2019独角兽企业重金招聘Python工程师标准>>> 
工具代码简介
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.ss.usermodel.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
public class ExcelToSql {
private static final Logger logger = LoggerFactory.getLogger(ExcelToSql.class);
private static HashMap DEFAULT_COLUMN_MAP;
private static HashMap CHINESS_COLUMN_MAP;
public static final String CREATE_TABLE_PROMPT = "CREATE TABLE ";
/**
* 字段名称
*/
public static final String CNAME = "CNAME";
/**
* 字段描述 注释
*/
public static final String COMMENT = "COMMENT";
/**
* 字段类型
*/
public static final String CTYPE = "CTYPE";
/**
* 非空
*/
public static final String NOTNULL = "NOTNULL";
/**
* 默认值
*/
public static final String DEFAULT = "DEFAULT";
/**
* 索引值
*/
public static final String INDEX = "INDEX";
static {
DEFAULT_COLUMN_MAP = new HashMap(6);
DEFAULT_COLUMN_MAP.put(CNAME,0);
DEFAULT_COLUMN_MAP.put(COMMENT,1);
DEFAULT_COLUMN_MAP.put(CTYPE,2);
DEFAULT_COLUMN_MAP.put(NOTNULL,3);
DEFAULT_COLUMN_MAP.put(DEFAULT,4);
DEFAULT_COLUMN_MAP.put(INDEX,5);
CHINESS_COLUMN_MAP = new HashMap(6);
CHINESS_COLUMN_MAP.put("字段名称",CNAME);
CHINESS_COLUMN_MAP.put("字段描述",COMMENT);
CHINESS_COLUMN_MAP.put("字段类型",CTYPE);
CHINESS_COLUMN_MAP.put("不为空",NOTNULL);
CHINESS_COLUMN_MAP.put("缺省值",DEFAULT);
CHINESS_COLUMN_MAP.put("索引类型",INDEX);
}
public static void main(String [] args){
final InputStream is = ExcelToSql.class.getResourceAsStream("/db.xlsx");
Workbook wb = null;
try {
wb = WorkbookFactory.create(is);
} catch (IOException e) {
e.printStackTrace();
} catch (InvalidFormatException e) {
e.printStackTrace();
}
// System.out.println(wb.getNumberOfSheets());//表单sheet数量
final Sheet sheet = wb.getSheetAt(0);
excelToSql(sheet);
}
private static String excelToSql(Sheet sheet){
final String sheetName = sheet.getSheetName();
return excelToSql(sheet,sheetName);
}
private static String excelToSql(Sheet sheet,String tableName){
final int nums = sheet.getLastRowNum();
final String sheetName = sheet.getSheetName();
if(nums < 1){
logger.info(sheetName + "为空");
throw new RuntimeException("表单为空");
}
final StringBuffer sb = new StringBuffer(CREATE_TABLE_PROMPT);
final StringBuffer index = new StringBuffer();
sb.append(tableName);
sb.append("(");
final Map columnMap = getColumnMap(sheet);
for(int i=1;i getColumnMap(Sheet sheet){
final int nums = sheet.getLastRowNum();
final String sheetName = sheet.getSheetName();
if(nums <= 1){
logger.info(sheetName + "为空");
return DEFAULT_COLUMN_MAP;
}
final Row row = sheet.getRow(0);
final int cellNums = row.getPhysicalNumberOfCells();
assert cellNums == 6;
final HashMap result = new HashMap();
for(int i = 0;i 工具只处理了6个部分:字段名称,字段描述,字段类型,不为空,缺省值,索引类型
其中字段描述就是注释，不为空标志字段是否可以为空可以只处理了"YES"或"Y",缺省值就是默认值，索引类型是字段索引。自处理了"自增主键，普通索引，唯一索引"
大概的Excel如下图所示：
当然其中的字段位置和字段名称是可以替换的，CHINESS_COLUMN_MAP和getColumnMap就是为了处理这个事情，但是必须作为第一行。当然也可根据自己的需求修改一下代码。
注意：为了兼容2003及以前使用的是WorkbookFactory.create注意看下面的maven依赖
maven依赖
org.apache.commons
commons-lang3
3.1
mysql
mysql-connector-java
5.1.35
jar
compile
org.apache.poi
poi
3.9
org.apache.poi
poi-ooxml-schemas
3.9
org.apache.poi
poi-ooxml
3.9