java转换unicode，筛选文件中的insert语句并把日期给转换为可以直接在数据库执行的语句

package com;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;


public class supZhtool_1 {

    public static void main(String[] args) throws IOException {

        String path ="";//源文件路径，不包括文件名称
        String pathzh = "";//转换unicode编码后文件输出路径
        String pathinsert = "";//筛选出insert语句后的文件输出路径
        String pathSource = "";//源文件路径，包含文件名称的源文件路径
        
        JFileChooser fDialog = new JFileChooser();

        fDialog.setDialogTitle("请选择需要转换的文件");

        int returnVal = fDialog.showOpenDialog(null);//弹出文件选择框

        if(JFileChooser.APPROVE_OPTION == returnVal){
            pathSource = fDialog.getSelectedFile().toString();//获取文件路径并赋值给源文件路径
            
            //判断源文件路径是否正确
            if(!"script".equals(pathSource.substring(pathSource.length()-6,pathSource.length()))){
                JOptionPane.showMessageDialog(null, "请检查您选择的文件是否正确!");
                return;
            }
            
            String path_temp1[] = pathSource.split("\\");
            
            //组装文件地址，不包含文件名称的地址
            for (int i = 0; i < path_temp1.length-1; i++) {
                path = path + path_temp1[i]+"\\";
            }
            //定义转换unicode编码之后的文件名称和地址 
            pathzh = path +"blazezh.script";
            //定义insert语句文件的输入地址，和文件名称
            pathinsert =  path +"01_SR0001_BTDS2DATA_DML_BTDS.sql";
            
        }


        unicodeChange(pathSource,pathzh);

        pickInsertSql(pathzh,pathinsert);
        
        JOptionPane.showMessageDialog(null, "转换完毕!"); 

    }

    /**
     * 删除转换期间产生的的无用的文件
     */
    public static void deleFile(){
        String pathG =  System.getProperty("user.dir");
        File file = new File(pathG+"\blazezh.script");   
        if (file.isFile() && file.exists()) {   
            file.delete();   
        }   
    }

    /**
     * 
     * 挑选出Insert语句，并写入到文件中
     * 
     */
    public static void pickInsertSql(String pathzh,String pathinsert) throws IOException{

        
        File write = new File(pathinsert);
        
        File file = null;
        BufferedReader br = null;
        BufferedWriter bw = new BufferedWriter(new FileWriter(write));
        
        file = new File(pathzh);
        br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "gbk"));
        StringBuilder sb = new StringBuilder();
        String length = "";
        while ((length = br.readLine()) != null) {
            sb.append(length);

            String sql = sb.toString();
            sql = datestampChange(sql);
            sql = dateChange(sql);
            if("INSERT".equals(sql.substring(0,6))){
                String    release_info = sql.substring(0,24);
                if("INSERT INTO RELEASE_INFO".equals(release_info)){

                    String release_info_sub = sql.substring(0,sql.length()-1);
                    release_info_sub = release_info_sub +","+"'PingAnProject')";

                    String []temp1 =  release_info_sub.split(",");
                    for (int i = 0; i < temp1.length; i++) {
                        if(i==2){
                            temp1[2] = "'********'"; 
                        }
                    }

                    String insert = "";

                    for (int i = 0; i < temp1.length; i++) {

                        if(i<temp1.length-1){
                            insert = insert + temp1[i]+",";
                        }else{
                            insert = insert + temp1[i];
                        }
                    }
                    String []temp2 =  insert.split(",");
                    if(temp2.length<8){
                        bw.write("--"+insert.toString() +";"+ "
"); 
                    }else{
                        bw.write(insert.toString() +";"+ "
"); 
                    }
                }else{
                    bw.write(sql.toString() +";"+ "
"); 
                }
                bw.flush();
                sb = new StringBuilder();
            }
            sb = new StringBuilder();
        }

    }

    /**
     * 
     * 日期转换工具，类型是yyyy-mm-dd类型
     * 
     */
    
    public static String dateChange(String temp){

        String temp2="";
        String [] temp1 = temp.split(",");

        for (int i = 0; i < temp1.length; i++) {
            String dateFlag = temp1[i].toString();
            String[] datesub = dateFlag.split("-");
            if(datesub.length>2&&dateFlag.length()<13){
                dateFlag = dateFlag.substring(1,11);
                temp1[i] = "to_date('"+dateFlag+"','yyyy-mm-dd')";
            }
        }

        for (int i = 0; i < temp1.length; i++) {
            if(i<temp1.length-1){
                temp2 = temp2 + temp1[i]+",";
            }else{
                temp2 = temp2 + temp1[i];
            }
        }

        return temp2;
    }

    
    /**
     * 
     * 日期转换工具，类型是yyyy-mm-dd hh24:mi:ss.ff类型
     * 
     */
    public static String datestampChange(String temp){

        String temp2="";
        String [] temp1 = temp.split(",");

        for (int i = 0; i < temp1.length; i++) {
            String dateFlag = temp1[i].toString();
            if(dateFlag.length()>30){
                dateFlag = dateFlag.substring(1,30);
                if("000".equals(dateFlag.substring(dateFlag.length()-3, dateFlag.length()))){
                    String    user_favorite = temp.substring(0,25);
                    if("INSERT INTO USER_FAVORITE".equals(user_favorite)){
                        temp1[i] = "to_timestamp('"+dateFlag+"','yyyy-mm-dd hh24:mi:ss.ff'))";
                    }else{
                        temp1[i] = "to_timestamp('"+dateFlag+"','yyyy-mm-dd hh24:mi:ss.ff')";
                    }

                }
            }
        }

        for (int i = 0; i < temp1.length; i++) {
            if(i<temp1.length-1){
                temp2 = temp2 + temp1[i]+",";
            }else{
                temp2 = temp2 + temp1[i];
            }
        }
        return temp2;
    }


    public static void unicodeChange(String path,String pathzh) throws IOException{

        File write = new File(pathzh);

        File file = null;
        BufferedReader br = null;
        BufferedWriter bw = new BufferedWriter(new FileWriter(write));
        file = new File(path);
        br = new BufferedReader(new InputStreamReader(new FileInputStream(file), "gbk"));
        StringBuilder sb = new StringBuilder();
        String length = "";
        while ((length = br.readLine()) != null) {
            sb.append(length);
            bw.write(ascii2Native(sb.toString()) + "
"); 
            bw.flush();
            sb = new StringBuilder();
        }
    }

    public static String ascii2Native(String str) { 
        StringBuilder sb = new StringBuilder(); 
        int begin = 0; 
        int index = str.indexOf("\u"); 
        while (index != -1) { 
            sb.append(str.substring(begin, index)); 
            sb.append(ascii2Char(str.substring(index, index + 6))); 
            begin = index + 6; 
            index = str.indexOf("\u", begin); 
        } 
        sb.append(str.substring(begin)); 
        return sb.toString(); 
    } 

    private static char ascii2Char(String str) { 
        if (str.length() != 6) { 
            throw new IllegalArgumentException("长度不足6位"); 
        } 
        if (!"\u".equals(str.substring(0, 2))) { 
            throw new IllegalArgumentException("字符必须以 "\u"开头."); 
        } 
        String tmp = str.substring(2, 4); 
        int code = Integer.parseInt(tmp, 16) << 8; 
        tmp = str.substring(4, 6); 
        code += Integer.parseInt(tmp, 16); 
        return (char) code; 
    } 

}