SSM使用JavaConfig使用详细步骤~

悠悠 2023-11-02 07:18 127阅读 0赞

**JavaConfig-SSM步骤：**

1.pom.xml文件中导入jar包  
2.配置四个配置文件  
WebConfig<==>web.xml  
ApplicationContextConfig<==>applicationContext.xml (spring)  
WebMvcConfig<==>webmvc-servlet.xml (spring MVC)  
mybatis-config.xml<==>mybatis-config.xml (mybatis)  
3.DB 链接数据库  
4.生成pojo实体类  
5.创建mapper接口层  
6.创建service服务层  
7.创建controller控制层  
8.创建view视图页面层 webapp-->static(css)->view(jsp)...

配置文件详细信息：  
一、WebConfig文件(web.xml)  
1.实现WebApplicationInitializer接口，重写onStartup方法  
2.方法中配置  
1)配置DispatchServlet（SpringMVC启动类）  
AnnotationConfigWebApplicationContext ac01 = new AnnotationConfigWebApplicationContext();  
ac01.register(WebMvcConfig.class);  
DispatcherServlet dispatcherServlet = new DispatchServlet(ac01);  
ServletRegistration.Dynamic dynamic = servletContext.addServlet("springMvc",dispatcherServlet);  
dynamic.setLoadOnStartup(1);  
dynamic.addMapping("/");

2)配置ContextLoaderListener（spring启动类）  
AnnotationConfigWebApplicationContext ac02 = new AnnotationConfigWebApplicationContext();  
ac02.register(ApplicationContextConfig.class);  
servletContext.addListener(new ContextLoaderListener(ac02));

3)配置CharacterEncodingFilter（POST方式中文乱码）  
CharacterEncodingFilter encodingFilter = newCharacterEncodingFilter();  
encodingFilter.setEncoding("UTF-8");  
FilterRegistration.Dynamic dynamic = servletContext.addFilter("encoding",encodingFilter);  
dynamic.addMappingForUrlPatterns(null,false,"/\*");  
二、ApplicationContextConfig文件(applicationContext.xml)  
1.在类上添加注解  
@Controller、  
@ComponentScan(basePackages="org.bx.ssm.service")、 //扫描service包  
@EnableTransactionManagement //开启事务管理  
2.配置数据源Druid  
@Bean  
public DruidDataSource dataSource()\{  
DruidDataSource druidDataSource = new DruidDataSource(); //创建DruidDataSource数据源对象  
druidDataSource.setDriverClassName("com.mysql.jdbc.Driver"); //配置驱动  
druidDataSource.setUrl("jdbc:mysql:///his");  
druidDataSource.setUsername("root");  
druidDataSource.setPassword("root");  
return druidDataSource;  
\}  
3.配置SqlSessionFactoryBean  
@Bean  
public SqlSessionFactoryBean sqlSessionFactory()\{  
SqlSessionFactroyBean bean = new SqlSessionFactoryBean();  
bean.setDataSource(dataSource()); //引用数据源  
bean.setConfigLocation(new ClassPathResource("mybatis-config.xml"));  
Resource\[\] resoutces = \{new ClassPathResource(mapper/RoleMapper.xml)\};  
bean.setMapperLocations(resources);  
return bean;  
\}  
4.mapper扫描配置  
@Bean  
public MapperScannerConfigurer mapperScannerConfigurer()\{  
MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();  
mapperScannerConfigurer.setBasePackage("org.bx.ssm.mapper");  
return mapperScannerConfigurer;  
\}  
5.配置事务管理  
@Bean  
public DataSourceTransactionManager transactionManager()\{  
DataSourceTransactionManager transactionManager = new DataSourceTransactionManager();  
transactionManager.setDataSource(dataSource());  
return transactionManager;  
\}  
三、WebMvcConfig文件(webmvc-servlet.xml)  
1.在类上添加注解  
@Configuration、  
@EnableWebMvc、  
@ComponentScan(basePackages="org.bx.ssm.web") //扫描控制器  
并继承WebMvcConfigurerAdapter类  
2.配置viewResolver视图解析器  
@Bean  
public ViewResolver viewResolver()\{  
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();  
viewResolver.setPrefix("/WEB-INF/classes/views/");  
viewResolver.setSuffix(".jsp");  
return viewResolver;  
\}  
3.访问资源配置 > 重写addResourceHandlers方法  
public void addResourceHandlers(ResourceHandlerRegistry registry)\{  
registry.addResourceHandler("/webjars/\*\*").addResourceLocations("/webjars/");//访问的虚拟路径  
registry.addResourceHandler("/static/\*\*").addResourceLocations("/static/");//访问的静态资源  
\}  
四、mybatis-config.xml文件  
<settings>  
  
<setting name="mapUnderscoreToCamelCase" value="true"/>  
  
<setting name="autoMappingBehavior" value="FULL"/>  
  
<setting name="logImpl" value="LOG4J"/>  
</settings>