再次理解ActionForm

xiaoxiao2022-08-13  119

该项目是我自己写的, 该项目知识点如下: 该项目是多个表单一步步提交,在最后页面展示各个页面输入的信息; 1.多个表单应该对应多个ActionForm,此处用一个ActionForm包含了各个表单的属性 2.每个表单(step1.jsp,step2.jsp,step3.jsp,finish.jsp)的提交,都对应一个Action来处理, 不过此处没有写Action类,只是写了多个action标签,而具体的转向由forward属性来负责; 3.多个提交(step1.jsp,step2.jsp,step3.jsp,finish.jsp)对应的Action共用一个ActionForm(StepActionForm.java) 4.如果在一个页面想得到多个action提交处理的数据,需要在各个action标签中设置:scope="session" 5.ActionForm接收数据时会出现乱码,采用过滤器来处理乱码问题 ==========过滤器类SetCharacterEncodingFilter.java========= public class SetCharacterEncodingFilter implements Filter { private String encoding; public void destroy() { } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { request.setCharacterEncoding(this.encoding); chain.doFilter(request,response); } public void init(FilterConfig filterConfig) throws ServletException { this.encoding=filterConfig.getInitParameter("encoding"); } } ============web.xml============= <filter> <filter-name>SetCharacterEncodingFilter</filter-name> <filter-class>com.wlh.servlet.SetCharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>GBK</param-value> </init-param> </filter> <filter-mapping> <filter-name>SetCharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> 相关资源:敏捷开发V1.0.pptx
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