springboot 使用spring-boot-devtools热部署后DataSource注入失败

一天一丢丢 2018-04-26 05:32:47

我用的是eeclipse maven项目配置的springboot。依赖文件如下（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>com.xf</groupId>

	<artifactId>code</artifactId>

	<version>0.0.1-SNAPSHOT</version>

	<packaging>jar</packaging>



	<name>SSMJ</name>

	<description>Demo project for Spring Boot</description>



	<parent>

		<groupId>org.springframework.boot</groupId>

		<artifactId>spring-boot-starter-parent</artifactId>

		<version>2.0.1.RELEASE</version>

		<relativePath/> <!-- lookup parent from repository -->

	</parent>



	<properties>

		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

		<java.version>1.8</java.version>

		<fastjson>1.1.43</fastjson>

		<commonsLang>2.6</commonsLang>

		<fileupload>1.3.1</fileupload>

		<poi>3.9</poi>

		<druid>1.0.18</druid>

		<mybatisSpring>1.2.2</mybatisSpring>

		<mybatis>3.2.8</mybatis>

		<tomcatJdbc>9.0.7</tomcatJdbc>

	</properties>



	<dependencies>

		<dependency>

			<groupId>org.springframework.boot</groupId>

			<artifactId>spring-boot-starter-web</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-devtools</artifactId>  

            <optional>true</optional>  

            <scope>true</scope>

  		</dependency>

		

		<dependency>

			<groupId>org.apache.tomcat.embed</groupId>

			<artifactId>tomcat-embed-jasper</artifactId>

		</dependency>

		<dependency>

			<groupId>javax.servlet</groupId>

			<artifactId>jstl</artifactId>

		</dependency>

		

		<dependency>

			<groupId>com.alibaba</groupId>

			<artifactId>fastjson</artifactId>

			<version>${fastjson}</version>

		</dependency>

		<dependency>

			<groupId>commons-lang</groupId>

			<artifactId>commons-lang</artifactId>

			<version>${commonsLang}</version>

		</dependency>

		<dependency>

			<groupId>commons-fileupload</groupId>

			<artifactId>commons-fileupload</artifactId>

			<version>${fileupload}</version>

		</dependency>

		<dependency>

			<groupId>org.apache.poi</groupId>

			<artifactId>poi</artifactId>

			<version>${poi}</version>

		</dependency>

		

		<dependency>

    		<groupId>org.apache.tomcat</groupId>

    		<artifactId>tomcat-jdbc</artifactId>

    		<version>${tomcatJdbc}</version>

		</dependency>

		<dependency>

			<groupId>mysql</groupId>

			<artifactId>mysql-connector-java</artifactId>

		</dependency>

		<dependency>

			<groupId>com.alibaba</groupId>

			<artifactId>druid</artifactId>

			<version>${druid}</version>

		</dependency>

		<dependency>

			<groupId>org.springframework.boot</groupId>

			<artifactId>spring-boot-starter-jdbc</artifactId>

		</dependency>

		<dependency>

			<groupId>org.mybatis</groupId>

			<artifactId>mybatis-spring</artifactId>

			<version>${mybatisSpring}</version>

		</dependency>

		<dependency>

			<groupId>org.mybatis</groupId>

			<artifactId>mybatis</artifactId>

			<version>${mybatis}</version>

		</dependency>

		

		

		

		

		

		

		

		

	</dependencies>



	<build>

		<plugins>

			<plugin>

				<groupId>org.springframework.boot</groupId>

				<artifactId>spring-boot-maven-plugin</artifactId>

			</plugin>

			

			

			<plugin>

            	<groupId>org.springframework.boot</groupId>

            	<artifactId>spring-boot-maven-plugin</artifactId>

            	<configuration>

                	<fork>true</fork>

            	</configuration>

        	</plugin>

			

			

			

		</plugins>

	</build>





</project>

本来是正常的，我热部署后，就是加了这两个配置



<dependency>  

            <groupId>org.springframework.boot</groupId>  

            <artifactId>spring-boot-devtools</artifactId>  

            <optional>true</optional>  

            <scope>true</scope>

</dependency>

<plugin>

            	<groupId>org.springframework.boot</groupId>

            	<artifactId>spring-boot-maven-plugin</artifactId>

            	<configuration>

                	<fork>true</fork>

            	</configuration>

</plugin>

就报错了，报错内容如下：



Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'demoMapper' defined in file [F:\eclipseWorkspace\SSMJ\target\classes\com\xf\code\demo\mapper\DemoMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactoryBean' defined in class path resource [com/xf/code/systemConfig/MybatisConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactoryBean' threw exception; nested exception is java.lang.IllegalArgumentException: Property 'dataSource' is required

Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'demoMapper' defined in file [F:\eclipseWorkspace\SSMJ\target\classes\com\xf\code\demo\mapper\DemoMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactoryBean' defined in class path resource [com/xf/code/systemConfig/MybatisConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactoryBean' threw exception; nested exception is java.lang.IllegalArgumentException: Property 'dataSource' is required

我打了断点发现mybatis配置中：



@Configuration

@MapperScan("com.xf.code.**.mapper")

public class MybatisConfig {

	//private static Logger logger = Logger.getLogger(SsmjApplication.class);

	@Autowired

	private DataSource dataSource;

	

	

	/*@Bean

	@ConfigurationProperties(prefix="spring.datasource")

    public DataSource dataSource() {

        return new org.apache.tomcat.jdbc.pool.DataSource();

    }*/

	@Bean

	public SqlSessionFactory sqlSessionFactoryBean() throws Exception {

		 

		SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();

		sqlSessionFactoryBean.setDataSource(dataSource);

	 

		PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();

	 

		sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath*:/com/**/*Mapper.xml"));

	        

		return sqlSessionFactoryBean.getObject();

	}

	 

	@Bean

	public PlatformTransactionManager transactionManager() {

		return new DataSourceTransactionManager(dataSource);

	}

	@Bean

	public SqlSessionTemplate sqlSessionTemplate() throws Exception {

		return new SqlSessionTemplate(sqlSessionFactoryBean());

	}



}