SpringBoot-启动报错（Error starting ApplicationContext）

小鱼儿 2023-06-26 05:37 143阅读 0赞

搭建SpringBoot+mybatis+maven集成项目，在运行启动类main函数的时候控制台报出如下错误，启动失败：

  1. Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 
  2.    2018- 07- 18 16: 57: 29.514 ERROR 17300 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter : 
  4.    *************************** 
  5.    APPLICATION FAILED TO START 
  6.    *************************** 
  8.    Description: 
  10.    Cannot determine embedded database driver class for database type NONE 
  12.    Action: 
  14.    If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it ( no profiles are currently active).

报错的原因很明显，是我的项目有需要操作数据库的业务，但是数据库配置文件找不到导致数据类型报NONE值。

我的pom.xml配置：

  1. <?xml version= "1.0" encoding= "UTF-8"?> 
  3.    <project xmlns= "http://maven.apache.org/POM/4.0.0" xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" 
  4.    xsi:schemaLocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
  5.    <modelVersion> 4.0.0</modelVersion> 
  7.    <groupId>SpringBoot</groupId> 
  8.    <artifactId>SpringBoot</artifactId> 
  9.    <version> 0.0.1-SNAPSHOT</version> 
  10.    <packaging>war</packaging> 
  11.    <name>SpringBoot Maven Webapp</name> 
  12.    <url>http: //maven.apache.org</url> 
  14.    <properties> 
  15.    <project.build.sourceEncoding>UTF- 8</project.build.sourceEncoding> 
  16.    <maven.compiler.source> 1.7</maven.compiler.source> 
  17.    <maven.compiler.target> 1.7</maven.compiler.target> 
  18.    </properties> 
  20.    <parent> 
  21.    <groupId>org.springframework.boot</groupId> 
  22.    <artifactId>spring-boot-starter-parent</artifactId> 
  23.    <version> 1.5.8.RELEASE</version> 
  24.    <relativePath></relativePath> 
  25.    </parent> 
  27.    <resources> 
  28.    <resource> 
  29.    <directory>src/main/java</directory> 
  30.    <includes> 
  31.    <include>** /*.properties</include> 
  32.    <include>**/*.xml</include> 
  33.    </includes> 
  34.    <filtering> false</filtering> 
  35.    </resource> 
  36.    <resource> 
  37.    <directory>src/main/resources</directory> 
  38.    <includes> 
  39.    <include>** /*.properties</include> 
  40.    <include>**/*.xml</include> 
  41.    </includes> 
  42.    <filtering> false</filtering> 
  43.    </resource> 
  44.    </resources> 
  48.    <dependencies> 
  50.    <dependency> 
  51.    <groupId>org.springframework.boot</groupId> 
  52.    <artifactId>spring-boot-starter</artifactId> 
  53.    </dependency> 
  54.    <dependency> 
  55.    <groupId>org.mybatis.spring.boot</groupId> 
  56.    <artifactId>mybatis-spring-boot-starter</artifactId> 
  57.    <version> 1.3.1</version> 
  58.    </dependency> 
  59.    <dependency> 
  60.    <groupId>org.springframework.boot</groupId> 
  61.    <artifactId>spring-boot-devtools</artifactId> 
  62.    <optional> true</optional> 
  63.    </dependency> 
  64.    <dependency> 
  65.    <groupId>org.springframework.boot</groupId> 
  66.    <artifactId>spring-boot-starter-web</artifactId> 
  67.    </dependency> 
  68.    <dependency> 
  69.    <groupId>org.springframework.boot</groupId> 
  70.    <artifactId>spring-boot-starter-test</artifactId> 
  71.    <scope>test</scope> 
  72.    </dependency> 
  73.    <dependency> 
  74.    <groupId>org.springframework.boot</groupId> 
  75.    <artifactId>spring-boot-starter-jdbc</artifactId> 
  76.    </dependency> 
  77.    <dependency> 
  78.    <groupId>org.springframework.boot</groupId> 
  79.    <artifactId>spring-boot-starter-tomcat</artifactId> 
  80.    <scope>provided</scope> 
  81.    </dependency> 
  82.    <exclusions> 
  83.    <exclusion> 
  84.    <artifactId>log4j-over-slf4j</artifactId> 
  85.    <groupId>org.slf4j</groupId> 
  86.    </exclusion> 
  87.    <exclusion> 
  88.    <groupId>org.springframework.boot</groupId> 
  89.    <artifactId>spring-boot-starter-tomcat</artifactId> 
  90.    </exclusion> 
  91.    </exclusions> 
  92.    <!-- mysql连接 --> 
  93.    <dependency> 
  94.    <groupId>mysql</groupId> 
  95.    <artifactId>mysql-connector-java</artifactId> 
  96.    <version> 5.1.42</version> 
  97.    </dependency> 
  98.    <!-- mybatis --> 
  99.    </dependencies> 
  101.    <build> 
  102.    <finalName>SpringBoot</finalName> 
  103.    <pluginManagement><!-- lock down plugins versions to avoid using Maven 
  104.    defaults (may be moved to parent pom) --> 
  105.    <plugins> 
  106.    <plugin> 
  107.    <groupId>org.springframework.boot</groupId> 
  108.    <artifactId>spring-boot-maven-plugin</artifactId> 
  109.    <configuration> 
  110.    <fork>true</fork> 
  111.    </configuration> 
  112.    </plugin> 
  113.    <plugin> 
  114.    <artifactId>maven-clean-plugin</artifactId> 
  115.    <version>3.0.0</version> 
  116.    </plugin> 
  117.    <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> 
  118.    <plugin> 
  119.    <artifactId>maven-resources-plugin</artifactId> 
  120.    <version>3.0.2</version> 
  121.    </plugin> 
  122.    <plugin> 
  123.    <artifactId>maven-compiler-plugin</artifactId> 
  124.    <version>3.7.0</version> 
  125.    </plugin> 
  126.    <plugin> 
  127.    <artifactId>maven-surefire-plugin</artifactId> 
  128.    <version>2.20.1</version> 
  129.    </plugin> 
  130.    <plugin> 
  131.    <artifactId>maven-war-plugin</artifactId> 
  132.    <version>3.2.0</version> 
  133.    </plugin> 
  134.    <plugin> 
  135.    <artifactId>maven-install-plugin</artifactId> 
  136.    <version>2.5.2</version> 
  137.    </plugin> 
  138.    <plugin> 
  139.    <artifactId>maven-deploy-plugin</artifactId> 
  140.    <version>2.8.2</version> 
  141.    </plugin> 
  142.    <!--This plugin's configuration is used to store Eclipse m2e settings 
  143.    only. It has no influence on the Maven build itself. --> 
  144.    <plugin> 
  145.    <groupId>org.eclipse.m2e</groupId> 
  146.    <artifactId>lifecycle-mapping</artifactId> 
  147.    <version>1.0.0</version> 
  148.    <configuration> 
  149.    <lifecycleMappingMetadata> 
  150.    <pluginExecutions> 
  151.    <pluginExecution> 
  152.    <pluginExecutionFilter> 
  153.    <groupId> 
  154.    org.apache.maven.plugins 
  155.    </groupId> 
  156.    <artifactId> 
  157.    maven-resources-plugin 
  158.    </artifactId> 
  159.    <versionRange>[3.0.2,)</versionRange> 
  160.    <goals> 
  161.    <goal>resources</goal> 
  162.    </goals> 
  163.    </pluginExecutionFilter> 
  164.    <action> 
  165.    <ignore></ignore> 
  166.    </action> 
  167.    </pluginExecution> 
  168.    </pluginExecutions> 
  169.    </lifecycleMappingMetadata> 
  170.    </configuration> 
  171.    </plugin> 
  172.    </plugins> 
  173.    </pluginManagement> 
  174.    </build> 
  175.    </project>

项目完整路径：

70

很奇怪，我将配置文件全部放在resources文件夹下，官方文档也建议将配置文件放在此文件夹下，但是就是找不到我的数据库配置文件，具体原因暂时还不明白。

解决方法：将数据库配置文件（我的是上图resources文件夹下的application.properties）复制到src/java/main目录下，复制后路径如下图所示：

70 1

其中resources目录下的application.properties文件可以删除了。

上述操作后成功启动项目，问题解决。

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