Java generate TXT file and download

Package Com.saicfc.pmpf.internal.manage.utils;import Java.io.file;import Java.io.filewriter;import Java.io.ioexception;import Java.util.iterator;import Java.util.linkedhashmap;import Java.util.List;import com.saicfc.pmpf.common.enums.channelcodeenums;/** * Generate TXT file * @author Lizhiyong * @version $Id: Txtutils.java, v 0.12014 years  September 11 Morning 8:40:02 EXP $ */public class Txtutils {@SuppressWarnings ("rawtypes") public static File Writetxtfile (String Channelcode, List ContentList, Linkedhashmap Map, String FilePath, String readstr, Str        ing FileName) throws IOException {        File File = new file (FilePath);            if (!file.exists ()) {File.mkdir ();        System.out.println ("folder created");        }//define file name format and create file txtfile = file.createtempfile (filename, ". txt", new file (FilePath));       Read the contents of the original file, and then write the operation FileWriter writer = null; if (Commonutils.isnotempty (map)) {//write header information String Filein = ""; for (Iterator tileiterator = Map.entryset (). Iterator (); Tileiterator.hasnext ();)                {Java.util.Map.Entry propertyentry = (java.util.Map.Entry) tileiterator.next (); Filein + = (String) propertyentry.getvalue () = = null?                "": (String) propertyentry. GetValue ();                if (Tileiterator.hasnext ()) {Filein = Filein + "";                }} try {writer = new FileWriter (txtfile, true);            Writer.write (Filein);            } catch (IOException E1) {e1.printstacktrace ();                    } finally {if (writer! = null) {try {writer.close ();                    } catch (IOException E2) {e2.printstacktrace ();      }                }            }        }  Write details int num = 1; for (Iterator Iterator = Contentlist.iterator (); Iterator.hasnext ();)            {Linkedhashmap Txtmap = (linkedhashmap) iterator.next ();            String filein1 = ""; for (Iterator propertyiterator = Txtmap.entryset (). Iterator (); propertyiterator. Hasnext ();)                {Java.util.Map.Entry propertyentry = (java.util.Map.Entry) propertyiterator.next (); Filein1 + = (String) propertyentry.getvalue () = = null?                "": (String) propertyentry. GetValue ();                if (Propertyiterator.hasnext ()) {filein1 = filein1 + readstr;                }} try {System.out.println ("Data filein1:" + filein1); Generate serial number for CCB if (ChannelCodeEnums.CCB.getChannelCode (). Equals (Channelcode)) {filein1 = Str                Ing.valueof (num) + filein1;   } writer = new FileWriter (txtfile, true);             Writer.write (filein1); Bank of China ends with a line break if (ChannelCodeEnums.BOC.getChannelCode (). Equals (Channelcode)) {WRITER.WR                ITE ("\ r \ n");                } else if (ChannelCodeEnums.CIB.getChannelCode (). Equals (Channelcode)) {writer.write ("\ r \ n");                    } else {if (num < contentlist.size ()) {writer.write ("\ r \ n");                } num++;            }} catch (IOException E1) {e1.printstacktrace ();                    } finally {if (writer! = null) {try {writer.close ();                    } catch (IOException E2) {e2.printstacktrace ();    }}}} return txtfile; }}

BigDecimal amountdecimal = new BigDecimal (0); for (Iterator Iterator = Exportdata.iterator (); Iterator.hasnext ();)                {Linkedhashmap Cebmap = (linkedhashmap) iterator.next ();                String amount = (string) cebmap.get ("Amount"); BigDecimal AmountDecimal2 = bigdecimal.valueof (double.parsedouble (amount)). Setscale (2, Bigdecimal.roun                D_HALF_UP);            Amountdecimal = Amountdecimal.add (AMOUNTDECIMAL2);            } int cebdatasize = Exportdata.size ();            Linkedhashmap Amounthashmap = new Linkedhashmap ();            Amounthashmap.put ("Amount", amountdecimal.toplainstring ());            Exportdata.add (0, Amounthashmap);            Linkedhashmap Sizehashmap = new Linkedhashmap ();            Sizehashmap.put ("TotalCount", String.valueof (cebdatasize));            Exportdata.add (1, Sizehashmap);            String readstr = ",";            String fileName = "Everbright Bank (CEB) refund data"; Create File FilE file = Txtutils.writetxtfile (Channelcode, ExportData, map, FilePath, Readstr, fileName); Download file DownLoadFile (response, FilePath, file);

    /** *     Download file     * @param response     * @param filePath  file path     * @param files   file     * @throws ioexception< c8/>*/public    void DownLoadFile (httpservletresponse response, String filePath, file file)                                                                                      throws IOException {        String fileName = File.getname ();        Download file        filemanageutils.exportfile (response, FilePath + filename, filename);        Delete a single file        filemanageutils.deletefile (FilePath, fileName);    }

Package Com.saicfc.pmpf.internal.manage.utils;import Java.io.file;import Java.io.fileinputstream;import Java.io.filenotfoundexception;import Java.io.ioexception;import Java.io.inputstream;import Java.io.OutputStream; Import javax.servlet.http.httpservletresponse;/** * File Management * @author Lizhiyong * @version $Id: Filemanageutils.java, v 0.120      September 11, 14 morning 9:37:47 EXP $ */public class Filemanageutils {/** * Download file * @param response * @param csvfilepath * File path * @param filename * file name * @throws IOException */public static V                                                                                                    OID Exportfile (httpservletresponse response, String Csvfilepath, String fileName) Throws IOException {Response.setcontenttype ("Applicatio        N/CSV;CHARSET=GBK ");  Response.setheader ("Content-disposition", "attachment;        Filename= "+ New String (Filename.getbytes (" GBK ")," iso8859-1 ")); UrlenCoder.encode (FileName, "GBK") inputstream in = null;            try {in = new FileInputStream (Csvfilepath);            int len = 0;            byte[] buffer = new byte[1024];            Response.setcharacterencoding ("GBK");            OutputStream out = Response.getoutputstream ();                 while (len = in.read (buffer)) > 0) {//out.write (new byte[] {(byte) 0xEF, (Byte) 0xBB, (byte) 0xBF});            Out.write (buffer, 0, Len);        }} catch (FileNotFoundException e) {System.out.println (e);                } finally {if (in! = null) {try {in.close ();                } catch (Exception e) {throw new RuntimeException (e); }}}}/** * Delete all files under this directory FilePath * @param filePath * File directory path */Publ        IC static void Deletefiles (String filePath) {File File = new file (FilePath); if (File.exists ()){file[] files = file.listfiles ();                for (int i = 0; i < files.length; i++) {if (Files[i].isfile ()) {files[i].delete (); }}}}/** * Delete individual files * @param filePath * file directory path * @param fi Lename * File name */public static void DeleteFile (String filePath, String fileName) {File File = N        EW File (FilePath);            if (file.exists ()) {file[] files = file.listfiles (); for (int i = 0; i < files.length; i++) {if (Files[i].isfile ()) {if (Files[i].getnam                        E (). Equals (FileName) {files[i].delete ();                    Return }                }            }        }    }}

Java generate TXT file and download