java：Springmvc框架1（基本配置，注解配置，转换器引入）

1.springmvc01:（基本配置）

　　

　　

　　web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc01</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  
  <!-- spring mvc的前端控制器,类似struts2的核心过滤器 -->
  <servlet>
      <servlet-name>springmvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      
      
      <!-- 通过contextConfigLocation参数指定配置文件的位置，默认在WEB-INF/查找名称为 [servlet-name]-servlet.xml -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:springmvc.xml</param-value>
      </init-param>
      
      
      <!-- servlet随web容器而启动 -->
      <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>*.action</url-pattern>
  </servlet-mapping>
</web-app>

　　springmvc.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd">
   
   
    <!-- 处理器映射器 -->
    <!-- 根据bean的name进行查找Handler处理器 将请求的url配置在bean的name中 -->
    <!-- 这是一个默认的映射处理器,即使不配置，那么也是默认就是这个 -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
    
    
    <!-- HandlerAdapter适配器 -->
    <!--  注意：这个适配器不是必须配置的，这是默认的、他在servlet容器已启动就被加载-->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
    
    
    <!-- 配置自定义Handler控制器 -->
    <!-- Handler后端控制器 -->
    <!-- 配置controller ,使用beanName:name="/hello.action"进行进行请求映射匹配-->
    <bean name="/hello.action" class="cn.zzsxt.controller.HelloController"></bean>
    
    
    
    <!-- 配置视图解析器 -->
    <!-- InternalResourceViewResolver：支持JSP视图解析 -->
    <!-- viewClass：JstlView表示JSP模板页面需要使用JSTL标签库，所以classpath中必须包含jstl的相关jar包； -->
    <!-- prefix 和suffix：查找视图页面的前缀和后缀，最终视图的址为： -->
    <!-- 前缀+逻辑视图名+后缀，逻辑视图名需要在controller中返回ModelAndView指定，比如逻辑视图名为hello，-->
    <!-- 则最终返回的jsp视图地址 "WEB-INF/view/hello.jsp" -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

　　HelloController.java:

package cn.zzsxt.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
/**
 * 后端控制器,类似与struts2的业务逻辑action
 * @author Think
 *
 */
public class HelloController implements Controller {
    /**
     * 处理用户请求的方法，类似struts2中action的execute方法
     */
    @Override
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
        //处理用户请求
        ModelAndView mv = new ModelAndView();
        mv.addObject("hello", "hello,spring mvc !");//request.setAttribute("hello","hello,spring mvc!");
//        mv.setViewName("/WEB-INF/jsp/hello.jsp");
        mv.setViewName("hello");//视图的逻辑名称
        return mv;
    }

}

　　index.jsp:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
      <a href="hello.action">hello springmvc!</a>
  </body>
</html>

　　

2.springmvc2:（注解配置）

　　springmvc.xml:

<?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context.xsd">
 
 
     <!-- 注解扫描!!!-->
      <context:component-scan base-package="cn.zzsxt.controller"></context:component-scan>
  
  
  
  
       <!-- 注解映射器
        说明 ：对类中标记@ResquestMapping的方法进行映射，根据ResquestMapping定义的url匹配
        ResquestMapping标记的方法，匹配成功返回HandlerMethod对象给前端控制器，HandlerMethod对象中封装url对应的方法Method
    -->
    <!--
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
    -->
    <!-- 注解适配器
         说明：注解式处理器适配器，对标记@ResquestMapping的方法进行适配。
    -->
    <!--
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>
    -->
    <!-- springmvc使用<mvc:annotation-driven> -->
    <!-- 自动加载RequestMappingHandlerMapping和RequestMappingHandlerAdapter， -->
    <!-- 可用在springmvc.xml配置文件中使用<mvc:annotation-driven>替代注解处理器和适配器的配置。 -->
    <mvc:annotation-driven></mvc:annotation-driven>
    
    
    
    
    <!-- 配置视图解析器 -->
    <!-- InternalResourceViewResolver：支持JSP视图解析 -->
    <!-- viewClass：JstlView表示JSP模板页面需要使用JSTL标签库，所以classpath中必须包含jstl的相关jar包； -->
    <!-- prefix 和suffix：查找视图页面的前缀和后缀，最终视图的址为： -->
    <!-- 前缀+逻辑视图名+后缀，逻辑视图名需要在controller中返回ModelAndView指定，比如逻辑视图名为hello，-->
    <!-- 则最终返回的jsp视图地址 "WEB-INF/view/hello.jsp" -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

　　web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc01</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  
  
  <!-- spring mvc的前端控制器,类似struts2的核心过滤器 -->
  <servlet>
      <servlet-name>springmvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      
      
      <!-- 通过contextConfigLocation参数指定配置文件的位置，默认在WEB-INF/查找名称为 [servlet-name]-servlet.xml -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:springmvc.xml</param-value>
      </init-param>
      
      
      <!-- servlet随web容器而启动 -->
      <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>*.action</url-pattern>
  </servlet-mapping>
</web-app>

　　HelloController.java:

package cn.zzsxt.controller;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
 * @Controller:控制器
 * @RequestMapping:访问该处理器的映射路径。
 * 如果在类的上边添加该注解，类似struts2的包的命名空间(窄化路径)
 * 如果在业务方法的上方添加该注解，代表方法该方法对应的url
 * 
 * /hello/aa.action--->aa()
 * /hello/bb.action--->bb()
 * 
 *
 */
@Controller
@RequestMapping("/hello")
public class HelloController {
    //返回值为ModelAndView
    @RequestMapping(value="/aa",method=RequestMethod.GET)
    public ModelAndView aa(){
        ModelAndView mv = new ModelAndView();
        mv.addObject("hello","springmvc注解开发示例!");
        mv.setViewName("hello");
        return mv;
    }
    
    //返回值为void
    @RequestMapping("/bb")
    public void bb(HttpServletRequest request,HttpServletResponse response){
        request.setAttribute("hello", "返回值为void的controller方法!");
        try {
            request.getRequestDispatcher("/WEB-INF/jsp/hello.jsp").forward(request, response);
        } catch (ServletException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    //返回值为String(逻辑视图名称),默认使用的请求转发
    @RequestMapping("/cc")
    public String cc(HttpServletRequest request){
        request.setAttribute("hello", "返回值为String的controller方法!");
        return "hello";//  /WEB-INF/jsp/hello.jsp
    }
    
    //重定向redirect:
    @RequestMapping("/dd")
    public String dd(HttpServletRequest request){
        request.setAttribute("hello", "返回值为String的controller方法!");
//        return "forward:hello";//如果请求转发到controller中的方法(类似与struts2的chain),需要在前面添加forward
        return "redirect:/WEB-INF/jsp/hello.jsp";//  /WEB-INF/jsp/hello.jsp
        
    }
}

3.springmvc03：（转换器引入，日期转换）

　　

　　web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc01</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
 
 
  <!-- spring mvc的前端控制器,类似struts2的核心过滤器 -->
  <servlet>
      <servlet-name>springmvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      
      
      <!-- 通过contextConfigLocation参数指定配置文件的位置，默认在WEB-INF/查找名称为 [servlet-name]-servlet.xml -->
      <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:springmvc.xml</param-value>
      </init-param>
      
      
      <!-- servlet随web容器而启动 -->
      <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
      <servlet-name>springmvc</servlet-name>
      <url-pattern>*.action</url-pattern>
  </servlet-mapping>
  
  
   <!-- 解决post提交乱码问题 -->
  <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>
  </filter>
  <filter-mapping>
      <filter-name>encodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

　　springmvc.xml：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context.xsd">
 
 
     <!-- 注解扫描!!!-->
      <context:component-scan base-package="cn.zzsxt.controller"></context:component-scan>
  
  
          <!-- 配置视图解析器 -->
    <!-- InternalResourceViewResolver：支持JSP视图解析 -->
    <!-- viewClass：JstlView表示JSP模板页面需要使用JSTL标签库，所以classpath中必须包含jstl的相关jar包； -->
    <!-- prefix 和suffix：查找视图页面的前缀和后缀，最终视图的址为： -->
    <!-- 前缀+逻辑视图名+后缀，逻辑视图名需要在controller中返回ModelAndView指定，比如逻辑视图名为hello，-->
    <!-- 则最终返回的jsp视图地址 "WEB-INF/view/hello.jsp" -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    
      
       <!-- 注解映射器
        说明 ：对类中标记@ResquestMapping的方法进行映射，根据ResquestMapping定义的url匹配
        ResquestMapping标记的方法，匹配成功返回HandlerMethod对象给前端控制器，HandlerMethod对象中封装url对应的方法Method
    -->
    <!--
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
    -->
    <!-- 注解适配器
         说明：注解式处理器适配器，对标记@ResquestMapping的方法进行适配。
    -->
    <!--
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>
    -->
    <!-- springmvc使用<mvc:annotation-driven> -->
    <!-- 自动加载RequestMappingHandlerMapping和RequestMappingHandlerAdapter， -->
    <!-- 可用在springmvc.xml配置文件中使用<mvc:annotation-driven>替代注解处理器和适配器的配置。 -->
    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
    
    
    
    <!-- 自定义类型转换器 -->
    <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
        <property name="converters">
            <list>
                <bean class="cn.zzsxt.converter.CustomDateConverter"></bean>
            </list>
        </property>
    </bean>
</beans>

　　UserController.java：

package cn.zzsxt.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import cn.zzsxt.entity.Userinfo;
/**
 * 约定大于配置
 * @author Think
 *
 */
@Controller
@RequestMapping("/user")
public class UserController {
    
    //根据用户请求访问/WEB-INF/jsp/register.jsp
    @RequestMapping(value="/register",method=RequestMethod.GET)
    public String register(){
        return "register";
    }
    
    @RequestMapping(value="/register2",method=RequestMethod.GET)
    public String register2(){
        return "register2";
    }
    //@RequestParam(name="uname")：参数绑定的注解,通过该注解可以解决参数名称与controller中形参名称不一致的问题。
//    @RequestMapping(value="/register",method=RequestMethod.POST)
//    public String register(@RequestParam(name="userName",required=true) String uname,@RequestParam(name="userPass") String upass,Model model){
//        System.out.println("执行了用户注册，用户名:"+uname+",密码:"+upass);
//        model.addAttribute("userName", uname);//request.setAttribute("userName",uname);
//        return "success";
//    }
    @RequestMapping(value="/register",method=RequestMethod.POST)
    public String register(String userName,String userPass,Model model){
        System.out.println("执行了用户注册，用户名:"+userName+",密码:"+userPass);
        model.addAttribute("userName", userName);//request.setAttribute("userName",userName);
        return "success";
    }
    
    @RequestMapping(value="/register2",method=RequestMethod.POST)
    public String register2(Userinfo user,Model model){
        System.out.println("执行了用户注册2，用户名:"+user.getUserName()+",密码:"+user.getUserPass()+",生日:"+user.getBirthDay());
        model.addAttribute("user", user);//request.setAttribute("userName",userName);
        return "success2";
    }
}

　　CustomDateConverter.java：

package cn.zzsxt.converter;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.springframework.core.convert.converter.Converter;
/**
 * 自定义类型转换器
 * @author Think
 *
 */
public class CustomDateConverter implements Converter<String, Date> {

    @Override
    public Date convert(String source) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        try {
            Date date = sdf.parse(source);
            return date;
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

}