记一次MyBatisPlus问题(如果表名是数据库关键字怎么办)

问题信息:
如果表名是数据库关键字怎么办？

正常来说，如果是我们自己写sql的话，给表名加反引号即可解决问题。

但是由于我们使用MyBatisPlus，相关的sql基本上都是封装并自动生成的。如果是这种场景，我们就需要修改对应的实体，举例说明，如下代码:

import com.baomidou.mybatisplus.enums.IdType;
import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.activerecord.Model;
import java.io.Serializable;
public class Group extends Model<Group> {
private static final long serialVersionUID = 1L;
/**
* 组ID
*/
@TableId(value = "id", type = IdType.AUTO)
private Integer id;
/**
* 组名
*/
private String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
protected Serializable pkVal() {
return this.id;
}
@Override
public String toString() {
return "Group{" +
"id=" + id +
", name=" + name +
"}";
}
}

用上述代码的自动生成肯定会有问题，以单条数据查询为例，默认是 select id,name from group where id = 1，又因为group属于关键字，接下来会出现如下错误信息:

### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group WHERE id=1' at line 1
; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group WHERE id=1' at line 1] with root cause
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group WHERE id=1' at line 1

这种错误信息，很容易识别，一看就是sql写的有问题。但实际上sql并没有问题，只不过是因为关键字冲突导致sql错误。

那么如何解决这个问题呢？
答案是只需加一个@TableName注解即可解决该问题。修改后的实体代码如下:

import com.baomidou.mybatisplus.enums.IdType;
import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.annotations.TableName;
import com.baomidou.mybatisplus.activerecord.Model;
import java.io.Serializable;
@TableName("`group`")
public class Group extends Model<Group> {
private static final long serialVersionUID = 1L;
/**
* 组ID
*/
@TableId(value = "id", type = IdType.AUTO)
private Integer id;
/**
* 组名
*/
private String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
protected Serializable pkVal() {
return this.id;
}
@Override
public String toString() {
return "Group{" +
"id=" + id +
", name=" + name +
"}";
}
}