diff --git a/src/LoadFile/LoadFile.java b/src/LoadFile/LoadFile.java new file mode 100644 index 0000000..a4402fa --- /dev/null +++ b/src/LoadFile/LoadFile.java @@ -0,0 +1,39 @@ +package LoadFile; + +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.io.OutputStream; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +@SuppressWarnings("serial") +public class LoadFile extends HttpServlet{ + public void doGet(HttpServletRequest request,HttpServletResponse response) + throws IOException,ServletException{ + OutputStream o=response.getOutputStream(); + byte b[]=new byte[1024]; + //the file to download. + File fileLoad=new File("L:/resource","test.rar"); + //the dialogbox of download file. + response.setHeader("Content-disposition", + "attachment;filename="+"test.rar"); + //set the MIME type. + response.setContentType("application/x-tar"); + //get the file length. + long fileLength=fileLoad.length(); + String length=String.valueOf(fileLength); + response.setHeader("Content_Length",length); + //download the file. + FileInputStream in=new FileInputStream(fileLoad); + int n=0; + while((n=in.read(b))!=-1){ + o.write(b,0,n); + } + } + public void doPost(HttpServletRequest request,HttpServletResponse response) + throws IOException,ServletException{ + doGet(request,response); + } +} diff --git a/src/com/wgh/UserForm.class b/src/com/wgh/UserForm.class new file mode 100644 index 0000000..885d815 Binary files /dev/null and b/src/com/wgh/UserForm.class differ diff --git a/src/com/wgh/UserForm.java b/src/com/wgh/UserForm.java new file mode 100644 index 0000000..56dd888 --- /dev/null +++ b/src/com/wgh/UserForm.java @@ -0,0 +1,6 @@ +package com.wgh; + +public class UserForm +{ + public String username; +} diff --git a/src/login/getIP.java b/src/login/getIP.java new file mode 100644 index 0000000..be736c6 --- /dev/null +++ b/src/login/getIP.java @@ -0,0 +1,18 @@ +package login; +import javax.servlet.http.HttpServletRequest; + +public class getIP { + public String getIpAddr(HttpServletRequest request) { + String ip = request.getHeader("x-forwarded-for"); + if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { + ip = request.getHeader("Proxy-Client-IP"); + } + if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { + ip = request.getHeader("WL-Proxy-Client-IP"); + } + if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { + ip = request.getRemoteAddr(); + } + return ip; + } +} \ No newline at end of file diff --git a/src/login/login.java b/src/login/login.java new file mode 100644 index 0000000..5dc2a56 --- /dev/null +++ b/src/login/login.java @@ -0,0 +1,57 @@ +package login; + +/*public class login +{ + public boolean Login(String name) + { + if(name.equals("abc")) + { + return true; + } + else + { + return false; + } + } +} */ +import java.io.IOException; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +public class login extends HttpServlet { + + public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + + response.setCharacterEncoding("UTF=8"); + response.setContentType("text/html;charset=UTF-8"); + // 使用request对象的getSession()获取session,如果session不存在则创建一个 + HttpSession session = request.getSession(); + // 将数据存储到session中 + session.setAttribute("data", "孤傲苍狼"); + // 获取session的Id + String sessionId = session.getId(); + // 判断session是不是新创建的 + /* + * if (session.isNew()) { + * response.getWriter().print("session创建成功,session的id是:"+sessionId); + * }else { + * response.getWriter().print("服务器已经存在该session了,session的id是:"+sessionId) + * ; } + */ + } + + public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { + doGet(request, response); + } + + public boolean Login(String name) { + if (name.equals("abc")) { + return true; + } else { + return false; + } + } +} \ No newline at end of file diff --git a/src/upload_download/DownLoadServlet.java b/src/upload_download/DownLoadServlet.java new file mode 100644 index 0000000..47bd648 --- /dev/null +++ b/src/upload_download/DownLoadServlet.java @@ -0,0 +1,80 @@ +package upload_download; + +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.net.URLEncoder; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +public class DownLoadServlet extends HttpServlet { + + + public void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + //得到要下载的文件名 + String fileName = request.getParameter("filename"); //23239283-92489-阿凡达.avi + fileName = new String(fileName.getBytes("iso8859-1"),"UTF-8"); + //上传的文件都是保存在/WEB-INF/upload目录下的子目录当中 + String fileSaveRootPath=this.getServletContext().getRealPath("/WEB-INF/upload"); + //通过文件名找出文件的所在目录 + String path = findFileSavePathByFileName(fileName,fileSaveRootPath); + //得到要下载的文件 + File file = new File(path + "\\" + fileName); + //如果文件不存在 + if(!file.exists()){ + request.setAttribute("message", "您要下载的资源已被删除!!"); + request.getRequestDispatcher("/message.jsp").forward(request, response); + return; + } + //处理文件名 + String realname = fileName.substring(fileName.indexOf("_")+1); + //设置响应头,控制浏览器下载该文件 + response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode(realname, "UTF-8")); + //读取要下载的文件,保存到文件输入流 + FileInputStream in = new FileInputStream(path + "\\" + fileName); + //创建输出流 + OutputStream out = response.getOutputStream(); + //创建缓冲区 + byte buffer[] = new byte[1024]; + int len = 0; + //循环将输入流中的内容读取到缓冲区当中 + while((len=in.read(buffer))>0){ + //输出缓冲区的内容到浏览器,实现文件下载 + out.write(buffer, 0, len); + } + //关闭文件输入流 + in.close(); + //关闭输出流 + out.close(); + } + + /** + * @Method: findFileSavePathByFileName + * @Description: 通过文件名和存储上传文件根目录找出要下载的文件的所在路径 + * @Anthor:孤傲苍狼 + * @param filename 要下载的文件名 + * @param saveRootPath 上传文件保存的根目录,也就是/WEB-INF/upload目录 + * @return 要下载的文件的存储目录 + */ + public String findFileSavePathByFileName(String filename,String saveRootPath){ + int hashcode = filename.hashCode(); + int dir1 = hashcode&0xf; //0--15 + int dir2 = (hashcode&0xf0)>>4; //0-15 + String dir = saveRootPath + "\\" + dir1 + "\\" + dir2; //upload\2\3 upload\3\5 + File file = new File(dir); + if(!file.exists()){ + //创建目录 + file.mkdirs(); + } + return dir; + } + + public void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } +} \ No newline at end of file diff --git a/src/upload_download/ListFileServlet.java b/src/upload_download/ListFileServlet.java new file mode 100644 index 0000000..a20a337 --- /dev/null +++ b/src/upload_download/ListFileServlet.java @@ -0,0 +1,67 @@ +package upload_download; + +import java.io.File; +import java.io.IOException; +import java.util.HashMap; +import java.util.Map; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; + +/** +* @ClassName: ListFileServlet +* @Description: 列出Web系统中所有下载文件 +* @author: 孤傲苍狼 +* @date: 2015-1-4 下午9:54:40 +* +*/ +public class ListFileServlet extends HttpServlet { + + public void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + //获取上传文件的目录 + String uploadFilePath = this.getServletContext().getRealPath("/WEB-INF/upload"); + //存储要下载的文件名 + Map fileNameMap = new HashMap(); + //递归遍历filepath目录下的所有文件和目录,将文件的文件名存储到map集合中 + listfile(new File(uploadFilePath),fileNameMap);//File既可以代表一个文件也可以代表一个目录 + //将Map集合发送到listfile.jsp页面进行显示 + request.setAttribute("fileNameMap", fileNameMap); + request.getRequestDispatcher("/listfile.jsp").forward(request, response); + } + + /** + * @Method: listfile + * @Description: 递归遍历指定目录下的所有文件 + * @Anthor:孤傲苍狼 + * @param file 即代表一个文件,也代表一个文件目录 + * @param map 存储文件名的Map集合 + */ + public void listfile(File file,Map map){ + //如果file代表的不是一个文件,而是一个目录 + if(!file.isFile()){ + //列出该目录下的所有文件和目录 + File files[] = file.listFiles(); + //遍历files[]数组 + for(File f : files){ + //递归 + listfile(f,map); + } + }else{ + /** + * 处理文件名,上传后的文件是以uuid_文件名的形式去重新命名的,去除文件名的uuid_部分 + file.getName().indexOf("_")检索字符串中第一次出现"_"字符的位置,如果文件名类似于:9349249849-88343-8344_阿_凡_达.avi + 那么file.getName().substring(file.getName().indexOf("_")+1)处理之后就可以得到阿_凡_达.avi部分 + */ + String realName = file.getName().substring(file.getName().indexOf("_")+1); + //file.getName()得到的是文件的原始名称,这个名称是唯一的,因此可以作为key,realName是处理过后的名称,有可能会重复 + map.put(file.getName(), realName); + } + } + + public void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + doGet(request, response); + } +} \ No newline at end of file diff --git a/src/upload_download/UploadHandleServlet.java b/src/upload_download/UploadHandleServlet.java new file mode 100644 index 0000000..db77ff6 --- /dev/null +++ b/src/upload_download/UploadHandleServlet.java @@ -0,0 +1,189 @@ +package upload_download; + +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.List; +import java.util.UUID; + +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import org.apache.commons.fileupload.FileItem; +import org.apache.commons.fileupload.FileUploadBase; +import org.apache.commons.fileupload.ProgressListener; +import org.apache.commons.fileupload.disk.DiskFileItemFactory; +import org.apache.commons.fileupload.servlet.ServletFileUpload; + +/** +* @ClassName: UploadHandleServlet +* @Description: TODO(这里用一句话描述这个类的作用) +* @author: 孤傲苍狼 +* @date: 2015-1-3 下午11:35:50 +* +*/ +public class UploadHandleServlet extends HttpServlet { + + public void doGet(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + //得到上传文件的保存目录,将上传的文件存放于WEB-INF目录下,不允许外界直接访问,保证上传文件的安全 + String savePath = this.getServletContext().getRealPath("/WEB-INF/upload"); + //上传时生成的临时文件保存目录 + String tempPath = this.getServletContext().getRealPath("/WEB-INF/temp"); + File tmpFile = new File(tempPath); + if (!tmpFile.exists()) { + //创建临时目录 + tmpFile.mkdir(); + } + + //消息提示 + String message = ""; + try{ + //使用Apache文件上传组件处理文件上传步骤: + //1、创建一个DiskFileItemFactory工厂 + DiskFileItemFactory factory = new DiskFileItemFactory(); + //设置工厂的缓冲区的大小,当上传的文件大小超过缓冲区的大小时,就会生成一个临时文件存放到指定的临时目录当中。 + factory.setSizeThreshold(1024*100);//设置缓冲区的大小为100KB,如果不指定,那么缓冲区的大小默认是10KB + //设置上传时生成的临时文件的保存目录 + factory.setRepository(tmpFile); + //2、创建一个文件上传解析器 + ServletFileUpload upload = new ServletFileUpload(factory); + //监听文件上传进度 + upload.setProgressListener(new ProgressListener(){ + public void update(long pBytesRead, long pContentLength, int arg2) { + System.out.println("文件大小为:" + pContentLength + ",当前已处理:" + pBytesRead); + /** + * 文件大小为:14608,当前已处理:4096 + 文件大小为:14608,当前已处理:7367 + 文件大小为:14608,当前已处理:11419 + 文件大小为:14608,当前已处理:14608 + */ + } + }); + //解决上传文件名的中文乱码 + upload.setHeaderEncoding("UTF-8"); + //3、判断提交上来的数据是否是上传表单的数据 + if(!ServletFileUpload.isMultipartContent(request)){ + //按照传统方式获取数据 + return; + } + + //设置上传单个文件的大小的最大值,目前是设置为1024*1024字节,也就是1MB + upload.setFileSizeMax(1024*1024); + //设置上传文件总量的最大值,最大值=同时上传的多个文件的大小的最大值的和,目前设置为10MB + upload.setSizeMax(1024*1024*10); + //4、使用ServletFileUpload解析器解析上传数据,解析结果返回的是一个List集合,每一个FileItem对应一个Form表单的输入项 + List list = upload.parseRequest(request); + for(FileItem item : list){ + //如果fileitem中封装的是普通输入项的数据 + if(item.isFormField()){ + String name = item.getFieldName(); + //解决普通输入项的数据的中文乱码问题 + String value = item.getString("UTF-8"); + //value = new String(value.getBytes("iso8859-1"),"UTF-8"); + System.out.println(name + "=" + value); + }else{//如果fileitem中封装的是上传文件 + //得到上传的文件名称, + String filename = item.getName(); + System.out.println(filename); + if(filename==null || filename.trim().equals("")){ + continue; + } + //注意:不同的浏览器提交的文件名是不一样的,有些浏览器提交上来的文件名是带有路径的,如: c:\a\b\1.txt,而有些只是单纯的文件名,如:1.txt + //处理获取到的上传文件的文件名的路径部分,只保留文件名部分 + filename = filename.substring(filename.lastIndexOf("\\")+1); + //得到上传文件的扩展名 + String fileExtName = filename.substring(filename.lastIndexOf(".")+1); + //如果需要限制上传的文件类型,那么可以通过文件的扩展名来判断上传的文件类型是否合法 + System.out.println("上传的文件的扩展名是:"+fileExtName); + //获取item中的上传文件的输入流 + InputStream in = item.getInputStream(); + //得到文件保存的名称 + String saveFilename = makeFileName(filename); + //得到文件的保存目录 + String realSavePath = makePath(saveFilename, savePath); + //创建一个文件输出流 + FileOutputStream out = new FileOutputStream(realSavePath + "\\" + saveFilename); + //创建一个缓冲区 + byte buffer[] = new byte[1024]; + //判断输入流中的数据是否已经读完的标识 + int len = 0; + //循环将输入流读入到缓冲区当中,(len=in.read(buffer))>0就表示in里面还有数据 + while((len=in.read(buffer))>0){ + //使用FileOutputStream输出流将缓冲区的数据写入到指定的目录(savePath + "\\" + filename)当中 + out.write(buffer, 0, len); + } + //关闭输入流 + in.close(); + //关闭输出流 + out.close(); + //删除处理文件上传时生成的临时文件 + //item.delete(); + message = "文件上传成功!"; + } + } + }catch (FileUploadBase.FileSizeLimitExceededException e) { + e.printStackTrace(); + request.setAttribute("message", "单个文件超出最大值!!!"); + request.getRequestDispatcher("/message.jsp").forward(request, response); + return; + }catch (FileUploadBase.SizeLimitExceededException e) { + e.printStackTrace(); + request.setAttribute("message", "上传文件的总的大小超出限制的最大值!!!"); + request.getRequestDispatcher("/message.jsp").forward(request, response); + return; + }catch (Exception e) { + message= "文件上传失败!"; + e.printStackTrace(); + } + request.setAttribute("message",message); + request.getRequestDispatcher("/message.jsp").forward(request, response); + } + + /** + * @Method: makeFileName + * @Description: 生成上传文件的文件名,文件名以:uuid+"_"+文件的原始名称 + * @Anthor:孤傲苍狼 + * @param filename 文件的原始名称 + * @return uuid+"_"+文件的原始名称 + */ + private String makeFileName(String filename){ //2.jpg + //为防止文件覆盖的现象发生,要为上传文件产生一个唯一的文件名 + return UUID.randomUUID().toString() + "_" + filename; + } + + /** + * 为防止一个目录下面出现太多文件,要使用hash算法打散存储 + * @Method: makePath + * @Description: + * @Anthor:孤傲苍狼 + * + * @param filename 文件名,要根据文件名生成存储目录 + * @param savePath 文件存储路径 + * @return 新的存储目录 + */ + private String makePath(String filename,String savePath){ + //得到文件名的hashCode的值,得到的就是filename这个字符串对象在内存中的地址 + int hashcode = filename.hashCode(); + int dir1 = hashcode&0xf; //0--15 + int dir2 = (hashcode&0xf0)>>4; //0-15 + //构造新的保存目录 + String dir = savePath + "\\" + dir1 + "\\" + dir2; //upload\2\3 upload\3\5 + //File既可以代表文件也可以代表目录 + File file = new File(dir); + //如果目录不存在 + if(!file.exists()){ + //创建目录 + file.mkdirs(); + } + return dir; + } + + public void doPost(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + + doGet(request, response); + } +} \ No newline at end of file