# common-mapper

**Repository Path**: cuicanxingchen/common-mapper

## Basic Information

- **Project Name**: common-mapper
- **Description**: mybatis通用mapper，支持简单表关系注解配置
- **Primary Language**: Java
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 3
- **Created**: 2021-06-09
- **Last Updated**: 2021-06-09

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# common-mapper
Mybatis universal mapper, supports simple table relation annotation configuration, no intrusion, no redundant configuration, just inherit the basic interface

### Quick start

+ At present, it is not published to the central warehouse. You can clone the project, compile it into jar package with maven, and introduce it locally with Maven.

```xml

<dependency>
  <groupId>%groupId%</groupId>
    <artifactId>%artifactId%</artifactId>
    <version>%version%</version>
    <scope>system</scope>
  <systemPath>${project.basedir}\src\main\libs\%jarName%.jar</systemPath>
</dependency>

```

+ Create entity

```java
@Table("demo")
public class Demo {

    @Primary
    private String id;
    private String name;
    private String birthday;
    private Date createTime;

    public String getId() {
        return ID;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getBirthday() {
        return this.birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }

    public Date getCreateTime() {
        return createTime;
    }

    public void setCreateTime(Date createTime) {
        this.createTime = createTime;
    }

}

```

+ Create mapper interface to inherit basemapper

```java

@Repository
public interface DemoMapper extends BaseMapper<Demo, String> {

}

```



+ Create test class

```java

@RunWith(SpringRunner.class)
@SpringBootTest
public class CommonMapperApplicationTests {

@Autowired
DemoMapper demoMapper;

@Test
public void contextLoads() {

  demoMapper.select();
  
  }
}

```



Annotation of the Chinese characters


#### **@Table** configure entity correspondence table

+ value: database table name



#### **@Column** configure entity properties and corresponding field information

+ value: the corresponding database field. If it is not configured with the default attribute name, the hump name will be changed to underline name


#### **@Primary** configure the property as primary key

+ value: property is primary key

#### **@Joincolumn** configure association table

+ tablename: table to associate

+ column: which field in the associated table to show

+ relations: field relations

#### **@Association** Field Association

+ target: field in the corresponding table of the current entity

+ association: corresponding field in association table

#### **@Transient** configuration property is not in the database

**Pagehelper is recommended for paging**