小编jus*_*tus的帖子

关于如何访问mysql数据,我在启动spring指南时遇到了一些问题(请参阅此链接:https://spring.io/guides/gs/accessing-data-mysql/).我稍微调整了类,所以我有这个代码:

1. 的pom.xml

   <?xml version="1.0" encoding="UTF-8"?>
   <project xmlns="http://maven.apache.org/POM/4.0.0"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0      http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <modelVersion>4.0.0</modelVersion>
   
       <groupId>org.springframework</groupId>
       <artifactId>gs-mysql-data</artifactId>
       <version>0.1.0</version>
   
       <parent>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-parent</artifactId>
   <version>1.5.6.RELEASE</version>
   </parent>
   
   <dependencies>
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   
   <!-- JPA Data (We are going to use Repositories, Entities, Hibernate, etc...) -->
   
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-data-jpa</artifactId>
   </dependency>
   
   <!-- Use MySQL Connector-J -->
   
   <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
   </dependency>
   
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-test</artifactId>
       <scope>test</scope>
   </dependency>
   
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-jdbc</artifactId>
   </dependency>
   </dependencies>
   
   <properties>
       <java.version>1.8</java.version>
   </properties>
   
   <build>
   <plugins>
       <plugin>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-maven-plugin</artifactId>
       </plugin>
   </plugins>
   </build>
   

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我正在使用这个mainController: MainController.java

import org.springframework.beans.factory.annotation.Autowired;
import …