今天從下午5.30開始一直在弄SpringBoot整合mybatis+druid,整合了10分鐘,出現了許多bug,解決bug半個小時,寫下這篇博客方便以後出現同樣問題的時候找出錯誤點
在這裏我一步步來完成
目錄
2、填寫Group、Artifact、Package(這個可以默認不寫)
3、勾選依賴,選擇Web、MySQL、JDBC、MyBatis
1、創建項目:
2、填寫Group、Artifact、Package(這個可以默認不寫)
3、勾選依賴,選擇Web、MySQL、JDBC、MyBatis
4、修改項目名
可以默認也可以修改,點擊Finish
5、點擊自動導入
6、導入druid的依賴
由於之前我們加入了mybatis,所以現在我們只需要導入druid的依賴就行了:
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
7、需要加一個log4j依賴
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
這裏需要加這個依賴,不然會啓動不了,出現以下問題:
這是我的所有依賴:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
8、配置application.yml
這裏要注意,要將application.properties改爲application.yml
(我這裏不作解釋了,這個是尚硅谷的,裏面的屬性的意思大家自行百度吧,我這裏另外還配置了一個端口號爲8081,等下訪問記得注意)
spring:
datasource:
# 數據源基本配置
username: root
password: 1
url: jdbc:mysql://localhost:3306/blog?serverTimezone=GMT%2B8
type: com.alibaba.druid.pool.DruidDataSource
# 數據源其他配置
initialSize: 5
minIdle: 1
maxActive: 50
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT 1 FROM DUAL
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
# 配置監控統計攔截的filters,去掉後監控界面sql無法統計,'wall'用於防火牆
filters: stat,wall,log4j
maxPoolPreparedStatementPerConnectionSize: 20
useGlobalDataSourceStat: true
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
server:
port: 8081
在這裏要特別注意url要加這個?serverTimezone=GMT%2B8:
url: jdbc:mysql://localhost:3306/blog?serverTimezone=GMT%2B8
不然會出現這種情況(我的另外一篇博客):https://blog.csdn.net/qq_38712932/article/details/85268345
9、寫配置類
(這個是我的配置類,你們記得要靈活地改爲自己的啊):
package com.eternallyc.springboot.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.sql.DataSource;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
@Configuration
public class DruidConfig {
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource druid(){
return new DruidDataSource();
}
//配置Druid的監控
//1、配置一個管理後臺的Servlet
@Bean
public ServletRegistrationBean statViewServlet(){
ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
Map<String,String> initParams = new HashMap<>();
initParams.put("loginUsername","admin");
initParams.put("loginPassword","123456");
initParams.put("allow","");//默認就是允許所有訪問
initParams.put("deny","192.168.15.21");
bean.setInitParameters(initParams);
return bean;
}
//2、配置一個web監控的filter
@Bean
public FilterRegistrationBean webStatFilter(){
FilterRegistrationBean bean = new FilterRegistrationBean();
bean.setFilter(new WebStatFilter());
Map<String,String> initParams = new HashMap<>();
initParams.put("exclusions","*.js,*.css,/druid/*");
bean.setInitParameters(initParams);
bean.setUrlPatterns(Arrays.asList("/*"));
return bean;
}
}
到這裏配置已經結束了,運行也沒有什麼問題了
測試程序運行也沒有什麼問題