Java 控制脚本的输出文件

继续提问

我需要帮助制作TableToCSV（将.html表格转换为csv的函数），将代码呈现到数据库，而不是.csv。我创建了一个BufferedReader，它将.csv转换为数据库，但我无法让2连接。请将TableToCSV的输出文件放入我的bufferedreader

表格SV

 * [TableToCSV.java]
 *
 * Summary: Extracts rows in CSV tables to CSV form. Extracts data from all tables in the input. Output in xxx.csv.
 *
 * Copyright: (c) 2011-2014 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.6+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 2011-01-23 initial version.
 *  1.1 2011-01-25 allow you to specify encoding
 */
package com.mindprod.csv;

import com.mindprod.common11.Misc;
import com.mindprod.entities.DeEntifyStrings;
import com.mindprod.hunkio.HunkIO;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.nio.charset.Charset;

import static java.lang.System.err;
import static java.lang.System.out;

/**
 * Extracts rows in CSV tables to CSV form. Extracts data from all tables in the input. Output in xxx.csv.
 * <p/>
 * Use: java.exe com.mindprod.TableToCSV xxxx.html
 * It also strips tags and converts entities back to UTF-8 characters.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.1 2011-01-25 allow you to specify encoding
 * @since 2011-01-23
 */
public final class TableToCSV

{
// ------------------------------ CONSTANTS ------------------------------

/**
 * how to use the command line
 */
private static final String USAGE = "TableToCSV needs the name of an HTML file on the commandline, " +
                                    "nothing else. Output will be in xxx.csv.";

// -------------------------- PUBLIC INSTANCE  METHODS --------------------------

/**
 * Constructor to convert an HTML table to CSV. Strips out entities and tags.
 *
 * @param file          CSV file to be packed to remove excess space and quotes.
 * @param separatorChar field separator character, usually ',' in North America,
 *                      ';' in Europe and sometimes '\t' for
 *                      tab for the output file.  It is tab for the input file.
 *                      Note this is a 'char' not a "string".
 * @param quoteChar     character used to quote fields containing awkward chars.
 * @param commentChar   character to treat as comments.
 * @param encoding      encoding of the input and output file.
 *
 * @throws java.io.IOException if problems reading/writing file
 */
@SuppressWarnings({ "WeakerAccess" })
public TableToCSV( final File file, final char separatorChar, final char quoteChar, final char commentChar,
                   final Charset encoding ) throws IOException
    {
    String outFilename = Misc.getCanOrAbsPath( file );
    outFilename = outFilename.substring( 0, outFilename.length() - 5 ) + ".csv";
    final File outFile = new File( outFilename );
    // writer, quoteLevel, separatorChar, quoteChar, commentChar, trim
    final PrintWriter pw = new PrintWriter( new OutputStreamWriter( new BufferedOutputStream( new FileOutputStream(
            outFile ), 32768 ), encoding ) );
    final CSVWriter w = new CSVWriter( pw, 0 /* minimal  */, separatorChar, quoteChar, commentChar, true );
    // read the entire html file into RAM.
    String big = HunkIO.readEntireFile( file, encoding );
    int from = 0;
    // our parser is forgiving, works even if </td> </tr> missing.
    while ( true )
        {
        // find <tr
        final int trStart = big.indexOf( "<tr", from );
        if ( trStart < 0 )
            {
            break;
            }
        from = trStart + 3;
        final int trEnd = big.indexOf( '>', from );
        if ( trEnd < 0 )
            {
            break;
            }
        while ( true )
            {
            // search for <td>...</td>
            final int tdStart = big.indexOf( "<td", from );
            if ( tdStart < 0 )
                {
                break;
                }
            from = tdStart + 3;
            final int tdEnd = big.indexOf( '>', from );
            if ( tdEnd < 0 )
                {
                break;
                }
            from = tdEnd + 1;
            final int startField = tdEnd + 1;
            final int slashTdStart = big.indexOf( "</td", from );
            final int lookaheadTd = big.indexOf( "<td", from );
            final int lookaheadSlashTr = big.indexOf( "</tr", from );
            final int lookaheadTr = big.indexOf( "<tr", from );
            int endField = Integer.MAX_VALUE;
            if ( slashTdStart >= 0 && slashTdStart < endField )
                {
                endField = slashTdStart;
                }
            if ( lookaheadTd >= 0 && lookaheadTd < endField )
                {
                endField = lookaheadTd;
                }
            if ( lookaheadSlashTr >= 0 && lookaheadSlashTr < endField )
                {
                endField = lookaheadSlashTr;
                }
            if ( lookaheadTr >= 0 && lookaheadTr < endField )
                {
                endField = lookaheadTr;
                }
            if ( endField == Integer.MAX_VALUE )
                {
                break;
                }
            from = endField + 3;
            final int slashTdEnd = big.indexOf( '>', from );
            if ( slashTdEnd < 0 )
                {
                break;
                }
            String field = big.substring( startField, endField );
            field = DeEntifyStrings.flattenHTML( field, ' ' );
            w.put( field );
            from = slashTdEnd + 1;
            final int lookTd = big.indexOf( "<td", from );
            final int lookTr = big.indexOf( "<tr", from );
            if ( lookTr >= 0 && lookTr < lookTd || lookTd < 0 )
                {
                break;
                }
            }
        w.nl();
        }
    out.println( w.getLineCount() + " rows extracted from table to csv" );
    w.close();
    }

// --------------------------- main() method ---------------------------

/**
 * Simple command line interface to TableToCSV. Converts one  HTML file to a CSV file, extracting tables,
 * with entities stripped.
 * Must have extension .html <br> Use java com.mindprod.TableToCSV somefile.html .  You can use TableToCSV
 * constructor
 * in your own programs.
 *
 * @param args name of csv file to remove excess quotes and space
 */
public static void main( String[] args )
    {
    if ( args.length != 1 )
        {
        throw new IllegalArgumentException( USAGE );
        }
    String filename = args[ 0 ];
    if ( !filename.endsWith( ".html" ) )
        {
        throw new IllegalArgumentException( "Bad Extension. Input must be a .html file.\n" + USAGE );
        }
    final File file = new File( filename );

    try
        {
        // file, separatorChar, quoteChar, commentChar, encoding
        new TableToCSV( file, ',', '\"', '#', CSV.UTF8Charset );
        }
    catch ( IOException e )
        {
        err.println();
        e.printStackTrace( err );
        err.println( "CSVToTable failed to export" + Misc.getCanOrAbsPath( file ) );
        err.println();
        }
    }// end main
}

---

你测试过你的数据库代码吗？它有用吗？（提示：您的sql语句是错误的）。是自动提交吗？如果不是，您不想关闭（）语句/连接吗

我将考虑代码，将sql语句移出循环，并将准备好的语句的创建移出循环：

String sql = "INSERT INTO MAIN(\"Ticket #\", \"Status\", \"Priority\", \"Department\", \"Account Name\") VALUES (?, ?, ?, ?, ?);
PreparedStatement pst = DatabaseConnection.ConnectDB().prepareStatement(sql);

然后在while循环中，您只需在执行之前设置对象的参数

pst.setString(1, value[0]);
pst.setString(2, value[1]); //...

最后，不要忘记关闭（）语句/连接

pst.close();
DatabaseConnection.ConnectDB().close(); ???

pst.close();
DatabaseConnection.ConnectDB().close(); ???