计算准确率通用方法修改

pom.xml

@@ -64,6 +64,12 @@
             <version>RELEASE</version>
             <scope>compile</scope>
         </dependency>
+        <!--fast json 版本-->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.69</version>
+        </dependency>
     </dependencies>
 
     <build>