Java 进阶必备之ssm框架全面整合

目录

• 1.导入依赖
• 2.创建实体类
• 3.写dao层接口
• 4.写mybatis核心配置文件和接口配置文件
• 5.用spring整合Mybatis层也就是Dao层
• 6.spring整合Service层
• 7.spring整合Conteoller层
• 8.添加web支持
• 9.完整的目录结构

1.导入依赖

   
        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.springframework
        spring-webmvc
        5.1.9.RELEASE
    
    
    
        org.springframework
        spring-jdbc
        5.1.9.RELEASE
    
 
    
    
        org.springframework
        spring-context
        5.1.9.RELEASE
    
 
    
        com.fasterxml.jackson.core
        jackson-databind
        2.12.1
    
          
    
        com.alibaba
        druid-spring-boot-starter
        1.1.10
    
 

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

2.创建实体类

package pojo;
 
public class books {
    private int bookId;
    private String bookName;
    private int bookCounts;
    private String detail;
 
    public books(int bookId, String bookName, int bookCounts, String detail) {
        this.bookId = bookId;
        this.bookName = bookName;
        this.bookCounts = bookCounts;
        this.detail = detail;
    }
 
    public books() {
    }
 
    public int getBookId() {
        return bookId;
    }
 
    public void setBookId(int bookId) {
        this.bookId = bookId;
    }
 
    public String getBookName() {
        return bookName;
    }
 
    public void setBookName(String bookName) {
        this.bookName = bookName;
    }
 
    public int getBookCounts() {
        return bookCounts;
    }
 
    public void setBookCounts(int bookCounts) {
        this.bookCounts = bookCounts;
    }
 
    public String getDetail() {
        return detail;
    }
 
    public void setDetail(String detail) {
        this.detail = detail;
    }
}

3.写dao层接口

这里暂时只有一个方法

package Dao;
 
import pojo.books;
 
import java.util.List;
 
public interface BooksMapper {
    List selectbooks();
}

4.写mybatis核心配置文件和接口配置文件

这个是接口配置文件

 

    select * from books

 
 

mybatis核心配置文件

5.用spring整合Mybatis层也就是Dao层

这个是spring整合Mybatis的xml文件

数据库配置文件，这里你们改一下数据库就OK

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild
jdbc.username=root
jdbc.password=root

6.spring整合Service层

写接口和实现类

package Service;
 
import org.springframework.stereotype.Service;
import pojo.books;
 
import java.util.List;
 
public interface BooksService {
        List selectbooks();
    }
 

实现类

 @Service
 public class BooksServicelmpl implements BooksService{
   /*这里是把Dao的接口引进来了因为Service层调用Dao层*/
     @Autowired
    private BooksMapper booksMapper;
    public void setBooksMapper(BooksMapper booksMapper) {
        this.booksMapper = booksMapper;
    }
    @Override
    public List selectbooks() {
        return booksMapper.selectbooks();
    }
}

写spring配置文件

关联spring配置文件，我们写个总的配置文件到进去就ok

7.spring整合Conteoller层

写Controller的类

@RestController
public class bookController {
    @Autowired
    private BooksService booksService;
    public void setBooksService(BooksService booksService) {
        this.booksService = booksService;
    }
    @RequestMapping("/books")
    public List selectbooks()
    {
        List list = booksService.selectbooks();
        return list;
    }
}

把三个配置文件关联

8.添加web支持

写web.xml文件里面都是死的

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

创建一个lib包把依赖导进去

添加工件测试

9.完整的目录结构

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