SSM框架整合
1.明确目的
- 主次分明,spring整合其他框架
- spring,springmvc,mybatis
2.springMVC配置
<!-- 开启扫描,扫描controller包中的@Controller注解,注入spring容器中 -->
<context:component-scan base-package="com.spring.demo.controller"/>
<!--自动配置处理映射器和适配器,支持注解@RequestBody功能强大,配置后可以省略RequestMappingHandlerMapping,RequestMappingHandlerAdapter-->
<mvc:annotation-driven/>
<!--相当于配置以下两个bean-->
<!--处理器映射器-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
<!--处理器适配器-->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
<!--<mvc:view-resolvers>
<mvc:jsp prefix="/WEB-INF/jsp/" suffix=".jsp"></mvc:jsp>
</mvc:view-resolvers>-->
<!--开启aop注解,因为字父容器所以要在springmvc中配置,否则无法在controller包中使用切面-->
<aop:aspectj-autoproxy />
<!--释放静态资源-->
<!--<mvc:resources mapping="/static/**" location="/static/"/>-->
<mvc:default-servlet-handler />
<!--文件上传,解析器-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!--设置文件上传大小,字节为单位-->
<property name="maxUploadSize" value="" />
</bean>
在web.xml中配置springMVC
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<!--如果拦截 /* 会导致返回的页面是代码-->
<url-pattern>/</url-pattern>
</servlet-mapping>
3.mvc全局异常处理(实现接口:HandlerExceptionResolver)
//全局异常处理类
public class demo implements HandlerExceptionResolver {
/**
*
* @param httpServletRequest 当前请求对象
* @param httpServletResponse 当前响应对象
* @param o 请求访问控制器中方法的对象
* @param e 错误异常
* @return
*/
@Override
public ModelAndView resolveException(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) {
return null;
}
}
<!--mvc配置文件中注入,当程序出现异常未处理时自动调用处理定义好的异常处理方法-->
<bean class="com.spring.demo.interceptor.MyHandlerExceptionResolver"/>
4.拦截器(实现接口:HandlerInterceptor)
<!--拦截器-->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/*"/>
<!--注入拦截器-->
<bean class="com.mds.interceptor.MvcHandler" />
</mvc:interceptor>
</mvc:interceptors>
public class MyhandlerIntercephtor implements HandlerInterceptor {
//拦截之前
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
return false; //放行 return true
}
//放行后
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
//响应完毕
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}
5.过滤器(实现接口:Filter)
5.1 拦截所有web请求,拦截器只拦截项目中的请求
public class LoginFilter implements Filter {
ArrayList<String> noFilter = new ArrayList<>();
/**
* 在tomcat启动时执行
* @param filterConfig
* @throws ServletException
*/
@Override
public void init(FilterConfig filterConfig) throws ServletException {
System.out.println("LoginFilter.init ------->过滤器初始化");
noFilter.add("/test");
noFilter.add("/error");
}
/**
* 项目启动后执行
* @param servletRequest servlet请求的对象
* @param servletResponse servlet的响应对象
* @param filterChain
* @throws IOException
* @throws ServletException
*/
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
System.out.println("过滤器接收请求");
/*System.out.println("请求的类型:"+request.getAuthType());
System.out.println("请求的项目:"+request.getContextPath());
System.out.println("以什么方式请求:"+request.getMethod());
System.out.println("请求的全路径:"+request.getRequestURL());
System.out.println("请求的接口:"+request.getServletPath());*/
String path = request.getServletPath();
AntPathMatcher antPathMatcher = new AntPathMatcher();
for (int i = 0; i < noFilter.size(); i++) {
//通过AntPathMatcher对象验证,请求是否通过
if (antPathMatcher.match(path,noFilter.get(i))){
//放行
filterChain.doFilter(servletRequest,servletResponse);
}
}
//重定向到错误页面
response.sendRedirect("error");
System.out.println("过滤器请求响应");
}
/**
* 服务器关闭之前执行
*/
@Override
public void destroy() {
System.out.println("过滤器销毁");
}
}
5.2 在web.xml中配置
<filter>
<filter-name>LoginFilter</filter-name>
<filter-class>com.spring.demo.filter.LoginFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>LoginFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
6.applicationContext中的配置
6.1 把连接mysql的配置转移到properties文件中
jdbc.url=jdbc:mysql://localhost:3306/sdb?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC
jdbc.username=root
jdbc.password=123456
jdbc.driver=com.mysql.jdbc.Driver
<!--开启扫描-->
<context:component-scan base-package="com.spring.demo">
<!--不扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!--引入properties配置文件-->
<context:property-placeholder location="classpath:/jdbc.properties"/>
<!--数据库连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="url" value="${jdbc.url}"/>
</bean>
<!--整合mybatis-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--给entity包下的实体取别名-->
<property name="typeAliasesPackage" value="com.mds.entity" />
<!--操作数据库的文件-->
<property name="mapperLocations" value="classpath:/mapper/*Mapper.xml"/>
</bean>
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.mds.mapper" />
</bean>
<!--开启事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
6.2 web.xml中配置applicationContext.xml
<!--spring核心配置文件,servlet启动加载-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
7.整合日志
需要jar包
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>2.0.0-alpha1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
在resource文件下创建log4j.properties文件
# resources # resources⽂件夹根⽬录下
### 配置根
log4j.rootLogger =debug,console
### ⽇志输出到控制台显示
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} %-5p %c{1}:%L - %m%n
8.spring相关jar
<!--spring核心依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.3.4</version>
</dependency>
<!--spring aop核心依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<dependency>
<groupId>aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.5.4</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
<!--数据源-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.4</version>
</dependency>
<!--web依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.12.RELEASE</version>
</dependency>
<!--mybatis相关依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
<!--servlet el表达式-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--json数据格式-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.11.0</version>
</dependency>
<!--整合日志-->
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>2.0.0-alpha1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
Q.E.D.