SpringMVC+Maven搭建一个增删改查小项目（无连接数据库）

时间：2023-01-22 18:00:00 28zjw印制板连接器

1.创建Maven项目

2.配置pom.xml添加依赖的文件jar包

做web项目必须将包装方式改为包装方式war
Maven仓库地址：https://mvnrepository.com/

 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">     <modelVersion>4.0.0modelVersion>          <groupId>com.springmvcgroupId>     <artifactId>SpringMVC_studyartifactId>     <version>1.0-SNAPSHOTversion>       <packaging>warpackaging>           <properties>         <maven.compiler.source>8maven.compiler.source>         <maven.compiler.target>8maven.compiler.target>     properties>       <dependencies>          
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.3.1version>
        dependency>


        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>javax.servlet-apiartifactId>
            <version>3.0.1version>
            <scope>providedscope>  
        dependency>


        
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>jsp-apiartifactId>
            <version>2.1version>
            <scope>providedscope>
        dependency>


        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>


        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>testscope>
        dependency>


        
        <dependency>
            <groupId>ch.qos.logbackgroupId>
            <artifactId>logback-classicartifactId>
            <version>1.2.3version>
            <scope>testscope>
        dependency>

    dependencies>
project>

刷新Maven导入jar包

3.创建web.xml，主要文件路径，在main包下创建webapp包，在项目结构中自动创建web.xml，然后配置该xml

配置SpringMVC dispatcherServlet前端控制器
配置springMVC的编码过滤器filter

改成


<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_4_0.xsd" version="4.0">




        <servlet>
            <servlet-name>DispatcherServletservlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
            <init-param>

                
                <param-name>contextConfigLocationparam-name>
                
                <param-value>classpath:SpringMVC.xmlparam-value>
            init-param>

            <load-on-startup>1load-on-startup>
        servlet>
        <servlet-mapping>
            <servlet-name>DispatcherServletservlet-name>



            <url-pattern>/url-pattern>
        servlet-mapping>

    
    <filter>
        <filter-name>CharacterEncodingFilterfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
        <init-param>
            <param-name>forceResponseEncodingparam-name>
            <param-value>trueparam-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>


web-app>

4.在resource包下创建SpringMVC.xml文件，并创建好开发包，然后配置SpringMVC.xml文件，然后添加local本地Tomcat

配置组件扫描的位置
配置视图解析器（用原生的内部资源视图解析器），前缀视图、后缀视图、以及jstl视图 JstlView
配置mvc:default-servlet-handler用来处理静态css、js、jpg、html等资源
配置注解驱动mvc:annotation-driven


<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:tools="http://www.springframework.org/schema/tool" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool.xsd">

    <context:component-scan base-package="com.springmvc">context:component-scan>


    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        
        <property name="prefix" value="/WEB-INF/templates/">property>

        <property name="suffix" value=".jsp">property>

        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView">property>
    bean>
    
    <mvc:default-servlet-handler />
    <mvc:annotation-driven>












    mvc:annotation-driven>

beans>

添加Tomcat

然后记得更改下名字

特别的是，VM options中添加-Dfile.encoding=UTF-8，以确保控制台不乱码

5.配置好这些就可以做开发了。在WEB_INF下创建templates，然后创建jsp文件。为美化界面，用到bootstrap框架

bootstrap下载及运用，参照官网使用，https://v3.bootcss.com/
添加jquery文件，引入到jsp文件时，要保证jquery的引入在js前面
jstl的使用，需要在页面上声明+在SpringMVC.xml中配置jstl视图
设置pageContext域对象APP_PATH保存项目根路径，用于方便跳转页面

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>


    <% pageContext.setAttribute("APP_PATH",request.getContextPath()); %>
    首页


    欢迎来到首页！


查看书籍

book.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>



    <% pageContext.setAttribute("APP_PATH",request.getContextPath()); %>
    书本
    
    
    

    
    

    
    



    
        
            书籍列表


        
        
            Request请求域获取时间戳：${time}
        
        
            
                
                        
                    
                    
                        #
                        书名
                        作者
                        性别
                        价格
                        操作
                    
                    
                    
                    
                            ${books.id}
                            ${books.name}
                            ${books.author}
                            ${books.sex}
                            ${books.price}
                            
                                
                                    
                                

                                
                                    
                                
                            
                        
                    
                    
                
            

        
        
            
                添加/修改书籍：

                
                    
                    
                        书名
                        
                            
                        
                    
                    
                        作者
                        
                            
                        
                    
                    
                        性别
                        
                            
                                
                                    
                                        男
                                    
                                    
                                        男
                                    
                                
                                
                                    
                                        女
                                    
                                    
                                        女
                                    
                                
                            
                        
                    
                    
                        价格

#	书名	作者	性别	价格	操作
${books.id}	${books.name}	${books.author}	${books.sex}	${books.price}

6.实体类对象book

package com.springmvc.entity;

import org.springframework.stereotype.Component;

@Component
public class Book { 
        

    private Integer id;
    private String name;
    private String author;
    private String sex;
    private Integer price;

    @Override
    public String toString() { 
        
        return "Book{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", author='" + author + '\'' +
                ", sex='" + sex + '\'' +
                ", price=" + price +
                '}';
    }

    public Book() { 
        
    }

    public Book(Integer id, String name, String author, String sex, Integer price) { 
        
        this.id = id;
        this.name = name;
        this.author = author;
        this.sex = sex;
        this.price = price;
    }

    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;
    }

    public String getAuthor() { 
        
        return author;
    }

    public void setAuthor(String author) { 
        
        this.author = author;
    }

    public String getSex() { 
        
        return sex;
    }

    public void setSex(String sex) { 
        
        this.sex = sex;
    }

    public Integer getPrice() { 
        
        return price;
    }

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

7.dao数据层

BookDao接口

package com.springmvc.dao;

import com.springmvc.entity.Book;

import java.util.Collection;

public interface BookDao { 
        
    public Collection<Book> getBooks();
    public void addBook(Book book);
    public void updateBook(Book book);
    public void deleteBook(Integer id);
}

实现类

package com.springmvc.dao;

import com.springmvc.entity.Book;
import org.springframework.stereotype.Repository;

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

@Repository
public class BookDaoImpl implements BookDao{ 
        

    private static Map<Integer,Book> data;
    private static Integer _id;

    static{ 
        
        data=new HashMap<>();
        _id=4;
        data.put(1,new Book(1,"Spring大全","老王","男",100));
        data.put(2,new Book(2,"西游记","老刘","女",80));
        data.put(3,new Book(3,"三生三世","阿臭","男",300));
    }

    @Override
    public Collection<Book> getBooks() { 
        
        return data.values();
    }

    @Override
    public void addBook(Book book) { 
        
        if(book.getId()==null){ 
        
            book.setId(_id++);
            data.put(book.getId(), book);
        }
        data.put(book.getId(), book);
    }

    @Override
    public void updateBook(Book book) { 
        
        data.元器件数据手册、IC替代型号，打造电子元器件IC百科大全！

SpringMVC+Maven搭建一个增删改查小项目（无连接数据库）

欢迎来到首页！

书籍列表

添加/修改书籍：

相关文章