前言:對於使用配置文件已經有了必定經驗的初學者來講,應該體驗一下使用註解做爲配置文件的感覺,一下我用本身的經驗來配置一份最簡單但同時也全面的配置。
目錄結構應該是搭建項目的說明中首先說明的東西,這是涉及到學習者對總體結構瞭解的一個前提。java
<?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>${freemarker.version}</version> </dependency> <!-- Jackson Json處理工具包 --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${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>
這裏須要作一個說明,由於在全註解配置的配置文件中, web.xml 並非必須要的,但也能夠保留,而且web.xml也能夠作簡單的應用。mysql
<?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>
若是你保留了web.xml配置文件那麼必須把 metadata-complete設置爲fasle。能夠設置welcome-file來做爲根目錄的首頁, 固然你也能夠經過Controller去設置。git
官方文檔中有這樣的說明,當你是用Log4j2的時候會自動加載classpath下的名爲圖片中的那些配置文件,而且按照1~10是有優先級的,取名的時候要注意這個問題,而且在2.x開始到2.4是不支持properties的配置的,默認使用xml配置,在2.4以後又新加回了properties配置。詳細配置請看官方文檔。github
#屬性表示log4j2自己的日誌信息打印級別 status = DEBUG #若是犯錯,url,路徑等結果輸出到strerr中 dest = err #log4j 2.6 以前和 以後的 配置不一樣 ,2.6 以後 ,當第一次使用 identifiers 列表時, #再也不須要 指定 name。可是若是你要使用多個,仍然要指定 name = PropertiesConfig # 指定日誌文件的位置和文件名稱,以便記錄多份日誌時,直接引用 property.filename = E:/target/logs # 級別過濾(過濾日誌記錄) filter.threshold.type = ThresholdFilter # 只記錄debug級別以上的日誌,大小寫無關:(ALL<)TRACE<DEBUG<INFO<WARN<ERROR<FATAL(<OFF) filter.threshold.level = debug # 控制檯類型的日誌輸出源 appender.console.type = Console # 輸出源的名稱 appender.console.name = STDOUT # 輸出佈局類型 appender.console.layout.type = PatternLayout # 控制檯輸出編碼 appender.console.layout.charset=UTF-8 # 輸出模板 appender.console.layout.pattern =%d %p %C{1.} [%t] %m%n appender.console.filter.threshold.type = ThresholdFilter appender.console.filter.threshold.level = debug # 文件滾動記錄類型的日誌輸出源 appender.rolling.type = RollingFile # 指定當前滾動輸出源的名稱 appender.rolling.name = RollingFile # 指定當前日誌文件的位置和文件名稱,能夠單獨指定,也能夠直接引用以前定義過得property.filename參數 appender.rolling.fileName = ${filename}/findit.log # 指定當發生Rolling時,文件的轉移和重命名規則 appender.rolling.filePattern = ${filename}/findit-%d{MM-dd-yy-HH-mm-ss}-%i.log.gz # 滾動記錄輸出源佈局類型 appender.rolling.layout.type = PatternLayout # 日誌文件輸出編碼 appender.rolling.layout.charset=UTF-8 # 滾動記錄輸出模板 appender.rolling.layout.pattern = %d %p %C{1.} [%t] %m%n # 指定記錄文件的封存策略,該策略主要是完成周期性的日誌文件封存工做 appender.rolling.policies.type = Policies # 基於時間的觸發策略(TriggeringPolicy) appender.rolling.policies.time.type = TimeBasedTriggeringPolicy # 當前記錄週期爲每2秒生成一個文件,若是filePattern中配置的文件重命名規則是target/rolling2/test1-%d{yyyy-MM-dd HH-mm}-%i,最小的時間粒度是mm,即分鐘,TimeBasedTriggeringPolicy指定的size是1,結合起來就是每2分鐘生成一個新文件。若是改爲%d{yyyy-MM-dd HH},最小粒度爲小時,則每2個小時生成一個文件。 appender.rolling.policies.time.interval = 2 # 是否對封存時間進行調製。若modulate=true,則封存時間將以0點爲邊界進行偏移計算。好比,modulate=true,interval=4hours,那麼假設上次封存日誌的時間爲03:00,則下次封存日誌的時間爲04:00,以後的封存時間依次爲08:00,12:00,16:00 appender.rolling.policies.time.modulate = true # 基於日誌文件體積的觸發策略。 appender.rolling.policies.size.type = SizeBasedTriggeringPolicy # 當日志文件體積大於size指定的值時,觸發Rolling appender.rolling.policies.size.size=100MB # 文件封存的覆蓋策略(RolloverStrategy) appender.rolling.strategy.type = DefaultRolloverStrategy # 生成分割(封存)文件的個數,默認爲5(-1,-2,-3,-4,-5) appender.rolling.strategy.max = 5 # 設置字符集編碼 appender.rolling.Encoding=UTF-8 # 記錄器名稱 logger.rolling.name = com.example.my.app # 設置打印級別(日誌級別) logger.rolling.level = debug # 是否向上級logger傳遞打印信息 logger.rolling.additivity = false # 關聯名稱爲RollingFile的輸出源(appender) logger.rolling.appenderRef.rolling.ref = RollingFile # 根記錄器,全部記錄器的父輩 rootLogger.level = info # 關聯名稱爲STDOUT的輸出源(appender) rootLogger.appenderRef.stdout.ref = STDOUT # 關聯名稱爲RollingFile的輸出源(appender) rootLogger.appenderRef.rolling.ref = RollingFile
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[]{"/"}; } }
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, 用於加載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{ // 內部類,用來排除 web 相關的包,由於這些包已經在 WebConfig 中導入了 public static class WebPackage extends RegexPatternTypeFilter { public WebPackage() { super(Pattern.compile("org\\.acherie\\.web")); } } }
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: * 〈配置視圖解析器〉 * * @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: * 〈靜態資源位置〉 * * @param: ResourceHandlerRegistry 靜態資源處理器註冊 * @return: void * @author: Andy * @date: 5/3/2018 4:45 PM */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/resources/**").addResourceLocations("/public-resources/"); } }
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(); // 基本屬性 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); // 配置獲取鏈接等待超時的時間 dataSource.setMaxWait(maxWait); // 配置間隔多久才進行一次檢測,檢測須要關閉的空閒鏈接,單位是毫秒 dataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis); // 配置一個鏈接在池中最小生存的時間,單位是毫秒 dataSource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis); dataSource.setValidationQuery("SELECT 'X'"); dataSource.setTestWhileIdle(true); dataSource.setTestOnBorrow(false); dataSource.setTestOnReturn(false); // 是否打開PSCache,而且指定每一個鏈接上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()); // 設置 mapper xml //sessionFactory.setMapperLocations(applicationContext.getResources("classpath:mapper/**/*.xml")); return sessionFactory.getObject(); } @Bean public PlatformTransactionManager txManager() { return new DataSourceTransactionManager(dataSource()); } }
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
說明:這裏使用的是xml好像並不符合全配置的本意,可是在mabatis使用的靈活性上來看,若是使用註解的形式並不合適。而且官方也不建議使用javaConfig的形式,何況用java直接寫sql也並非什麼優雅的事,雖然官方提供了sqlbuilder, 我仍是認爲這是一件很愚蠢的事。web
<?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> 這裏只用了一個插入的方法。
關於配置的東西到這裏其實就完成了,才疏學淺,若是有大神看見問題還請指正。下面是github的連接, 能夠看完整的代碼。
https://github.com/WHXGIT/demospring
因同步時出現問題, 請把全部文件放入到findIt文件夾下用idea打開項目。sql