Error starting Tomcat context with Spring-Boot: java.lang.ClassNotFoundException: org.apache.tomcat.dbcp.dbcp.BasicDataSource

问题:

I recently decide add spring-boot to a existing spring project which uses hibernate configured by java code. I have this pom.xml file:

<?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>com.spring</groupId>     <artifactId>app</artifactId>     <version>0.1.0</version>      <parent>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-parent</artifactId>         <version>1.1.8.RELEASE</version>     </parent>      <dependencies>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-web</artifactId>         </dependency>         <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-actuator</artifactId>         </dependency>         <dependency>             <groupId>org.springframework.security</groupId>             <artifactId>spring-security-web</artifactId>             </dependency>         <dependency>             <groupId>org.springframework.security</groupId>             <artifactId>spring-security-config</artifactId>             </dependency>         <dependency>             <groupId>org.springframework.security</groupId>             <artifactId>spring-security-taglibs</artifactId>             </dependency>         <dependency>            <groupId>org.hibernate</groupId>            <artifactId>hibernate-core</artifactId>            <version>4.3.6.Final</version>         </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-orm</artifactId>             </dependency>         <dependency>             <groupId>org.springframework</groupId>             <artifactId>spring-tx</artifactId>             </dependency>     </dependencies>      <properties>         <start-class>com.spring.app.Application</start-class>     </properties>      <build>         <plugins>             <plugin>                 <groupId>org.springframework.boot</groupId>                 <artifactId>spring-boot-maven-plugin</artifactId>             </plugin>         </plugins>     </build>  </project> 

When I try run the applications (after the commands: mvn compile / mvn package / java -jar ), I get this error:

Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.dbcp.dbcp.BasicDataSource     at java.net.URLClassLoader$1.run(URLClassLoader.java:366)     at java.net.URLClassLoader$1.run(URLClassLoader.java:355)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader.findClass(URLClassLoader.java:354)     at java.lang.ClassLoader.loadClass(ClassLoader.java:425)     at org.springframework.boot.loader.LaunchedURLClassLoader.doLoadClass(LaunchedURLClassLoader.java:168)     at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:134)     at java.lang.ClassLoader.loadClass(ClassLoader.java:358)     ... 136 common frames omitted 

anyone can tell me what I am missing here?

回答1:

You are missing data source dependency. You can resolve it by either adding DBCP dependency or you can replace your spring-tx, spring-orm and hibernate-core dependencies with spring-boot-starter-data-jpa and you should have all the persistence dependencies you need in your Spring Boot project:

<dependency>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> 

回答2:

Following the two answers posted here (one was deleted), I add this two dependencies to my pom.xml:

    <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-data-jpa</artifactId>     </dependency>     <dependency>         <groupId>commons-dbcp</groupId>         <artifactId>commons-dbcp</artifactId>     </dependency> 

and remove this three:

   <dependency>        <groupId>org.hibernate</groupId>        <artifactId>hibernate-core</artifactId>        <version>4.3.6.Final</version>     </dependency>     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-orm</artifactId>         </dependency>     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-tx</artifactId>         </dependency> 

and this solve the problem.

文章来源: Error starting Tomcat context with Spring-Boot: java.lang.ClassNotFoundException: org.apache.tomcat.dbcp.dbcp.BasicDataSource