SpringMVC--RESTful入门

主要内容：

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RESTful概述：

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 RESTful核心内容：

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RESTful架构特点：

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RESTful风格概述：

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案例：课程添加删除

web.xml配置过滤器：

  
    hiddenHttpMethodFilter
    org.springframework.web.filter.HiddenHttpMethodFilter
  

  
    hiddenHttpMethodFilter
    /*
  

业务代码：

Entity:

Course:

package com.imooc.entity;
public class Course {
    private int id;
    private String name;
    private double price;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}

Dao:

CourseDao:

package com.imooc.dao;

import com.imooc.entity.Course;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

@Repository
public class CourseDAO {
    private Map courses = new HashMap();

    /**
     * 新增课程
     */
    public void add(Course course){
        courses.put(course.getId(),course);
    }

    /**
     * 查询全部课程
     */
    public Collection getAll(){
        return courses.values();
    }

    /**
     * 通过id查询课程
     */
    public Course getById(int id){
        return courses.get(id);
    }

    /**
     * 修改课程
     */
    public void update(Course course){
        courses.put(course.getId(),course);
    }

    /**
     * 删除课程
     */
    public void deleteById(int id){
        courses.remove(id);
    }
}

Controller:

CourseController:

package com.imooc.controller;

import com.imooc.dao.CourseDAO;
import com.imooc.entity.Course;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;

/**
 * Created by Administrator.
 */
@Controller
public class CourseController {
    @Autowired
    private CourseDAO courseDAO;

    /**
     * 添加课程
     */
    @PostMapping(value = "/add")
    public String add(Course course){
        courseDAO.add(course);
        return "redirect:/getAll";
    }

    /**
     * 查询全部课程
     * @return
     */
    @GetMapping(value = "/getAll")
    public ModelAndView getAll(){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("index");
        modelAndView.addObject("courses",courseDAO.getAll());
        return modelAndView;
    }

    /**
     * 通过id查询课程
     */
    @GetMapping(value = "/getById/{id}")
    public ModelAndView getById(@PathVariable(value = "id") int id){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("edit");
        modelAndView.addObject("course",courseDAO.getById(id));
        return modelAndView;
    }

    /**修改课程
     *
     */
    @PutMapping(value = "/update")
    public String update(Course course){
        courseDAO.update(course);
        return "redirect:/getAll";
    }

    /**
     * 删除课程
     */
    @DeleteMapping(value = "/delete/{id}")
    public String delete(@PathVariable(value = "id")  int id){
        courseDAO.deleteById(id);
        return "redirect:/getAll";
    }

}

配置文件：

springmvc.xml:

web.xml:

  Archetype Created Web Application

  
  
    encodingFilter
    org.springframework.web.filter.CharacterEncodingFilter
    
      encoding
      UTF-8
    
    
      forceEncoding
      true
    
  
  
    encodingFilter
    /*
  

  
    springmvc
    org.springframework.web.servlet.DispatcherServlet
    
      contextConfigLocation
      classpath:springmvc.xml
    
  
  
    springmvc
    /
  

  
    default
    *.css
  

  
    hiddenHttpMethodFilter
    org.springframework.web.filter.HiddenHttpMethodFilter
  

  
    hiddenHttpMethodFilter
    /*
  

JSP页面：

<%--
  Created by IntelliJ IDEA.
  User: Administrator.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page isELIgnored="false" %>


    
    
    




    
    

        

            
imooc-添加课程
        
    

    

        

            课程编号
            

                
            
        
        

            课程名称
            

                
            
        
        

            课程价格
            

                
            
        
        

            

                提交
            
        
    

edit.jsp:

<%--
  Created by IntelliJ IDEA.
  User: Administrator.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page isELIgnored="false" %>


    
    
    




    
    

        

            
imooc-修改课程
        
    

    

        

            课程编号
            

                
            
        
        

            课程名称
            

                
            
        
        

            课程价格
            

                
            
        
        

            

                
                提交
            
        
    

index.jsp:

<%--
  Created by IntelliJ IDEA.
  User: Administrator.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page isELIgnored="false" %>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>


    
    




    
    

        

            
imooc-课程管理
        
    
    
    

        

            
                    

                

                

                    

                        
                    
                    
编号
                    
课程名
                    
价格
                    
编辑
                    
删除
                
                
                

                

                        

                        
${course.id}
                        
${course.name}
                        
${course.price}
                        

                            

                                
                                    编辑
                                
                            
                        
                        

                            

                                
                                    
                                    删除