java框架018——SSM

电玩女神 2023-10-06 20:20 11阅读 0赞

## 一、外部依赖 ##

使用的数据库  
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创建动态web工程，导入需要的jar包  
![在这里插入图片描述][1e0e9ab986104ac586d40faab749effb.png]

## 二、文件配置 ##

### 2.1、在web.xml文件中进行spring核心容器的配置 ###

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### 2.2、创建spring核心容器的配置文件 ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_17_color_FFFFFF_t_70_g_se_x_16]  
先选择bean,context,tx后面需要再添加

### 2.3、在web.xml文件中进行springMVC的配置 ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 1]

### 2.4、在web.xml文件中配置spring字符编码过滤器 ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 2]

### 2.5、在web.xml文件中配置restful风格过滤器 ###

![在这里插入图片描述][5e658310220c419ab76fe1d6ae8018fc.png]

### 2.6、创建springMVC的配置文件 ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_16_color_FFFFFF_t_70_g_se_x_16]

### 2.7、配置springMVC的配置文件springmvc.xml ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 3]

### 2.8、配置spring的配置文件applicationContext.xml ###

![在这里插入图片描述][08609e0d410b4e5e9d297f2839d4718b.png]

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 4]

### 2.9、创建mybatis-config.xml配置文件 ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 5]  
大部分配置在applicationContext.xml中完成  
![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 6]

## 三、工程搭建 ##

### 3.1、工程结构 ###

![在这里插入图片描述][e92c045de1654953b2ab707575b9ac98.png]  
![在这里插入图片描述][71fe1a036a7e4e6b923a4da35436bed7.png]

### 3.2、bean ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_14_color_FFFFFF_t_70_g_se_x_16]

### 3.3、index.jsp ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 7]

### 3.4、GoodsController.java ###

package com.dgut.ssm.controller;
    
    import java.util.List;
    
    import javax.servlet.http.HttpServletRequest;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.ModelAttribute;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.PutMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    
    import com.dgut.ssm.bean.Goods;
    import com.dgut.ssm.service.GoodsService;
    
    @Controller
    @RequestMapping("/goods")
    public class GoodsController {
        
    	@Autowired
    	private GoodsService service;
    	
    	@GetMapping(path="/list")
    	public String list(Model model) {
        
    		List<Goods> goods=service.getAllGoods();
    		model.addAttribute("goods",goods);
    		return "goodsList";
    	}
    	
    	@GetMapping(path="/edit/{id}")
    	public String edit(@PathVariable("id") Integer id,Model model) {
        
    		Goods goods=service.getGoodsById(id);
    		//放进模型中
    		model.addAttribute("goods",goods);
    		return "goodsEdit";
    	}
    	
    	//所有方法执行前都会先执行该方法
    	//required = false设置请求路径中非必要，否则不带goodsId的请求会报错
    	@ModelAttribute
    	public void prepareModel(@RequestParam(value = "goodsId", required = false) Integer id,HttpServletRequest request,Model model) {
        
    		//获取goodsEdit.jsp页面传递过来的goodsId
    		String servletPath =request.getServletPath();
    		if(servletPath.equals("/goods/update")) {
        
    			Goods goods=service.getGoodsById(id);
    			model.addAttribute("modelGoods",goods);
    		}
    	}
    	//@ModelAttribute("modelGoods")对应上面的model.addAttribute("modelGoods",goods);
    	@PutMapping(path="/update")
    	public String update(@ModelAttribute("modelGoods") Goods goods) {
        
    		System.out.println("update goods=="+goods);
    		service.updateGoods(goods);
    		return "redirect:/goods/list";
    	}
    }

### 3.5、GoodsService.java ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_20_color_FFFFFF_t_70_g_se_x_16 8]

### 3.6、GoodsDao.java ###

![在这里插入图片描述][watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5rGf5bee55uK5b2k_size_13_color_FFFFFF_t_70_g_se_x_16]

### 3.7、GoodsMapper.xml ###

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE mapper
     PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
     "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    <mapper namespace="com.dgut.ssm.dao.GoodsDao">
    
    	 
    	 <select id="getGoodsByid" resultType="com.dgut.ssm.bean.Goods">
    	 	select goods_id goodsId,name,price,quantity 
    	 	from tbl_goods 
    	 	where goods_id=#{id} 
    	 </select>
    	 
    	 
    	 <update id="update" >
    	 	update tbl_goods
    	 	set name=#{name},price=#{price},quantity=#{quantity}
    	 	where goods_id=#{goodsId} 
    	 </update>
    	 
    	  
    	  <select id="getAllGoods" resultType="com.dgut.ssm.bean.Goods">
    	 	select goods_id goodsId,name,price,quantity 
    	 	from tbl_goods
    	 </select>
    </mapper>

### 3.8、goodsList.jsp ###

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    	<h3>Goods List Page</h3>
    	<table border="1" cellspacing="0" cellpadding="3">
    		<tr>
    			<th>ID</th>
    			<th>Name</th>
    			<th>Price</th>
    			<th>Quantity</th>
    			<th>Update</th>
    			<th>Delete</th>
    		</tr>
    		
    		<c:forEach items="${requestScope.goods }" var="g">
    		<tr>
    			<td>${g.goodsId }</td>
    			<td>${g.name }</td>
    			<td>${g.price }</td>
    			<td>${g.quantity }</td>
    			<td><a href="${pageContext.request.contextPath}/goods/edit/${g.goodsId }">Update</a></td>
    			<td><a href="${pageContext.request.contextPath}/goods/delete">Delete</a></td>
    		</tr>
    		</c:forEach>
    	</table>
    </body>
    </html>

### 3.9、goodsEdit.jsp ###

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
    
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    	<h3>Goods edit page</h3>
    	<form:form modelAttribute="goods" action="${pageContext.request.contextPath}/goods/update" method="post">
    		<form:hidden path="goodsId"/>
    		
    		<input type="hidden" name="_method" value="put">
    		
    		Name:${requestScope.goods.name }<br>
    		Price:<form:input path="price"/><br>
    		Quantity:<form:input path="quantity"/><br>
    		<input type="submit" value="Submit">
    	</form:form>
    </body>
    </html>

## 四、运行结果 ##

![在这里插入图片描述][47cdc2ff158543f8836e0541df35e0ba.png]  
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![在这里插入图片描述][a1082071f4114084acf9080e8cfacfc1.png]

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