《程序实现》从xml、txt文件里读取数据写入excel表格

直接上码

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import java.util.regex.*;

import javax.swing.JFileChooser;

public class main {

    /**
     * @param args
     */
    public static void main(String[] args) {
        int a=;
        int b=;
        int countTemp=;
        int row=;
        String temp=null;
        try {
            WritableWorkbook wwb = null;
                //首先要使用Workbook类的工厂方法创建一个可写入的工作薄(Workbook)对象
            wwb = Workbook.createWorkbook(new File("C:/Users/Administrator/Desktop/result.xls"));
            WritableSheet ws = wwb.createSheet("Sheet 1", );
            String th[] = { "弹幕ID", "用户ID", "弹幕发送时间", "字体颜色", "字号", "弹幕类型", "弹幕字数" };
            WritableFont contentFont = new WritableFont(WritableFont.createFont("楷体 _GB2312"), , WritableFont.NO_BOLD);
            WritableCellFormat contentFormat = new WritableCellFormat(contentFont);
            for (int i = ; i < ; i++) {
                ws.addCell(new Label(i, , th[i], contentFormat));
            }

            JFileChooser jfc1=new JFileChooser("d:/");
            jfc1.showOpenDialog(null);
            File sf1=jfc1.getSelectedFile();
            String readFile=sf1.getAbsolutePath();
            //String readFile="C:/Users/Administrator/Desktop/first.xml";
            BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(readFile)));
            while((temp=br.readLine())!=null){
                a=;
                b=;
                countTemp=;
                String temp1=null;
                String[] th1=new String[];
                //System.out.println(temp);
                String regEx = "\\<d.*\\<\\/d\\>";
                Pattern pat = Pattern.compile(regEx);
                Matcher mat = pat.matcher(temp);
                if(mat.find()){
                    temp1=mat.group();
                    //System.out.println(temp1);
                }else{
                    continue;
                }
                //计算用户ID
                for(int i=;i<temp1.length();i++){
                    if(temp1.charAt(i)==','){
                        countTemp++;
                    }
                    if(countTemp== && a==){
                        a=i;
                    }
                    if(countTemp==){
                        b=i;
                        break;
                    }
                }
                //System.out.println(a);
                //System.out.println(b);
                th1[]=temp1.substring(a+, b);
                //计算弹幕发送时间
                for(int i=;i<temp1.length();i++){
                    if(temp1.charAt(i)=='"'){
                        a=i;
                    }
                    if(temp1.charAt(i)==','){
                        b=i;
                        break;
                    }
                }
                th1[]=temp1.substring(a+, b);
                //计算字体颜色
                a=;
                b=;
                countTemp=;
                for(int i=;i<temp1.length();i++){
                    if(temp1.charAt(i)==','){
                        countTemp++;
                    }
                    if(countTemp== && a==){
                        a=i;
                    }
                    if(countTemp==){
                        b=i;
                        break;
                    }
                }
                th1[]=temp1.substring(a+, b);
                //计算字号
                a=;
                b=;
                countTemp=;
                for(int i=;i<temp1.length();i++){
                    if(temp1.charAt(i)==','){
                        countTemp++;
                    }
                    if(countTemp== && a==){
                        a=i;
                    }
                    if(countTemp==){
                        b=i;
                        break;
                    }
                }
                if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="非常小";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="特小";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="小";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="中";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="大";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="很大";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="特别大";
                }
                //计算弹幕类型
                a=;
                b=;
                countTemp=;
                for(int i=;i<temp1.length();i++){
                    if(temp1.charAt(i)==','){
                        countTemp++;
                    }
                    if(countTemp== && a==){
                        a=i;
                    }
                    if(countTemp==){
                        b=i;
                        break;
                    }
                }
                if(Integer.parseInt(temp1.substring(a+, b))==||Integer.parseInt(temp1.substring(a+, b))==||Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="滚动弹幕";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="底端弹幕";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="顶端弹幕";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="逆向弹幕";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="精准定位";
                }else if(Integer.parseInt(temp1.substring(a+, b))==){
                    th1[]="高级弹幕";
                }
                //计算弹幕字数
                for(int i=;i<temp1.length();i++){
                    if(temp1.charAt(i)=='>'){
                        a=i;
                    }
                    if(temp1.charAt(i)=='<'){
                        b=i;
                        break;
                    }
                }
                //System.out.println(a);
                //System.out.println(b);
                th1[]=String.valueOf((b-a)/+);//字数存在问题

                ws.addCell(new Label(, row, new Integer(row).toString(), contentFormat));
                 for (int i = ; i < ; i++) {
                     ws.addCell(new Label(i+, row, th1[i], contentFormat));
                 }
                row++;
            }
            wwb.write();
            wwb.close();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

使用javax.swing.JFileChooser出现访问限制错误，

Access restriction: The type JFileChooser is not accessible due to restriction on required library

解决办法：Project->Properties->Java Compiler->Errors/Warnings->Deprecated and restricted API->Forbidden reference改为warning，这样便可以用了。

程序的功能就是选择文件进行读取数据，将有效数据写入excel里，省去了要花费大量时间的人工输入。