttpServletRequestWrapper{ public Request(HttpServletRequest request) { super(request); } /** * 转换由表单读取的数据的内码. * 从 ISO 字符转到 UTF-8 或 GBK. */ public String toChi(String input) { try { byte[] bytes = input.getBytes("ISO8859-1"); return new String(bytes, "UTF-8"); } catch (Exception ex) { } return null; } /** * Return the HttpServletRequest holded by this object. */ private HttpServletRequest getHttpServletRequest() { return (HttpServletRequest)super.getRequest(); } /** * 读取参数 -- 修正了中文问题. */ public String getParameter(String name) { return toChi(getHttpServletRequest().getParameter(name)); } /** * 读取参数列表 - 修正了中文问题. */ public String[] getParameterValues(String name) { String values[] = getHttpServletRequest().getParameterValues(name); if (values != null) { for (int i = 0; i < values.length; i++) { values[i] = toChi(values[i]); } } return values; }}public void destroy() { }public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest httpreq = (HttpServletRequest)request; if(httpreq.getMethod().equals("POST")) { request.setCharacterEncoding("GBK"); } else { request = new Request(httpreq); } chain.doFilter(request, response);}public void init(FilterConfig filterConfig) throws ServletException {}}??