ECLIPS开发STRUTS失败

Question

2个JAVA文件
1、LoginAction
package com.is.action; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import org.apache.struts.action.Action; 
import org.apache.struts.action.ActionForm; 
import org.apache.struts.action.ActionForward; 
import org.apache.struts.action.ActionMapping; import com.is.form.LoginForm; public class LoginAction extends Action 
{ 
private static final long serialVersionUID = 1L; public ActionForward execute
(ActionMapping mapping, 
ActionForm form, 
HttpServletRequest request,
HttpServletResponse response) 
throws Exception { // this line is here for when the input page is upload-utf8.jsp, // it sets the correct character encoding for the response String encoding = request.getCharacterEncoding(); if ((encoding != null) && 
(encoding.equalsIgnoreCase("GB2312")))
{ response.setContentType
("text/html; charset=GB2312"); } else { response.setContentType
("text/html; charset=GBK"); } try { if (form instanceof LoginForm) 
{ LoginForm theForm = (LoginForm) form; if(theForm.getUsername().equals("user") && theForm.getPassword().equals("123456")) 
{ return new ActionForward("/welcome.do?type=true"); } 
else {                           return new ActionForward("/welcome.do?type=false"); } } 
} catch (Exception e) 
{ } // this shouldn't happen in this example return null; 
  
 } 
}
LoginForm.java
package com.is.form;
import org.apache.struts.action.ActionForm;
public class LoginForm extends ActionForm 
{
private static final long 
serialVersionUID = 1L;
private String username = "";
private String password = "";
/**
* @return Returns the password.
*/
public String getPassword()
{
return password;
} /*** @param password The password to set.
*/
public void setPassword(String password)
{
 this.password = password;
}
/**
* @return Returns the username.
*/
public String getUsername() 
{
return username;
}
/**
* @param username The username to set.
*/
public void setUsername(String username) 
{
this.username = username;
}
}

Answer 1

struts-config.xml
<?xml version="1.0"?> 
<!DOCTYPE struts-config PUBLIC "-
//Apache Software Foundation
//DTD Struts Configuration 1.2//EN"
"http://struts.apache.org/dtds
/struts-config_1_2.dtd"> 
<struts-config> 
<data-sources> 
</data-sources> 
<form-beans> 
<form-bean 
name="loginForm" 
type="com.is.form.LoginForm"/> 
</form-beans> 
<global-exceptions> 
</global-exceptions> 
<global-forwards> 
</global-forwards> 
<action-mappings> 
<action 
path="/index" 
forward="/index.jsp"/> 
<action 
path="/welcome" 
forward="/welcome.jsp"/>    
<action 
path="/logincheck" 
type="com.is.action.LoginAction" 
name="loginForm" 
scope="request" 
validate="true"/> 
</action-mappings> 
 <controller processorClass=
 "org.apache.struts.tiles.TilesRequestProcessor"/> 
<message-resources parameter="MessageResources"/> 
<plug-in className=
"org.apache.struts.tiles.TilesPlugin"> 
<set-property property="definitions-config" 
value="/WEB-INF/tiles-defs.xml"/> 
<set-property property="moduleAware" value="true"/> 
</plug-in> 
<plug-in className=
"org.apache.struts.validator.ValidatorPlugIn"> 
<set-property property="pathnames"
value="/WEB-INF/validator-rules.xml,
/WEB-INF/validation.xml"/> 
</plug-in> 
</struts-config>

Answer 2

web.xml
<?xml version="1.0" encoding="Shift_JIS"?><!DOCTYPE web-app
  PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app>
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>2</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>2</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>  <taglib>
    <taglib-uri>/tags/struts-bean</taglib-uri>
    <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>/tags/struts-html</taglib-uri>
    <taglib-location>/WEB-INF/struts-html.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>/tags/struts-logic</taglib-uri>
    <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>/tags/struts-nested</taglib-uri>
    <taglib-location>/WEB-INF/struts-nested.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>/tags/struts-tiles</taglib-uri>
    <taglib-location>/WEB-INF/struts-tiles.tld</taglib-location>
  </taglib>  <!--
  <taglib>
    <taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
    <taglib-location>/WEB-INF/c.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>http://java.sun.com/jstl/fmt</taglib-uri>
    <taglib-location>/WEB-INF/fmt.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>http://java.sun.com/jstl/sql</taglib-uri>
    <taglib-location>/WEB-INF/sql.tld</taglib-location>
  </taglib>  <taglib>
    <taglib-uri>http://java.sun.com/jstl/x</taglib-uri>
    <taglib-location>/WEB-INF/x.tld</taglib-location>
  </taglib>
  -->
</web-app>

Answer 3

return 错误了。return new ActionForward（"string");括号里面只是一个字符串和
forward="/index.jsp"/> 
<action 
path="/welcome" 
forward="/welcome.jsp"/>    
<action 
这里的path相对应的。你可以这样改：return new ActionForward（"welcome");如果返回字符串是"welcome"的话就挑转到welcome.jsp页面了。。慢慢去理解一下struts－config.xml的配置方法