1.搭建使用idea搭建srpingboot项目
在pom.xml文件中引入如下的依赖:
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- swagger文档相关依赖--> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.1.2</version> </dependency> <!-- swagger文档相关依赖上下2个依赖的版本号必须一致--> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.1.2</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!-- mybatis相关依赖--> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.2.2</version> </dependency> <!-- 使用阿里的druid数据库连接池--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!-- jdbc相关插件--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> <version>1.5.19.RELEASE</version> </dependency> <!-- mysql相关插件--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version> </dependency> <!-- 分页插件 --> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper-spring-boot-starter</artifactId> <version>1.2.3</version> </dependency> <!-- 用来将对象转成json和将json转为对象 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.12</version> </dependency>
spring项目配置文件:application.yml,如果是application.properties,那么建议改成yml格式,配置如下:
server:
port: 2300
spring:
application:
name: run
datasource:
druid:
url: jdbc:mysql://192.168.50.117:23306/shop?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&useSSL=false
username: shop
password: shop
filter:
stat:
db-type: mysql
log-slow-sql: true
slow-sql-millis: 3000
enabled: true
wall:
config:
multi-statement-allow: true
enabled: true
filters: stat,wall #防御SQL注入的filter:wall
initial-size: 1 #初始化连接数量
max-active: 10 #最大并发连接数
min-idle: 1 #最小空闲连接数
max-wait: 60000 #配置获取连接等待超时的时间
time-between-eviction-runs-millis: 60000 #间隔多久才进行一次检测
min-evictable-idle-time-millis: 300000 #一个连接在池中最小生存的时间
test-on-borrow: false
test-on-return: false
test-while-idle: true
validation-query: SELECT 'lll'
# 打开PSCache，并且指定每个连接上PSCache的大小
poolPreparedStatements: true
maxPoolPreparedStatementPerConnectionSize: 20
# 内置监控页面的首页是/druid/index.html
stat-view-servlet:
enabled: true
url-pattern: /druid/*
login-username: flex
login-password: flex
reset-enable: false
//包结构如下创建:
//其中domain,mapper接口和mapper.xml可以通过mybatis生产工具生成.一般可以在百度下载一个生产工具,然后生成对应的类后就拷贝到项目来:
此处可以参考别人提供的方法:https://www.cnblogs.com/smileberry/p/4145872.html
如下是我下载的一个项目:
接着在主配置类上配上mapper的包扫描路径:
@SpringBootApplication @MapperScan("com.example.demo.mapper") public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }
//创建service和实现类(具体分页逻辑后面分析)
public interface IOrderMastService { ShopOrderMast getOrderMastByOrderId(String orderId); PageInfo<ShopOrderMast> selectOrderList(OrderQueryObject queryObject); } @Service public class OrderMastServiceImpl implements IOrderMastService{ private final static Logger logger = LoggerFactory.getLogger(OrderMastServiceImpl.class); @Autowired private ShopOrderMastMapper orderMastMapper; @Override public ShopOrderMast getOrderMastByOrderId(String orderId) { return orderMastMapper.findOrderByOrderId(orderId); } @Override public PageInfo<ShopOrderMast> selectOrderList(OrderQueryObject queryObject) { logger.info("请求参数:{}", JSON.toJSONString(queryObject)); PageHelper.startPage(queryObject.getCurrentNum(),queryObject.getPageSize()); List<ShopOrderMast> list= orderMastMapper.selectOrderList(queryObject); logger.info("返回值:{}", JSON.toJSONString(list)); return new PageInfo<>(list); } }
//mapper接口
@Repository
public interface ShopOrderMastMapper {
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table shop_order_mast
*
* @mbggenerated
*/
int deleteByPrimaryKey(Long codId);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table shop_order_mast
*
* @mbggenerated
*/
int insert(ShopOrderMast record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table shop_order_mast
*
* @mbggenerated
*/
int insertSelective(ShopOrderMast record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table shop_order_mast
*
* @mbggenerated
*/
ShopOrderMast selectByPrimaryKey(Long codId);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table shop_order_mast
*
* @mbggenerated
*/
int updateByPrimaryKeySelective(ShopOrderMast record);
/**
* This method was generated by MyBatis Generator.
* This method corresponds to the database table shop_order_mast
*
* @mbggenerated
*/
int updateByPrimaryKey(ShopOrderMast record);
ShopOrderMast findOrderByOrderId(String orderId);
List<ShopOrderMast> selectOrderList(OrderQueryObject queryObject);
}
//controller
@Controller
@Api(value ="订单",description ="订单相关接口" ) //API注解是用来对类进行描述
public class ShopOrderController {
private final static Logger logger = LoggerFactory.getLogger(ShopOrderController.class);
@Autowired
private IOrderMastService orderMastService;
@RequestMapping(value = "shop/order/{orderId}",method = RequestMethod.GET)
@ResponseBody
@ApiOperation(value ="订单查询",notes ="通过订单号查询对应的订单",httpMethod ="POST")//对该方法进行说明
public ShopOrderMast findOrderMastByOrderId(@PathVariable("orderId") String orderId){
return orderMastService.getOrderMastByOrderId(orderId);
}
@RequestMapping(value = "shop/order/list",method = RequestMethod.POST)
@ResponseBody
@ApiOperation(value ="订单列表",notes ="订单列表分页查询",httpMethod ="POST")//对该方法进行说明
public PageInfo<ShopOrderMast> findOrderMastByOrderId(@RequestBody OrderQueryObject queryObject){
return orderMastService.selectOrderList(queryObject);
}
}
mapper.xml(提供部分信息)
<select id="findOrderByOrderId" resultMap="BaseResultMap">
select * from shop_order_mast WHERE cod_order_id=#{orderId};
</select>
<select id="selectOrderList" resultMap="BaseResultMap">
select * from shop_order_mast WHERE flg_status_order=#{orderStatu} ORDER by dat_order_submit DESC
</select>
//分页请求参数对象
public class QueryObject {
@ApiModelProperty("当前页")
private int currentNum=1;
@ApiModelProperty("总页数")
private int pageSize=10;
public int getCurrentNum() {
return currentNum;
}
public void setCurrentNum(int currentNum) {
this.currentNum = currentNum;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
}
public class OrderQueryObject extends QueryObject {
@ApiModelProperty("订单状态")
private int orderStatu;
public int getOrderStatu() {
return orderStatu;
}
public void setOrderStatu(int orderStatu) {
this.orderStatu = orderStatu;
}
}
分页实现总结:
