sturts2上传文件的类型不允许却还是上次成功

Question

JSP代码：     <s:form action="login/upload" method="post" enctype="multipart/form-data">
       <s:textfield name="username" label="用户名"/>
       <s:file name="file" label="文件"/>
       <s:file name="file" label="文件2"/>
       <s:file name="file" label="文件3"/>
       <s:submit value="提交"></s:submit>
     </s:form>
Action代码：package com.action;import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class UploadAction extends ActionSupport {
private static final long serialVersionUID = 1L;
private final static String UPLOADDIR = "/upload";
private String username;
private List<File> file; private List<String> fileFileName; public List<String> getFileFileName() {
return fileFileName;
} public void setFileFileName(List<String> fileFileName) {
this.fileFileName = fileFileName;
} public List<String> getFileContentType() {
return fileContentType;
} public void setFileContentType(List<String> fileContentType) {
this.fileContentType = fileContentType;
} private List<String> fileContentType; public String getUsername() {
return username;
} public void setUsername(String username) {
this.username = username;
} public List<File> getFile() {
return file;
} public void setFile(List<File> file) {
this.file = file;
} @Override
public String execute() throws Exception {
upload();
return super.execute();
} private void upload() throws Exception {
for (int i = 0; i < file.size(); i++) {
InputStream in = new FileInputStream(file.get(i));
String dir = ServletActionContext.getRequest().getRealPath(
UPLOADDIR); File uploadFile = new File(dir, this.getFileFileName().get(i));
OutputStream out=new FileOutputStream(uploadFile);

byte[] buffer=new byte[1024*1024];
int length;
while((length=in.read(buffer))>0){
out.write(buffer,0,length);
}
out.close();
in.close();
}
}}
struts.xml：<?xml version="1.0" encoding="GBK" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts>
    <!--<constant name="struts.devMode" value="false" />-->
    <constant name="struts.i18n.encoding" value="GBK"/>
    <constant name="struts.custom.i18n.resources" value="app"/>
    
      <!-- 系统常量定义，定义上传文件临时存放路径 -->   
      <constant name="struts.multipart.saveDir" value="c:\"></constant> 
      
    
    <package name="default" namespace="/" extends="struts-default">
    
        <interceptors>
              <interceptor name="loginInterceptor" class="com.interceptor.LoginInterceptor"/>
              <interceptor-stack name="myStack">
                    <interceptor-ref name="loginInterceptor"/>
                    <interceptor-ref name="defaultStack"/>
              </interceptor-stack>
        </interceptors>
        
        <global-results>
             <result name="login">/index.jsp</result>
        </global-results>
    
        <action name="loginAction"  class="com.action.LoginAction">
           <result name="success">/Login_Success.jsp </result>
            <result name="input">/index.jsp</result>
            <result name="faile">/index.jsp</result>
        </action>        <action name="languageAction" class="com.action.LanguageAction">
          <result>/index.jsp</result>
        </action>
        
        <action name="registerAction" class="com.action.RegisterAction">
          <result type="dispatcher">/Register_Success.jsp</result>
          <result name="input">/register.jsp</result>
        </action>
        
        <action name="register">
          <result>/register.jsp</result>
        </action>
        
        <action name="test" class="com.action.TestLoginAction">
         <result>/register.jsp</result>
         <interceptor-ref name="myStack"/>
        </action>
        
        <action name="upload" class="com.action.UploadAction">
            <result name="success">/upload_success.jsp</result>
            <!--<result name="input">/upload.jsp</result>-->
            
            <interceptor-ref name="myStack"/>
            <interceptor-ref name="fileUpload">
<param name="maximumSize">1024*1024</param>
<param name="allowedTypes">image/gif,image/jpeg</param>
</interceptor-ref>
        </action>
        
    </package>
</struts>
不仅文件的类型控制没用，大小限制也没用，哪个高手帮我分析分析，谢谢了

Answer 1

super.execute();直接返回SUCCESS？

Answer 2

其中拦截器拦截了“异常 (不允许类型)”,程序就会覆盖这个SUCCESS的，直接跳到相应的结果页面而不应该跳转到成功页面，看程序的运行结果似乎是这个拦截器没起作用。

Answer 3

最关键是filederror里都有信息里居然还返回到success页面，文件也上传成功了，搞笑，不晓得是BUG否，哎