Spring MVC 框架搭建配置方法及详解

<!-- 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> <!-- spring配置 --> <!-- ====================================== --> <listener> <listener-class>org.springframework.web.context.contextloaderlistener</listener-class> </listener> <!-- 指定spring bean的配置文件所在目录。默认配置在web-inf目录下 --> <context-param> <param-name>contextconfiglocation</param-name> <param-value>classpath:config/applicationcontext.xml</param-value> </context-param>

<?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 <a href="http://www.springframework.org/schema/context/spring-context-3.0.xsd">http://www.springframework.org/schema/context/spring-context-3.0.xsd</a>"> <!-- 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="controller"></context:component-scan> <!-- 完成请求和注解pojo的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.annotationmethodhandleradapter" /> <!-- 对转向页面的路径解析。prefix：前缀， suffix：后缀 --> <bean class="org.springframework.web.servlet.view.internalresourceviewresolver" p:prefix="/jsp/" p:suffix=".jsp" /> </beans>

<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemalocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"> <!-- 采用hibernate.cfg.xml方式配置数据源 --> <bean id="sessionfactory" class="org.springframework.orm.hibernate3.localsessionfactorybean"> <property name="configlocation"> <value>classpath:config/hibernate.cfg.xml</value> </property> </bean> <!-- 将事务与hibernate关联 --> <bean id="transactionmanager" class="org.springframework.orm.hibernate3.hibernatetransactionmanager"> <property name="sessionfactory"> <ref local="sessionfactory"/> </property> </bean> <!-- 事务（注解 ）--> <tx:annotation-driven transaction-manager="transactionmanager" proxy-target-class="true"/> <!-- 测试service --> <bean id="loginservice" class="service.loginservice"></bean> <!-- 测试dao --> <bean id="hibernatedao" class="dao.hibernatedao"> <property name="sessionfactory" ref="sessionfactory"></property> </bean> </beans>

package controller; import javax.servlet.http.httpservletrequest; import org.springframework.stereotype.controller; import org.springframework.web.bind.annotation.requestmapping; import org.springframework.web.bind.annotation.requestparam; import entity.user; @controller //类似struts的action public class testcontroller { @requestmapping("test/login.do") // 请求url地址映射，类似struts的action-mapping public string testlogin(@requestparam(value="username")string username, string password, httpservletrequest request) { // @requestparam是指请求url地址映射中必须含有的参数(除非属性required=false) // @requestparam可简写为：@requestparam("username") if (!"admin".equals(username) || !"admin".equals(password)) { return "loginerror"; // 跳转页面路径（默认为转发），该路径不需要包含spring-servlet配置文件中配置的前缀和后缀 } return "loginsuccess"; } @requestmapping("/test/login2.do") public modelandview testlogin2(string username, string password, int age){ // request和response不必非要出现在方法中，如果用不上的话可以去掉 // 参数的名称是与页面控件的name相匹配，参数类型会自动被转换 if (!"admin".equals(username) || !"admin".equals(password) || age < 5) { return new modelandview("loginerror"); // 手动实例化modelandview完成跳转页面（转发），效果等同于上面的方法返回字符串 } return new modelandview(new redirectview("../index.jsp")); // 采用重定向方式跳转页面 // 重定向还有一种简单写法 // return new modelandview("redirect:../index.jsp"); } @requestmapping("/test/login3.do") public modelandview testlogin3(user user) { // 同样支持参数为表单对象，类似于struts的actionform，user不需要任何配置，直接写即可 string username = user.getusername(); string password = user.getpassword(); int age = user.getage(); if (!"admin".equals(username) || !"admin".equals(password) || age < 5) { return new modelandview("loginerror"); } return new modelandview("loginsuccess"); } @resource(name = "loginservice") // 获取applicationcontext.xml中bean的id为loginservice的，并注入 private loginservice loginservice; //等价于spring传统注入方式写get和set方法，这样的好处是简洁工整，省去了不必要得代码 @requestmapping("/test/login4.do") public string testlogin4(user user) { if (loginservice.login(user) == false) { return "loginerror"; } return "loginsuccess"; } }

package controller; import org.springframework.stereotype.controller; import org.springframework.web.bind.annotation.requestmapping; import org.springframework.web.bind.annotation.requestmethod; @controller @requestmapping("/test2/login.do") // 指定唯一一个*.do请求关联到该controller public class testcontroller2 { @requestmapping public string testlogin(string username, string password, int age) { // 如果不加任何参数，则在请求/test2/login.do时，便默认执行该方法 if (!"admin".equals(username) || !"admin".equals(password) || age < 5) { return "loginerror"; } return "loginsuccess"; } @requestmapping(params = "method=1", method=requestmethod.post) public string testlogin2(string username, string password) { // 依据params的参数method的值来区分不同的调用方法 // 可以指定页面请求方式的类型，默认为get请求 if (!"admin".equals(username) || !"admin".equals(password)) { return "loginerror"; } return "loginsuccess"; } @requestmapping(params = "method=2") public string testlogin3(string username, string password, int age) { if (!"admin".equals(username) || !"admin".equals(password) || age < 5) { return "loginerror"; } return "loginsuccess"; } }

package controller; import org.springframework.stereotype.controller; import org.springframework.web.bind.annotation.requestmapping; @controller @requestmapping("/test3/*") // 父request请求url public class testcontroller3 { @requestmapping("login.do") // 子request请求url，拼接后等价于/test3/login.do public string testlogin(string username, string password, int age) { if (!"admin".equals(username) || !"admin".equals(password) || age < 5) { return "loginerror"; } return "loginsuccess"; } }