升级到最新版本

pom.xml

@@ -17,6 +17,8 @@
     <properties>
         <java.version>1.8</java.version>
         <mybatis.spring.version>1.2.4</mybatis.spring.version>
+        <mapper.starter.version>2.0.3-beta1</mapper.starter.version>
+        <pagehelper.starter.version>1.2.5</pagehelper.starter.version>
     </properties>
 
     <dependencies>
@@ -72,12 +74,6 @@
             <artifactId>jackson-module-parameter-names</artifactId>
         </dependency>
 
-        <dependency>
-            <groupId>com.alibaba</groupId>
-            <artifactId>druid</artifactId>
-            <version>1.0.11</version>
-        </dependency>
-
         <dependency>
             <groupId>org.mybatis.spring.boot</groupId>
             <artifactId>mybatis-spring-boot-starter</artifactId>
@@ -88,13 +84,13 @@
         <dependency>
             <groupId>tk.mybatis</groupId>
             <artifactId>mapper-spring-boot-starter</artifactId>
-            <version>2.0.2</version>
+            <version>${mapper.starter.version}</version>
         </dependency>
         <!--pagehelper-->
         <dependency>
             <groupId>com.github.pagehelper</groupId>
             <artifactId>pagehelper-spring-boot-starter</artifactId>
-            <version>1.2.5</version>
+            <version>${pagehelper.starter.version}</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.mybatis.spring.boot</groupId>

src/main/java/tk/mybatis/springboot/mapper/CountryMapper.java

@@ -24,9 +24,12 @@
 
 package tk.mybatis.springboot.mapper;
 
+import org.apache.ibatis.annotations.Select;
 import tk.mybatis.springboot.model.Country;
 import tk.mybatis.springboot.util.MyMapper;
 
 public interface CountryMapper extends MyMapper<Country> {
 
+    @Select("select * from country limit 1")
+    Country findOne();
 }

src/main/resources/application-dev.properties

@@ -1,6 +1,6 @@
 server.port=9090
 debug=true
-logging.level.root=debug
+logging.level.root=warn
 logging.level.tk.mybatis.springboot.mapper=trace
 spring.datasource.url=jdbc:mysql://localhost:3306/test
 spring.datasource.username=root