报错详情:
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-03-13 15:31:51.932 ERROR 31060 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
APPLICATION FAILED TO START
Description:
Field jdbcTemplate in com.lmy.demo.service.UserService required a bean of type 'org.springframework.jdbc.core.JdbcTemplate' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean of type 'org.springframework.jdbc.core.JdbcTemplate' in your configuration.
有添加数据源配置吗?
解决方案:
在运行类中加入如下代码,DateSource这块看自己的数据源,我这边用的是阿里的druid
[java] view plain copy
package com.gwd;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;
import com.alibaba.druid.pool.DruidDataSource;
@SpringBootApplication
public class SpringBootTestApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootTestApplication.class, args);
}
@Autowired
private Environment env;
//destroy-method="close"的作用是当数据库连接不使用的时候,就把该连接重新放到数据池中,方便下次使用调用.
@Bean(destroyMethod = "close")
public DataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl(env.getProperty("spring.datasource.url"));
dataSource.setUsername(env.getProperty("spring.datasource.username"));//用户名
dataSource.setPassword(env.getProperty("spring.datasource.password"));//密码
dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
dataSource.setInitialSize(2);//初始化时建立物理连接的个数
dataSource.setMaxActive(20);//最大连接池数量
dataSource.setMinIdle(0);//最小连接池数量
dataSource.setMaxWait(60000);//获取连接时最大等待时间,单位毫秒。
dataSource.setValidationQuery("SELECT 1");//用来检测连接是否有效的sql
dataSource.setTestOnBorrow(false);//申请连接时执行validationQuery检测连接是否有效
dataSource.setTestWhileIdle(true);//建议配置为true,不影响性能,并且保证安全性。
dataSource.setPoolPreparedStatements(false);//是否缓存preparedStatement,也就是PSCache
return dataSource;
}
}
定义了吗,如果定义了,是不是没有定义扫描那个包
包,注解以及配置文件看一下jdbc链接池的配置是否正确