4.3、编写FindAll
代码语言：javascript复制import com.baomidou.mybatisplus.core.enums.SqlMethod;
import com.baomidou.mybatisplus.core.injector.AbstractMethod;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlSource;
public class FindAll extends AbstractMethod {
@Override
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?>
modelClass, TableInfo tableInfo) {
String sqlMethod = "findAll";
String sql = "select * from " tableInfo.getTableName();
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sql,
modelClass);
return this.addSelectMappedStatement(mapperClass, sqlMethod, sqlSource,
modelClass, tableInfo);
}
}4.4、注册到Spring容器
代码语言：javascript复制/**
* 自定义SQL注入器
*/
@Bean
public MySqlInjector mySqlInjector(){
return new MySqlInjector();
}4.5、测试
代码语言：javascript复制@Test
public void testFindAll(){
List<User> users = this.userMapper.findAll();
for (User user : users) {
System.out.println(user);
}
}输出的SQL：
代码语言：javascript复制[main] [cn.itcast.mp.mapper.UserMapper.findAll]-[DEBUG] ==> Preparing: select * from
tb_user
[main] [cn.itcast.mp.mapper.UserMapper.findAll]-[DEBUG] ==> Parameters:
[main] [cn.itcast.mp.mapper.UserMapper.findAll]-[DEBUG] <== Total: 10至此，我们实现了全局扩展SQL注入器。
