删除独立的作者、出版社、缩略图表；修正部分字段；实现部分Service以及Controller；项目框架基本建立

bookshelfplus/src/main/java/plus/bookshelf/App.java

@@ -1,23 +1,24 @@
 package plus.bookshelf;
 
 import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 /**
  * Hello world!
- *
  */
-@SpringBootApplication(scanBasePackages = { "plus.bookshelf" })
+@SpringBootApplication(scanBasePackages = {"plus.bookshelf"})
 @RestController
-@MapperScan("plus.bookshelf.mapper")
-public class App 
-{
-    public static void main( String[] args )
-    {
-        System.out.println( "Hello World!" );
+@MapperScan("plus.bookshelf.Dao.Mapper")
+public class App {
+    public static void main(String[] args) {
+        System.out.println("Dreams remain daydreams until they are put into action. \n" +
+                "Now, let's start.");
 
+        // 启动SpringBoot项目
+        SpringApplication.run(App.class, args);
     }
 
     @RequestMapping("/")