1、application.yml
spring:
profiles:
active: dev
datasource:
url: jdbc:mysql://192.168.2.201:3306/pmsd?useUnicode=true&characterEncoding=utf8&ssl=false
username: app_pmsd
password: 635151_Itp
driver-class-name: com.mysql.jdbc.Driver
druid:
initial-size: 1
minIdle: 5
maxActive: 20
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
2、DataSourceProperties.java
@Component
@ConfigurationProperties(prefix = "spring.datasource")
public class DataSourceProperties {
private String url;
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
3、MybatisConfigurer.java
@Configuration
public class MybatisConfigurer {
@Autowired
private DataSourceProperties dataSourceProperties;
@Bean(name = "dataSource")
public DataSource dataSource() {
DruidDataSource druidDataSource = new DruidDataSource();
druidDataSource.setUrl(dataSourceProperties.getUrl());
//druidDataSource.setUsername(dataSourceProperties.getUserName());
//druidDataSource.setPassword(dataSourceProperties.getPassWord());
//druidDataSource.setDriverClassName(dataSourceProperties.getDriverClassName());
return druidDataSource;
}
}
4、pom.xml有引用
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
代碼如上，我在獲取dataSourceProperties得到的是null，請問各位大神是哪里寫的不對呢？謝謝
2 回答
MMMHUHU
TA貢獻1834條經驗 獲得超8個贊
已經解決。原因是我在MybatisConfigurer類中還有另外一個方法MapperScannerConfigurer造成的，因為spring會首先執行MapperScannerConfigurer方法，在執行的時候還沒有創建sqlsessionFactory，所以就會造成空指針異常
慕桂英546537
TA貢獻1848條經驗 獲得超10個贊
DataSourceProperties 里加入代碼
public DataSource config(DruidDataSource dataSource){
dataSource.setUrl(url);
return dataSource;
}MybatisConfigurer里修改為
@Bean
public DruidDataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
druidProperties.config(dataSource);
return dataSource;
}添加回答
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