fixed compiler java 1.7

example/pom.xml

@@ -21,11 +21,6 @@
 			<artifactId>canal.protocol</artifactId>
 			<version>${project.version}</version>
 		</dependency>
-		<dependency>
-			<groupId>com.alibaba.otter</groupId>
-			<artifactId>canal.instance.spring</artifactId>
-			<version>${project.version}</version>
-		</dependency>
 		<dependency>
 			<groupId>org.apache.ddlutils</groupId>
 			<artifactId>ddlutils</artifactId>
@@ -135,14 +130,6 @@
 					<attach>false</attach>
 				</configuration>
 			</plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<configuration>
-					<source>7</source>
-					<target>7</target>
-				</configuration>
-			</plugin>
 		</plugins>
 	</build>
 

pom.xml

@@ -96,8 +96,8 @@
         <maven.test.skip>true</maven.test.skip>
         <downloadSources>true</downloadSources>
         <!-- compiler settings properties -->
-        <java_source_version>1.6</java_source_version>
-        <java_target_version>1.6</java_target_version>
+        <java_source_version>1.7</java_source_version>
+        <java_target_version>1.7</java_target_version>
         <file_encoding>UTF-8</file_encoding>
         <spring_version>3.2.9.RELEASE</spring_version>
     </properties>
@@ -332,7 +332,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.2</version>
+                <version>3.8.0</version>
                 <configuration>
                     <source>${java_source_version}</source>
                     <target>${java_target_version}</target>