SpringMVC01（入门）

目录

一，SpringMVC的简介

二，SpringMVC的Helloword实现

三，SpringMVC的配置

四，SpringMVC的增删改查

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一，SpringMVC的简介

 Spring Web MVC是一种基于Java的实现了MVC设计模式的、请求驱动类型的、轻量级Web框架。

二，SpringMVC的Helloword实现

pom.xml

 <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-webmvcartifactId>
        <version>${spring.version}version>
      dependency>

<dependency>
          <groupId>jstlgroupId>
          <artifactId>jstlartifactId>
          <version>1.2version>
      dependency>
      <dependency>
          <groupId>taglibsgroupId>
          <artifactId>standardartifactId>
          <version>1.1.2version>
      dependency>

 

三，SpringMVC的配置

2. SpringMVC处理请求的流程

  2.1 首先用户发送请求-->DispatherServlet

  2.2 DispatcherServlet-->HandlerMapping

  2.3 DispatcherServlet-->HandlerAdapter

  2.4 HandlerAdapter-->处理器功能处理方法的调用

  2.5 ModelAndView的逻辑视图名-->ViewRecolver

  2.6 View-->渲染

  2.7 返回控制权给DispatcherServlet，由DispatcherServlet返回呼应给用户，流程结束

3. SpringMVC核心开发步骤

  3.1 DispatcherServlet在web.xml中的部署描述，从而拦截请求到springMVC

  3.2 HandlerMapping的配置，从而将请求映射到处理器

  3.3 HandlerAdapter的配置，从而支持多种类型的处理器

  3.4 处理器(页面控制器)的配置，从而刊行功能处理

  3.5 ViewResolver的配置，从而将逻辑视图名解析为具体的视图技术

4. SpringMVC的组件

  4.1 前端控制器(DispatcherServlet)

  4.2 请求到处理器映射(HandlerMapping)

  4.3 处理器适配器(HandlerAdapter)

  4.4 视图解析器(ViewResolver)

  4.5 处理器或页面控制器(Controller)

  4.6 验证器(Validator)

  4.6 命令对象(Command 请求参数绑定到的对象就叫命令对象)

  4.7 表单对象(Form Object提供给表单展示和提交到的对象就叫表单对象)

springmvc-servlet.xml

"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" xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    
    
    <aop:aspectj-autoproxy/>
    <context:component-scan base-package="com.javaxl.ssm"/>
 
    
    
    
    <mvc:annotation-driven>mvc:annotation-driven>
 
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        
        <property name="viewClass"
                  value="org.springframework.web.servlet.view.JstlView">property>
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
    bean>
 
    
    
    <mvc:resources location="/images/" mapping="/images/**"/>
    
 
 
beans>

 web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
  <display-name>Archetype Created Web Applicationdisplay-name>
  <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>classpath:applicationContext.xmlparam-value>
  context-param>
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>
 
  
  <servlet>
    <servlet-name>SpringMVCservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    
    <init-param>
      <param-name>contextConfigLocationparam-name>
      <param-value>/WEB-INF/spring-mvc.xmlparam-value>
    init-param>
    <load-on-startup>1load-on-startup>
    
    <async-supported>trueasync-supported>
  servlet>
  <servlet-mapping>
    <servlet-name>SpringMVCservlet-name>
    <url-pattern>/url-pattern>
  servlet-mapping>
web-app>

四，SpringMVC的增删改查

package com.javaxl.ssm.controller;
 
import com.javaxl.ssm.model.Book;
import com.javaxl.ssm.model.PageBean;
import com.javaxl.ssm.service.BookService;
import com.javaxl.ssm.util.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
 
import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
/**
 * @author 
 * @site www.javaxl.com
 * @company
 * @create  2019-09-27 21:51
 */
@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    private BookService bookService;
 
    @RequestMapping("/preSave")
    public String preSave(Book book,HttpServletRequest request){
        if(book.getBid() != null){
            Book b = this.bookService.selectByPrimaryKey(book.getBid());
            request.setAttribute("book2",b);
        }
 
        return "bookEdit";
    }
 
    @RequestMapping("/add")
    public String add(Book book){
        this.bookService.insert(book);
        return "redirect:/book/list";
    }
 
    @RequestMapping("/del/{bid}")
    public String del(@PathVariable(value = "bid") Integer bid){
        this.bookService.deleteByPrimaryKey(bid);
        return "redirect:/book/list";
    }
 
    @RequestMapping("/list")
    public String list(HttpServletRequest request,Book book){
        PageBean pageBean = new PageBean();
        pageBean.setRequest(request);
        Map map = new HashMap();
        map.put("bname","%圣墟%");
        List
        request.setAttribute("bookList",list);
        request.setAttribute("pageBean",pageBean);
        return "bookList";
    }
 
    @RequestMapping("/edit")
    public String edit(Book book){
        this.bookService.updateByPrimaryKeySelective(book);
        return "redirect:/book/list";
    }
}