Java 进阶必备之ssm框架全面整合

SSM框架是spring MVC ，spring和mybatis框架的整合，是标准的MVC模式，将整个系统划分为表现层，controller层，service层，DAO层四层，使用spring MVC负责请求的转发和视图管理，spring实现业务对象管理，mybatis作为数据对象的持久化引擎

1.导入依赖

  junitjunit4.12 mysqlmysql-connector-java5.1.47 com.mchangec3p00.9.5.2 javax.servletservlet-api2.5 javax.servlet.jspjsp-api2.2 javax.servletjstl1.2 org.mybatismybatis3.5.2 org.mybatismybatis-spring2.0.2 org.springframeworkspring-webmvc5.1.9.RELEASE org.springframeworkspring-jdbc5.1.9.RELEASE org.springframeworkspring-context5.1.9.RELEASE com.fasterxml.jackson.corejackson-databind2.12.1 com.alibabadruid-spring-boot-starter1.1.10   src/main/java **/*.properties**/*.xmlfalse src/main/resources **/*.properties**/*.xmlfalse

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

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

    springmvcorg.springframework.web.servlet.DispatcherServlet contextConfigLocationclasspath:applicationContext.xml1 springmvc/ encodingFilter org.springframework.web.filter.CharacterEncodingFilter  encodingutf-8 encodingFilter/* 15