写三个java类，编译后放到Tomcat 5.0\webapps\struts\WEB-INF\classes\com\javer\test\struts\目录下
【HelloFrom.java】：
package com.javer.test.struts;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public final class HelloFrom
extends ActionForm
{
private String person = null;
public String getPerson()
{
return person;
}
public void setPerson(String person)
{
this.person = person;
}
public void reset(ActionMapping mapping, HttpServletRequest request)
{
this.person = null;
}
public ActionErrors validate(ActionMapping mapping,HttpServletRequest request)
{
ActionErrors errors = new ActionErrors();
if(this.person==null || this.person.length()<1)
errors.add("person",new ActionError("com.javer.test.struts.hello.error"));
return errors;
}
}
【HelloModel.java】：
package com.javer.test.struts;
public class HelloModel
{
public void saveToPersistentStore(HelloFrom hf)
{
System.out.println("Hello "+hf.getPerson()+"！这里可存储数据到数据库中！");
}
}
【HelloAction.java】：
package com.javer.test.struts;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.MessageResources;
import org.apache.commons.beanutils.PropertyUtils;
public final class HelloAction
extends Action
{
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception
{
MessageResources messages = getResources(request);
ActionErrors errors = new ActionErrors();
String person = (String) PropertyUtils.getSimpleProperty(form, "person");
if(person.indexOf(",")!=-1)
{
errors.add("person",new ActionError("com.javer.test.struts.hello.unallowed.person",form));
saveErrors(request,errors);
request.removeAttribute(mapping.getAttribute());
return new ActionForward(mapping.getInput());
}
HelloModel hm = new HelloModel();
hm.saveToPersistentStore((HelloFrom)form);
request.removeAttribute(mapping.getAttribute());
request.setAttribute("helloForm",form);
return mapping.findForward("SayHello");
}
}
这个类不是struts必需的，是我为了转化编码而增加的
【EncodingFilter.java】：
package com.javer.test.struts;
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
{
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
{
if (ignore || (request.getCharacterEncoding() == null))
{
request.setCharacterEncoding(selectEncoding(request));
}
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") || value.equalsIgnoreCase("yes"))
{
this.ignore = true;
}
else
{
this.ignore = false;
}
}
protected String selectEncoding(ServletRequest request)
{
return (this.encoding);
}
public FilterConfig getFilterConfig()
{
return filterConfig;
}
public void setFilterConfig(FilterConfig filterConfig)
{
this.filterConfig = filterConfig;
}
}