diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index f042c63..c036b84 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,58 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="ALL" />
+  </component>
   <component name="ChangeListManager">
     <list default="true" id="a7505764-040b-48e2-b2fc-8c5b579e595f" name="Default" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" afterPath="$PROJECT_DIR$/.idea/workspace.xml" />
-      <change beforePath="$PROJECT_DIR$/README.md" afterPath="$PROJECT_DIR$/README.md" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/cn/edu/hust/dao/impl/SessionAggrStatDaoImpl.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/cn/edu/hust/dao/impl/SessionAggrStatDaoImpl.java" afterDir="false" />
     </list>
-    <ignored path="$PROJECT_DIR$/out/" />
-    <ignored path="$PROJECT_DIR$/target/" />
-    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
-    <option name="TRACKING_ENABLED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
-  <component name="FileEditorManager">
-    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file leaf-file-name="UserVisitAnalyze.java" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/src/main/java/cn/edu/hust/session/UserVisitAnalyze.java">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="-377">
-              <caret line="972" column="29" lean-forward="false" selection-start-line="972" selection-start-column="29" selection-end-line="972" selection-end-column="29" />
-              <folding>
-                <element signature="imports" expanded="true" />
-              </folding>
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="MockData.java" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/src/main/java/cn/edu/hust/mockData/MockData.java">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="1482">
-              <caret line="93" column="50" lean-forward="false" selection-start-line="93" selection-start-column="50" selection-end-line="93" selection-end-column="50" />
-              <folding />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="README.md" pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/README.md">
-          <provider selected="true" editor-type-id="split-provider[text-editor;markdown-preview-editor]">
-            <state split_layout="FIRST">
-              <first_editor relative-caret-position="703">
-                <caret line="448" column="0" lean-forward="false" selection-start-line="448" selection-start-column="0" selection-end-line="448" selection-end-column="0" />
-                <folding />
-              </first_editor>
-              <second_editor />
-            </state>
-          </provider>
-        </entry>
-      </file>
-    </leaf>
-  </component>
   <component name="FileTemplateManagerImpl">
     <option name="RECENT_TEMPLATES">
       <list>
@@ -69,6 +29,11 @@
     </findStrings>
   </component>
   <component name="Git.Settings">
+    <option name="RECENT_BRANCH_BY_REPOSITORY">
+      <map>
+        <entry key="$PROJECT_DIR$" value="master" />
+      </map>
+    </option>
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
   </component>
   <component name="GradleLocalSettings">
@@ -142,11 +107,6 @@
         <option name="pluginUpdatePolicy" value="UPDATE" />
       </MavenGeneralSettings>
     </option>
-    <option name="importingSettings">
-      <MavenImportingSettings>
-        <option name="importAutomatically" value="true" />
-      </MavenImportingSettings>
-    </option>
   </component>
   <component name="MavenRunner">
     <option name="jreName" value="#JAVA_INTERNAL" />
@@ -157,6 +117,7 @@
     <option name="width" value="1440" />
     <option name="height" value="873" />
   </component>
+  <component name="ProjectId" id="2qFmyUeLqXE2TA1QwpmrV8wy9zP" />
   <component name="ProjectInspectionProfilesVisibleTreeState">
     <entry key="Project Default">
       <profile-state>
@@ -278,6 +239,10 @@
       <pane id="AndroidView" />
     </panes>
   </component>
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
   <component name="PropertiesComponent">
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="nodejs_npm_path_reset_for_default_project" value="true" />
@@ -299,18 +264,6 @@
       <recent name="$PROJECT_DIR$/src/main/java/cn/edu/hust/until" />
     </key>
   </component>
-  <component name="RunDashboard">
-    <option name="ruleStates">
-      <list>
-        <RuleState>
-          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
-        </RuleState>
-        <RuleState>
-          <option name="name" value="StatusDashboardGroupingRule" />
-        </RuleState>
-      </list>
-    </option>
-  </component>
   <component name="RunManager" selected="Application.UserVisitAnalyze">
     <configuration default="true" type="Applet" factoryName="Applet">
       <option name="HTML_USED" value="false" />
@@ -320,218 +273,136 @@
       <module />
     </configuration>
     <configuration name="UserVisitAnalyze" type="Application" factoryName="Application" temporary="true" nameIsGenerated="true">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea">
+      <option name="MAIN_CLASS_NAME" value="cn.edu.hust.session.UserVisitAnalyze" />
+      <module name="UserActionAnalyzePlatform" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <extension name="coverage">
         <pattern>
           <option name="PATTERN" value="cn.edu.hust.session.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <option name="MAIN_CLASS_NAME" value="cn.edu.hust.session.UserVisitAnalyze" />
-      <option name="VM_PARAMETERS" />
-      <option name="PROGRAM_PARAMETERS" />
-      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
-      <option name="ENABLE_SWING_INSPECTOR" value="false" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <module name="UserActionAnalyzePlatform" />
-      <envs />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
     <configuration default="true" type="Application" factoryName="Application">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
-      <option name="MAIN_CLASS_NAME" />
-      <option name="VM_PARAMETERS" />
-      <option name="PROGRAM_PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
-      <option name="ENABLE_SWING_INSPECTOR" value="false" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <module name="" />
-      <envs />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
     <configuration name="ParamUtilsTest.test2" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea">
+      <module name="UserActionAnalyzePlatform" />
+      <extension name="coverage">
         <pattern>
           <option name="PATTERN" value="cn.edu.hust.utils.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <module name="UserActionAnalyzePlatform" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="cn.edu.hust.utils" />
       <option name="MAIN_CLASS_NAME" value="cn.edu.hust.utils.ParamUtilsTest" />
       <option name="METHOD_NAME" value="test2" />
       <option name="TEST_OBJECT" value="method" />
-      <option name="VM_PARAMETERS" value="-ea" />
-      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <option name="TEST_SEARCH_SCOPE">
-        <value defaultName="singleModule" />
-      </option>
-      <envs />
-      <patterns />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
     <configuration name="SessionAggrDao.test" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea">
+      <module name="UserActionAnalyzePlatform" />
+      <extension name="coverage">
         <pattern>
           <option name="PATTERN" value="cn.edu.hust.dao.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <module name="UserActionAnalyzePlatform" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="cn.edu.hust.dao" />
       <option name="MAIN_CLASS_NAME" value="cn.edu.hust.dao.SessionAggrDao" />
       <option name="METHOD_NAME" value="test" />
       <option name="TEST_OBJECT" value="method" />
-      <option name="VM_PARAMETERS" value="-ea" />
-      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <option name="TEST_SEARCH_SCOPE">
-        <value defaultName="singleModule" />
-      </option>
-      <envs />
-      <patterns />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
     <configuration name="SessionDetailTest.testInsert" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea">
+      <module name="UserActionAnalyzePlatform" />
+      <extension name="coverage">
         <pattern>
           <option name="PATTERN" value="cn.edu.hust.dao.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <module name="UserActionAnalyzePlatform" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="cn.edu.hust.dao" />
       <option name="MAIN_CLASS_NAME" value="cn.edu.hust.dao.SessionDetailTest" />
       <option name="METHOD_NAME" value="testInsert" />
       <option name="TEST_OBJECT" value="method" />
-      <option name="VM_PARAMETERS" value="-ea" />
-      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <option name="TEST_SEARCH_SCOPE">
-        <value defaultName="singleModule" />
-      </option>
-      <envs />
-      <patterns />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
     <configuration name="SessionRandomExtractDaoTest.testBatchInsert" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea">
+      <module name="UserActionAnalyzePlatform" />
+      <extension name="coverage">
         <pattern>
           <option name="PATTERN" value="cn.edu.hust.dao.*" />
           <option name="ENABLED" value="true" />
         </pattern>
       </extension>
-      <module name="UserActionAnalyzePlatform" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
       <option name="PACKAGE_NAME" value="cn.edu.hust.dao" />
       <option name="MAIN_CLASS_NAME" value="cn.edu.hust.dao.SessionRandomExtractDaoTest" />
       <option name="METHOD_NAME" value="testBatchInsert" />
       <option name="TEST_OBJECT" value="method" />
-      <option name="VM_PARAMETERS" value="-ea" />
-      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <option name="TEST_SEARCH_SCOPE">
-        <value defaultName="singleModule" />
-      </option>
-      <envs />
-      <patterns />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
     <configuration default="true" type="JUnit" factoryName="JUnit">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
-      <module name="" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
-      <option name="PACKAGE_NAME" />
-      <option name="MAIN_CLASS_NAME" />
-      <option name="METHOD_NAME" />
       <option name="TEST_OBJECT" value="class" />
-      <option name="VM_PARAMETERS" value="-ea" />
-      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <option name="TEST_SEARCH_SCOPE">
-        <value defaultName="singleModule" />
-      </option>
-      <envs />
-      <patterns />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
-    <configuration default="true" type="Remote" factoryName="Remote">
-      <option name="USE_SOCKET_TRANSPORT" value="true" />
-      <option name="SERVER_MODE" value="false" />
-      <option name="SHMEM_ADDRESS" value="javadebug" />
-      <option name="HOST" value="localhost" />
-      <option name="PORT" value="5005" />
-    </configuration>
-    <configuration default="true" type="TestNG" factoryName="TestNG">
-      <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
-      <module name="" />
-      <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="false" />
-      <option name="ALTERNATIVE_JRE_PATH" />
-      <option name="SUITE_NAME" />
-      <option name="PACKAGE_NAME" />
-      <option name="MAIN_CLASS_NAME" />
-      <option name="METHOD_NAME" />
-      <option name="GROUP_NAME" />
+    <configuration default="true" type="TestNG">
       <option name="TEST_OBJECT" value="CLASS" />
-      <option name="VM_PARAMETERS" value="-ea" />
-      <option name="PARAMETERS" />
       <option name="WORKING_DIRECTORY" value="%MODULE_WORKING_DIR%" />
-      <option name="OUTPUT_DIRECTORY" />
-      <option name="ANNOTATION_TYPE" />
-      <option name="ENV_VARIABLES" />
-      <option name="PASS_PARENT_ENVS" value="true" />
-      <option name="TEST_SEARCH_SCOPE">
-        <value defaultName="singleModule" />
-      </option>
-      <option name="USE_DEFAULT_REPORTERS" value="false" />
-      <option name="PROPERTIES_FILE" />
-      <envs />
       <properties />
       <listeners />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
-    <configuration default="true" type="#org.jetbrains.idea.devkit.run.PluginConfigurationType" factoryName="Plugin">
+    <configuration default="true" type="#org.jetbrains.idea.devkit.run.PluginConfigurationType">
       <module name="" />
       <option name="VM_PARAMETERS" value="-Xmx512m -Xms256m -XX:MaxPermSize=250m -ea" />
       <option name="PROGRAM_PARAMETERS" />
-      <predefined_log_file id="idea.log" enabled="true" />
+      <predefined_log_file enabled="true" id="idea.log" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
     </configuration>
-    <list size="5">
-      <item index="0" class="java.lang.String" itemvalue="Application.UserVisitAnalyze" />
-      <item index="1" class="java.lang.String" itemvalue="JUnit.ParamUtilsTest.test2" />
-      <item index="2" class="java.lang.String" itemvalue="JUnit.SessionAggrDao.test" />
-      <item index="3" class="java.lang.String" itemvalue="JUnit.SessionDetailTest.testInsert" />
-      <item index="4" class="java.lang.String" itemvalue="JUnit.SessionRandomExtractDaoTest.testBatchInsert" />
+    <list>
+      <item itemvalue="Application.UserVisitAnalyze" />
+      <item itemvalue="JUnit.ParamUtilsTest.test2" />
+      <item itemvalue="JUnit.SessionAggrDao.test" />
+      <item itemvalue="JUnit.SessionDetailTest.testInsert" />
+      <item itemvalue="JUnit.SessionRandomExtractDaoTest.testBatchInsert" />
     </list>
     <recent_temporary>
-      <list size="5">
-        <item index="0" class="java.lang.String" itemvalue="Application.UserVisitAnalyze" />
-        <item index="1" class="java.lang.String" itemvalue="JUnit.SessionRandomExtractDaoTest.testBatchInsert" />
-        <item index="2" class="java.lang.String" itemvalue="JUnit.SessionDetailTest.testInsert" />
-        <item index="3" class="java.lang.String" itemvalue="JUnit.SessionAggrDao.test" />
-        <item index="4" class="java.lang.String" itemvalue="JUnit.ParamUtilsTest.test2" />
+      <list>
+        <item itemvalue="Application.UserVisitAnalyze" />
+        <item itemvalue="JUnit.SessionRandomExtractDaoTest.testBatchInsert" />
+        <item itemvalue="JUnit.SessionDetailTest.testInsert" />
+        <item itemvalue="JUnit.SessionAggrDao.test" />
+        <item itemvalue="JUnit.ParamUtilsTest.test2" />
       </list>
     </recent_temporary>
   </component>
-  <component name="ShelveChangesManager" show_recycled="false">
-    <option name="remove_strategy" value="false" />
-  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
   <component name="SvnConfiguration">
     <configuration />
   </component>
@@ -551,6 +422,7 @@
       <workItem from="1529845795654" duration="7752000" />
       <workItem from="1529887211212" duration="6851000" />
       <workItem from="1529994772485" duration="146000" />
+      <workItem from="1734266959001" duration="714000" />
     </task>
     <task id="LOCAL-00001" summary="1.环境搭建完成&#10;2.相关的工具类编写完成&#10;3.配置文件管理类编写完成">
       <created>1529592741848</created>
@@ -669,47 +541,24 @@
     </layout-to-restore>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
-    <option name="version" value="1" />
+    <option name="version" value="3" />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
     <option name="TAB_STATES">
       <map>
         <entry key="MAIN">
           <value>
-            <State>
-              <option name="RECENTLY_FILTERED_USER_GROUPS">
-                <collection />
-              </option>
-              <option name="RECENTLY_FILTERED_BRANCH_GROUPS">
-                <collection />
-              </option>
-              <option name="COLUMN_ORDER">
-                <list>
-                  <option value="0" />
-                  <option value="1" />
-                  <option value="2" />
-                  <option value="3" />
-                </list>
-              </option>
-            </State>
+            <State />
           </value>
         </entry>
       </map>
     </option>
-  </component>
-  <component name="VcsContentAnnotationSettings">
-    <option name="myLimit" value="2678400000" />
+    <option name="oldMeFiltersMigrated" value="true" />
   </component>
   <component name="VcsManagerConfiguration">
     <MESSAGE value="1.环境搭建完成&#10;2.相关的工具类编写完成&#10;3.配置文件管理类编写完成" />
     <option name="LAST_COMMIT_MESSAGE" value="1.环境搭建完成&#10;2.相关的工具类编写完成&#10;3.配置文件管理类编写完成" />
   </component>
-  <component name="XDebuggerManager">
-    <breakpoint-manager>
-      <option name="time" value="32" />
-    </breakpoint-manager>
-    <watches-manager />
-  </component>
   <component name="editorHistoryManager">
     <entry file="file://$PROJECT_DIR$/src/main/java/cn/edu/hust/conf/ConfigurationManager.java">
       <provider selected="true" editor-type-id="text-editor">
diff --git a/src/main/java/cn/edu/hust/dao/impl/SessionAggrStatDaoImpl.java b/src/main/java/cn/edu/hust/dao/impl/SessionAggrStatDaoImpl.java
index 23d21a1..6ec95da 100644
--- a/src/main/java/cn/edu/hust/dao/impl/SessionAggrStatDaoImpl.java
+++ b/src/main/java/cn/edu/hust/dao/impl/SessionAggrStatDaoImpl.java
@@ -6,7 +6,7 @@ import cn.edu.hust.jdbc.JDBCHelper;
 
 import java.util.ArrayList;
 import java.util.List;
-
+//创建1
 public class SessionAggrStatDaoImpl implements SessionAggrStatDao{
     @Override
     public void insert(SessionAggrStat sessionAggrStat) {