新增flexJson依赖

pom.xml

@@ -38,7 +38,12 @@
             <version>4.4</version>
         </dependency>
 
-        <!-- spring boot -->
+        <dependency>
+            <groupId>net.sf.flexjson</groupId>
+            <artifactId>flexjson</artifactId>
+            <version>3.3</version>
+        </dependency>
+
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-actuator</artifactId>