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How does navicat process data in batches?

爱喝马黛茶的安东尼
爱喝马黛茶的安东尼Original
2019-08-17 15:31:196434browse

How does navicat process data in batches?

一、使用excel表格

1.打开数据表,按照表的字段在excel中添加数据。注意:表中字段名必须和excel中的名称一致。 

How does navicat process data in batches?

2.打开navicat,在表结构处右键选择“导入向导”,选择excel文件,找到excel文件所在的位置。注意:一个excel表格里可以有多个sheet,所以如果全选中的话,可以一次性分别导入多个数据表,但是一定要保证字段名不要错,否则导入的时候会显示错误。 

How does navicat process data in batches?

How does navicat process data in batches?

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3.选择下一步,到设置附加选项时,“栏位名称”是excel中字段的那一行,“第一个数据行”是数据开始的那一行。 

How does navicat process data in batches?

4.下一步,选择“开始”,执行之后,选择“关闭”。 

How does navicat process data in batches?

5.在数据表中刷新,发现数据就都导进来了。 

How does navicat process data in batches?

二、使用insert语句(FileWriter批量写入)

定义一个写语句到文件的方法,在for循环里面定义自己需要的格式。在这里笔者想让时间变化,于是写了一个让时间减一的方法,其实在这张表里时间无所谓,但是在文章开头笔者有提到,当需要添加一年的数据时,或者某一段时间的每一天都要添加时,就有必要定义这个方法了。

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.sql.Date;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class UserTest {
    public static void main(String[] args) {
        try {
            writeToFile();
            //readFromFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    /**
     * DOC 往文件里写入数据.
     * 
     * @throws IOException
     */
    private static void writeToFile() throws IOException {
        String writerContent = "";// 要写入的文本
        File file = new File("F:\\user.txt");// 要写入的文本文件
        if (!file.exists()) {// 如果文件不存在,则创建该文件
            file.createNewFile();
        }
        FileWriter writer = new FileWriter(file);// 获取该文件的输出流
        for (int i = 0 ;i < 10; i ++ ) {
            writerContent = "insert into `user` VALUES ("+"'"+(i + 1)+"'," +"yystrong"+i+"',"+"'111',"
                    +"'"+calcTime("", -(i+1))+"'"+"'0',"+"'0',"+"'"+calcTime("", -(i+1))+"'"
                    + "\r\n";
            writer.write(writerContent);// 写内容
        }
        writer.flush();// 清空缓冲区,立即将输出流里的内容写到文件里
        writer.close();// 关闭输出流,施放资源
    }
    /**
     * 
     * @param type 往前计算的类型(week、month、year,“”表示day
     * @param count 往前计算的数量
     * @return
     */
    private static String calcTime(String type ,int count){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Calendar calendar = Calendar.getInstance();
        if (type .equals("week")) {
            //周
            calendar.add(Calendar.WEEK_OF_YEAR, count);
        }else if (type .equals("month")) {
            //月
            calendar.add(Calendar.MONTH, count);
        }else if (type .equals("year")) {
            //12个月
            calendar.add(Calendar.MONTH, count);
        }else {
            //日
            calendar.add(Calendar.DATE, count);
        }
        java.util.Date date = calendar.getTime();
        return sdf.format(date);
    }
}

执行之后,在f盘的根目录下就会创建一个user.txt的文件夹,里面有insert语句,然后在navicat里面选择ctrl+q打开执行框,复制进去之后选择运行,同样可以导入数据。 

How does navicat process data in batches?

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