小编Kev*_*ras的帖子

我在这里有一个简单的问题我正在制作一个简单的jsf网络应用程序,可以上传文件但我不断得到

Target Unreachable, identifier 'upload' resolved to null

这是我的上传课程

package SimpleLogin;

import java.io.IOException;

import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.context.FacesContext;

import org.apache.commons.io.FilenameUtils;
import org.apache.myfaces.custom.fileupload.UploadedFile;

@ManagedBean
@RequestScoped
public class upload {

private UploadedFile uploadedFile;

public void submit() throws IOException {
    String fileName = FilenameUtils.getName(uploadedFile.getName());
    String contentType = uploadedFile.getContentType();
    byte[] bytes = uploadedFile.getBytes();

    FacesContext.getCurrentInstance().addMessage(null, 
        new FacesMessage(String.format("File '%s' of type '%s' successfully uploaded!", fileName, contentType)));
}

public UploadedFile getUploadedFile() {
    return uploadedFile;
}

public void setUploadedFile(UploadedFile uploadedFile) {
    this.uploadedFile = uploadedFile;
} …