【springboot】spring boot配置总结

springboot配置

jpa

spring.jpa.hibernate.dialect

• sqlserver：org.hibernate.dialect.SQLServer2012Dialect
• mysql：org.hibernate.dialect.MySQL5Dialect

druid

基础配置

# SQL_SERVER
spring:
  datasource:
    #使用druid配置多数据源，此处配置了两个数据源
    druid:
      one:
        driver-class-name: net.sourceforge.jtds.jdbc.Driver
        url: jdbc:jtds:sqlserver://192.168.40.48:1433/HY_MIOT
        username: sa
        password: Admin2012
        #连接超时时间
        max-wait: 60000
        #初始化连接数
        initial-size: 5
        validation-query: select 'x'
        test-while-idle: true
        test-on-borrow: false
        test-on-return: false
        #配置监控统计拦截的filters
        filters: stat
        #最大连接数
        max-active: 20
        #最小连接数
        min-idle: 3
        #连接在池中的最小生成时间，单位毫秒
        min-evictable-idle-time-millis: 300000
        #配置检测需要关闭的空闲连接的间隔时间，单位毫秒
        time-between-eviction-runs-millis: 60000
        #以下两个是关闭druid连接发生异常时自动重连功能
        connection-error-retry-attempts: 0
        break-after-acquire-failure: true
      two:
        driver-class-name: net.sourceforge.jtds.jdbc.Driver
        url: jdbc:jtds:sqlserver://192.168.40.48:1433/qsb_test
        username: sa
        password: Admin2012
        max-wait: 60000
        initial-size: 5
        validation-query: select 'x'
        test-while-idle: true
        test-on-borrow: false
        test-on-return: false
        filters: stat
        max-active: 20
        min-idle: 3
        min-evictable-idle-time-millis: 300000
        time-between-eviction-runs-millis: 60000

druid在springboot中配置

/**
 * druid配置
 */
@Configuration
public class DruidConfiguration {

    @Primary
    @Bean
    @ConfigurationProperties("spring.datasource.druid.one")
    public DataSource dataSourceOne() {
        return DruidDataSourceBuilder.create().build();
    }

    @Bean
    @ConfigurationProperties("spring.datasource.druid.two")
    public DataSource dataSourceTwo() {
        return DruidDataSourceBuilder.create().build();
    }

    @Bean
    public StatFilter stateFilter() {
        StatFilter statFilter = new StatFilter();
        //是否记录慢sql
        statFilter.setLogSlowSql(true);
        //慢sql定义的查询时间，单位毫秒
        statFilter.setSlowSqlMillis(10000);
        return statFilter;
    }
}

logback日志配置

1. 加一个配置文件logback-spring.xml
2. 这是常见的配置文件，控制台输出和文件输出的定义。文件配置把INFO级别的和ERROR级别的分开，方便查找原因。
   文件内容：

<configuration  scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>qsb-dtcontextName>
    
    
    <property name="log.path" value="./log" />
    
    <property name="CONSOLE_LOG_PATTERN"
              value="%date{yyyy-MM-dd HH:mm:ss} | %highlight(%-5level) | %boldYellow(%thread) | %boldGreen(%logger) | %msg%n"/>
    
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        
        
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>${CONSOLE_LOG_PATTERN}pattern>
            
        layout>
    appender>

    
    <appender name="fileInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            
            <level>ERRORlevel>
            
            <onMatch>DENYonMatch>
            
            <onMismatch>ACCEPTonMismatch>
        filter>
        
        <File>${log.path}/dt-info.logFile>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${log.path}/dt-info.%d{yyyy-MM-dd}.logfileNamePattern>
            
            <maxHistory>90maxHistory>
            
            
        rollingPolicy>
        <encoder>
            
            
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%npattern>
        encoder>
    appender>

    <appender name="fileErrorLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
        
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>Errorlevel>
        filter>
        
        <File>${log.path}/dt-error.logFile>
        
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            
            <FileNamePattern>${log.path}/dt-error.%d{yyyy-MM-dd}.logFileNamePattern>
            
            <maxHistory>90maxHistory>
            
            
        rollingPolicy>
        
        <encoder>
            
            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%npattern>
        encoder>
    appender>

    
    <root level="info">
        <appender-ref ref="console" />
        <appender-ref ref="fileInfoLog" />
        <appender-ref ref="fileErrorLog" />
    root>

configuration>

springboot功能

开发环境热启动

1. pom.xml 中添加依赖

<dependency>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-devtoolsartifactId>
    <optional>trueoptional>
dependency>

1. 修改idea build project automatically (勾选)
   file->settings->build,execution,deployment -> compile

2. alt+shift+ctrl+/ 设置register (勾选)
   compiler.automake.allow.when.app.running

获取ApplicationContext的方式

• 说明：适用于web和非web方式

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;

@Component
@Lazy(false)
public class ApplicationContextRegister implements ApplicationContextAware {
    private static final Logger LOGGER = LoggerFactory.getLogger(ApplicationContextRegister.class);
    private static ApplicationContext APPLICATION_CONTEXT;

    /**  * 设置spring上下文  *  * @param applicationContext spring上下文  * @throws BeansException  */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        LOGGER.debug("ApplicationContext registed-->{}", applicationContext);  APPLICATION_CONTEXT = applicationContext;
    }

    public static ApplicationContext getApplicationContext() {
        return APPLICATION_CONTEXT;
    }
}

多数据源的配置和切面切换

1. 添加多数据源的配置，需要druid依赖

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    url: jdbc:jtds:sqlserver://192.168.40.1:1433/ds
    driver-class-name: net.sourceforge.jtds.jdbc.Driver
    username: sa
    password: xxx
  application:
    name: qsb-dt

# 更多数据源
custom:
  datasource:
    names: ds1,ds2
    ds1:
      type: com.alibaba.druid.pool.DruidDataSource
      driver-class-name: net.sourceforge.jtds.jdbc.Driver
      url: jdbc:jtds:sqlserver://192.168.40.1:1433/ds1
      username: sa
      password: xxx
    ds2:
      type: com.alibaba.druid.pool.DruidDataSource
      driver-class-name: net.sourceforge.jtds.jdbc.Driver
      url: jdbc:jtds:sqlserver://192.168.40.1:1433/ds2
      username: sa
      password: xxx

1. 创建以下所有类
   
   • DynamicDataSource

import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
/**
 * 其实springboot已经集成了一个切换多数据源的方法，AbstractRoutingDataSource
 * 可以理解为一个map，它的key是数据源的名称，可以自己定义，它的value就是对应
 * 的数据源，底层的切换不需要关心，只需要告诉
 /
public class DynamicDataSource extends AbstractRoutingDataSource {

    @Override
    protected Object determineCurrentLookupKey() {
        return DynamicDataSourceContextHolder.getDataSourceType();
    }

}

• DynamicDataSourceContextHolder

import java.util.ArrayList;
import java.util.List;

/**
 * 这是动态数据员的实际切换类。底层的切换不需要关心，只需要告诉需要的数据源
 * 的name就可以了。这边的保持当前数据源的name用的是ThreadLocal，为的是线程安
 * 全，保障线程安全。
 */
public class DynamicDataSourceContextHolder {

    private static final ThreadLocal contextHolder = new ThreadLocal();
    public static List dataSourceIds = new ArrayList<>();

    //切换数据源的方法
    public static void setDataSourceType(String dataSourceType) {
        contextHolder.set(dataSourceType);
    }

    public static String getDataSourceType() {
        return contextHolder.get();
    }

    public static void clearDataSourceType() {
        contextHolder.remove();
    }

    /**
     * 判断指定DataSrouce当前是否存在
     *
     * @param dataSourceId
     */
    public static boolean containsDataSource(String dataSourceId){
        return dataSourceIds.contains(dataSourceId);
    }
}

• DynamicDataSourceRegister

/**
 * 动态数据源注册

 * 启动动态数据源请在启动类中（如SpringBootSampleApplication）
 * 添加 @Import(DynamicDataSourceRegister.class)
 *
 */
public class DynamicDataSourceRegister
        implements ImportBeanDefinitionRegistrar, EnvironmentAware {

    private static final Logger logger = LoggerFactory.getLogger(DynamicDataSourceRegister.class);

    private ConversionService conversionService = new DefaultConversionService();
    private PropertyValues dataSourcePropertyValues;

    // 如配置文件中未指定数据源类型，使用该默认值
    private static final Object DATASOURCE_TYPE_DEFAULT = "org.apache.tomcat.jdbc.pool.DataSource";
    // private static final Object DATASOURCE_TYPE_DEFAULT =
    // "com.zaxxer.hikari.HikariDataSource";

    // 数据源
    private DataSource defaultDataSource;
    private Map customDataSources = new HashMap<>();

    @Override
    public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata, BeanDefinitionRegistry registry) {
        Map targetDataSources = new HashMap();
        // 将主数据源添加到更多数据源中
        targetDataSources.put("dataSource", defaultDataSource);
        DynamicDataSourceContextHolder.dataSourceIds.add("dataSource");
        // 添加更多数据源
        targetDataSources.putAll(customDataSources);
        for (String key : customDataSources.keySet()) {
            DynamicDataSourceContextHolder.dataSourceIds.add(key);
        }

        // 创建DynamicDataSource
        GenericBeanDefinition beanDefinition = new GenericBeanDefinition();
        beanDefinition.setBeanClass(DynamicDataSource.class);
        beanDefinition.setSynthetic(true);
        MutablePropertyValues mpv = beanDefinition.getPropertyValues();
        mpv.addPropertyValue("defaultTargetDataSource", defaultDataSource);
        mpv.addPropertyValue("targetDataSources", targetDataSources);
        registry.registerBeanDefinition("dataSource", beanDefinition);

        logger.info("Dynamic DataSource Registry");
    }

    /**
     * 创建DataSource
     *
     * @return
     */
    @SuppressWarnings("unchecked")
    public DataSource buildDataSource(Map dsMap) {
        try {
            Object type = dsMap.get("type");
            if (type == null)
                type = DATASOURCE_TYPE_DEFAULT;// 默认DataSource

            Class dataSourceType;
            dataSourceType = (Class) Class.forName((String) type);

            String driverClassName = dsMap.get("driver-class-name").toString();
            String url = dsMap.get("url").toString();
            String username = dsMap.get("username").toString();
            String password = dsMap.get("password").toString();

            DataSourceBuilder factory = DataSourceBuilder.create().driverClassName(driverClassName).url(url)
                    .username(username).password(password).type(dataSourceType);
            return factory.build();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 加载多数据源配置
     */
    @Override
    public void setEnvironment(Environment env) {
        initDefaultDataSource(env);
        initCustomDataSources(env);
    }

    /**
     * 初始化主数据源
     *
     */
    private void initDefaultDataSource(Environment env) {
        // 读取主数据源
        RelaxedPropertyResolver propertyResolver = new RelaxedPropertyResolver(env, "spring.datasource.");
        Map dsMap = new HashMap<>();
        dsMap.put("type", propertyResolver.getProperty("type"));
        dsMap.put("driver-class-name", propertyResolver.getProperty("driver-class-name"));
        dsMap.put("url", propertyResolver.getProperty("url"));
        dsMap.put("username", propertyResolver.getProperty("username"));
        dsMap.put("password", propertyResolver.getProperty("password"));
        logger.info("{}", dsMap);
        defaultDataSource = buildDataSource(dsMap);

        dataBinder(defaultDataSource, env);
    }

    /**
     * 为DataSource绑定更多数据
     *
     * @param dataSource
     * @param env
     */
    private void dataBinder(DataSource dataSource, Environment env){
        RelaxedDataBinder dataBinder = new RelaxedDataBinder(dataSource);
        //dataBinder.setValidator(new LocalValidatorFactory().run(this.applicationContext));
        dataBinder.setConversionService(conversionService);
        dataBinder.setIgnoreNestedProperties(false);//false
        dataBinder.setIgnoreInvalidFields(false);//false
        dataBinder.setIgnoreUnknownFields(true);//true
        if (dataSource instanceof DruidDataSource) {
            ((DruidDataSource) dataSource).setValidationQuery("select 'x'");
        }
        if(dataSourcePropertyValues == null){
            Map rpr = new RelaxedPropertyResolver(env, "spring.datasource").getSubProperties(".");
            Map values = new HashMap<>(rpr);
            // 排除已经设置的属性
            values.remove("type");
            values.remove("driver-class-name");
            values.remove("url");
            values.remove("username");
            values.remove("password");
            dataSourcePropertyValues = new MutablePropertyValues(values);
        }
        dataBinder.bind(dataSourcePropertyValues);
    }

    /**
     * 初始化更多数据源
     *
     */
    private void initCustomDataSources(Environment env) {
        // 读取配置文件获取更多数据源，也可以通过defaultDataSource读取数据库获取更多数据源
        RelaxedPropertyResolver propertyResolver = new RelaxedPropertyResolver(env, "custom.datasource.");
        String dsPrefixs = propertyResolver.getProperty("names");
        for (String dsPrefix : dsPrefixs.split(",")) {// 多个数据源
            Map dsMap = propertyResolver.getSubProperties(dsPrefix + ".");
            DataSource ds = buildDataSource(dsMap);
            customDataSources.put(dsPrefix, ds);
            dataBinder(ds, env);
        }
    }

• TargetDataSource

import java.lang.annotation.*;

/**
 * 在方法上使用，用于指定使用哪个数据源
 *
 */
@Target({ ElementType.METHOD, ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface TargetDataSource {
    String name();
}

• DynamicDataSourceAspect

@Aspect
@Order(-1)// 保证该AOP在@Transactional之前执行
@Component
public class DynamicDataSourceAspect {

    private static final Logger logger = LoggerFactory.getLogger(DynamicDataSourceAspect.class);

    @Before("@annotation(ds)")
    public void changeDataSource(JoinPoint point, TargetDataSource ds) throws Throwable {
        String dsId = ds.name();
        if (!DynamicDataSourceContextHolder.containsDataSource(dsId)) {
            logger.error("数据源[{}]不存在，使用默认数据源 > {}", ds.name(), point.getSignature());
        } else {
            logger.debug("Use DataSource : {} > {}", ds.name(), point.getSignature());
            DynamicDataSourceContextHolder.setDataSourceType(ds.name());
        }
    }

    @After("@annotation(ds)")
    public void restoreDataSource(JoinPoint point, TargetDataSource ds) {
        logger.debug("Revert DataSource : {} > {}", ds.name(), point.getSignature());
        DynamicDataSourceContextHolder.clearDataSourceType();
    }

}

1. 用测试service进行测试

@Service
public class TestService {
    @Autowired private BdPersonMapper bdPersonMapper;

    /**
     * 指定数据源
     */
    @TargetDataSource(name="ds1")
    public List findAll1(){
        return bdPersonMapper.findAll();
    }

    /**
     * 指定数据源
     */
    @TargetDataSource(name="ds2")
    public List findAll2(){
        return bdPersonMapper.findAll();
    }
}