<!-- Spring MVC配置 -->
<!-- ====================================== -->
<servlet>
  <servlet-name>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <!-- 可以自定義servlet.xml配置文件的位置和名稱，默認(rèn)為WEB-INF目錄下，名稱為[<servlet-name>]-servlet.xml，如spring-servlet.xml
  <init-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring-servlet.xml</param-value>&nbsp; 默認(rèn)
  </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>
  <listenerclass>
   org.springframework.web.context.ContextLoaderListener
  </listener-class>
</listener>
 

<!-- 指定Spring Bean的配置文件所在目錄。默認(rèn)配置在WEB-INF目錄下 -->
<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 >

  <!-- 啟用spring mvc 注解 -->
  <context:annotation-config />

  <!-- 設(shè)置使用注解的類所在的jar包 -->
  <context:component-scan base-package="controller"></context:component-scan>

  <!-- 完成請(qǐng)求和注解POJO的映射 -->
  <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
　　
  <!-- 對(duì)轉(zhuǎn)向頁(yè)面的路徑解析。prefix：前綴， suffix：后綴 -->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/jsp/" p:suffix=".jsp" />
</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 //類似Struts的Action
public class TestController {

  @RequestMapping("test/login.do") // 請(qǐng)求url地址映射，類似Struts的action-mapping
  public String testLogin(@RequestParam(value="username")String username, String password, HttpServletRequest request) {
    // @RequestParam是指請(qǐng)求url地址映射中必須含有的參數(shù)(除非屬性required=false)
    // @RequestParam可簡(jiǎn)寫為：@RequestParam("username")

    if (!"admin".equals(username) || !"admin".equals(password)) {
      return "loginError"; // 跳轉(zhuǎn)頁(yè)面路徑（默認(rèn)為轉(zhuǎn)發(fā)），該路徑不需要包含spring-servlet配置文件中配置的前綴和后綴
    }
    return "loginSuccess";
  }

  @RequestMapping("/test/login2.do")
  public ModelAndView testLogin2(String username, String password, int age){
    // request和response不必非要出現(xiàn)在方法中，如果用不上的話可以去掉
    // 參數(shù)的名稱是與頁(yè)面控件的name相匹配，參數(shù)類型會(huì)自動(dòng)被轉(zhuǎn)換
    
    if (!"admin".equals(username) || !"admin".equals(password) || age < 5) {
      return new ModelAndView("loginError"); // 手動(dòng)實(shí)例化ModelAndView完成跳轉(zhuǎn)頁(yè)面（轉(zhuǎn)發(fā)），效果等同于上面的方法返回字符串
    }
    return new ModelAndView(new RedirectView("../index.jsp")); // 采用重定向方式跳轉(zhuǎn)頁(yè)面
    // 重定向還有一種簡(jiǎn)單寫法
    // return new ModelAndView("redirect:../index.jsp");
  }

  @RequestMapping("/test/login3.do")
  public ModelAndView testLogin3(User user) {
    // 同樣支持參數(shù)為表單對(duì)象，類似于Struts的ActionForm，User不需要任何配置，直接寫即可
    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") // 獲取applicationContext.xml中bean的id為loginService的，并注入
  private LoginService loginService; //等價(jià)于spring傳統(tǒng)注入方式寫get和set方法，這樣的好處是簡(jiǎn)潔工整，省去了不必要得代碼

  @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") // 指定唯一一個(gè)*.do請(qǐng)求關(guān)聯(lián)到該Controller
public class TestController2 {
  
  @RequestMapping
  public String testLogin(String username, String password, int age) {
    // 如果不加任何參數(shù)，則在請(qǐng)求/test2/login.do時(shí)，便默認(rèn)執(zhí)行該方法
    
    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) {
    // 依據(jù)params的參數(shù)method的值來區(qū)分不同的調(diào)用方法
    // 可以指定頁(yè)面請(qǐng)求方式的類型，默認(rèn)為get請(qǐng)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請(qǐng)求url
public class TestController3 {

  @RequestMapping("login.do") // 子request請(qǐng)求url，拼接后等價(jià)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";
  }
}

@RequestMapping(value="/comment/{blogId}", method=RequestMethod.POST)
public void comment(Comment comment,@PathVariable int blogId, HttpSession session, HttpServletResponse response) throws IOException {
  
}