update mybatis

loit-mybatis-example-dependencies/pom.xml

@@ -28,8 +28,8 @@
         <spring-tuple.version>1.0.0.RELEASE</spring-tuple.version>
 
         <druid.version>1.1.12</druid.version>
-        <mybatis-spring.version>1.3.2</mybatis-spring.version>
-        <mybatis-plus.version>3.0.4</mybatis-plus.version>
+<!--        <mybatis-spring.version>1.3.2</mybatis-spring.version>-->
+<!--        <mybatis-plus.version>3.0.4</mybatis-plus.version>-->
         <mybatis.version>3.4.6</mybatis.version>
 
         <loit-build-spi-common.version>1.0-SNAPSHOT</loit-build-spi-common.version>
@@ -44,12 +44,12 @@
 
             <!--Own dependencies -->
             <dependency>
-                <groupId>com.timeloit.project</groupId>
+                <groupId>com.loit.project</groupId>
                 <artifactId>loit-build-spi-common</artifactId>
                 <version>${loit-build-spi-common.version}</version>
             </dependency>
             <dependency>
-                <groupId>com.timeloit.project</groupId>
+                <groupId>com.loit.project</groupId>
                 <artifactId>loit-build-web-common</artifactId>
                 <version>${loit-build-web-common.version}</version>
             </dependency>
@@ -64,16 +64,22 @@
                 <artifactId>druid</artifactId>
                 <version>${druid.version}</version>
             </dependency>
-            <dependency>
-                <groupId>org.mybatis.spring.boot</groupId>
-                <artifactId>mybatis-spring-boot-starter</artifactId>
-                <version>${mybatis-spring.version}</version>
-            </dependency>
+<!--            <dependency>-->
+<!--                <groupId>org.mybatis.spring.boot</groupId>-->
+<!--                <artifactId>mybatis-spring-boot-starter</artifactId>-->
+<!--                <version>${mybatis-spring.version}</version>-->
+<!--            </dependency>-->
             <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus -->
+<!--            <dependency>-->
+<!--                <groupId>com.baomidou</groupId>-->
+<!--                <artifactId>mybatis-plus</artifactId>-->
+<!--                <version>${mybatis-plus.version}</version>-->
+<!--            </dependency>-->
+
             <dependency>
                 <groupId>com.baomidou</groupId>
-                <artifactId>mybatis-plus</artifactId>
-                <version>${mybatis-plus.version}</version>
+                <artifactId>mybatis-plus-boot-starter</artifactId>
+                <version>3.0.4</version>
             </dependency>
 
             <dependency>
@@ -125,6 +131,12 @@
                 <version>${swagger-models.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>com.timeloit.project</groupId>
+                <artifactId>loit-component-jetcache-client</artifactId>
+                <version>1.0-SNAPSHOT</version>
+            </dependency>
+
         </dependencies>
     </dependencyManagement>
 
@@ -154,12 +166,12 @@
         <repository>
             <id>nexus-releases</id>
             <name>Nexus Release Repository</name>
-            <url>http://39.100.254.140:12010/repository/maven-releases/</url>
+            <url>http://113.208.119.11:9101/repository/maven-releases/</url>
         </repository>
         <snapshotRepository>
             <id>nexus-snapshots</id>
             <name>Nexus Snapshot Repository</name>
-            <url>http://39.100.254.140:12010/repository/maven-snapshots/</url>
+            <url>http://113.208.119.11:9101/repository/maven-snapshots/</url>
         </snapshotRepository>
     </distributionManagement>
 
@@ -167,7 +179,7 @@
         <repository>
             <id>nexus-loit-dev</id>
             <name>Nexus Repository</name>
-            <url>http://39.100.254.140:12010/repository/maven-public/</url>
+            <url>http://113.208.119.11:9101/repository/maven-public/</url>
             <snapshots>
                 <enabled>true</enabled>
             </snapshots>
@@ -180,7 +192,7 @@
         <pluginRepository>
             <id>nexus-loit-dev</id>
             <name>Nexus Plugin Repository</name>
-            <url>http://39.100.254.140:12010/repository/maven-public/</url>
+            <url>http://113.208.119.11:9101/repository/maven-public/</url>
             <snapshots>
                 <enabled>true</enabled>
             </snapshots>
@@ -189,4 +201,5 @@
             </releases>
         </pluginRepository>
     </pluginRepositories>
+
 </project>
\ No newline at end of file

loit-mybatis-example-main/pom.xml

@@ -16,14 +16,18 @@
     <dependencies>
 
         <dependency>
-            <groupId>com.timeloit.project</groupId>
+            <groupId>com.loit.project</groupId>
             <artifactId>loit-build-spi-common</artifactId>
         </dependency>
         <dependency>
-            <groupId>com.timeloit.project</groupId>
+            <groupId>com.loit.project</groupId>
             <artifactId>loit-build-web-common</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>com.timeloit.project</groupId>
+            <artifactId>loit-component-jetcache-client</artifactId>
+        </dependency>
 
         <!--common-->
         <dependency>
@@ -114,14 +118,19 @@
             <artifactId>druid</artifactId>
         </dependency>
 
-        <dependency>
-            <groupId>org.mybatis.spring.boot</groupId>
-            <artifactId>mybatis-spring-boot-starter</artifactId>
-        </dependency>
+<!--        <dependency>-->
+<!--            <groupId>org.mybatis.spring.boot</groupId>-->
+<!--            <artifactId>mybatis-spring-boot-starter</artifactId>-->
+<!--        </dependency>-->
+
+<!--        <dependency>-->
+<!--            <groupId>com.baomidou</groupId>-->
+<!--            <artifactId>mybatis-plus</artifactId>-->
+<!--        </dependency>-->
 
         <dependency>
             <groupId>com.baomidou</groupId>
-            <artifactId>mybatis-plus</artifactId>
+            <artifactId>mybatis-plus-boot-starter</artifactId>
         </dependency>
 
         <dependency>
@@ -149,6 +158,8 @@
             <artifactId>swagger-models</artifactId>
         </dependency>
 
+
+
     </dependencies>
 
     <build>

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/LoitMybatisExampleApplication.java

@@ -13,6 +13,7 @@ import org.springframework.cloud.openfeign.EnableFeignClients;
 @EnableFeignClients
 @MapperScan({"com.loit.mybatis.example"})
 //@SpringBootApplication(scanBasePackages = {"com.loit"}, exclude = DataSourceAutoConfiguration.class)
+//@SpringBootApplication
 @SpringBootApplication(scanBasePackages = {"com.loit.mybatis.example"})
 @Slf4j
 public class LoitMybatisExampleApplication {

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/controller/TStorageController.java

@@ -2,13 +2,14 @@ package com.loit.mybatis.example.controller;
 
 
 import com.loit.mybatis.example.dto.CommodityDTO;
+import com.loit.mybatis.example.entity.TStorage;
 import com.loit.mybatis.example.response.ObjectResponse;
+import com.loit.mybatis.example.service.ITStorageCacheService;
 import com.loit.mybatis.example.service.ITStorageService;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
-import javax.annotation.Resource;
-
 /**
  * 前端控制器
  */
@@ -18,8 +19,12 @@ import javax.annotation.Resource;
 public class TStorageController {
 
 
-    @Resource(name = "tStorageServiceImpl")
-    private ITStorageService storageService;
+    @Autowired
+    private ITStorageService iTStorageService;
+
+    @Autowired
+    private ITStorageCacheService iTStorageCacheService;
+
 
     /**
      * 扣减库存
@@ -27,7 +32,7 @@ public class TStorageController {
     @PostMapping("dec_storage")
     ObjectResponse decreaseStorage(@RequestBody CommodityDTO commodityDTO) {
         log.info("请求库存微服务：{}", commodityDTO.toString());
-        return storageService.decreaseStorage(commodityDTO);
+        return iTStorageService.decreaseStorage(commodityDTO);
     }
 
 
@@ -40,7 +45,22 @@ public class TStorageController {
         commodityDTO.setName("水杯");
 
         log.info("请求库存微服务：{}", commodityDTO.toString());
-        return storageService.decreaseStorage(commodityDTO);
+        return iTStorageService.decreaseStorage(commodityDTO);
     }
+
+
+    @GetMapping("testCache")
+    void testCache(Integer storageId) {
+
+        TStorage storageCache = iTStorageCacheService.getStorageCache(storageId);
+        log.info(storageCache.toString());
+    }
+
+
+    @GetMapping("testCacheRemove")
+    void testCacheRemove(Integer storageId) {
+        iTStorageCacheService.removeCache(storageId);
+    }
+
 }
 

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/entity/TStorage.java

 package com.loit.mybatis.example.entity;
 
-import com.baomidou.mybatisplus.annotation.IdType;
-import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.*;
 import com.baomidou.mybatisplus.extension.activerecord.Model;
 import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.experimental.Accessors;
 
 import java.io.Serializable;
 
 
 @Data
+@EqualsAndHashCode(callSuper = false)
+@Accessors(chain = true)
+
+//默认映射表明t_storage 也可以指定 tablename
+@TableName("t_storage")
 public class TStorage extends Model<TStorage> {
 
     private static final long serialVersionUID = 1L;
 
+    //默认 ID 雪花算法Long
+    //如果 字段默认叫ID 且雪花算法 可不加注解
     @TableId(value = "id", type = IdType.AUTO)
     private Integer id;
+
+    //默认数据库中字段是下划线commodity_code
+    // condition 配合查询参数是实体类型
+    @TableField(condition = SqlCondition.LIKE)
     private String commodityCode;
+
+    //如果数据库字段和表字段不一致需要使用注解 @TableField
+    @TableField("name")
     private String name;
+
     private Integer count;
 
+    //
+    //
+    //
+    //
+
+    /**
+     * 排除非表字段
+     * private static String remark;
+     * <p>
+     * 加 transient 后不参与序列号
+     * private transient String remark;
+     */
+    @TableField(exist = false)
+    private String remark;
+
+
     @Override
     protected Serializable pkVal() {
         return this.id;
     }
 
-    @Override
-    public String toString() {
-        return "TStorage{" +
-        ", id=" + id +
-        ", commodityCode=" + commodityCode +
-        ", name=" + name +
-        ", count=" + count +
-        "}";
-    }
 }

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/mapper/TStorageMapper.java

@@ -15,4 +15,8 @@ public interface TStorageMapper extends BaseMapper<TStorage> {
      * @Return:
      */
     int decreaseStorage(@Param("commodityCode") String commodityCode, @Param("count") Integer count);
+
+
+//    @Select("select * from t_storage ${ew.customSqlSegment}")
+//    List<TStorage> selectAll(@Param(Constants.WRAPPER) Wrapper<TStorage> wrapper);
 }

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/service/ITStorageCacheService.java

+package com.loit.mybatis.example.service;
+
+
+import com.loit.mybatis.example.entity.TStorage;
+
+/**
+ * 仓库Cache服务
+ */
+public interface ITStorageCacheService {
+
+    TStorage getStorageCache(Integer storageId);
+
+    void removeCache(Integer storageId);
+}

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/service/ITStorageService.java

@@ -6,6 +6,8 @@ import com.loit.mybatis.example.dto.CommodityDTO;
 import com.loit.mybatis.example.entity.TStorage;
 import com.loit.mybatis.example.response.ObjectResponse;
 
+import java.util.List;
+
 /**
  * 仓库服务
  */
@@ -15,4 +17,18 @@ public interface ITStorageService extends IService<TStorage> {
      * 扣减库存
      */
     ObjectResponse decreaseStorage(CommodityDTO commodityDTO);
+
+    /**
+     * 查询全部库存
+     */
+    List<TStorage> findAll();
+
+    /**
+     * 分页查询库存信息
+     *
+     * @PageNum 当前页
+     * @PageSize 每页显示数量
+     */
+    List<TStorage> findPage(Long pageNum, Long pageSize);
+
 }

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/service/impl/ITStorageCacheServiceImpl.java

+package com.loit.mybatis.example.service.impl;
+
+import com.alicp.jetcache.Cache;
+import com.alicp.jetcache.RefreshPolicy;
+import com.alicp.jetcache.anno.CacheType;
+import com.alicp.jetcache.anno.CreateCache;
+import com.loit.mybatis.example.entity.TStorage;
+import com.loit.mybatis.example.service.ITStorageCacheService;
+import com.loit.mybatis.example.service.ITStorageService;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.Resource;
+import java.util.concurrent.TimeUnit;
+
+@Service("iTStorageCacheService")
+public class ITStorageCacheServiceImpl implements ITStorageCacheService {
+
+    @Resource(name = "iTStorageService")
+    private ITStorageService itStorageService;
+
+    @CreateCache(expire = 100, cacheType = CacheType.REMOTE)
+    private Cache<Integer, TStorage> storageCache;
+
+    @Override
+    public TStorage getStorageCache(Integer storageId) {
+        return storageCache.get(storageId);
+    }
+
+    @Override
+    public void removeCache(Integer id) {
+        storageCache.remove(id);
+    }
+
+    @PostConstruct
+    public void init() {
+        // 自动刷新
+        RefreshPolicy policy = RefreshPolicy.newPolicy(5, TimeUnit.MINUTES).stopRefreshAfterLastAccess(30, TimeUnit.MINUTES);
+        storageCache.config().setLoader(this::loadMenuByUserFromDatabase);
+        storageCache.config().setRefreshPolicy(policy);
+    }
+
+    private TStorage loadMenuByUserFromDatabase(Integer id) {
+        return itStorageService.getById(id);
+    }
+
+}

loit-mybatis-example-main/src/main/java/com/loit/mybatis/example/service/impl/TStorageServiceImpl.java

 package com.loit.mybatis.example.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.loit.mybatis.example.dto.CommodityDTO;
 import com.loit.mybatis.example.entity.TStorage;
@@ -7,16 +10,20 @@ import com.loit.mybatis.example.enums.RspStatusEnum;
 import com.loit.mybatis.example.mapper.TStorageMapper;
 import com.loit.mybatis.example.response.ObjectResponse;
 import com.loit.mybatis.example.service.ITStorageService;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.List;
+
 /**
  * <p>
  * 库存服务实现类
  * </p>
  */
-@Service(value = "tStorageServiceImpl")
+@Service(value = "iTStorageService")
 @Transactional(readOnly = true)
+@Slf4j
 public class TStorageServiceImpl extends ServiceImpl<TStorageMapper, TStorage> implements ITStorageService {
 
     @Override
@@ -33,6 +40,37 @@ public class TStorageServiceImpl extends ServiceImpl<TStorageMapper, TStorage> i
 
         response.setStatus(RspStatusEnum.FAIL.getCode());
         response.setMessage(RspStatusEnum.FAIL.getMessage());
+
         return response;
     }
+
+
+    @Override
+    public List<TStorage> findAll() {
+
+//        方式一:
+//        List<TStorage> allStorage = this.list(null);
+
+//        方式二:
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        List<TStorage> allStorage = this.list(queryWrapper);
+
+//        方式三:
+//        TStorage storage = new TStorage();
+//        List<TStorage> allStorage = storage.selectAll();
+
+        return allStorage;
+    }
+
+    @Override
+    public List<TStorage> findPage(Long pageNum, Long pageSize) {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        Page<TStorage> page = new Page<>(pageNum, pageSize);
+        //分页数据
+        IPage<TStorage> pageInfo = this.page(page, queryWrapper);
+        return pageInfo.getRecords();
+
+    }
+
 }

loit-mybatis-example-main/src/main/java/com/loit/package-info.java

+package com.loit;
\ No newline at end of file

loit-mybatis-example-main/src/main/resources/application-dev.yml

@@ -49,5 +49,45 @@ spring:
     username: root
     validation-query: SELECT 1
 
-mybatis:
+#mybatis:
+#  mapper-locations: classpath*:/mapper/*.xml
+#  # 实体扫描，多个package用逗号或者分号分隔
+#  type-aliases-package: com.loit.mybatis.example
+#  configuration:
+#    # 这个配置会将执行的sql打印出来，在开发或测试的时候可以用
+#    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+
+mybatis-plus:
   mapper-locations: classpath*:/mapper/*.xml
+
+# jetcache使用
+jetcache:
+  areaInCacheName: false
+  # 控制台输出统计数据，统计间隔，0表示不统计
+  statIntervalMinutes: 1
+  local:
+    default:
+      limit: 300
+      expireAfterWriteInMillis: 100000
+      # 缓存类型。tair、redis为当前支持的远程缓存；linkedhashmap、caffeine为当前支持的本地缓存类型
+      type: linkedhashmap
+      keyConvertor: fastjson
+  remote:
+    default:
+      keyConvertor: fastjson
+      valueEncoder: java
+      valueDecoder: java
+      poolConfig:
+        minIdle: 5
+        maxIdle: 20
+        maxTotal: 50
+      type: redis.lettuce
+      uri: redis://portal2019@39.100.254.140:6379/
+      #redis://password@127.0.0.1:6379/0
+
+logging:
+  level:
+    root: warn
+    com.loit.mybatis: trace
+  pattern:
+    console: '%p%m%n'

loit-mybatis-example-main/src/main/resources/mapper/TStorageMapper.xml

@@ -22,4 +22,5 @@
         update t_storage set count = count-${count} where commodity_code = #{commodityCode}
     </update>
 
+
 </mapper>

loit-mybatis-example-main/src/test/java/com/loit/mybatis/example/dao/SimpleTest.java

+package com.loit.mybatis.example.dao;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.loit.mybatis.example.entity.TStorage;
+import com.loit.mybatis.example.mapper.TStorageMapper;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang.StringUtils;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@Slf4j
+public class SimpleTest {
+
+    @Autowired
+    private TStorageMapper tStorageMapper;
+
+    @Test
+    public void select() {
+        List<TStorage> storageList = tStorageMapper.selectList(null);
+
+        log.info(storageList.toString());
+    }
+
+
+    @Test
+    public void insert() {
+        TStorage storage = new TStorage();
+
+        storage.setName("pod1").setCount(9999).setCommodityCode("0002");
+
+        int count = tStorageMapper.insert(storage);
+
+        log.info(String.valueOf(count));
+    }
+
+    @Test
+    public void selectById() {
+        TStorage storage = tStorageMapper.selectById(1);
+        log.info(storage.toString());
+    }
+
+
+    @Test
+    public void selectByIds() {
+        List<Integer> ids = Arrays.asList(1, 2);
+
+        List<TStorage> storageList = tStorageMapper.selectBatchIds(ids);
+        log.info(storageList.toString());
+    }
+
+
+    @Test
+    public void selectByMap() {
+
+        Map<String, Object> columnMap = new HashMap<>();
+        columnMap.put("commodity_code", "0002");
+        columnMap.put("name", "pod1");
+
+        List<TStorage> storageList = tStorageMapper.selectByMap(columnMap);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * 测试条件构造器
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE commodity_code LIKE ? AND count < ?
+     * DEBUG==> Parameters: C%(String), 888(Integer)
+     */
+    @Test
+    public void selectByWrapper() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.likeRight("commodity_code", "C");
+        //queryWrapper.like("commodity_code", "C");
+        queryWrapper.lt("count", 888);
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+    /**
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE commodity_code LIKE ? OR count < ? ORDER BY commodity_code DESC , id ASC
+     * DEBUG==> Parameters: C%(String), 888(Integer)
+     */
+    @Test
+    public void selectByWrapperTwo() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.likeRight("commodity_code", "C").or();
+        //queryWrapper.like("commodity_code", "C");
+        queryWrapper.lt("count", 888).orderByDesc("commodity_code").orderByAsc("id");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+    /**
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE date_format(create_time,'%Y-%m-%d') = ?
+     * DEBUG==> Parameters: 2020-02-10(String)
+     */
+    @Test
+    public void selectByWrapperThree() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.apply("date_format(create_time,'%Y-%m-%d') = {0}", "2020-02-10");
+        //queryWrapper.inSql("commodity_code","select commodity_code from xxxx where ");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * SELECT id,commodity_code,name,count FROM t_storage WHERE commodity_code LIKE ? AND ( count < ? ) ORDER BY commodity_code DESC , id ASC
+     */
+    @Test
+    public void selectByWrapperFour() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.likeRight("commodity_code", "C").and(qw -> qw.lt("count", 888));
+        queryWrapper.orderByDesc("commodity_code").orderByAsc("id");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * SELECT id,commodity_code,name,count FROM t_storage WHERE ( commodity_code LIKE ? OR count < ? ) AND id = ? ORDER BY commodity_code DESC , id ASC
+     */
+    @Test
+    public void selectByWrapperFive() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.nested(qw -> qw.likeRight("commodity_code", "C").or().lt("count", 888));
+        queryWrapper.eq("id", 2);
+        queryWrapper.orderByDesc("commodity_code").orderByAsc("id");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT id,commodity_code FROM t_storage WHERE id IN (?,?) limit 1
+     * DEBUG==> Parameters: 1(Integer), 2(Integer)
+     */
+    @Test
+    public void selectByWrapperSix() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.in("id", Arrays.asList(1, 2)).last(" limit 1");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    @Test
+    public void selectByWrapperSeven() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.select("id", "commodity_code").in("id", Arrays.asList(1, 2)).last(" limit 1");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT id,commodity_code,count FROM t_storage WHERE id IN (?,?) limit 1
+     * DEBUG==> Parameters: 1(Integer), 2(Integer)
+     */
+    @Test
+    public void selectByWrapperEight() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.in("id", Arrays.asList(1, 2)).last(" limit 1");
+        queryWrapper.select(TStorage.class, info -> !info.getColumn().equals("create_time") && !info.getColumn().equals("name"));
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * 条件表达式
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE 1=1 ORDER BY commodity_code DESC , id ASC
+     * DEBUG==> Parameters:
+     */
+    @Test
+    public void selectByWrapperNight() {
+
+        String commodityCode = "";
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        queryWrapper.likeRight(StringUtils.isNotEmpty(commodityCode), "commodity_code", "C");
+        queryWrapper.orderByDesc("commodity_code").orderByAsc("id");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT commodity_code,name,count,id FROM t_storage WHERE commodity_code=? AND 1=1 ORDER BY commodity_code DESC , id ASC
+     * DEBUG==> Parameters: 0002(String)
+     *
+     * @TableField(condition = SqlCondition.LIKE)
+     * DEBUG==>  Preparing: SELECT commodity_code,name,count,id FROM t_storage WHERE commodity_code LIKE CONCAT('%',?,'%') AND 1=1 ORDER BY commodity_code DESC , id ASC
+     * DEBUG==> Parameters: 0002(String)
+     */
+    @Test
+    public void selectByWrapperEntity() {
+
+
+        TStorage whereStorage = new TStorage();
+        whereStorage.setCommodityCode("0002");
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>(whereStorage);
+        queryWrapper.orderByDesc("commodity_code").orderByAsc("id");
+
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE commodity_code = ? AND name IS NULL
+     * DEBUG==> Parameters: 0002(String)
+     * <p>
+     * queryWrapper.allEq(params, false);
+     * <p>
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE commodity_code = ?
+     * DEBUG==> Parameters: 0002(String)
+     */
+    @Test
+    public void selectByWrapperAllEq() {
+
+        Map<String, Object> params = new HashMap<>();
+        params.put("commodity_code", "0002");
+        params.put("name", null);
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+        //queryWrapper.allEq(params);
+        //queryWrapper.allEq(params, true);
+        //queryWrapper.allEq(params, false);
+
+        queryWrapper.allEq((k, v) -> !k.equals("commodity_code"), params, false);
+        List<TStorage> storageList = tStorageMapper.selectList(queryWrapper);
+        log.info(storageList.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT commodity_code FROM t_storage WHERE commodity_code = ?
+     * DEBUG==> Parameters: 0002(String)
+     */
+    @Test
+    public void selectByWrapperSelectMap() {
+
+        Map<String, Object> params = new HashMap<>();
+        params.put("commodity_code", "0002");
+        params.put("name", null);
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+
+        queryWrapper.allEq(params, false).select("commodity_code");
+        List<Map<String, Object>> maps = tStorageMapper.selectMaps(queryWrapper);
+        log.info(maps.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT avg(count) avg1,avg(count) avg2 FROM t_storage WHERE 1=1 GROUP BY commodity_code HAVING sum(count) <?
+     * DEBUG==> Parameters: 999999(Integer)
+     */
+    @Test
+    public void selectByWrapperSelectMapTwo() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+
+        queryWrapper.select("avg(count) avg1", "avg(count) avg2");
+        queryWrapper.groupBy("commodity_code").having("sum(count) <{0}", 999999);
+        List<Map<String, Object>> maps = tStorageMapper.selectMaps(queryWrapper);
+        log.info(maps.toString());
+
+    }
+
+
+    /**
+     * selectObjs 是有一列数据
+     */
+    @Test
+    public void selectByWrapperSelectMapObject() {
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>();
+
+        queryWrapper.select("avg(count) avg1", "avg(count) avg2");
+        queryWrapper.groupBy("commodity_code").having("sum(count) <{0}", 999999);
+        List<Object> maps = tStorageMapper.selectObjs(queryWrapper);
+        log.info(maps.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT COUNT(1) FROM t_storage WHERE commodity_code LIKE CONCAT('%',?,'%')
+     * DEBUG==> Parameters: 0002(String)
+     */
+    @Test
+    public void selectByWrapperSelectCount() {
+
+        TStorage whereStorage = new TStorage();
+        whereStorage.setCommodityCode("0002");
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>(whereStorage);
+
+        Integer integer = tStorageMapper.selectCount(queryWrapper);
+        log.info(String.valueOf(integer));
+
+    }
+
+
+    @Test
+    public void selectByWrapperSelectOne() {
+
+        TStorage whereStorage = new TStorage();
+        whereStorage.setCommodityCode("0002");
+
+        QueryWrapper<TStorage> queryWrapper = new QueryWrapper<>(whereStorage);
+
+        TStorage storage = tStorageMapper.selectOne(queryWrapper);
+        log.info(storage.toString());
+
+    }
+
+
+    /**
+     * DEBUG==>  Preparing: SELECT id,commodity_code,name,count FROM t_storage WHERE commodity_code LIKE ?
+     * DEBUG==> Parameters: %C%(String)
+     */
+    @Test
+    public void selectByWrapperSelectLambda() {
+
+        LambdaQueryWrapper<TStorage> lambda = new QueryWrapper<TStorage>().lambda();
+        // LambdaQueryWrapper<TStorage> tStorageLambdaQueryWrapper = new LambdaQueryWrapper<>();
+
+        lambda.like(TStorage::getCommodityCode, "C");
+
+        List<TStorage> storageList = tStorageMapper.selectList(lambda);
+        log.info(storageList.toString());
+    }
+
+
+    /**
+     * 自定义
+     *
+     * @Select("select * from t_storage ${ew.customSqlSeg}")
+     * List<TStorage> selectAll(@Param(Constants.WRAPPER) Wrapper<TStorage> wrapper);
+     */
+//    @Test
+//    public void selectByWrapperSelectMy() {
+//
+//        LambdaQueryWrapper<TStorage> lambda = new QueryWrapper<TStorage>().lambda();
+//        lambda.like(TStorage::getCommodityCode, "C");
+//
+//        List<TStorage> storageList = tStorageMapper.selectAll(lambda);
+//        log.info(storageList.toString());
+//    }
+
+
+}

loit-mybatis-example-main/src/test/java/com/loit/mybatis/example/package-info.java

+package com.loit.mybatis.example;
\ No newline at end of file

loit-mybatis-example-main/src/test/java/com/loit/mybatis/example/service/ITStorageServiceTest.java

+package com.loit.mybatis.example.service;
+
+
+import com.loit.mybatis.example.entity.TStorage;
+import lombok.extern.slf4j.Slf4j;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import javax.annotation.Resource;
+import java.util.List;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@Slf4j
+public class ITStorageServiceTest {
+
+    @Resource(name = "iTStorageService")
+    private ITStorageService itStorageService;
+
+
+    @Test
+    public void testFindAll() {
+        List<TStorage> allDate = itStorageService.findAll();
+        log.info(allDate.toString());
+    }
+
+    @Test
+    public void testFindPage() {
+        List<TStorage> allDate = itStorageService.findPage(0L, 20L);
+        log.info(allDate.toString());
+    }
+
+
+    @Test
+    public void testGetById() {
+        TStorage storage = itStorageService.getById(1);
+        log.info(storage.toString());
+    }
+}

sql/t_storage.sql

+/*
+Navicat MySQL Data Transfer
+
+Source Server         : 39.98.202.173seata
+Source Server Version : 50725
+Source Host           : 39.98.202.173:3306
+Source Database       : loit-example-seata
+
+Target Server Type    : MYSQL
+Target Server Version : 50725
+File Encoding         : 65001
+
+Date: 2020-02-10 09:21:32
+*/
+
+SET FOREIGN_KEY_CHECKS=0;
+
+-- ----------------------------
+-- Table structure for t_storage
+-- ----------------------------
+DROP TABLE IF EXISTS `t_storage`;
+CREATE TABLE "t_storage" (
+  "id" int(11) NOT NULL AUTO_INCREMENT,
+  "commodity_code" varchar(255) DEFAULT NULL,
+  "name" varchar(255) DEFAULT NULL,
+  "count" int(11) DEFAULT '0',
+  "create_time" datetime DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY ("id"),
+  UNIQUE KEY "commodity_code" ("commodity_code")
+) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;