maven project整合springboot mybatis druid
源码地址:https://github.com/btredback/springboot-mybatis-druid
- springboot 快速开发springmvc
- mybatis 轻量级持久层
- druid 阿里数据库连接池
- 数据库当前配置为postgre数据库,可修改依赖driver及datasource配置更换数据库
pom.xml依赖相关内容
因为只做了框架demo,依赖包很少
spring-boot-starter-web -> springmvc和tomcat
spring-boot-starter-test -> 单元测试
mybatis-spring-boot-starter -> mybatis
druid -> druid
postgresql -> 数据库驱动
UTF-8
1.7
1.1.5
1.5.6.RELEASE
org.springframework.boot
spring-boot-dependencies
${spring-boot.version}
pom
import
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-test
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.1
com.alibaba
druid
${druid.version}
postgresql
postgresql
9.1-901-1.jdbc4
整合步骤
- 引入相关依赖,pom内容如上
- springboot主class声明,也就是springboot的入口application main
@ServletComponentScan 自动扫描servlet的标签,否则标签不起作用,因为druid的内部管理页面是通过servlet声明的,所以需要该标签。
修改为继承SpringBootServletInitializer并重写configure方法,该方法以便打包war时,不通过main进入而是正常web项目使用。
@SpringBootApplication
@ServletComponentScan
public class App extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(this.getClass());
}
public static void main( String[] args )
{
SpringApplication.run(App.class, args);
}
}
- druid初始化相关配置类,配置参数写于application.properties中
为了使dataSource使用druid的,需要使用@Primary标签,该标签在注入bean时,若找到多个相同bean,则优先注入标签声明的。
druid github项目中有一个自动化配置的druid-springboot-start,如果需要可以使用这个,代替druid依赖,直接配置属性即可。
druid 自动化配置源码class地址
@Configuration
// @PropertySource("classpath:application-test.properties")
@ConfigurationProperties("spring.datasource")
public class DruidDBConfig {
private String url;
private String username;
private String userpassword;
private String driverClassName;
private int initialSize;
private int minIdle;
private int maxActive;
private int maxWait;
private int timeBetweenEvictionRunsMillis;
private int minEvictableIdleTimeMillis;
private String validationQuery;
private boolean testWhileIdle;
private boolean testOnBorrow;
private boolean testOnReturn;
private boolean poolPreparedStatements;
private int maxPoolPreparedStatementPerConnectionSize;
private String filters;
private String connectionProperties;
@Bean
// 声明其为Bean实例
@Primary
//如果同一个类型有多个实例,但需要注入一个的时候使用
// 在同样的DataSource中,首先使用被标注的DataSource
public DataSource dataSource() {
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(url);
datasource.setUsername(username);
datasource.setPassword(userpassword);
datasource.setDriverClassName(driverClassName);
// configuration
datasource.setInitialSize(initialSize);
datasource.setMinIdle(minIdle);
datasource.setMaxActive(maxActive);
datasource.setMaxWait(maxWait);
datasource
.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setValidationQuery(validationQuery);
datasource.setTestWhileIdle(testWhileIdle);
datasource.setTestOnBorrow(testOnBorrow);
datasource.setTestOnReturn(testOnReturn);
datasource.setPoolPreparedStatements(poolPreparedStatements);
datasource
.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
try {
datasource.setFilters(filters);
} catch (SQLException e) {
/*logger.log(Level.ERROR,
"druid configuration initialization filter : {0}", e);*/
e.printStackTrace();
}
datasource.setConnectionProperties(connectionProperties);
return datasource;
}
- druid内部监控页面配置class
druid内部监控页面写于servlet,直接继承该servlet,然后配置相关属性。当前配置可通过 /druid/index.html访问管理页面
@WebServlet(urlPatterns={"/druid/*"},
initParams={
@WebInitParam(name="allow",value="127.0.0.1"),// IP白名单(没有配置或者为空,则允许所有访问)
@WebInitParam(name="deny",value="192.168.1.100"),// IP黑名单 (存在共同时,deny优先于allow)
@WebInitParam(name="loginUsername",value="admin"),// 用户名
@WebInitParam(name="loginPassword",value="123456"),// 密码
@WebInitParam(name="resetEnable",value="false")// 禁用HTML页面上的“Reset All”功能
})
public class DruidStatViewServlet extends StatViewServlet {
/**
*
*/
private static final long serialVersionUID = 8782104600990278875L;
}
- application.properties配置druid相关属性及mybatis相关属性
例如:
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.url=jdbc:postgresql://localhost:5432/testdb
spring.datasource.username=
spring.datasource.userpassword=
spring.datasource.driverClassName=org.postgresql.Driver
#连接池的配置信息
spring.datasource.initialSize=5
spring.datasource.minIdle=5
spring.datasource.maxActive=20
spring.datasource.maxWait=60000
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=SELECT 1 FROM DUAL
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.poolPreparedStatements=true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.filters=stat,wall,log4j
spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
# MyBatis 配置
mybatis.mapper-locations=classpath*:com/project/springboot_mybatis_druid/mapper/*.xml
mybatis.type-aliases-package=com.project.springboot_mybatis_druid.model
# mybatis.mapper-locations:xml文件扫描位置
# mybatis.type-aliases-package:Model包扫描位置
# mybatis.config:mybatis-config.xml配置文件的路径
# mybatis.typeHandlersPackage:扫描typeHandlers的包
# mybatis.checkConfigLocation:检查配置文件是否存在
# mybatis.executorType:设置执行模式(SIMPLE, REUSE, BATCH),默认为SIMPLE
- 编写表映射model,dao及其mybatis mapper xml,service,controller
- 编写单元测试
- 打包jar/war,pom增加build内容
jar打包完成,直接java -jar xxxx.jar即可使用
war打包完成,可放到其他容器中使用(war打包需要把packaging由jar换为war,且将spring-boot-starter-web依赖中的tomcat去除,springboot入口需要继承相关类增加相关重写方法),参考spring-boot guide html
打包war时需要修改依赖,去除tomcat
org.springframework.boot
spring-boot-starter-web
org.apache.maven.plugins
maven-compiler-plugin
2.1
1.7
org.springframework.boot
spring-boot-maven-plugin
1.5.8.RELEASE
${start-class}
ZIP
-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005
repackage