fix online server exception

Author: wing328

modules/openapi-generator-online/pom.xml

@@ -18,6 +18,7 @@
         <spring-boot-version>2.0.7.RELEASE</spring-boot-version>
         <springfox-version>2.8.0</springfox-version>
         <junit-version>4.13</junit-version>
+        <jackson-version>2.10.2</jackson-version>
     </properties>
     <dependencyManagement>
         <dependencies>
@@ -117,6 +118,12 @@
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jsr310</artifactId>
+            <version>${jackson-version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>${jackson-version}</version>
         </dependency>
         <!-- Bean Validation API support -->
         <dependency>

modules/openapi-generator/pom.xml

@@ -232,7 +232,7 @@
         <diffutils-version>1.3.0</diffutils-version>
         <guava-version>26.0-jre</guava-version>
         <generex-version>1.0.2</generex-version>
-        <jackson-version>2.10.1</jackson-version>
+        <jackson-version>2.10.2</jackson-version>
         <jackson-threetenbp-version>2.10.0</jackson-threetenbp-version>
         <kotlin-version>1.3.60</kotlin-version>
     </properties>

pom.xml

@@ -1596,7 +1596,7 @@
         <commons-io-version>2.4</commons-io-version>
         <commons-cli-version>1.2</commons-cli-version>
         <junit-version>4.13</junit-version>
-        <jackson-version>2.8.9</jackson-version>
+        <jackson-version>2.10.2</jackson-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
         <commons-lang-version>3.4</commons-lang-version>
         <slf4j-version>1.7.12</slf4j-version>