struts2文件上传报错
Caused by: java.lang.NoSuchMethodException: xhy.shjc.UserAction.setUploadFile([Ljava.lang.String;)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1230)
... 63 more
/-- Encapsulated exception ------------\
java.lang.NoSuchMethodException: xhy.shjc.UserAction.setUploadFile([Ljava.lang.String;)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1230)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1478)
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:2315)
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:77)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2315)
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)
。。。。

Action的代码是

package xhy.shjc;
import java.io.File;
import java.io.IOException;
import org.apache.commons.io.FileUtils;

public class UserAction{
//public User user;
private File uploadFile;
private String fileName;

public String add(){ 
try {
FileUtils.copyFile(uploadFile, new File("g:/Temp/"+fileName));
} catch (IOException e) {
e.printStackTrace();
}

System.out.println(fileName);
return "success";
}

public File getUploadFile() {
return uploadFile;
}
public void setUploadFile(File uploadFile) {
this.uploadFile = uploadFile;
}
public void setUploadFileFileName(String fName) {
fileName = fName;
}
public void setUploadFileContentType(String ct){
System.out.println(ct);
}

struts.xml:
<action name="test" class="xhy.shjc.UserAction">
       <!-- <interceptor-ref name="defaultStack"></interceptor-ref>  -->
            <result name="success">
                /success.jsp
            </result>
        </action>  

jsp:
<form action="test" method="post" enctype="multipart/formdata">
<input type="hidden" name="method:add">