上下文初始化期间遇到异常 - 取消刷新尝试：org.springframework.beans.factory.UnsatisfiedDependencyException：

【问题标题】：Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException:上下文初始化期间遇到异常 - 取消刷新尝试：org.springframework.beans.factory.UnsatisfiedDependencyException：
【发布时间】：2019-08-29 06:14:50
【问题描述】：

问题是，每次我运行项目时，都会弹出来自 org.springframework.beans.factory.UnsatisfiedDependencyException 的错误。

我已经在堆栈中尝试了几个相关问题的答案，但问题还没有解决。

FieldDataService.java

@Component
public interface FieldDataService {
       public FieldData getFieldData() throws SQLException, Exception;

}

FieldDataServiceImpl.java

@Component
public class FieldDataServiceImpl implements FieldDataService {

    @Autowired
    FieldDataDao fieldDataDao;

    @Override
    public FieldData getFieldData() throws SQLException, Exception {
        return this.fieldDataDao.getFieldData();
    }
}

FieldDataDao.java

@Component
public interface FieldDataDao {

    public FieldData getFieldData() throws SQLException, Exception;
}

FieldDataDaoImpl.java

@Component
public class FieldDataDaoImpl implements FieldDataDao{

    @Autowired
    private SqlSession sqlSession;

    @Override
    public FieldData getFieldData() throws SQLException, Exception {
        FieldData result = new FieldData();

        try {
            result = this.sqlSession.selectOne("getFieldData");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
}

FieldData.java

@Component
public class FieldData {

    private String transactionType;
    private String distribution;
    private Date startDate;
    private Date endDate;
    private String reportType;

    public String getTransactionType() {
        return transactionType;
    }
    public void setTransactionType(String transactionType) {
        this.transactionType = transactionType;
    }
    public String getDistribution() {
        return distribution;
    }
    public void setDistribution(String distribution) {
        this.distribution = distribution;
    }
    public Date getStartDate() {
        return startDate;
    }
    public void setStartDate(Date startDate) {
        this.startDate = startDate;
    }
    public Date getEndDate() {
        return endDate;
    }
    public void setEndDate(Date endDate) {
        this.endDate = endDate;
    }
    public String getReportType() {
        return reportType;
    }
    public void setReportType(String reportType) {
        this.reportType = reportType;
    }

    @Override
    public String toString() {
        return "FieldData [transactionType=" + transactionType + ", distribution=" + distribution + ", startDate="
                + startDate + ", endDate=" + endDate + ", reportType=" + reportType + "]";
    }
}

FieldData.xml

<mapper namespace="com.pnb.allianz.jdt.maper.FieldData">
     <resultMap id="FieldDataResultMap" type="FielData">
        <result column="LF2S_TRAN_TYPE"         property="transactionType"/>
        <result column="LF2S_DISTRIBUTION"      property="distribution"/>
        <result column="LF2S_REPORT_TYPE"   property="reportType"/>
    </resultMap>

    <select id="getFieldData" resultMap="FieldDataResultMap">
        SELECT * FROM LF2S_MR_PARAMETERS
        WHERE rownum =1
    </select>
</mapper>

..错误是这样的

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'generateJdtController': Unsatisfied dependency expressed through field 'fieldDataService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataServiceImpl': Unsatisfied dependency expressed through field 'fieldDataDao'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDaoImpl': Unsatisfied dependency expressed through field 'sqlSession'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sqlSessionTemplate' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Unsatisfied dependency expressed through method 'sqlSessionTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in class path resource [org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'sqlSessionFactory' threw exception; nested exception is java.lang.NullPointerException
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataDao' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\dao\FieldDataDao.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'fieldDataService' defined in file [C:\Users\markanthony.ragay\Desktop\julia-document-tracking\julia-document-tracking\target\classes\com\pnb\allianz\jdt\service\FieldDataService.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'sqlSessionFactory': Requested bean is currently in creation: Is there an unresolvable circular reference?
2019-04-08 14:30:32.380  INFO 2284 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2019-04-08 14:30:32.410  INFO 2284 --- [  restartedMain] ConditionEvaluationReportLoggingListener :

提前谢谢各位。希望你能帮助我。

【问题讨论】：

  • 我猜你的 sql 数据源有问题，它为空。检查你的连接设置
  • 如果您的字段数据类是一个实体，那么您应该在该类上添加@Entity。当您使用 mybatis 进行数据库交互时。如有错误请指正。
  • 检查您的SessionFactory：异常堆栈跟踪表明：无法实例化[org.apache.ibatis.session.SqlSessionFactory]：工厂方法'sqlSessionFactory'抛出异常；嵌套异常是 java.lang.NullPointerException 另外我建议从您的接口中删除 @Component 注释，因为它们似乎没有必要。
  • @thehandofNOD 我试过去掉接口上的@Component注解但是报错还是一样
  • 尝试使用：mybatis.org/spring-boot-starter/… SqlSession 还有一个例子。

标签： java spring spring-boot mybatis


【解决方案1】：

您需要检查您的sqlSessionFactory。这个例外是NullPointerException。

您的错误信息

通过方法'sqlSessionTemplate'表达的不满足的依赖关系 参数0；嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误 创建在类路径中定义的名称为“sqlSessionFactory”的bean 资源 [ org/mybatis/spring/boot/autoconfigure/MybatisAutoConfiguration.class]: 通过工厂方法实例化 Bean 失败；嵌套异常是 org.springframework.beans.BeanInstantiationException：失败 实例化[org.apache.ibatis.session.SqlSessionFactory]：工厂 方法“sqlSessionFactory”抛出异常；嵌套异常是 java.lang.NullPointerException

【讨论】：

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