使用WebUploader实现分片断点上传文件功能（二）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
  String scheme = request.getScheme();
  String serverName = request.getServerName();
  String contextPath = request.getContextPath();
  int port = request.getServerPort();

  //网站的访问跟路径
  String baseURL = scheme + "://" + serverName + ":" + port
      + contextPath;
  request.setAttribute("baseURL", baseURL);
%>


  
  <%--引入css样式--%>
  
  
  <%--引入文件上传插件--%>
  

  




  

    

    
选择文件
    开始上传
    取消上传
  

/**
 * Description:com.ims.action
 * Author: Eleven
 * Date: 2017/12/26 10:50
 */
@Controller("FileAction")
public class FileAction {

  /*用于接收分割请求的每个小文件的相关参数*/
  //记得提供对应的get set方法
  //上传文件对象(和表单type=file的name值一致)
  private File upload;
  //文件名
  private String uploadFileName;
  //上传类型
  private String uploadContentType;

  /**
   * 以下变量都是public，参数太多，不想设为private再去写get,set方法了，
   * 就偷个懒直接用了public了
   */
  //文件分片序号
  public String chunk;

  public String guid;//合并与分割都有用到

  //用于接收发送合并请求的相关参数
  public String fileName; //文件名
  public String chunks; //分割数量


　　//当进行分片上传文件的时候，每上传一个小文件就会调用这个方法，这个就跟普通的保存文件没啥区别的
  public void uploadFile2() throws Exception{
    String str = "D:/upload44/divide/"; //文件保存路径
    //保存每个小文件的路径
    String realPath = str + guid +"/" + chunk;
    File tmp =new File(realPath);
    FileUtils.copyFile(upload, tmp);
    System.out.println("上传文件"+uploadFileName+",第几块："+chunk+",大小："+(upload.length()/1024/1024)+"M");

  }


　　//文件合并
  public void mergeFile() throws Exception{

    String path = "D:/upload44/merge/" ;
    //创建 合并文件夹
    new File(path).mkdir();

    //创建 合并后的文件
    File newFile = new File(path + fileName);
    if(!newFile.exists()){
      newFile.createNewFile();
    }

    FileOutputStream outputStream = new FileOutputStream(newFile, true);//文件追加写入

    byte[] byt = new byte[10 * 1024 * 1024];
    int len;
    FileInputStream temp = null;//分片文件
    for (int i = 0; i < Integer.parseInt(chunks); i++) {
      //"D:/upload44/divide/" + guid + "/" + i 为保存分割后的小文件的路径
      temp = new FileInputStream(new File("D:/upload44/divide/" + guid + "/" + i));
      while ((len = temp.read(byt)) != -1) {
        System.out.println(len);
        outputStream.write(byt, 0, len);

      }
      temp.close();
    }

     //当所有追加写入都写完 才可以关闭流
    outputStream.close();

    //删除分片文件
    String path3 = "D:/upload44/divide/" + guid;
    FileUtils.deleteDirectory(new File(path3));//删除目录下所有的内容

    System.out.println("success!guid=" + guid + ";chunks=" + chunks + ";fileName=" + fileName);

  }  

  public File getUpload() {
    return upload;
  }

  public void setUpload(File upload) {
    this.upload = upload;
  }

  public String getUploadFileName() {
    return uploadFileName;
  }

  public void setUploadFileName(String uploadFileName) {
    this.uploadFileName = uploadFileName;
  }

  public String getUploadContentType() {
    return uploadContentType;
  }

  public void setUploadContentType(String uploadContentType) {
    this.uploadContentType = uploadContentType;
  }
}