前言:对于使用配置文件已经有了一定经验的初学者来说,应该体验一下使用注解作为配置文件的感受,一下我用自己的经验来配置一份最简单但同时也全面的配置。安利一篇自己的 Maven自定义SpringBoot 更方便快捷的启动项目, 特别适合毕业设计和小型项目。
1、目录结构
目录结构应该是搭建项目的说明中首先说明的东西,这是涉及到学习者对整体结构了解的一个前提。
2、pom文件配置
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.cogitationsoft</groupId>
<artifactId>findit</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>findit Maven Webapp</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<encoding>UTF-8</encoding>
<java.version>1.8</java.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<junit.version>4.12</junit.version>
<spring.version>4.3.14.RELEASE</spring.version>
<servlet.api.version>3.1.0</servlet.api.version>
<fastjson.version>1.2.46</fastjson.version>
<mybatis.version>3.4.1</mybatis.version>
<mybatis.spring.version>1.3.0</mybatis.spring.version>
<mysql.connector.version>5.1.41</mysql.connector.version>
<pagehelper.version>5.1.2</pagehelper.version>
<log4j.version>2.10.0</log4j.version>
<druid.version>1.1.9</druid.version>
<freemarker.version>2.3.23</freemarker.version>
<jackson.version>2.5.4</jackson.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<!--spring reply on -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--servlet-api-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet.api.version}</version>
<scope>provided</scope>
</dependency>
<!-- /com.alibaba/fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
<!-- log4j-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- mybatis 和 mysql -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<!-- database connection pool -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>${freemarker.version}</version>
</dependency>
<!-- Jackson Json处理工具包 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>${jackson.version}</version>
</dependency>
</dependencies>
<build>
<finalName>findit</finalName>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<!-- Config: Maven Tomcat Plugin -->
<!-- http://mvnrepository.com/artifact/org.apache.tomcat.maven/tomcat7-maven-plugin%20-->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<!-- Config: contextPath and Port (Default: /SpringMVCFreeMarker : 8080) -->
<configuration>
<path>/</path>
<port>8080</port>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>
3、web.xml配置
这里需要做一个说明,因为在全注解配置的配置文件中, web.xml 并不是必需要的,但也可以保留,并且web.xml也可以做简单的应用。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1"
metadata-complete="false">
<display-name>Archetype Created Web Application</display-name>
<welcome-file-list>
<welcome-file></welcome-file>
</welcome-file-list>
</web-app>
如果你保留了web.xml配置文件那么必须把 metadata-complete设置为fasle。可以设置welcome-file来作为根目录的首页, 当然你也可以通过Controller去设置。
4、Log4j2配置信息
官方文档中有这样的说明,当你是用Log4j2的时候会自动加载classpath下的名为图片中的那些配置文件,并且按照1~10是有优先级的,取名的时候要注意这个问题,并且在2.x开始到2.4是不支持properties的配置的,默认使用xml配置,在2.4之后又新加回了properties配置。详细配置请看官方文档。
#属性表示log4j2本身的日志信息打印级别
status = DEBUG
#如果犯错,url,路径等结果输出到strerr中
dest = err
#log4j 2.6 之前和 之后的 配置不同 ,2.6 之后 ,当第一次使用 identifiers 列表时,
#不再需要 指定 name。但是如果你要使用多个,仍然要指定
name = PropertiesConfig
# 指定日志文件的位置和文件名称,以便记录多份日志时,直接引用
property.filename = E:/target/logs
# 级别过滤(过滤日志记录)
filter.threshold.type = ThresholdFilter
# 只记录debug级别以上的日志,大小写无关:(ALL<)TRACE<DEBUG<INFO<WARN<ERROR<FATAL(<OFF)
filter.threshold.level = debug
# 控制台类型的日志输出源
appender.console.type = Console
# 输出源的名称
appender.console.name = STDOUT
# 输出布局类型
appender.console.layout.type = PatternLayout
# 控制台输出编码
appender.console.layout.charset=UTF-8
# 输出模板
appender.console.layout.pattern =%d %p %C{1.} [%t] %m%n
appender.console.filter.threshold.type = ThresholdFilter
appender.console.filter.threshold.level = debug
# 文件滚动记录类型的日志输出源
appender.rolling.type = RollingFile
# 指定当前滚动输出源的名称
appender.rolling.name = RollingFile
# 指定当前日志文件的位置和文件名称,可以单独指定,也可以直接引用之前定义过得property.filename参数
appender.rolling.fileName = ${filename}/findit.log
# 指定当发生Rolling时,文件的转移和重命名规则
appender.rolling.filePattern = ${filename}/findit-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz
# 滚动记录输出源布局类型
appender.rolling.layout.type = PatternLayout
# 日志文件输出编码
appender.rolling.layout.charset=UTF-8
# 滚动记录输出模板
appender.rolling.layout.pattern = %d %p %C{1.} [%t] %m%n
# 指定记录文件的封存策略,该策略主要是完成周期性的日志文件封存工作
appender.rolling.policies.type = Policies
# 基于时间的触发策略(TriggeringPolicy)
appender.rolling.policies.time.type = TimeBasedTriggeringPolicy
# 当前记录周期为每2秒生成一个文件,如果filePattern中配置的文件重命名规则是target/rolling2/test1-%d{yyyy-MM-dd HH-mm}-%i,最小的时间粒度是mm,即分钟,TimeBasedTriggeringPolicy指定的size是1,结合起来就是每2分钟生成一个新文件。如果改成%d{yyyy-MM-dd HH},最小粒度为小时,则每2个小时生成一个文件。
appender.rolling.policies.time.interval = 2
# 是否对封存时间进行调制。若modulate=true,则封存时间将以0点为边界进行偏移计算。比如,modulate=true,interval=4hours,那么假设上次封存日志的时间为03:00,则下次封存日志的时间为04:00,之后的封存时间依次为08:00,12:00,16:00
appender.rolling.policies.time.modulate = true
# 基于日志文件体积的触发策略。
appender.rolling.policies.size.type = SizeBasedTriggeringPolicy
# 当日志文件体积大于size指定的值时,触发Rolling
appender.rolling.policies.size.size=100MB
# 文件封存的覆盖策略(RolloverStrategy)
appender.rolling.strategy.type = DefaultRolloverStrategy
# 生成分割(封存)文件的个数,默认为5(-1,-2,-3,-4,-5)
appender.rolling.strategy.max = 5
# 设置字符集编码
appender.rolling.Encoding=UTF-8
# 记录器名称
logger.rolling.name = com.example.my.app
# 设置打印级别(日志级别)
logger.rolling.level = debug
# 是否向上级logger传递打印信息
logger.rolling.additivity = false
# 关联名称为RollingFile的输出源(appender)
logger.rolling.appenderRef.rolling.ref = RollingFile
# 根记录器,所有记录器的父辈
rootLogger.level = info
# 关联名称为STDOUT的输出源(appender)
rootLogger.appenderRef.stdout.ref = STDOUT
# 关联名称为RollingFile的输出源(appender)
rootLogger.appenderRef.rolling.ref = RollingFile
5、 Web容器初始化 配置
package com.cogitationsoft.findit.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
/**
* @author: Andy
* @date: 5/2/2018 11:34 AM
* @description: BaseConfig WebApplicationInitializer
* @version: 1.0
*/
public class ApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class[]{RootConfig.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class[]{WebConfig.class};
}
@Override
protected String[] getServletMappings() {
return new String[]{"/"};
}
}
6、 根配置信息
package com.cogitationsoft.findit.config;
import org.springframework.context.annotation.*;
import org.springframework.core.type.filter.RegexPatternTypeFilter;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import java.util.regex.Pattern;
/**
* @author: Andy
* @date: 5/3/2018 5:11 PM
* @description: 根配置信息, 用于加载SpringIoc Context
* @version: 1.0
*/
@Configuration
@ComponentScan(basePackages = {"com.cogitationsoft.findit"}, excludeFilters = {
@ComponentScan.Filter(type = FilterType.CUSTOM, value = RootConfig.WebPackage.class)
})
@EnableTransactionManagement
@PropertySource("classpath:log4j2.properties")
@Import(MyBatisConfig.class)
public class RootConfig{
// 内部类,用来排除 web 相关的包,因为这些包已经在 WebConfig 中导入了
public static class WebPackage extends RegexPatternTypeFilter {
public WebPackage() {
super(Pattern.compile("org\\.acherie\\.web"));
}
}
}
7、SpringMvc配置
package com.cogitationsoft.findit.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.*;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
import org.springframework.web.servlet.view.json.MappingJackson2JsonView;
/**
* @author: Andy
* @date: 5/2/2018 2:20 PM
* @description: SpringMVC starter
* @version: 1.0
*/
@Configuration
@EnableWebMvc
@ComponentScan("com.cogitationsoft.findit")
public class WebConfig extends WebMvcConfigurerAdapter{
/**
* Method Description:
* 〈配置视图解析器〉
*
* @param: null
* @return: ViewResolver
* @author: Andy
* @date: 5/3/2018 4:05 PM
*/
@Bean
public ViewResolver viewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".ftl");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
/**
* Method Description:
* 〈配置Freemarker〉
*
* @param: null
* @return:
* @author: Andy
* @date: 5/3/2018 4:07 PM
*/
@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
registry.enableContentNegotiation(new MappingJackson2JsonView());
registry.freeMarker().cache(false);
}
@Bean
public FreeMarkerConfigurer freeMarkerConfigurer() {
FreeMarkerConfigurer configurer = new FreeMarkerConfigurer();
configurer.setTemplateLoaderPath("/WEB-INF/views/");
return configurer;
}
/**
* Method Description:
* 〈静态资源位置〉
*
* @param: ResourceHandlerRegistry 静态资源处理器注册
* @return: void
* @author: Andy
* @date: 5/3/2018 4:45 PM
*/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/public-resources/");
}
}
8、 Mybatis 及 druid基本配置
package com.cogitationsoft.findit.config;
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
/**
* @author: Andy
* @date: 5/3/2018 5:57 PM
* @description: Mybatis 配置信息
* @version: 1.0
*/
@Configuration
@EnableTransactionManagement
@PropertySource("classpath:config/druid.properties")
@MapperScan("com.cogitationsoft.findit.mapper")
public class MyBatisConfig {
@Autowired(required = false)
public Environment env;
@Value("${druid.driverClassName}")
private String driver;
@Value("${druid.url}")
private String url;
@Value("${druid.username}")
private String username;
@Value("${druid.password}")
private String password;
@Value("${druid.initialSize}")
private int initialSize;
@Value("${druid.minIdle}")
private int minIdle;
@Value("${druid.maxActive}")
private int maxActive;
@Value("${druid.maxWait}")
private int maxWait;
@Value("${druid.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${druid.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Bean(initMethod = "init", destroyMethod = "close")
public DruidDataSource dataSource() {
DruidDataSource dataSource = new DruidDataSource();
// 基本属性 url、user、password
dataSource.setDriverClassName(driver);
dataSource.setUrl(url);
dataSource.setUsername(username);
dataSource.setPassword(password);
// 配置初始化大小、最小、最大
dataSource.setInitialSize(initialSize);
dataSource.setMinIdle(minIdle);
dataSource.setMaxActive(maxActive);
// 配置获取连接等待超时的时间
dataSource.setMaxWait(maxWait);
// 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
dataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
// 配置一个连接在池中最小生存的时间,单位是毫秒
dataSource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
dataSource.setValidationQuery("SELECT 'X'");
dataSource.setTestWhileIdle(true);
dataSource.setTestOnBorrow(false);
dataSource.setTestOnReturn(false);
// 是否打开PSCache,并且指定每个连接上PSCache的大小
dataSource.setPoolPreparedStatements(false);
dataSource.setMaxPoolPreparedStatementPerConnectionSize(20);
return dataSource;
}
@Bean
public SqlSessionFactory sqlSessionFactory(ApplicationContext applicationContext) throws Exception {
SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(dataSource());
// 设置 mapper xml
//sessionFactory.setMapperLocations(applicationContext.getResources("classpath:mapper/**/*.xml"));
return sessionFactory.getObject();
}
@Bean
public PlatformTransactionManager txManager() {
return new DataSourceTransactionManager(dataSource());
}
}
9、 基于druid和jdbc配置的属性文件(数据库应用的是mysql)
druid.driverClassName=com.mysql.jdbc.Driver
druid.url=jdbc:mysql://127.0.0.1:3306/db_findit?useUnicode=true&characterEncoding=UTF-8&useSSL=false
druid.username=root
druid.password=root
druid.initialSize=10
druid.minIdle=6
druid.maxActive=50
druid.maxWait=60000
druid.timeBetweenEvictionRunsMillis=60000
druid.minEvictableIdleTimeMillis=300000
druid.validationQuery=SELECT 'x'
druid.testWhileIdle=true
druid.testOnBorrow=false
druid.testOnReturn=false
druid.poolPreparedStatements=false
druid.maxPoolPreparedStatementPerConnectionSize=20
druid.filters=wall,stat
10、mapper.xml文件
说明:这里使用的是xml好像并不符合全配置的本意,但是在mabatis使用的灵活性上来看,如果使用注解的形式并不合适。并且官方也不建议使用javaConfig的形式,况且用java直接写sql也并不是什么优雅的事,虽然官方提供了sqlbuilder, 我还是认为这是一件很愚蠢的事。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.cogitationsoft.findit.mapper.DemoMapper">
<insert id="insert" parameterType="com.cogitationsoft.findit.pojo.DemoDO">
insert into t_demo (id, no, name)
values (#{id}, #{no}, #{name})
</insert>
</mapper>
这里只用了一个插入的方法。
关于配置的东西到这里其实就完成了,才疏学浅,如果有大神看见问题还请指正。下面是github的链接, 可以看完整的代码。
https://github.com/WHXGIT/demo
因同步时出现问题, 请把所有文件放入到findIt文件夹下用idea打开项目。
**粗体** _斜体_ [链接](http://example.com) `代码` - 列表 > 引用
。你还可以使用@
来通知其他用户。