SpringBoot+SpringCloud+vue+Element开发项目——集成Druid数据源

添加依赖

pom.xml

<!--druid-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>1.1.10</version>
</dependency>

添加配置文件

application.yml

server:
  port: 8001
spring:
  datasource:
    name: druidDataSource
    type: com.alibaba.druid.pool.DruidDataSource
    druid:
      driver-class-name: com.mysql.jdbc.Driver
      url: jdbc:mysql://localhost:3306/mdh?useUnicode=true&zeroDateTimeBehavior=convertToNull&autoReconnect=true&characterEncoding=utf-8
      username: root
      password: root
      filters: stat,wall,log4j,config
      max-active: 100
      initial-size: 1
      max-wait: 60000
      min-idle: 1
      time-between-eviction-runs-millis: 60000
      min-evictable-idle-time-millis: 300000
      validation-query: select 'x'
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false
      pool-prepared-statements: true
      max-open-prepared-statements: 50
      max-pool-prepared-statement-per-connection-size: 20

自定义属性配置，添加配置类

DruidDataSourceProperties.java

/**
 * 数据源属性
 */
@ConfigurationProperties(prefix = "spring.datasource.druid")
public class DruidDataSourceProperties {
 
   // jdbc
   private String driverClassName;
   private String url;
   private String username;
   private String password;
   // jdbc connection pool
   private int initialSize;
   private int minIdle;
   private int maxActive = 100;
   private long maxWait;
   private long timeBetweenEvictionRunsMillis;
   private long minEvictableIdleTimeMillis;
   private String validationQuery;
   private boolean testWhileIdle;
   private boolean testOnBorrow;
   private boolean testOnReturn;
   private boolean poolPreparedStatements;
   private int maxPoolPreparedStatementPerConnectionSize;
   // filter
   private String filters;
 
   public int getInitialSize() {
      return initialSize;
   }
 
   public void setInitialSize(int initialSize) {
      this.initialSize = initialSize;
   }
 
   public int getMinIdle() {
      return minIdle;
   }
 
   public void setMinIdle(int minIdle) {
      this.minIdle = minIdle;
   }
 
   public int getMaxActive() {
      return maxActive;
   }
 
   public void setMaxActive(int maxActive) {
      this.maxActive = maxActive;
   }
 
   public long getMaxWait() {
      return maxWait;
   }
 
   public void setMaxWait(long maxWait) {
      this.maxWait = maxWait;
   }
 
   public long getTimeBetweenEvictionRunsMillis() {
      return timeBetweenEvictionRunsMillis;
   }
 
   public void setTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis) {
      this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
   }
 
   public long getMinEvictableIdleTimeMillis() {
      return minEvictableIdleTimeMillis;
   }
 
   public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
      this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
   }
 
   public String getValidationQuery() {
      return validationQuery;
   }
 
   public void setValidationQuery(String validationQuery) {
      this.validationQuery = validationQuery;
   }
 
   public boolean isTestWhileIdle() {
      return testWhileIdle;
   }
 
   public void setTestWhileIdle(boolean testWhileIdle) {
      this.testWhileIdle = testWhileIdle;
   }
 
   public boolean isTestOnBorrow() {
      return testOnBorrow;
   }
 
   public void setTestOnBorrow(boolean testOnBorrow) {
      this.testOnBorrow = testOnBorrow;
   }
 
   public boolean isTestOnReturn() {
      return testOnReturn;
   }
 
   public void setTestOnReturn(boolean testOnReturn) {
      this.testOnReturn = testOnReturn;
   }
 
   public boolean isPoolPreparedStatements() {
      return poolPreparedStatements;
   }
 
   public void setPoolPreparedStatements(boolean poolPreparedStatements) {
      this.poolPreparedStatements = poolPreparedStatements;
   }
 
   public int getMaxPoolPreparedStatementPerConnectionSize() {
      return maxPoolPreparedStatementPerConnectionSize;
   }
 
   public void setMaxPoolPreparedStatementPerConnectionSize(int maxPoolPreparedStatementPerConnectionSize) {
      this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
   }
 
   public String getFilters() {
      return filters;
   }
 
   public void setFilters(String filters) {
      this.filters = filters;
   }
 
   public String getDriverClassName() {
      return driverClassName;
   }
 
   public void setDriverClassName(String driverClassName) {
      this.driverClassName = driverClassName;
   }
 
   public String getUrl() {
      return url;
   }
 
   public void setUrl(String url) {
      this.url = url;
   }
 
   public String getUsername() {
      return username;
   }
 
   public void setUsername(String username) {
      this.username = username;
   }
 
   public String getPassword() {
      return password;
   }
 
   public void setPassword(String password) {
      this.password = password;
   }

在config包下创建DruidConfig配置类

DruidConfig.java

/**
 * Druid数据源配置
 */
@Configuration
@EnableConfigurationProperties({DruidDataSourceProperties.class})
public class DruidConfig {
    @Autowired
    private DruidDataSourceProperties properties;
 
    @Bean
    @ConditionalOnMissingBean
    public DataSource druidDataSource() {
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.setDriverClassName(properties.getDriverClassName());
        druidDataSource.setUrl(properties.getUrl());
        druidDataSource.setUsername(properties.getUsername());
        druidDataSource.setPassword(properties.getPassword());
        druidDataSource.setInitialSize(properties.getInitialSize());
        druidDataSource.setMinIdle(properties.getMinIdle());
        druidDataSource.setMaxActive(properties.getMaxActive());
        druidDataSource.setMaxWait(properties.getMaxWait());
        druidDataSource.setTimeBetweenEvictionRunsMillis(properties.getTimeBetweenEvictionRunsMillis());
        druidDataSource.setMinEvictableIdleTimeMillis(properties.getMinEvictableIdleTimeMillis());
        druidDataSource.setValidationQuery(properties.getValidationQuery());
        druidDataSource.setTestWhileIdle(properties.isTestWhileIdle());
        druidDataSource.setTestOnBorrow(properties.isTestOnBorrow());
        druidDataSource.setTestOnReturn(properties.isTestOnReturn());
        druidDataSource.setPoolPreparedStatements(properties.isPoolPreparedStatements());
        druidDataSource.setMaxPoolPreparedStatementPerConnectionSize(properties.getMaxPoolPreparedStatementPerConnectionSize());
 
        try {
            druidDataSource.setFilters(properties.getFilters());
            druidDataSource.init();
        } catch (SQLException e) {
            e.printStackTrace();
        }
 
        return druidDataSource;
    }
 
    /**
     * 注册Servlet信息， 配置监控视图
     *
     * @return
     */
    @Bean
    @ConditionalOnMissingBean
    public ServletRegistrationBean<Servlet> druidServlet() {
        ServletRegistrationBean<Servlet> servletRegistrationBean = new ServletRegistrationBean<Servlet>(new StatViewServlet(), "/druid/*");
 
        //白名单：
//        servletRegistrationBean.addInitParameter("allow","127.0.0.1,139.196.87.48");
        //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
        servletRegistrationBean.addInitParameter("deny","192.168.1.119");
        //登录查看信息的账号密码, 用于登录Druid监控后台
        servletRegistrationBean.addInitParameter("loginUsername", "admin");
        servletRegistrationBean.addInitParameter("loginPassword", "admin");
        //是否能够重置数据.
        servletRegistrationBean.addInitParameter("resetEnable", "true");
        return servletRegistrationBean;
 
    }
 
    /**
     * 注册Filter信息, 监控拦截器
     *
     * @return
     */
    @Bean
    @ConditionalOnMissingBean
    public FilterRegistrationBean<Filter> filterRegistrationBean() {
        FilterRegistrationBean<Filter> filterRegistrationBean = new FilterRegistrationBean<Filter>();
        filterRegistrationBean.setFilter(new WebStatFilter());
        filterRegistrationBean.addUrlPatterns("/*");
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }
}

添加log4j依赖

pom.xml

<!--log4j-->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

添加log4j配置

log4j.properties

### set log levels ###    
log4j.rootLogger = INFO,DEBUG, console, infoFile, errorFile ,debugfile,mail 
LocationInfo=true    
 
log4j.appender.console = org.apache.log4j.ConsoleAppender  
log4j.appender.console.Target = System.out  
log4j.appender.console.layout = org.apache.log4j.PatternLayout 
 
log4j.appender.console.layout.ConversionPattern =[%d{yyyy-MM-dd HH:mm:ss,SSS}]-[%p]:%m   %x %n 
 
log4j.appender.infoFile = org.apache.log4j.DailyRollingFileAppender  
log4j.appender.infoFile.Threshold = INFO  
log4j.appender.infoFile.File = D:/logs/log
log4j.appender.infoFile.DatePattern = '.'yyyy-MM-dd'.log'  
log4j.appender.infoFile.Append=true
log4j.appender.infoFile.layout = org.apache.log4j.PatternLayout  
log4j.appender.infoFile.layout.ConversionPattern =[%d{yyyy-MM-dd HH:mm:ss,SSS}]-[%p]:%m  %x %n 
 
log4j.appender.errorFile = org.apache.log4j.DailyRollingFileAppender  
log4j.appender.errorFile.Threshold = ERROR  
log4j.appender.errorFile.File = D:/logs/error  
log4j.appender.errorFile.DatePattern = '.'yyyy-MM-dd'.log'  
log4j.appender.errorFile.Append=true  
log4j.appender.errorFile.layout = org.apache.log4j.PatternLayout  
log4j.appender.errorFile.layout.ConversionPattern =[%d{yyyy-MM-dd HH:mm:ss,SSS}]-[%p]:%m  %x %n
 
log4j.appender.debugfile = org.apache.log4j.DailyRollingFileAppender  
log4j.appender.debugfile.Threshold = DEBUG  
log4j.appender.debugfile.File = D:/logs/debug  
log4j.appender.debugfile.DatePattern = '.'yyyy-MM-dd'.log'  
log4j.appender.debugfile.Append=true  
log4j.appender.debugfile.layout = org.apache.log4j.PatternLayout  
log4j.appender.debugfile.layout.ConversionPattern =[%d{yyyy-MM-dd HH:mm:ss,SSS}]-[%p]:%m  %x %n

启动应用 访问http://localhost:8001/druid/login.html   用户名：admin   密码：admin

跨域请求CORS实现

新建一个CORS配置类 实现WebMvcConfigurer接口

CorsConfig.java

@Configuration
public class CorsConfig implements WebMvcConfigurer {

    @Override
    public void addCorsMappings(CorsRegistry registry){
        registry.addMapping("/**")   //允许跨域访问的路径
                .allowedOrigins("*")   //允许跨域访问的源
                .allowedMethods("POST","GET","PUT","OPTIONS","DELETE")  //允许请求的方法
                .maxAge(168000)   //预检间隔时间
                .allowedHeaders("*")  //允许头部设置
                .allowCredentials(true);  //是否发送cookie
    }
}