配置spring mvc ,写这篇文章的时候spring已经出了4.0 这里还是用稳定的3.2.7.RELEASE,先把spring和freemarker配置好
1.spring mvc配置
在web.xml中添加
<!-- Spring MVC配置 --> <!-- ====================================== --> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 可以自定义servlet.xml配置文件的位置和名称,默认为WEB-INF目录下,名称为[<servlet-name>]-servlet.xml,如spring-servlet.xml <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring-servlet.xml</param-value> 默认 </init-param> --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping>
sping通过DispatherServlet做分发,如果不指定配置文件就是项目名-servlet.xml,这里已经制定了spring-servlet.xml
这里再看spring-servlet.xml的配置
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <!-- 启用spring mvc 注解 --> <context:annotation-config/> <!-- 设置使用注解的类所在的jar包 --> <context:component-scan base-package="com.spring.controller"></context:component-scan> <!-- 完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/> <!-- freemarker的配置 --> <bean id="freemarkerConfigurer" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"> <property name="templateLoaderPath" value="/WEB-INF/view/" /> <property name="defaultEncoding" value="GBK" /> <property name="freemarkerSettings"> <props> <prop key="template_update_delay">10</prop> <prop key="locale">zh_CN</prop> <prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop> <prop key="date_format">yyyy-MM-dd</prop> <prop key="number_format">#.##</prop> </props> </property> </bean> <!-- FreeMarker视图解析 如返回userinfo。。在这里配置后缀名ftl和视图解析器。。 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView" /> <property name="suffix" value=".ftl" /> <property name="contentType" value="text/html;charset=GBK" /> <property name="exposeRequestAttributes" value="true" /> <property name="exposeSessionAttributes" value="true" /> <property name="exposeSpringMacroHelpers" value="true" /> </bean> </beans>
<bean id="freemarkerConfigurer"
class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">这个地方写入之后就报找不到类,原来光引用freemarker的类和spring-framework的类还不够,还少一个spring-context-support,添加这个类后正常了
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter 这里引用的spring版本为3.2.7 这个类已经是废弃的了,源码里注释了
* * @deprecated in Spring 3.2 in favor of * {@link org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter RequestMappingHandlerAdapter} */ @Deprecated public class AnnotationMethodHandlerAdapter extends WebContentGenerator implements HandlerAdapter, Ordered, BeanFactoryAware
既然说了,那就用最新的,稍微找了下,没找到RequestMappingHandlerAdapter有什么区别,望指教
既然都配置好了,剩下就是写个controller了
package com.spring.controller; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @Controller @RequestMapping("/message") public class IndexController { @RequestMapping(value = "/index", method = RequestMethod.GET) public String index(HttpServletRequest request, HttpServletResponse response,ModelMap modelMap) { modelMap.put("some", "spring freemarker模板终能使用"); return "index"; } }
然后是freemarker模板,非常简单,文件放到/WEB-INF/view/下
<html> <body> <h2>freemarker</h2> <div>${some}</div> </body> </html>
既然配置好了,就开始启动测试下,然后就出现了各种问题。。。
首先就是几个类找不到,最经典的javax.servlet.http.HttpServletResponse和javax.servlet.http.HttpServletRequest 本来就是servlet-api.jar包里的,由于公司有私服,添加了几个都不对,先把现在正确的pom文件发下
<?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>SpringMvc</groupId> <artifactId>SpringMvc</artifactId> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>org.apache.maven</groupId> <artifactId>maven-plugin-api</artifactId> //这个经过我的测试,发现根本不用添加 <version>3.1.0</version> </dependency> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>servlet-api</artifactId> //这个经过我的测试,发现根本不用添加 <version>6.0.37</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.2.7.RELEASE</version> </dependency> <dependency> <groupId>servletapi</groupId> <artifactId>servlet-api</artifactId> //这个是主要的servlet-api,在公共maven仓库上找了半天都没找对,因为我搜索的时候都是搜索的servlet-api,后来才知道直接搜servletapi就对了 <version>2.4-20040521</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.6.RELEASE</version> </dependency> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.20</version> </dependency> <dependency> <groupId>org.springframework.ws</groupId> <artifactId>spring-ws-core</artifactId> <version>2.1.4.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.mortbay.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <configuration> <scanIntervalSeconds>1</scanIntervalSeconds> <stopPort>9966</stopPort> <stopKey>foo</stopKey> <connectors> <connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector"> <port>7777</port> <maxIdleTime>60000</maxIdleTime> </connector> </connectors> <webAppSourceDirectory> ${basedir}/webapp </webAppSourceDirectory> <webAppConfig> <contextPath>/spring</contextPath> </webAppConfig> </configuration> </plugin> </plugins> </build> </project>
终于知道了添加servlet-api的包应该是哪个,真是郁闷http://www.mvnrepository.com/artifact/servletapi/servlet-api/2.4-20040521
启动成功了之后,访问地址http://127.0.0.1:7777/spring/message/index.do,报错
javax.servlet.ServletException: No adapter for handler [controller.UserInfoController@1470933]: The DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler
之前完全没遇上过这种错,上网查说要加了两个adapter,就可以了
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
<bean class="org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter"/>
发现不行,后来修改了spring-servlet.xml 把这里又改回来了
<!-- 完成请求和注解POJO的映射 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />就可以了
废弃的方法就废弃吧,先解决问题再说
在后面就是想传对象到freemarker里,原来我记得使用过modelandview,但是好像要添加什么配置,因为使用这个访问不到放到modelandview里的对象,所以有换成了modelmap,终于完成了
这次主要目的就是在intellij上配置一个maven 的web项目,在加上spring mvc和freemarker,没想到出现这么多的问题,使用jetty插件的目的是在项目启动期间,修改freemarker模板能即时生效,而
使用独立tomcat的话,还得部署才行,而插件很方便。这些东西配置好之后,就该加上mybatis和mongodb了