fix:在sql中使用or

src/main/java/com/kwan/springbootkwan/controller/UserController.java

@@ -6,15 +6,12 @@ import com.kwan.springbootkwan.service.IUserService;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.ibatis.annotations.Param;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpRequest;
 import org.springframework.validation.BindingResult;
 import org.springframework.validation.ObjectError;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
-import javax.servlet.http.HttpServletRequest;
 import java.io.UnsupportedEncodingException;
 import java.util.ArrayList;
 import java.util.List;
@@ -67,4 +64,13 @@ public class UserController {
     public User getUserByName(@RequestParam String sex) {
         return userService.getUserByName(sex);
     }
+
+
+    @ApiOperation(value = "or拼接", notes = "or拼接")
+    @RequestMapping(value = "/getUserByOr", method = RequestMethod.GET)
+    public List<User> getUserByOr() {
+        return userService.getUserByOr();
+    }
+
+
 }
\ No newline at end of file

src/main/java/com/kwan/springbootkwan/entity/query/QueryInfo.java

+package com.kwan.springbootkwan.entity.query;
+
+import lombok.Data;
+
+@Data
+public class QueryInfo {
+
+    private String invQtyA;
+    private String invQtyB;
+    private String invQtyC;
+    private String invQtyD;
+
+}

src/main/java/com/kwan/springbootkwan/mapper/UserMapper.java

@@ -3,6 +3,9 @@ package com.kwan.springbootkwan.mapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.kwan.springbootkwan.entity.User;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
 
 
 /**
@@ -15,6 +18,20 @@ import org.apache.ibatis.annotations.Mapper;
 @Mapper
 public interface UserMapper extends BaseMapper<User> {
 
+    /**
+     * 通过性别获取user
+     *
+     * @param sex
+     * @return
+     */
     User getUserByName(String sex);
+
+    /**
+     * 通过id获取user
+     *
+     * @param invFlag
+     * @return
+     */
+    List<User> getUserByOr(@Param("invFlag") List<Integer> invFlag);
 }
 

src/main/java/com/kwan/springbootkwan/service/IUserService.java

@@ -37,4 +37,11 @@ public interface IUserService extends IService<User> {
      */
     User saveUser(User user);
 
+    /**
+     * 使用or拼接数据
+     *
+     * @return
+     */
+    List<User> getUserByOr();
+
 }

src/main/java/com/kwan/springbootkwan/service/impl/UserServiceImpl.java

@@ -11,6 +11,7 @@ import io.seata.spring.annotation.GlobalTransactional;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 
@@ -53,4 +54,14 @@ public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IU
         personService.savePerson(person);
         return user;
     }
+
+    @Override
+    public List<User> getUserByOr() {
+        List<Integer> invFlag = new ArrayList<>();
+        invFlag.add(1);
+        invFlag.add(2);
+        invFlag.add(3);
+        invFlag.add(4);
+        return userMapper.getUserByOr(invFlag);
+    }
 }
\ No newline at end of file

src/main/resources/mapper/UserMapper.xml

@@ -14,4 +14,25 @@
         FROM user
         WHERE sex = #{sex}
     </select>
+    <select id="getUserByOr" resultType="com.kwan.springbootkwan.entity.User">
+        SELECT *
+        FROM user
+        WHERE 1 = 1
+        <if test="invFlag != null and invFlag.size>0">
+            <foreach collection="invFlag" item="flag" open="AND (" close=")" separator="or">
+                <if test="flag==1">
+                    id &lt;= 1
+                </if>
+                <if test="flag==2">
+                    id &gt;= 2 and id &lt; 4
+                </if>
+                <if test="flag==3">
+                    id &gt;= 5 and id &lt; 6
+                </if>
+                <if test="flag==4">
+                    id &gt;= 8 and id &lt; 9
+                </if>
+            </foreach>
+        </if>
+    </select>
 </mapper>