java实现在数据库中建表（mysql数据库）

public class ColumnVo {
    private String columnName;//字段名称
    private String columnType;//字段类型  "整数","小数","字符串","时间"
    private Integer columnSize;//字段大小
    private Boolean isNullable;//是否可为空
    private Boolean isPrimary;//是否主键
    private String remarks;//字段注释
}

public void addCustomTable(Connection connection, String tableName, 
String tableRemarks, List<ColumnVo> columnVos) throws Exception {
        if (tableName != null && tableRemarks != null && !CollectionUtils.isEmpty(columnVos)) {
            //判断表名是否重复
            ResultSet tables = connection.getMetaData().getTables(null, null, tableName, new String[]{"TABLE"});
            if (tables.next()) {
                throw new Exception("该表名已存在,请重新输入！");
            }
            tables.close();
            //调用下方的生成建表语句的接口
            String sql = getMySqlCreate(tableName, tableRemarks, columnVos);
            Statement statement = connection.createStatement();
            statement.execute(sql);
            connection.close();
        } else {
            throw new Exception("新建表方法参数空值异常");
        }
    }

 生成MySql的建表语句接口

//生成MySql的建表语句接口
  
public String getMySqlCreate(String tableName, String tableRemarks, List<ColumnVo> columnVos) {
        StringBuffer sqlBuffer = new StringBuffer();
        sqlBuffer.append("create table " + tableName + " (");
        for (int i = 0; i < columnVos.size(); i++) {
            ColumnVo columnVo = columnVos.get(i);
            String columnName = columnVo.getColumnName();
            String columnType = columnVo.getColumnType();
            Integer columnSize = columnVo.getColumnSize();
            if ("整数".equals(columnType)) {
                sqlBuffer.append(columnName + " int " + "(" + columnSize + ") ");
            } else if ("小数".equals(columnType)) {
                sqlBuffer.append(columnName + " double ");
            } else if ("字符串".equals(columnType)) {
                sqlBuffer.append(columnName + " varchar " + "(" + columnSize + ") ");
            } else if ("时间".equals(columnType)) {
                sqlBuffer.append(columnName + " datetime ");
            }
            Boolean isPrimary = columnVo.getPrimary();
            String primary = "";
            if (isPrimary != null && isPrimary) {
                primary = " primary key ";
            }
            Boolean isNullable = columnVo.getNullable();
            String nullable = "";
            if (isNullable != null && !isNullable) {
                nullable = " not null ";
            }
            String remarks = columnVo.getRemarks();
            sqlBuffer.append(primary + nullable + " comment '" + remarks + "',");
        }
        String s = sqlBuffer.toString();
        String sql = s.substring(0, s.length() - 1) + ") COMMENT='" + tableRemarks + "'";
        return sql;
    }