更新后端，采用Springboot+mybatis

src/main/java/com/jsh/erp/service/unit/UnitService.java

@@ -0,0 +1,68 @@
+package com.jsh.erp.service.unit;
+
+import com.alibaba.fastjson.JSONObject;
+import com.jsh.erp.datasource.entities.Unit;
+import com.jsh.erp.datasource.entities.UnitExample;
+import com.jsh.erp.datasource.mappers.UnitMapper;
+import com.jsh.erp.utils.StringUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import java.util.List;
+
+@Service
+public class UnitService {
+    private Logger logger = LoggerFactory.getLogger(UnitService.class);
+
+    @Resource
+    private UnitMapper unitMapper;
+
+    public Unit getUnit(long id) {
+        return unitMapper.selectByPrimaryKey(id);
+    }
+
+    public List<Unit> getUnit() {
+        UnitExample example = new UnitExample();
+        return unitMapper.selectByExample(example);
+    }
+
+    public List<Unit> select(String name, int offset, int rows) {
+        return unitMapper.selectByConditionUnit(name, offset, rows);
+    }
+
+    public int countUnit(String name) {
+        return unitMapper.countsByUnit(name);
+    }
+
+    public int insertUnit(String beanJson, HttpServletRequest request) {
+        Unit unit = JSONObject.parseObject(beanJson, Unit.class);
+        return unitMapper.insertSelective(unit);
+    }
+
+    public int updateUnit(String beanJson, Long id) {
+        Unit unit = JSONObject.parseObject(beanJson, Unit.class);
+        unit.setId(id);
+        return unitMapper.updateByPrimaryKeySelective(unit);
+    }
+
+    public int deleteUnit(Long id) {
+        return unitMapper.deleteByPrimaryKey(id);
+    }
+
+    public int batchDeleteUnit(String ids) {
+        List<Long> idList = StringUtil.strToLongList(ids);
+        UnitExample example = new UnitExample();
+        example.createCriteria().andIdIn(idList);
+        return unitMapper.deleteByExample(example);
+    }
+
+    public int checkIsNameExist(Long id, String name) {
+        UnitExample example = new UnitExample();
+        example.createCriteria().andIdNotEqualTo(id).andUnameEqualTo(name);
+        List<Unit> list = unitMapper.selectByExample(example);
+        return list.size();
+    }
+}