JAVA打包xml成zip保存在服务器任意位置，并能在页面进行点击下载

来源：互联网发布：mac编辑hosts文件编辑：程序博客网时间：2024/06/06 03:06

这几天做了个前台点击查询后，将后台查询的xml进行打包，形成zip（可存在服务器任意位置），并在前台页面可以点击下载进行下载：

打包代码：

public String savexml(List<Map> list) throws IOException{int i;Calendar c = Calendar.getInstance();    String year = c.get(Calendar.YEAR)+"";    String month = c.get(Calendar.MONTH)+1+"";     String date = c.get(Calendar.DATE)+"";     String hour = c.get(Calendar.HOUR_OF_DAY)+"";     String minute = c.get(Calendar.MINUTE)+"";     String second = c.get(Calendar.SECOND)+"";    String data = year+month+date+hour+minute+second;    //首先生成一个文件夹，存放此次查询获得的xml;    String path = this.getClass().getResource("/").getPath();    System.err.println(path);        File file = new File("F:\\xml\\"+data+"");    file.mkdirs();String filename = null;String xmlcontent = null;//将查询获得的xml依次存放入此文件夹中;Map map = new HashMap();for(i=0;i<list.size();i++){map = list.get(i);//System.err.println(map);if(map.get("FILENAME")!=null){filename=map.get("FILENAME").toString();}if(map.get("XMLCONTENT")!=null){xmlcontent=map.get("XMLCONTENT").toString();}FileWriter fw = new FileWriter("F:\\xml\\"+data+"\\"+filename+"");//System.out.println("~~~~~~~"+xmlcontent);fw.write(xmlcontent);fw.flush();fw.close();} String sourceFilePath = "F:\\xml\\"+data+"";          String zipFilePath = "F:\\xml\\"+data+"";          String fileName = data;boolean flag = fileToZip(sourceFilePath, zipFilePath, fileName);          if(flag){              System.out.println("文件打包成功!");          }else{              System.out.println("文件打包失败!");          }        return zipFilePath+"\\"+fileName;}/**      * 将存放在sourceFilePath目录下的源文件，打包成fileName名称的zip文件，并存放到zipFilePath路径下      * @param sourceFilePath :待压缩的文件路径      * @param zipFilePath :压缩后存放路径      * @param fileName :压缩后文件的名称      * @return      */      public static boolean fileToZip(String sourceFilePath,String zipFilePath,String fileName){          boolean flag = false;          File sourceFile = new File(sourceFilePath);          FileInputStream fis = null;          BufferedInputStream bis = null;          FileOutputStream fos = null;          ZipOutputStream zos = null;                    if(sourceFile.exists() == false){              System.out.println("待压缩的文件目录："+sourceFilePath+"不存在.");          }else{              try {                  File zipFile = new File(zipFilePath + "/" + fileName +".zip");                  if(zipFile.exists()){                      System.out.println(zipFilePath + "目录下存在名字为:" + fileName +".zip" +"打包文件.");                  }else{                      File[] sourceFiles = sourceFile.listFiles();                      if(null == sourceFiles || sourceFiles.length<1){                          System.out.println("待压缩的文件目录：" + sourceFilePath + "里面不存在文件，无需压缩.");                      }else{                          fos = new FileOutputStream(zipFile);                          zos = new ZipOutputStream(new BufferedOutputStream(fos));                          byte[] bufs = new byte[1024*10];                          for(int i=0;i<sourceFiles.length;i++){                              //创建ZIP实体，并添加进压缩包                              ZipEntry zipEntry = new ZipEntry(sourceFiles[i].getName());                              zos.putNextEntry(zipEntry);                              //读取待压缩的文件并写进压缩包里                              fis = new FileInputStream(sourceFiles[i]);                              bis = new BufferedInputStream(fis, 1024*10);                              int read = 0;                              while((read=bis.read(bufs, 0, 1024*10)) != -1){                                  zos.write(bufs,0,read);                              }                          }                          flag = true;                      }                  }              } catch (FileNotFoundException e) {                  e.printStackTrace();                  throw new RuntimeException(e);              } catch (IOException e) {                  e.printStackTrace();                  throw new RuntimeException(e);              } finally{                  //关闭流                  try {                      if(null != bis) bis.close();                      if(null != zos) zos.close();                  } catch (IOException e) {                      e.printStackTrace();                      throw new RuntimeException(e);                  }              }          }          return flag;      }

下载代码：controller：

@RequestMapping(value = "/upload", method = RequestMethod.GET)public void exportZip(HttpServletRequest request, HttpServletResponse response) {String path = request.getQueryString();path = path.substring(5);path = path.replaceAll(";", "\\\\");    File file = new File(path);// path是根据日志路径和文件名拼接出来的    String filename = file.getName();// 获取日志文件名称    response.setCharacterEncoding("utf-8");    response.setContentType("multipart/form-data");    response.setHeader("Content-Disposition", "attachment;fileName=" + filename);    try {        //打开本地文件流        InputStream inputStream = new FileInputStream(path);        //激活下载操作        OutputStream os = response.getOutputStream();        //循环写入输出流        byte[] b = new byte[2048];        int length;        while ((length = inputStream.read(b)) > 0) {            os.write(b, 0, length);        }        // 这里主要关闭。        os.close();        inputStream.close();    } catch (Exception e){    e.printStackTrace();    }}

前台页面JS：

function query(){var areacode=$('#areacode').textbox('getValue');var rectype=$('#rectype').textbox('getValue');var filename=$('#filename').textbox('getValue');var bdcdyh=$('#bdcdyh').textbox('getValue');var kjjd=$("#kjjd").is(":checked");var page = $("#mylist").datagrid("options").pageNumber;var rows = $("#mylist").datagrid("options").pageSize;var status = $("#status option:selected").attr("value");para = { page : page, rows : rows, areacode : areacode, rectype : rectype, filename : filename, bdcdyh : bdcdyh, kjjd : kjjd , status : status};$("#mylist").datagrid({url : "../common/loglist/",method : 'get',queryParams : para,rownumbers : true,fitColumns : true,pagination : true,pageSize:100, height:screen.availHeight-155,pageList : [ 100, 150, 200, 400, 500 ],onLoadSuccess:function(data){data.urls = data.urls+".zip";var path = data.urls.replace(/\\/g,';');$("#export").attr("href","../common/upload?path="+path)}});}

有几点需要注意：

①我是将文件位置传给了后台，但是文件名是：F:/XXX/XX.zip；但是浏览器会将/字符当成转义字符，在这里卡住了好久才明白哪里错了。于是我在前台将 / 替换成了；然后再传给后台；

②后台一定要写response属性啊：

response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");
response.setHeader("Content-Disposition", "attachment;fileName=" + filename);

这三句话如果不加上，浏览器会出现自行编译，可能会出现前台response错误；

③下载的时候，直接a标签链接服务器接口地址！

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