01_SpringMVC

SpringMVC是什么
Spring web mvc和Struts2都属于表现层的框架,它是Spring框架的一部分,我们可以从Spring的整体结构中看得出来：

Spring整体架构

SpringMVC处理流程

SpringMVC处理流程

入门程序

新建web项目，命名为springmvc01
导入jar包
参考：springMVC-day01\参考资料\jar包\springmvc独立运行，所有jar包如下：
spring-jdbc-4.1.3.RELEASE.jar spring-jms-4.1.3.RELEASE.jar spring-messaging-4.1.3.RELEASE.jar spring-tx-4.1.3.RELEASE.jar spring-web-4.1.3.RELEASE.jar spring-webmvc-4.1.3.RELEASE.jar commons-logging-1.1.1.jar jstl-1.2.jar spring-aop-4.1.3.RELEASE.jar spring-aspects-4.1.3.RELEASE.jar spring-beans-4.1.3.RELEASE.jar spring-context-4.1.3.RELEASE.jar spring-context-support-4.1.3.RELEASE.jar spring-core-4.1.3.RELEASE.jar spring-expression-4.1.3.RELEASE.jar
配置前端控制器，在web.xml中添加：


  
    SpringMVC
    org.springframework.web.servlet.DispatcherServlet
    
    
    
    
    1
  
  
    SpringMVC
    *.action

启动tomcat报错
Could not open ServletContext resource [/WEB-INF/SpringMVC-servlet.xml]
SpringMVC就是web.xml中的
添加SpringMVC核心配置文件
在web.xml中添加


        contextConfigLocation
        classpath:SpringMvc.xml

加载自定义的SpringMVC核心文件

在Java Resources下新建一个Source Folder命名为config

新建config
在config新建SpringMvc.xml

Pojo

package cn.huachao.domain;
import java.util.Date;
public class Item {
    private Integer id;
    private String name;
    private Float price;
    private String pic;
    private Date createtime;
    private String detail;
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }
    public Float getPrice() {
        return price;
    }
    public void setPrice(Float price) {
        this.price = price;
    }
    public String getPic() {
        return pic;
    }
    public void setPic(String pic) {
        this.pic = pic == null ? null : pic.trim();
    }
    public Date getCreatetime() {
        return createtime;
    }
    public void setCreatetime(Date createtime) {
        this.createtime = createtime;
    }
    public String getDetail() {
        return detail;
    }
    public void setDetail(String detail) {
        this.detail = detail == null ? null : detail.trim();
    }
}

Controller

package cn.huachao.controller;
import java.util.ArrayList;
import java.util.List;
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;
import cn.huachao.domain.Item;
@Controller
public class ItemController {
    @RequestMapping("/list")
    public ModelAndView  itemsList() throws Exception{
        List itemList = new ArrayList<>();
        //商品列表
        Item item_1 = new Item();
        item_1.setName("联想笔记本_3");
        item_1.setPrice(6000f);
        item_1.setDetail("ThinkPad T430 联想笔记本电脑！");
        
        Item item_2 = new Item();
        item_2.setName("苹果手机");
        item_2.setPrice(5000f);
        item_2.setDetail("iphone6苹果手机！");
        
        itemList.add(item_1);
        itemList.add(item_2);
        
        //模型和视图
        //model模型: 模型对象中存放了返回给页面的数据
        //view视图: 视图对象中指定了返回的页面的位置
        ModelAndView modelAndView = new ModelAndView();
        //将返回给页面的数据放入模型和视图对象中
        modelAndView.addObject("itemList", itemList);
        //指定返回的页面位置
        modelAndView.setViewName("/WEB-INF/jsp/itemList.jsp");
        return modelAndView;
    }
    
}

访问地址测试：http://localhost:8080/springmvc01/list.action

配置JSP视图解析器

在SpringMvc.xml中添加

ItemController中setViewName改变

//modelAndView.setViewName("/WEB-INF/jsp/itemList.jsp");
modelAndView.setViewName("itemList");

访问地址测试：http://localhost:8080/springmvc01/list.action

同时支持json和xml

添加spring-oxm-4.1.3.RELEASE.jar的jar包
SpringMvc.xml



        
        
        
        
        
        
            
            
            
            
            
            
            
            
            
            
            
                
                    
                    
                
            
            
            
                
                    
                    
                        
                            
                                 
                                    
                                       cn.huachao.domain.User

User实例

package cn.huachao.domain;
import java.util.Date;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class User {
   
    private long userID;
    private String userName;
    private Date birth;
 
    public String getUserName() {
       return userName;
    }
    public void setUserName(String userName) {
       this.userName = userName;
    }
    public Date getBirth() {
       return birth;
    }
    public void setBirth(Date birth) {
       this.birth = birth;
    }
    public long getUserID() {
       return userID;
    }
    public void setUserID(long userID) {
       this.userID = userID;
    }
}

Controller

    @RequestMapping(value="/user/{userid}" , method={RequestMethod.GET})
    public String queryUser(@PathVariable("userid")long userID , ModelMap model){
        User u = new User();
        u.setUserID(userID);
        u.setUserName("zhaoyang");
        model.addAttribute("User", u);
        //mv.setViewName("itemList");
        return "User";
    }

/WEB-INF/jsp/User.jsp


    UserName: ${requestScope.User.userID } 

    Age: ${requestScope.User.userName }

测试
http://localhost:8080/springmvc01/user/100.json

json
http://localhost:8080/springmvc01/user/100.xml

xml
http://localhost:8080/springmvc01/user/100

jsp

SpringMVC架构

参考：
SpringMVC原理教程和搭建实例

02-SpringMVC

01_SpringMVC

入门程序

配置JSP视图解析器

同时支持json和xml

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