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javaweb下载exe文件

javaweb下载exe文件(java 下载文件)

admin admin 发表于2023-03-12 16:07:10 浏览55 评论0

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本文目录一览:

java web怎么用软件打包成exe 安装文件

把JDK 、tomcat(把生成的WAR包放在webapp下)、数据库放在一个目录下

点击鼠标反键,选中“创建自解压格式”

点击“高级选项”卡,弹出页面有很多选项,点击“常规”,点击自解压项

在弹出页面上,写上解压路径,这是解压后默认安装路径,要仔细填写,因为后续的批处理都和此路径有关系

这一步也是最关键的一步,就是怎么设置JAVA的环境变量,通过批处理把几个安装程序联系在一起“解压后运行”把刚才写好的批处理的路径填写,这样就完成了一个基本的,java EXE程序!

JavaWeb下载文件,怎么获取文件下载完毕的状态?

在Javaweb中,上传下载是经常用到的功能,对于文件上传,浏览器在上传的过程中是以流的过程将文件传给服务器,一般都是使用commons-fileupload这个包实现上传功能,因为commons-fileupload依赖于commons-io这个包,所以需要下载这两个包commons-fileupload-1.2.1.jar和commons-io-1.3.2.jar。-javaweb下载exe文件

1、搭建环境

创建Web项目,将包导入到项目lib下

2、实现文件上传

(第一种上传的方法)

新建upload.jsp页面

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%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""htmlheadmeta http-equiv="Content-Type" content="text/html; charset=UTF-8"titleupload file/title/headbody  !--这里的%=request.getContextPath()%是表示项目的绝对路径,也就是说不管你以后将项目拷贝到哪个位置,它都会找到准确的路径 --  form action="%=request.getContextPath()%/uploadServlet" enctype="multipart/form-data" method="post"    span选择文件:/spaninput type="file" name="file1"    input type="submit" value="上传"  /form/body/html-javaweb下载exe文件

新建处理文件上传的Servlet

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package com.load; import java.io.File;import java.io.IOException;import java.util.List;import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;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.FileUploadException;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;@WebServlet("/uploadServlet")public class uploadServlet extends HttpServlet {  private static final long serialVersionUID = 1L;  public uploadServlet() {    super();  }  /* fileupload 包中, HTTP 请求中的复杂表单元素都被看做一个 FileItem 对象;   * FileItem 对象必须由 ServletFileUpload 类中的 parseRequest() 方法解析 HTTP 请求   * (即被包装之后的 HttpServletRequest 对象)出来,即分离出具体的文本表单和上传文件   * */  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    //通过isMultipartContent()方法:分析请求里面是不是有文件上的请求,    boolean isMultipart = ServletFileUpload.isMultipartContent(request);    if(isMultipart){      //创建可设置的磁盘节点工厂      DiskFileItemFactory factory = new DiskFileItemFactory();      //获取请求的上下文信息      ServletContext servletContext = request.getServletContext();      //缓存目录,每个服务器特定的目录      File repository = (File) servletContext.getAttribute("javax.servlet.context.tempdir");      //设置服务器的缓存目录      factory.setRepository(repository);      //ServletFileUpload 对象的创建需要依赖于 FileItemFactory      //工厂将获得的上传文件 FileItem 对象保存至服务器硬盘,即 DiskFileItem 对象。      ServletFileUpload upload = new ServletFileUpload(factory);      try {        //解析即被包装之后的 HttpServletRequest对象,既是分离文本表单和上传文件(http请求会被包装为HttpServletRequest)        ListFileItem items = upload.parseRequest(request);        for(FileItem item:items){          String fieldName = item.getFieldName();           String fileName = item.getName();          String contentType = item.getContentType();          boolean isInMemory = item.isInMemory();          long sizeInBytes = item.getSize();          //实例化一个文件          //request.getRealPath(获取真实路径)          File file = new File(request.getRealPath("/")+"/loads"+fileName.substring(fileName.lastIndexOf("\\")+1,fileName.length()));          item.write(file);        }      } catch (FileUploadException e) {        e.printStackTrace();      } catch (Exception e) {                 e.printStackTrace();      }    }  }   protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    doGet(request, response);  }}-javaweb下载exe文件

(第二种上传的方法)

新建Jsp页面(同上,只是路径改变下)

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%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""htmlheadmeta http-equiv="Content-Type" content="text/html; charset=UTF-8"titleupload file/title/headbody  !--这里的%=request.getContextPath()%是表示项目的绝对路径,也就是说不管你以后将项目拷贝到哪个位置,它都会找到准确的路径 --  form action="%=request.getContextPath()%/uploadservlet1" enctype="multipart/form-data" method="post"    span选择文件:/spaninput type="file" name="file1"    input type="submit" value="上传"  /form/body/html-javaweb下载exe文件

建立Servlet处理上传

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package com.load; import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import javax.servlet.ServletException;import javax.servlet.annotation.MultipartConfig;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.Part;@WebServlet("/uploadservlet1")@MultipartConfig(location="")public class uploadservlet1 extends HttpServlet {  private static final long serialVersionUID = 1L;  public uploadservlet1() {    super();  }   protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    response.setContentType("text/html;charset=UTF-8");    request.setCharacterEncoding("utf-8");         //取得上传文件,读取文件    Part part = request.getPart("file1");    //定义一个变量去接收文件名    String filename = null;    //Content-Disposition: 就是当用户想把请求所得的内容存为一个文件的时候提供一个默认的文件名    //Content-Disposition:告诉浏览器以下载的方式打开文件    for (String content : part.getHeader("content-disposition").split(";")) {      System.out.println(content);      //取得文件名      if (content.trim().startsWith("filename")) {        //截取文件名        filename = content.substring(            content.indexOf('=') + 1).trim().replace("\"", "");      }    }    //输出流     OutputStream out = null;     //输入流     InputStream filecontent = null;     //File.separator 取得系统的分割线等数据     out = new FileOutputStream(new File("e:/loads" + File.separator + filename));     int read;    //获得一个输入流    filecontent = part.getInputStream();    final byte[] bytes = new byte[1024];         while ((read = filecontent.read(bytes)) != -1) {      out.write(bytes, 0, read);    }    System.out.println("New file " + filename + " created at " + "/loads");  }   protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    // TODO Auto-generated method stub    doGet(request, response);  }}-javaweb下载exe文件

(第三种上传的方法)

这里使用的是jspSmartUpload包上传下载,笔者认为这种上传下载较为简单,但是好像不是很多人用,不懂。

创建HTML页面

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!DOCTYPE htmlhtmlheadmeta http-equiv="Content-Type" content="text/html; charset=UTF-8"title上传文件/title/headbody  p /p  p align="center"上传文件选择/p  form method="post" Action="../DouploadServlet" enctype="multipart/form-data"    table width="75%" border="1" align="center"      trtddiv align="center"        1.input type="file" name="file1"       /div/td/tr        trtddiv align="center"        2.input type="file" name="file2"       /div/td/tr        trtddiv align="center"        3.input type="file" name="file3"       /div/td/tr        trtddiv align="center"        input type="submit" name="Submit" value="上传他"      /div/td/tr    /table  /form/body/html-javaweb下载exe文件

创建Servlet处理上传文件

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package com.load; import java.io.IOException;import java.io.PrintWriter; import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.jsp.JspFactory;import javax.servlet.jsp.PageContext; import com.jspsmart.upload.File;import com.jspsmart.upload.SmartUpload;import com.jspsmart.upload.SmartUploadException;@WebServlet("/DouploadServlet")public class DouploadServlet extends HttpServlet {  private static final long serialVersionUID = 1L;       public DouploadServlet() {    super();  }   protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    response.setContentType("text/html;charset=UTF-8");    PrintWriter out = response.getWriter();    //新建一个智能上传对象    SmartUpload su = new SmartUpload();    /*     * PageContext pageContext;      HttpSession session;      ServletContext application;      ServletConfig config;      JspWriter out;      Object page = this;      HttpServletRequest request,      HttpServletResponse response      其中page对象,request和response已经完成了实例化,而其它5个没有实例化的对象通过下面的方式实例化      pageContext = jspxFactory.getPageContext(this, request, response,null, true, 8192, true);     */    //通过Jsp工厂类获取上下文环境    PageContext pagecontext = JspFactory.getDefaultFactory().getPageContext(this, request, response, null, true, 8192, true);    //上传初始化    su.initialize(pagecontext);     //上传文件    try {      su.upload();      //将上传文件保存到指定目录      int count = su.save("/share");      out.println(count+"个文件上传成功!br"+su.toString());    } catch (SmartUploadException e) {      e.printStackTrace();    }         //逐个提取上传文件信息    for(int i=0;isu.getFiles().getCount();i++){      File file = su.getFiles().getFile(i);      //如果文件不存在      if(file.isMissing()) continue;             //显示当前文件信息      out.println("table border=1");      out.println("trtd表单项名(FieldName)/td/td"+file.getFieldName()+"/td/tr");      out.println("trtd文件长度/tdtd"+file.getSize()+"/td/tr");      out.println("trtd文件名/tdtd"+file.getFileName()+"/td/tr");      out.println("trtd文件扩展名/tdtd"+file.getFileExt()+"/td/tr");      out.println("trtd文件全名/tdtd"+file.getFilePathName()+"/td/tr");      out.println("/tablebr");    }  }   /**   * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)   */  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    // TODO Auto-generated method stub    doGet(request, response);  } }-javaweb下载exe文件

注意:代码 int count = su.save("/share");表示你需要先建个文件夹,所以你可以先在Webcontent建立一个,然后将项目取消部署,再重新部署进去之后就会在运行那边建立起一个文件夹了!-javaweb下载exe文件

或者你可以直接找到运行的路径,然后建立share文件夹。

3、实现文件下载

(第一种文件下载)

注意:该代码是直接访问Servlet类的

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package com.load; import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream; import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;  //直接使用进行下载,但是这个有缺陷,如果下载文件名中有中文,就会变成乱码现象!@WebServlet("/download")public class download extends HttpServlet {  private static final long serialVersionUID = 1L;   public download() {    super();  }  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {     response.setContentType("text/plain;charset=utf-8");     response.setCharacterEncoding("utf-8");     response.setHeader("Location","中文.txt");     response.setHeader("Content-Disposition", "attachment; filename=" + "账号.txt");     OutputStream outputStream = response.getOutputStream();     InputStream inputStream = new FileInputStream("E:/loads"+"/账号.txt");     byte[] buffer = new byte[1024];     int i = -1;     while ((i = inputStream.read(buffer)) != -1) {     outputStream.write(buffer, 0, i);     }     outputStream.flush();     outputStream.close();  }  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    doGet(request, response);  } }-javaweb下载exe文件

(第二种下载方法)

新建jsp页面选择下载

%@ page language="java" contentType="text/html; charset=UTF-8"

  pageEncoding="UTF-8"%!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""htmlheadmeta http-equiv="Content-Type" content="text/html; charset=UTF-8"title下载/title/headbody  a href="../DoDownloadServlet?filename=呵呵.txt"点击下载/a/body/html-javaweb下载exe文件

创建Servlet类进行下载(注意:该下载如果文件名是中文的话,一样会出现乱码现象)

package com.load;

 import java.io.BufferedInputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.URLEncoder; import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.jsp.JspFactory;import javax.servlet.jsp.PageContext; import org.hsqldb.lib.StringUtil; import com.jspsmart.upload.SmartUpload;import com.jspsmart.upload.SmartUploadException; @WebServlet("/DoDownloadServlet")public class DoDownloadServlet extends HttpServlet {  private static final long serialVersionUID = 1L;   public DoDownloadServlet() {    super();  }   protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    //得到下载文件的名称    //String filename = request.getParameter("filename");    //String filename = new String(FileName.getBytes("iso8859-1"),"UTF-8");    //新建SmartUpload对象    SmartUpload su = new SmartUpload();    PageContext pagecontext = JspFactory.getDefaultFactory().getPageContext(this, request, response, null, true, 8192, true);    //上传初始化    su.initialize(pagecontext);    //设置禁止打开该文件    su.setContentDisposition(null);    //下载文件    try {      su.downloadFile("/listener/"+filename);    } catch (SmartUploadException e) {      // TODO Auto-generated catch block      e.printStackTrace();    }  }   protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    doGet(request, response);  }}-javaweb下载exe文件

(第三种下载的方法)

同上的jsp页面代码,这里就不再重复了。

新建Serlvet类,实现下载功能(注意:这里文件名就算是中文名,也不会出现乱码问题了!)

package com.load;

 import java.io.BufferedInputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.URLEncoder; import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.jsp.JspFactory;import javax.servlet.jsp.PageContext; import org.hsqldb.lib.StringUtil; import com.jspsmart.upload.SmartUpload;import com.jspsmart.upload.SmartUploadException; @WebServlet("/DoDownloadServlet")public class DoDownloadServlet extends HttpServlet {  private static final long serialVersionUID = 1L;   public DoDownloadServlet() {    super();  }    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    //获得文件名称    String path1 = request.getParameter("filename");    //获得路径名称    String path = request.getSession().getServletContext().getRealPath("/listener/"+path1);     // path是根据日志路径和文件名拼接出来的     File file = new File(path);     String filename = file.getName();    try {       //判断是否是IE11       Boolean flag= request.getHeader("User-Agent").indexOf("like Gecko")0;      //IE11 User-Agent字符串:Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko      //IE6~IE10版本的User-Agent字符串:Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.0; Trident/6.0)        if (request.getHeader("User-Agent").toLowerCase().indexOf("msie") 0||flag){          filename = URLEncoder.encode(filename, "UTF-8");//IE浏览器        }else {        //先去掉文件名称中的空格,然后转换编码格式为utf-8,保证不出现乱码,        //这个文件名称用于浏览器的下载框中自动显示的文件名        filename = new String(filename.replaceAll(" ", "").getBytes("UTF-8"), "ISO8859-1");        //firefox浏览器        //firefox浏览器User-Agent字符串:        //Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0        } InputStream fis = new BufferedInputStream(new FileInputStream(path));        byte[] buffer;        buffer = new byte[fis.available()];         fis.read(buffer);         fis.close();         response.reset();         response.addHeader("Content-Disposition", "attachment;filename=" +filename);         response.addHeader("Content-Length", "" + file.length());         OutputStream os = response.getOutputStream();         response.setContentType("application/octet-stream");         os.write(buffer);// 输出文件         os.flush();         os.close();       } catch (IOException e) {        e.printStackTrace();       }        System.out.println(filename);  }   protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    doGet(request, response);  }}-javaweb下载exe文件

想把java web项目做成exe文件 请问怎么做?项目的容器是tomcat.

如果是J2SE工程:先将project打包成jar,然后再找第三方工具把jar转化成exe。

如果是J2EE工程:先将web project打包成war文件,然后上传war文件到服务器web-apps目录下,tomcat服务器会自动解压缩war文件,配置成web应用的

具体的打包成war的命令:jar -cvf path\file_name.war webapp_name

Java web应用程序可以打包成.exe格式的可执行文件吗

有两种比较易用的方法:

关于两种将Java程序转化为.exe程序工具的使用及比较

一 商家mooth

1.出品

商家mooth,Sourceforge.net

2. 类型

free

3. 下载

4. 步骤

a)利用Eclipse将所需要的主类打成可独立运行的jar包,注意添加manifest属性和MainClass。

b)新建一个商家mooth工程

c) 在sketlon中选择“Console“ 或者 “Windowed“

d) 在Executable中的配置:

i. Executable Binary:填写目的输出源的名称。如test.exe.

ii. Executable Icon :选择一个好看点的图标

iii. Current Driectory :.(表示当前工程目录,当然也可行换成别的,As you wish.)

e) 在Application中的配置:

i. Classpath:选中我们所生成的jar包以及运行该jar文件所需要的类库

ii. Main-Class:选中我们所需要运行的主类。

iii. 可选项Use an embedded jar:运行该exe时可能需要到的类库(这里只能有一个类库)。

f) 在JVM Selection中的配置:

i. Minimum JVM Version:写一个需要运行该程序所需的最低的就JVM的版本,比如1.4

g) Compile:OK,编译成功后,在你的输出目录上就会有一个崭新的exe程序了。Just enjoy it.

二 exe4J

1. 出

Java web应用程序可以打包成.exe格式的可执行文件吗

貌假应该不可以。我还从没听说过,有谁能把JAVA

WEB

打包成EXE的。

WEB里面放的都是网页。

如果是JSP的文件还需要有服务器做支持。

不过你可以,做个JAVA应用程序。里面放WEB页面的连接。就是EXE的应用程序,里面嵌套WEB页面。即:JAVA

WebBrowser

Javaweb中的文件下载实现

需要在响应头部加上一些标示,告诉浏览器这个是文件下载。

如果你用了框架比如struts,需要加如下配置

result name="success" type="stream"

param name="contentType"application/octet-stream;charset=ISO8859-1/param

param name="inputName"fileStream/param

param name="contentDisposition"attachment;filename="${fileName}"/param

param name="bufferSize"2048/param

/result

如果没有用框架,就手动在返回对象添加这些contentType