struts关于文件上传，总是出错，哪位大哥帮忙看看？？
这是action代码：

Java code

package com.itcast.action;import java.io.File;import java.io.IOException;import org.apache.commons.io.FileUtils;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class FileUpLoadAction extends ActionSupport{    private File image;    private String imageFileName;            @Override    public String execute() throws Exception {        String realPath =  ServletActionContext.getRequest().getRealPath("/images");        System.out.println(realPath);        File savefile=new File(new File(realPath),imageFileName);//        if(!savefile.exists()){            savefile.getParentFile().mkdir();//如果文件夹不存在，在创建一个文件夹        }                FileUtils.copyFile(image, savefile);        return "success";    }    public File getImage() {        return image;    }    public void setImage(File image) {        this.image = image;    }    public String getImageFileName() {        return imageFileName;    }    public void setImageFileName(String imageFileName) {        this.imageFileName = imageFileName;    }        }

Java code

警告: Error setting expression 'image' with value '[Ljava.lang.String;@1e09c92'ognl.MethodFailedException: Method "setImage" failed for object com.itcast.action.FileUpLoadAction@1e7d730 [java.lang.NoSuchMethodException: com.itcast.action.FileUpLoadAction.setImage([Ljava.lang.String;)]    at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1292)    at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1481)    at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:85)    at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)    at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:27)    at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2318)    at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:77)    at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2318)    at ognl.ASTProperty.setValueBody(ASTProperty.java:127)    at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)    at ognl.SimpleNode.setValue(SimpleNode.java:301)    at ognl.Ognl.setValue(Ognl.java:737)    at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:217)    at com.opensymphony.xwork2.ognl.OgnlValueStack.trySetValue(OgnlValueStack.java:186)    at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:173)    at com.opensymphony.xwork2.ognl.OgnlValueStack.setParameter(OgnlValueStack.java:151)    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:292)    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:203)    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:211)    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:90)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:192)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:510)    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)    at java.lang.Thread.run(Thread.java:722)Caused by: java.lang.NoSuchMethodException: com.itcast.action.FileUpLoadAction.setImage([Ljava.lang.String;)    at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1233)    ... 67 more 
 

HTML code

<form action ="" method="post"enctype="multipart/form-data">