Java如何整合模板彻底解决ssm配置问题

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Spring+SpringMVC+Mybatis

环境配置
IDEA
MySQL 5.7
Tomcat 8.5
Maven 3.6
创建数据库

CREATE DATABASE `ssmbuild`;USE `ssmbuild`;DROP TABLE IF EXISTS `books`;CREATE TABLE `books` (`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',`bookName` VARCHAR(100) NOT NULL COMMENT '书名',`bookCounts` INT(11) NOT NULL COMMENT '数量',`detail` VARCHAR(200) NOT NULL COMMENT '描述',KEY `bookID` (`bookID`)) ENGINE=INNODB DEFAULT CHARSET=utf8INSERT  INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES(1,'Java',1,'从入门到放弃'),(2,'MySQL',10,'从删库到跑路'),(3,'Linux',5,'从进门到进牢');

编写数据库对应的实体类com.longdi.pojo.Books
导入lombok在pom.xml中

package com.longdi.pojo;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;/** * @author: 龍弟 * @description * @date: 2021/9/27 20:22 */@Data@AllArgsConstructor@NoArgsConstructorpublic class Books {    private int bookID;    private String bookName;    private int bookCounts;    private String detail;}

导入相关的pom依赖

                            junit            junit            4.12                                    mysql            mysql-connector-java            5.1.47                                    com.mchange            c3p0            0.9.5.2                                    javax.servlet            servlet-api            2.5                            javax.servlet.jsp            jsp-api            2.2                            javax.servlet            jstl            1.2                                    org.mybatis            mybatis            3.5.2                            org.mybatis            mybatis-spring            2.0.2                            org.aspectj            aspectjweaver            1.8.4                                    org.springframework            spring-webmvc            5.1.9.RELEASE                            org.springframework            spring-jdbc            5.1.9.RELEASE                            org.projectlombok            lombok            1.18.16            compile            

资源过滤设置

                     src/main/java                          **/*.properties               **/*.xml                      false                         src/main/resources                          **/*.properties               **/*.xml                      false          

Mybatis层编写
创建mybatis-config.xml

jdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8jdbc.username=rootjdbc.password=123456

编写Dao层的Mapper接口

package com.longdi.dao;import com.longdi.pojo.Books;import org.apache.ibatis.annotations.Param;import java.util.List;/** * @author: 龍弟 * @description * @date: 2021/9/27 20:32 */public interface BookMapper {    //增加一本书    int addBook(Books books);    //删除一本书    int deleteBookById(@Param("bookId") int id);    //更新一本书    int updateBook(Books books);    //查询一本书    Books queryBookById(@Param("bookId")int id);    //查询全部的书    List queryAllBook();    Books queryBookByName(@Param("bookName")String bookName);}

编写接口对应的 Mapper.xml 文件。需要导入MyBatis的包；

           insert into ssmbuild.books(bookName,bookCounts,detail)       values(#{bookName},#{bookCounts},#{detail});                delete from ssmbuild.books where bookID=#{bookId}                    update ssmbuild.books        set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}        where bookID=#{bookID};                select * from ssmbuild.books        where bookID=#{bookId}                select * from ssmbuild.books                    select * from ssmbuild.books where bookName=#{bookName}        

编写Service层的接口

package com.longdi.service;import com.longdi.pojo.Books;import java.util.List;/** * @author: 龍弟 * @description * @date: 2021/9/27 21:03 */public interface BookService {    //增加一本书    int addBook(Books books);    //删除一本书    int deleteBookById( int id);    //更新一本书    int updateBook(Books books);    //查询一本书    Books queryBookById(int id);    //查询全部的书    List queryAllBook();    Books queryBookByName(String bookName);}

Service层的实现类

package com.longdi.service;import com.longdi.dao.BookMapper;import com.longdi.pojo.Books;import org.springframework.stereotype.Service;import java.util.List;/** * @author: 龍弟 * @description * @date: 2021/9/27 21:05 */public class BookServiceImpl implements BookService{    private BookMapper bookMapper;    public void setBookMapper(BookMapper bookMapper) {        this.bookMapper = bookMapper;    }    public int addBook(Books books) {        return bookMapper.addBook(books);    }    public int deleteBookById(int id) {        return bookMapper.deleteBookById(id);    }    public int updateBook(Books books) {        System.out.println("BookServiceImpl:updateBook=>"+books);        return bookMapper.updateBook(books);    }    public Books queryBookById(int id) {        return bookMapper.queryBookById(id);    }    public List queryAllBook() {        return bookMapper.queryAllBook();    }    public Books queryBookByName(String bookName) {        return bookMapper.queryBookByName(bookName);    }}

Spring整合Mybatis spring-dao.xml
以下为spring层

spring-service.xml文件

以下为SpringMVC层
配置web.xml

                DispatcherServlet        org.springframework.web.servlet.DispatcherServlet                    contextConfigLocation                        classpath:applicationContext.xml                1                DispatcherServlet        /                    encodingFilter                    org.springframework.web.filter.CharacterEncodingFilter                            encoding            utf-8                        encodingFilter        /*                    15    

spring-mvc.xml

Spring配置整合文件，创建applicationContext.xml

以上为SSM的环境配置，下面编写Controller层和视图层，实现书籍的CRUD功能

controller层 书籍的增删改查功能

import java.util.ArrayList;import java.util.List;/** * @author: 龍弟 * @description * @date: 2021/9/27 22:47 */@Controller@RequestMapping("/book")public class BookController {    @Autowired    @Qualifier("BookServiceImpl")    private BookService bookService;    @RequestMapping("/allBook")    public String list(Model model) {        List list = bookService.queryAllBook();        model.addAttribute("list", list);        return "allBook";    }    //跳转到增加书籍页面    @RequestMapping("/toAddBook")    public String toAddPaper(){        return "addBook";    }    //添加书籍的请求    @RequestMapping("/addBook")    public String addBook(Books books){        System.out.println("addBook=>"+books);        bookService.addBook(books);        return "redirect:/book/allBook";    }    //跳转到修改页面    @RequestMapping("toUpdateBook")    public String toUpdatePaper(int id,Model model){        Books books = bookService.queryBookById(id);        model.addAttribute("book",books);        return "updateBook";    }    //修改书籍    @RequestMapping("updateBook")    public String updateBook(Books books){        System.out.println("updateBook=>"+books);        int i=bookService.updateBook(books);        if(i>0){            System.out.println("添加books成功"+books);        }        return "redirect:/book/allBook";    }    //删除书籍    @RequestMapping("/deleteBook/{bookId}")    public String deleBook(@PathVariable("bookId") int id){        bookService.deleteBookById(id);        return "redirect:/book/allBook";    }    //查询书籍    @RequestMapping("/queryBook")    public String queryBook(String queryBookName,Model model){         Books books=bookService.queryBookByName(queryBookName);        System.err.println("queryBook=>"+books);         List list=new ArrayList();         list.add(books);         if(books==null){             list=bookService.queryAllBook();             model.addAttribute("error","未查到");         }         model.addAttribute("list",list);         return "allBook";    }}

编写首页index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>    
  进入到书籍页面

编写书籍列表页面allBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ page contentType="text/html;charset=UTF-8" language="java" %>        
  
    
      
        
          书籍列表 -- 显示所有书籍        
      
    
  
  
    
      新增书籍      显示全部书籍    
    
      
      <%--查询书籍--%>      
        ${error}                          
    
  
  
    
                
        
        
          
书籍编号
          
书籍名字
          
书籍数量
          
书籍详情
          
操作
        
        
        
        
            
${book.getBookID()}
            
${book.getBookName()}
            
${book.getBookCounts()}
            
${book.getDetail()}
            
              更改 |              删除            
          
                
      
    
  

添加书籍页面 addBook.jsp

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


        书籍数量：


        书籍详情：


            

修改书籍页面 updateBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ page contentType="text/html;charset=UTF-8" language="java" %>                
    
        
            
                
                    修改信息                
            
        
    
    
                书籍名称：        书籍数量：        书籍详情：            

项目部署到tomcat中

项目结构图

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