1、公式管理类DetermineFormulaController新增getParams()用来识别字符串公式中的参数列表

lab-service-api/lab-system-api/lab-system-api.iml

@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
   <component name="FacetManager">
-    <facet type="Spring" name="Spring">
-      <configuration />
-    </facet>
     <facet type="web" name="Web">
       <configuration>
         <webroots />
       </configuration>
     </facet>
+    <facet type="Spring" name="Spring">
+      <configuration />
+    </facet>
   </component>
   <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
     <output url="file://$MODULE_DIR$/target/classes" />

lab-service/lab-lims/pom.xml

@@ -22,7 +22,11 @@
     </repositories>
 
     <dependencies>
-
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>QLExpress</artifactId>
+            <version>3.2.0</version>
+        </dependency>
         <!--word页码-->
         <dependency>
             <groupId>e-iceblue</groupId>

lab-service/lab-lims/src/main/java/org/springblade/lims/controller/DetermineFormulaController.java

@@ -18,14 +18,16 @@ import org.springblade.lims.entry.DetermineFormula;
 import org.springblade.lims.entry.ExamineItem;
 import org.springblade.lims.service.IDetermineFormulaService;
 import org.springblade.lims.service.IExamineItemService;
+import org.springblade.lims.utils.FormulaTool;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.Date;
+import java.util.List;
 
 
 /**
  *
- *
+ * 试剂公式管理
  * @author swj
  * @since 2022年6月5日16:07:32
  */
@@ -84,4 +86,21 @@ public class DetermineFormulaController extends BladeController {
     public R deleteByIds(@ApiParam(value = "主键集合", required = true) @RequestParam String ids) {
         return R.status(service.deleteLogic(Func.toLongList(ids)));
     }
+
+    /**
+     * 根据公式的字符串识别公式中参数
+     * @param formulaStr 数学公式的字符串，如 (x-v1)/(v2-v1)
+     * @return 参数的string类型的列表
+     */
+    @GetMapping("getParams")
+    @ApiOperation(value="根据公式的字符串识别公式中参数", notes="传入string")
+    public R getParams(@ApiParam(value = "公式string", required = true) @RequestParam String formulaStr){
+        try{
+            List<String> strings = FormulaTool.paraList(formulaStr);
+            return R.data(strings);
+        }catch (Exception e){
+            return R.fail(e.getMessage());
+        }
+
+    }
 }

lab-service/lab-lims/src/main/java/org/springblade/lims/utils/FormulaTool.java

@@ -0,0 +1,42 @@
+package org.springblade.lims.utils;
+
+import com.ql.util.express.DefaultContext;
+import com.ql.util.express.ExpressRunner;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 数学公式相关方法
+ * @author ytl
+ * @since 2022-09-14  17:01
+ */
+public class FormulaTool {
+    private static ExpressRunner runner;
+
+    static{
+        runner = new ExpressRunner(true,false);
+    }
+
+    //返回公式中参数的列表
+    public static List<String> paraList(String regx) throws Exception{
+        String[] paras = runner.getOutVarNames(regx);
+        List<String> strings = Arrays.asList(paras);
+        return strings;
+    }
+
+    //返回公式的计算结果
+    public static String getResult(String regx, Map<String,Object> params) throws Exception{
+        DefaultContext<String, Object> context = new DefaultContext<>();
+        //给参数赋值
+        params.forEach((k,v)->{
+            context.put(k,Double.valueOf(v.toString()));
+        });
+
+        //计算
+        Object result = runner.execute(regx, context, null, true, false);
+
+        return result.toString();
+    }
+}