package com.file;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;

public class ResolvFile {
	public static String readFileContent(String filepath) {
		//1.读取每一行记录，保存到List中
		ArrayList<String> records = new ArrayList<String>();
		try {
			BufferedReader br = new BufferedReader(new FileReader(filepath));
			
			String aRecord;
			while((aRecord = br.readLine())!=null){
				records.add(aRecord);//把读取到的每一行记录保存到List中
			}
			br.close();//用完以后关闭流
		} catch (Exception e) {
			e.printStackTrace();
		}
		//2.处理每一条记录成SQL语句或保存为对象（a.去掉字段前后的分号b.拼接成SQL或者保存为对象）
		ArrayList<String> recordList = new ArrayList<String>();//用于保存生成的SQL或对象
		for(int i = 0;i<records.size();i++) {
			String record = records.get(i);
			String[] recArray = minusQuotation(record.split(","));
			
			//拼接SQL语句或保存为对象
			String recordSql = getRecordSql(recArray);
			if (null!=recordSql) {
				recordList.add(recordSql);
			}
		}
		//3.批量执行SQL或保存对象
		batchExecuteSql(recordList);
		return null;
	}
	public static int batchExecuteSql(ArrayList<String> sqlList) {
		System.out.println("接下来可以执行SQL语句或保存对象");
		System.out.println("========批量执行SQL语句==========");
		System.out.println("将所有语句加入到Statment stat中");
		for (int i = 0;i<sqlList.size();i++) {
			String string = sqlList.get(i);
			System.out.println("通过stat.addBatch(sql)来加入语句"+i+": '"+string+"'");
		}
		System.out.println("通过stat.executeBatch()来执行所有的SQL语句");
		System.out.println("========批量执行SQL语句结束==========");
		//int count = stat.executeBatch();
		//return count;//返回执行的语句数量
		return sqlList.size();
	}
	//生成每条记录的SQL
	public static String getRecordSql(String[] recArray) {
		if (null==recArray) {
			return null;
		}
		String recordSql = "insert into tablename (sms,no,time) values('"+recArray[0]+"','"+recArray[2]+"','"+recArray[5]+"')";
		return recordSql;
	}
	/**
	 * 去掉数组中每一个元素的开头和结尾的引号
	 * @param recArray 要处理的数组
	 * @return 处理后的数组
	 */
	public static String[] minusQuotation(String[] recArray) {
		for (int i = 0; i < recArray.length; i++) {
			String str = recArray[i];
			if (null!=str) {
				if(str.indexOf( "\"")==0)
					str = str.substring(1,str.length());//去掉开头的分号
				if(str.lastIndexOf("\"")==(str.length()-1))
					str = str.substring(0,str.length()-1); //去掉最后的分号
			}
			recArray[i] = str;
		}
		return recArray;
	}
	public static void main(String[] args) {
		String filepath = "E:\\sxySMS\\smstest.txt";
		readFileContent(filepath);
	}
}