SpringBoot无XML配置1
SpringBoot,自己研究了好几天,以前也是没有接触过这类的框架,不过原理吧,也就是那么些个原理,毕竟都是Spring开源下的子框架。
好了,回归正题,今天晚上研究了好久,写出来了无配置文件的javaConfig配置,Demo集成了SpringMvc + mybatis + boot ,里面也含有hibernate的core包,用来生成数据库表结构的。
首先 ,添加如下boot官方提供的依赖包:
1 <dependency> 2 <groupId>org.springframework.boot</groupId> 3 <artifactId>spring-boot-starter-web</artifactId> 4 </dependency> 5 <dependency> 6 <groupId>org.mybatis.spring.boot</groupId> 7 <artifactId>mybatis-spring-boot-starter</artifactId> 8 <version>1.1.1</version> 9 </dependency> 10 <!-- jpa--> 11 <dependency> 12 <groupId>org.springframework.boot</groupId> 13 <artifactId>spring-boot-starter-data-jpa</artifactId> 14 <version>1.5.7.RELEASE</version> 15 </dependency>
上面的就是配置中所需要的架包,因为本demo体现的是无配置文件,所以demo里不会有什么配置文件(yaml除外)
我使用的数据源是阿里的Druid 另外还有分页的架包以及mybatis整合spring的架包
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.2.1</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.0</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
jar包现在已经分配完毕(注意jar包的版本号,个人发现很多问题都出在了jar包冲突或者版本不一致的身上了)
本demo 演示的编辑工具是 IDEA 因为我创建的是springboot项目,所以编辑器会自动给我生成了application.yml
下来我贴上这个内容
server:
port: 8081
context-path: /
#开启spring AOP配置
aop:
auto: true
proxy-target-class: true
# jpa 配置
# jpa:
# show-sql: true
## open-in-view: true
# hibernate:
# ddl-auto: update
#mybatis:
# type-aliases-package: com.example.model
# mapper-locations: classpath:mapper/*.xml
# configuration:
# use-new-id-generator-mappings:
注:数据源的配置也可以放在 yml文件里,也很方便,因为本demo演示的是在javaConfig里面配置,所以就没有配置在yml里面。
下来创建配置文件(jdbc.properties以及 javaConfig )
jdbc.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&autoReconnect=true jdbc.user=root jdbc.password= #jdbc.driver=com.mysql.jdbc.Driver jdbc.initialSize=5 jdbc.minIdle=1 jdbc.maxActive=10 jdbc.filters=stat
这和普通大多数项目的一样,可以粘过来!
现在,我来开始配置 数据源 以及 业务层配置
package com.example.config; import javax.sql.DataSource; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import java.util.Properties; /** * 配置业务层 */ @Configuration//配置的注解 @EnableTransactionManagement//事务管理的注解 @PropertySource("classpath:jdbc.properties")//属性扫描注解 public class SqlSessionFactoryConfig implements TransactionManagementConfigurer{ //创建全局数据源 protected DataSource dataSource; //mybatis配置 private static String Mybatis_Config = "mybatis-config.xml"; //类的别名 private static String ALIASMODEL = "com.example.model"; //mapper 包的位置 private static String MAPPERPATH = "com.example.mapper"; //mapper.xml 编写sql的文件 private static String MAPPERXMLPATH = "mapper/*.xml"; private static String SQLSESSIONBEAN = "sqlSessionFactoryBean"; /** * 配置数据源
先去jdbc.properties里扫描 然后进行配置 * @return */ @Bean(name = "sqlSessionFactory") public SqlSessionFactory sqlSessionFactoryBean( @Value("${jdbc.url}")String url, @Value("${jdbc.user}")String username, @Value("${jdbc.password}")String password) { SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean(); try { DruidDataSource dataSource = new DruidDataSource(); dataSource.setUrl(url); dataSource.setUsername(username); dataSource.setPassword(password); this.dataSource = dataSource; sqlSessionFactory.setDataSource(dataSource); //设置mybatis sqlSessionFactory.setConfigLocation(new ClassPathResource(Mybatis_Config)); //设置模型类别名 sqlSessionFactory.setTypeAliasesPackage(ALIASMODEL); //配置分页插件 PageHelper pageHelper = new PageHelper(); Properties properties = new Properties(); properties.setProperty("dialect","mysql"); properties.setProperty("offsetAsPageNum","true"); properties.setProperty("rowBoundsWithCount","true"); properties.setProperty("pageSizeZero", "true");//分页尺寸为0时查询所有纪录不再执行分页 properties.setProperty("reasonable", "true");//页码<=0 查询第一页,页码>=总页数查询最后一页 properties.setProperty("supportMethodsArguments", "true");//支持通过 Mapper 接口参数来传递分页参数 pageHelper.setProperties(properties); sqlSessionFactory.setPlugins(new Interceptor[]{pageHelper}); //添加XML目录 ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); //*.mapper.xml的地址(根据你的项目自行修改) sqlSessionFactory.setMapperLocations(resolver.getResources(MAPPERXMLPATH)); //设置mapper sql文件的扫描路径 return sqlSessionFactory.getObject(); } catch (Exception e) { e.printStackTrace(); return null; } } /** * 配置数据模板 * @param sqlSessionFactory * @return */ @Bean public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory){ return new SqlSessionTemplate(sqlSessionFactory); } /** * Spring整合Mapper * @return */ @Bean public MapperScannerConfigurer getMapperScannerConfigurer(){ MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer(); mapperScannerConfigurer.setSqlSessionFactoryBeanName(SQLSESSIONBEAN); //*.mapper(*.dao)的包名(根据你的项目自行修改) mapperScannerConfigurer.setBasePackage(MAPPERPATH); //配置通用Mapper,详情请查阅官方文档 Properties properties = new Properties(); //tk.mybatis.mapper.common.Mapper properties.setProperty("mappers", "tk.mybatis.mapper.common.Mapper"); properties.setProperty("notEmpty", "false");//insert、update是否判断字符串类型!='' 即 test="str != null"表达式内是否追加 and str != '' //使用的数据库类型名称(MySQL,Oracle,Postgresql...) properties.setProperty("IDENTITY", "MySQL");// mapperScannerConfigurer.setProperties(properties); return mapperScannerConfigurer; }
/** * 事务的控制管理 将数据源注入事务内 * @return */
@Override public PlatformTransactionManager annotationDrivenTransactionManager() { return new DataSourceTransactionManager(dataSource); } }
好了,业务层的配置完了,简单吧!!!
嘿嘿嘿,其实这个和spring的applicationContext.xml配置完全是一样的,我们都知道 Spring最大的特性就是 IOC和AOP,因此只需要将以前配置的bean的class拿到,然后用bean的特定实现类进行set其配置就哦了!!!
web Controller层也是一样的。
无非是照猫画虎,照鸡画猴
下来,我直接贴代码吧!
package com.example.config; import java.util.List; @Configuration public class WebMvcConfig { //配置视图解析器 @Bean public ViewResolver viewResolver(){ InternalResourceViewResolver resolver = new InternalResourceViewResolver(); resolver.setPrefix("/WEB-INF/view/"); resolver.setSuffix(".ftl"); resolver.setViewClass(org.springframework.web.servlet.view.JstlView.class); return resolver; } //上传文件配置 @Bean(name = "multipartResolver") public CommonsFileUploadSupport commonsFileUploadSupport(){ CommonsFileUploadSupport resolver = new CommonsMultipartResolver(); resolver.setMaxInMemorySize(40960); resolver.setMaxUploadSize(10485760000L); return resolver; } //异常解析拦截器 过滤 @Bean public HandlerInterceptor interceptor(){ HandlerInterceptor interceptor = new ExceptionInterceptor(); List<MappedInterceptor> interceptors = new ArrayList<>(); MappedInterceptor mappedInterceptor = new MappedInterceptor(new String []{ "/js/**","/image/**","/uplaod/**","/**/*.jpeg","/**/*.jpg" ,"/**/*.gif","/**/*.svg","/**/*.html" },interceptor); interceptors.add(mappedInterceptor); return interceptor; } }
有没有和SpringMVC的配置文件一样?
可以和以前的SpringMVC的配置来对比一下,下面我贴上SpringMVC的配置XML文件 大家来对比看看哈~~
<mvc:interceptors> <mvc:interceptor> <!-- 对所有的请求拦截使用/** ,对某个模块下的请求拦截使用:/myPath/* --> <mvc:mapping path="/**" /> <mvc:exclude-mapping path="/**/*.html" /> <mvc:exclude-mapping path="/**/*.css" /> <mvc:exclude-mapping path="/**/*.js" /> <mvc:exclude-mapping path="/**/*.jpeg" /> <mvc:exclude-mapping path="/**/*.gif" /> <mvc:exclude-mapping path="/**/*.png" /> <mvc:exclude-mapping path="/**/*.eot" /> <mvc:exclude-mapping path="/**/*.otf" /> <mvc:exclude-mapping path="/**/*.svg" /> <mvc:exclude-mapping path="/**/*.ttf" /> <mvc:exclude-mapping path="/**/*.woff" /> <mvc:exclude-mapping path="/**/*.woff2" /> <ref bean="exceptionInterceptor" /> </mvc:interceptor> </mvc:interceptors> <bean name="exceptionInterceptor" class="yf.wuchw.web.ExceptionInterceptor" /> <mvc:default-servlet-handler /> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8"></property> <property name="maxUploadSize" value="10485760000"></property> <property name="maxInMemorySize" value="40960"></property> </bean> <!--配置jsp显示ViewResolver --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/jsp" /> <property name="suffix" value=".jsp" /> </bean>
有没有一种照鸡画猴的感觉,嘿嘿,至于其它的注解配置,都和Spring一样的。Controller 层 加上@Controller Service 加上@Service
注意:Mapper 层要加上 @Mapper
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