springmvc +dubbo项目切换成spring boot启动

最近对老项目架构上进行一次改动，将原来springmvc + dubbo 切换成spring boot jar启动方式

**1.在pom.xml添加springboot依赖 并删除之前spring所有依赖 这里使用的版本是1.5.2.RELEASE 对应spring版本4.3.7**

<modelVersion>4.0.0</modelVersion> <groupId>com.hd.web</groupId> <artifactId>hd_web</artifactId> <version>1.0.0</version> <packaging>jar</packaging> <name>hd_web</name> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.2.RELEASE</version> </parent> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>1.4.2.RELEASE</version> <dependencies> <!-- spring热部署 --> <dependency> <groupId>org.springframework</groupId> <artifactId>springloaded</artifactId> <version>1.2.6.RELEASE</version> </dependency> </dependencies> </plugin>

如果有redis依赖

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-redis</artifactId> <version>1.4.7.RELEASE</version> </dependency>

如果有jpa依赖

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> <version>${spring.boot.version}</version> </dependency>

2.将web.xml 里的servlet filter进行改造 listener 改造前

<listener> <listenerclass>com.hdb.modules.hdbOnline.servlet.LoginSessionListener</listener-class> </listener>

改造后 找到该类添加@WebListener 注解即可

filter 改造前

<filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>

改造后

@Bean public FilterRegistrationBean registrationFilterBean() { FilterRegistrationBean registration = new FilterRegistrationBean(); registration.setFilter(characterEncodingFilter()); registration.addUrlPatterns("/*"); return registration; } @Bean public CharacterEncodingFilter characterEncodingFilter() { CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter(); characterEncodingFilter.setEncoding("UTF-8"); characterEncodingFilter.setForceEncoding(true); return characterEncodingFilter; }

servlet 改造前

<servlet> <servlet-name>ValidateCodeServlet</servlet-name> <servlet-class>com.hdb.common.servlet.ValidateCodeServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>ValidateCodeServlet</servlet-name> <url-pattern>/servlet/validateCodeServlet</url-pattern> </servlet-mapping>

改造后 找到该类

@WebServlet(name="ValidateCodeServlet",urlPatterns="/servlet/validateCodeServlet")

错误 页面配置 改造前

<error-page> <exception-type>java.lang.Throwable</exception-type> <location>/WEB-INF/views/error/500.jsp</location> </error-page> <error-page> <error-code>500</error-code> <location>/WEB-INF/views/error/500.jsp</location> </error-page>

改造后

/** * 错误 页面配置 * @return */ @Bean public EmbeddedServletContainerCustomizer containerCustomizer() { return new EmbeddedServletContainerCustomizer() { @Override public void customize(ConfigurableEmbeddedServletContainer container) { ErrorPage errorPage = new ErrorPage(Throwable.class, "/WEB-INF/views/error/500.jsp"); ErrorPage error400Page = new ErrorPage(HttpStatus.BAD_REQUEST, "/WEB-INF/views/error/404.jsp"); ErrorPage error404Page = new ErrorPage(HttpStatus.NOT_FOUND, "/WEB-INF/views/error/404.jsp"); ErrorPage error405Page = new ErrorPage(HttpStatus.METHOD_NOT_ALLOWED, "/WEB-INF/views/error/404.jsp"); ErrorPage error500Page = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/WEB-INF/views/error/500.jsp"); container.addErrorPages(errorPage, error400Page, error404Page, error405Page, error500Page); } }; }

3.spring-mvc.xml 文件中的拦截器 视图解析器的改造 添加一个Configuration类 扩展WebMvcConfigurerAdapter类，然后重写addInterceptors方法添加拦截器

重写addResourceHandlers 方法添加对于静态资源的处理 重写configureViewResolvers方法添加视图解析器

4.jar包启动是不支持jsp的，因此，加入几项支持 spring-boot-maven-plugin 版本1.4.2.RELEASE 高版本好像不太支持

将webapp的文件打包后放到META-INF下，否则访问不到

<resource> <directory>src/main/webapp</directory> <targetPath>META-INF/resources</targetPath> <includes> <include>**/**</include> </includes> </resource>

添加两个依赖，但是scope 去掉

<dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency>

目前只是改了启动方式，其中包括对于mq、hibernate lucene、dubbo都是通过引入xml实例化的，后期慢慢研究如何进行整合。