diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index f29510c..4dd3340 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,209 +1,40 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
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+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
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+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
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+      <path>
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+        <item name="GROUP_NODE:dependabot" type="e8cecc67:BranchNodeDescriptor" />
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+      <path>
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+        <item name="GROUP_NODE:dependabot" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:maven" type="e8cecc67:BranchNodeDescriptor" />
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-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_data_spring_data_keyvalue_1_2_4_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_data_spring_data_keyvalue_1_2_4_RELEASE.xml" afterDir="false" />
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-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_expression_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_expression_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_jdbc_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_jdbc_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_messaging_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_messaging_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_oxm_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_oxm_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_test_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_test_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_tx_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_tx_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_web_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_web_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_webmvc_4_3_9_RELEASE.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_springframework_spring_webmvc_4_3_9_RELEASE.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_xerial_snappy_snappy_java_1_1_2_4.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_xerial_snappy_snappy_java_1_1_2_4.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__org_yaml_snakeyaml_1_17.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__org_yaml_snakeyaml_1_17.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__redis_clients_jedis_2_9_0.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__redis_clients_jedis_2_9_0.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__stax_stax_api_1_0_1.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__stax_stax_api_1_0_1.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__tk_mybatis_mapper_3_5_2.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__tk_mybatis_mapper_3_5_2.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__tk_mybatis_mapper_spring_boot_autoconfigure_1_2_3.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__tk_mybatis_mapper_spring_boot_autoconfigure_1_2_3.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__tk_mybatis_mapper_spring_boot_starter_1_2_3.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__tk_mybatis_mapper_spring_boot_starter_1_2_3.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__xml_apis_xml_apis_1_4_01.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__xml_apis_xml_apis_1_4_01.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__xmlpull_xmlpull_1_1_3_1.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__xmlpull_xmlpull_1_1_3_1.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/.idea/libraries/Maven__xpp3_xpp3_min_1_1_4c.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/libraries/Maven__xpp3_xpp3_min_1_1_4c.xml" afterDir="false" />
+    <list default="true" id="3d7f6127-8c42-42d5-b658-b01b236c6903" name="Default" comment="ceshi">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/lean/java/example/utils/GisUtils.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/lean/java/example/utils/GisUtils.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/lean/java/example/Application.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/lean/java/example/Application.java" afterDir="false" />
     </list>
     <list id="ee5fcdad-dc07-4396-a0cd-e7bcf89ba6d3" name="New changelist" comment="" />
     <list id="28a85a9b-e03a-4575-a42c-b1a39ac5362f" name="New changelist1" comment="New changelist1" />
@@ -223,9 +54,6 @@
   <component name="DefaultGradleProjectSettings">
     <option name="isMigrated" value="true" />
   </component>
-  <component name="FavoritesManager">
-    <favorites_list name="lean-java-example" />
-  </component>
   <component name="FileTemplateManagerImpl">
     <option name="RECENT_TEMPLATES">
       <list>
@@ -253,35 +81,24 @@
   <component name="MavenImportPreferences">
     <option name="generalSettings">
       <MavenGeneralSettings>
-        <option name="localRepository" value="D:/apache-maven-3.6.0/resp" />
-        <option name="mavenHome" value="$APPLICATION_HOME_DIR$/plugins/maven/lib/maven3" />
-        <option name="userSettingsFile" value="D:/apache-maven-3.6.0/conf/settings.xml" />
+        <option name="mavenHome" value="$PROJECT_DIR$/../../apache-maven-3.6.3-bin/apache-maven-3.6.3" />
       </MavenGeneralSettings>
     </option>
-    <option name="importingSettings">
-      <MavenImportingSettings>
-        <option name="importAutomatically" value="true" />
-      </MavenImportingSettings>
-    </option>
   </component>
   <component name="MavenRunner">
     <option name="jreName" value="#JAVA_INTERNAL" />
   </component>
-  <component name="ProjectFrameBounds" fullScreen="true">
-    <option name="y" value="23" />
-    <option name="width" value="1280" />
-    <option name="height" value="777" />
-  </component>
   <component name="ProjectId" id="1ZBpdm8yg0gn4GUoY7m1xXe0XnC" />
   <component name="ProjectLevelVcsManager">
     <ConfirmationsSetting value="1" id="Add" />
   </component>
   <component name="ProjectViewState">
     <option name="hideEmptyMiddlePackages" value="true" />
-    <option name="showExcludedFiles" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
   <component name="PropertiesComponent">
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="RunOnceActivity.ShowReadmeOnStart" value="true" />
     <property name="SHARE_PROJECT_CONFIGURATION_FILES" value="true" />
     <property name="SearchEverywhereHistoryKey" value="ObjectOut&#9;PSI&#9;JAVA://java.io.ObjectOutputStream" />
     <property name="WebServerToolWindowFactoryState" value="false" />
@@ -293,7 +110,7 @@
     <property name="project.structure.last.edited" value="Facets" />
     <property name="project.structure.proportion" value="0.15" />
     <property name="project.structure.side.proportion" value="0.2" />
-    <property name="settings.editor.selected.configurable" value="editing.templates" />
+    <property name="settings.editor.selected.configurable" value="preferences.keymap" />
   </component>
   <component name="RecentsManager">
     <key name="MoveFile.RECENT_KEYS">
@@ -379,8 +196,6 @@
       <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
       <option name="FORCE_STOP_RUNNING_APP" value="true" />
       <option name="TARGET_SELECTION_MODE" value="SHOW_DIALOG" />
-      <option name="USE_LAST_SELECTED_DEVICE" value="false" />
-      <option name="PREFERRED_AVD" value="" />
       <option name="DEBUGGER_TYPE" value="Java" />
       <Java />
       <Profilers>
@@ -396,18 +211,17 @@
     </configuration>
     <configuration default="true" type="AndroidTestRunConfigurationType" factoryName="Android Instrumented Tests">
       <option name="TESTING_TYPE" value="0" />
-      <option name="INSTRUMENTATION_RUNNER_CLASS" value="" />
       <option name="METHOD_NAME" value="" />
       <option name="CLASS_NAME" value="" />
       <option name="PACKAGE_NAME" value="" />
+      <option name="INSTRUMENTATION_RUNNER_CLASS" value="" />
       <option name="EXTRA_OPTIONS" value="" />
+      <option name="INCLUDE_GRADLE_EXTRA_OPTIONS" value="true" />
       <option name="CLEAR_LOGCAT" value="false" />
       <option name="SHOW_LOGCAT_AUTOMATICALLY" value="true" />
       <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
       <option name="FORCE_STOP_RUNNING_APP" value="true" />
       <option name="TARGET_SELECTION_MODE" value="SHOW_DIALOG" />
-      <option name="USE_LAST_SELECTED_DEVICE" value="false" />
-      <option name="PREFERRED_AVD" value="" />
       <option name="DEBUGGER_TYPE" value="Java" />
       <Java />
       <Profilers>
@@ -542,7 +356,7 @@
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration default="true" type="KotlinStandaloneScriptRunConfigurationType" factoryName="Kotlin script">
+    <configuration default="true" type="KotlinStandaloneScriptRunConfigurationType">
       <option name="filePath" />
       <option name="vmParameters" />
       <option name="alternativeJrePath" />
@@ -616,9 +430,9 @@
       <item itemvalue="Application.LockSupportTest" />
       <item itemvalue="Application.Teacher" />
       <item itemvalue="Application.ReverseList" />
-      <item itemvalue="Spring Boot.application" />
       <item itemvalue="Application.ThreeThreadTest" />
       <item itemvalue="Application.ArrayTest" />
+      <item itemvalue="Spring Boot.application" />
     </list>
     <recent_temporary>
       <list>
@@ -671,6 +485,8 @@
       <workItem from="1583110052058" duration="2266000" />
       <workItem from="1584322434194" duration="3223000" />
       <workItem from="1584415625034" duration="4029000" />
+      <workItem from="1587438170919" duration="110000" />
+      <workItem from="1587438320443" duration="802000" />
     </task>
     <task id="LOCAL-00001" summary="三种设置模式设计模式">
       <created>1536230524747</created>
@@ -791,7 +607,14 @@
       <option name="project" value="LOCAL" />
       <updated>1584416381681</updated>
     </task>
-    <option name="localTasksCounter" value="18" />
+    <task id="LOCAL-00018" summary="ceshi">
+      <created>1587439044848</created>
+      <option name="number" value="00018" />
+      <option name="presentableId" value="LOCAL-00018" />
+      <option name="project" value="LOCAL" />
+      <updated>1587439044848</updated>
+    </task>
+    <option name="localTasksCounter" value="19" />
     <servers />
   </component>
   <component name="TestHistory">
@@ -815,7 +638,7 @@
     </history-entry>
   </component>
   <component name="TypeScriptGeneratedFilesManager">
-    <option name="version" value="1" />
+    <option name="version" value="2" />
   </component>
   <component name="Vcs.Log.History.Properties">
     <option name="COLUMN_ORDER">
@@ -827,6 +650,17 @@
       </list>
     </option>
   </component>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
   <component name="Vcs.Log.UiProperties">
     <option name="RECENTLY_FILTERED_USER_GROUPS">
       <collection />
@@ -855,7 +689,8 @@
     <MESSAGE value="算法7：插入排序" />
     <MESSAGE value="123" />
     <MESSAGE value="线程依次打印" />
-    <option name="LAST_COMMIT_MESSAGE" value="线程依次打印" />
+    <MESSAGE value="ceshi" />
+    <option name="LAST_COMMIT_MESSAGE" value="ceshi" />
   </component>
   <component name="WindowStateProjectService">
     <state x="453" y="123" key="#com.intellij.ide.util.MemberChooser" timestamp="1584323884944">
@@ -870,6 +705,10 @@
       <screen x="0" y="0" width="1280" height="800" />
     </state>
     <state width="417" height="618" key="DebuggerActiveHint/0.0.1280.800@0.0.1280.800" timestamp="1584431362500" />
+    <state x="471" y="110" key="FileChooserDialogImpl" timestamp="1587438940360">
+      <screen x="0" y="0" width="1920" height="1040" />
+    </state>
+    <state x="471" y="110" key="FileChooserDialogImpl/0.0.1920.1040@0.0.1920.1040" timestamp="1587438940360" />
     <state width="1238" height="158" key="GridCell.Tab.0.bottom" timestamp="1584431301190">
       <screen x="0" y="0" width="1280" height="800" />
     </state>
@@ -902,14 +741,16 @@
       <screen x="0" y="0" width="1280" height="800" />
     </state>
     <state width="1238" height="158" key="GridCell.Tab.1.right/0.0.1280.800@0.0.1280.800" timestamp="1584431301874" />
-    <state x="128" y="0" key="SettingsEditor" timestamp="1584416004188">
-      <screen x="0" y="0" width="1280" height="800" />
+    <state x="192" y="0" key="SettingsEditor" timestamp="1587439118842">
+      <screen x="0" y="0" width="1920" height="1040" />
     </state>
     <state x="128" y="0" key="SettingsEditor/0.0.1280.800@0.0.1280.800" timestamp="1584416004188" />
-    <state x="240" y="136" key="Vcs.Push.Dialog.v2" timestamp="1584416383063">
-      <screen x="0" y="0" width="1280" height="800" />
+    <state x="192" y="0" key="SettingsEditor/0.0.1920.1040@0.0.1920.1040" timestamp="1587439118842" />
+    <state x="360" y="177" key="Vcs.Push.Dialog.v2" timestamp="1587439047387">
+      <screen x="0" y="0" width="1920" height="1040" />
     </state>
     <state x="240" y="136" key="Vcs.Push.Dialog.v2/0.0.1280.800@0.0.1280.800" timestamp="1584416383063" />
+    <state x="360" y="177" key="Vcs.Push.Dialog.v2/0.0.1920.1040@0.0.1920.1040" timestamp="1587439047387" />
   </component>
   <component name="antWorkspaceConfiguration">
     <option name="IS_AUTOSCROLL_TO_SOURCE" value="false" />
diff --git a/src/main/java/lean/java/example/Application.java b/src/main/java/lean/java/example/Application.java
index 7986f3c..054018f 100644
--- a/src/main/java/lean/java/example/Application.java
+++ b/src/main/java/lean/java/example/Application.java
@@ -10,5 +10,6 @@
 public class Application {
     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
+        String.valueOf(1);
     }
 }