diff --git a/code/java/天气灾害预警/disaster_warning.iml b/code/java/天气灾害预警/disaster_warning.iml
index 93e5b3b..1862bd3 100644
--- a/code/java/天气灾害预警/disaster_warning.iml
+++ b/code/java/天气灾害预警/disaster_warning.iml
@@ -34,14 +34,5 @@
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-core:2.9.8" level="project" />
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-databind:2.9.8" level="project" />
     <orderEntry type="library" name="Maven: com.fasterxml.jackson.core:jackson-annotations:2.9.8" level="project" />
-    <orderEntry type="module-library">
-      <library name="Maven: com.oracle:ojdbc8:12.2.0.1">
-        <CLASSES>
-          <root url="jar://$MODULE_DIR$/lib/ojdbc8.jar!/" />
-        </CLASSES>
-        <JAVADOC />
-        <SOURCES />
-      </library>
-    </orderEntry>
   </component>
 </module>
\ No newline at end of file
diff --git a/code/java/天气灾害预警/disaster_warning.ipr b/code/java/天气灾害预警/disaster_warning.ipr
index ac62426..6c063bb 100644
--- a/code/java/天气灾害预警/disaster_warning.ipr
+++ b/code/java/天气灾害预警/disaster_warning.ipr
@@ -21,6 +21,8 @@
     </bytecodeTargetLevel>
   </component>
   <component name="Encoding" native2AsciiForPropertiesFiles="true" defaultCharsetForPropertiesFiles="UTF-8">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
     <file url="PROJECT" charset="UTF-8" />
   </component>
   <component name="ExportToHTMLSettings">
diff --git a/code/java/天气灾害预警/pom.xml b/code/java/天气灾害预警/pom.xml
index 91ec2d8..76c2a4e 100644
--- a/code/java/天气灾害预警/pom.xml
+++ b/code/java/天气灾害预警/pom.xml
@@ -62,17 +62,13 @@
             <artifactId>jackson-annotations</artifactId>
             <version>2.9.8</version>
         </dependency>
-        <dependency>
-            <groupId>com.oracle</groupId>
-             <artifactId>ojdbc8</artifactId>
-             <version>12.2.0.1</version>
-             <scope>system</scope>
-             <systemPath>${basedir}/lib/ojdbc8.jar</systemPath>
-        </dependency>
     </dependencies>
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.encoding>UTF-8</maven.compiler.encoding>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     </properties>
     <build>
         <defaultGoal>compile</defaultGoal>