Struts 2之文件上传
n672
10年前
如果要获得上传文件的原始名称,需要定义一个String类型的属性,属性名必须为***FileName,其中***为File属性的名称;同理,如果要获取该文件的MIME类型,需要定义一个***ContentType的String属性
单个文件上传
public class UploadAction extends ActionSupport{ private File image; //上传的文件 private String imageFileName; //文件名称 private String imageContentType; //文件类型 public String execute() throws Exception { String realpath =ServletActionContext.getServletContext().getRealPath("/images"); FileOutputStream fos = null; FileInputStream fis = null; try { // 建立文件输出流 System.out.println(getSavePath()); fos = new FileOutputStream(realpath+ "\\" + getImageFileName()); // 建立文件上传流 fis = new FileInputStream(getImage()); byte[] buffer = new byte[1024]; int len = 0; while ((len = fis.read(buffer))> 0) { fos.write(buffer, 0, len); } } catch (Exception e) { System.out.println("文件上传失败"); e.printStackTrace(); } finally { close(fos, fis); } 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; } public String getImageContentType() { return imageContentType; } public void setImageContentType(String imageContentType) { this.imageContentType =imageContentType; } }
多个文件上传
import java.io.File; import java.io.IOException; import java.util.List; import org.apache.commons.io.FileUtils; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class TagUploadListAction extends ActionSupport { private static final long serialVersionUID= 1L; private String name; // 上传多个文件的集合文本 private List<File> upload; // /多个上传文件的类型集合 private List<String> uploadContextType; // 多个上传文件的文件名集合 private List<String> uploadFileName; public String getName() { return name; } public void setName(String name) { this.name = name; } public List<File> getUpload() { return upload; } public void setUpload(List<File> upload) { this.upload = upload; } public List<String> getUploadContextType() { return uploadContextType; } public void setUploadContextType(List<String> uploadContextType) { this.uploadContextType =uploadContextType; } public List<String> getUploadFileName() { return uploadFileName; } public void setUploadFileName(List<String> uploadFileName) { this.uploadFileName = uploadFileName; } public String execute() { // 把上传的文件放到指定的路径下 String path =ServletActionContext.getServletContext().getRealPath("/WEB-INF/uploadList"); // 写到指定的路径中 File file = new File(path); // 如果指定的路径没有就创建 if (!file.exists()) { file.mkdirs(); } // 把得到的文件的集合通过循环的方式读取并放在指定的路径下 for (int i = 0; i < upload.size();i++) { try { //list集合通过get(i)的方式来获取索引 FileUtils.copyFile(upload.get(i), new File(file,uploadFileName.get(i))); } catch (IOException e) { // TODO Auto-generated catchblock e.printStackTrace(); } } return SUCCESS; } }