Struts2文件上传配置教程Demo代码下载的代码详情-代码-最代码

首页>代码>Struts2文件上传配置教程Demo代码下载>/FileUpLoad/src/main/java/com/zuidaima/fileupload/controller/FileUploadAction.java
001package com.zuidaima.fileupload.controller;
002 
003import java.io.File;
004import java.io.FileInputStream;
005import java.io.FileOutputStream;
006import java.io.InputStream;
007import java.io.OutputStream;
008import org.apache.struts2.ServletActionContext;
009 
010import com.opensymphony.xwork2.ActionSupport;
011 
012/**
013 * 
014 * @author dyl
015 *
016 */
017public class FileUploadAction extends ActionSupport {
018 
019    private static final long serialVersionUID = 1L;
020 
021    private File fileUpload;
022    private String fileUploadContentType;
023    private String fileUploadFileName;
024    private String uploadDir;
025 
026    public String getFileUploadContentType() {
027        return fileUploadContentType;
028    }
029 
030    public void setFileUploadContentType(String fileUploadContentType) {
031        this.fileUploadContentType = fileUploadContentType;
032    }
033 
034    public String getFileUploadFileName() {
035        return fileUploadFileName;
036    }
037 
038    public void setFileUploadFileName(String fileUploadFileName) {
039        this.fileUploadFileName = fileUploadFileName;
040    }
041 
042    public File getFileUpload() {
043        return fileUpload;
044    }
045 
046    public void setFileUpload(File file) {
047        this.fileUpload = file;
048    }
049 
050    public String getUploadDir() {
051        return uploadDir;
052    }
053 
054    public void setUploadDir(String uploadDir) {
055        this.uploadDir = uploadDir;
056    }
057 
058    public String execute() throws Exception {
059        String newFileName = null;
060        long now = System.currentTimeMillis();
061        // 得到保存上传文件的目录的真实路径
062        File dir = new File(ServletActionContext.getServletContext()
063                .getRealPath(uploadDir));
064        // 如果该目录不存在，就创建
065        if (!dir.exists()) {
066            dir.mkdirs();
067        }
068 
069        // 为避免重名文件覆盖，判断上传文件是否有扩展名，以时间戳作为新的文件名
070        int index = fileUpload.getName().lastIndexOf(".");
071 
072        if (index != -1) {
073            newFileName = now + fileUpload.getName().substring(0,index);
074        } else {
075            newFileName = Long.toString(now);
076        }
077 
078        InputStream is = null;
079        OutputStream os = null;
080        try {
081            // 读取保存在临时目录下的上传文件，写入到新的文件中
082            is = new FileInputStream(fileUpload);
083            os = new FileOutputStream(new File(dir, newFileName));
084 
085            byte[] buf = new byte[1024];
086 
087            int len = -1;
088 
089            while ((len = is.read(buf)) != -1) {
090                os.write(buf, 0, len);
091            }
092            //删除临时文件
093            fileUpload.delete();
094        } finally {
095            is.close();
096            os.close();
097        }
098        return "SUCCESS";
099    }
100 
101    public String display() {
102        return "NONE";
103    }
104}