SSM整合教程

其他 2018-11-16 21:58:12 阅读次数: 0

创建数据库

create database ssm;

创建表

use ssm;
  
CREATE TABLE category_ (
   id int(11) NOT NULL AUTO_INCREMENT,
   name varchar(30) ,
   PRIMARY KEY (id)
) DE
插入数据

use ssm;
   
insert into category_ values(null,"category1");
insert into category_ values(null,"category2");
insert into category_ values(null,"category3");
insert into category_ values(null,"category4");
insert into category_ values(null,"category5");
 
select * from category_
新建 dynamic web project 导入 jar包


pojo

package com.ssm.pojo;
 
public class Category {
     private int id;
     private String name;
     public int getId() {
         return id;
     }
     public void setId( int id) {
         this .id = id;
     }
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this .name = name;
     }
     @Override
     public String toString() {
         return "Category [id=" + id + ", name=" + name + "]" ;
     }
     
}
CategoryMapper

package com.ssm.mapper;
  
import java.util.List;
 
import com.ssm.pojo.Category;
  
public interface CategoryMapper {
  
     public void add(Category category); 
        
     public void delete( int id); 
        
     public Category get( int id); 
      
     public void update(Category category);  
        
     public List<Category> list();
     
     public int count(); 
     
}
   Category.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.ssm.mapper.CategoryMapper" >
         < insert id = "add" parameterType = "Category" >
             insert into category_ ( name ) values (#{name})   
         </ insert >
         
         < delete id = "delete" parameterType = "Category" >
             delete from category_ where id= #{id}  
         </ delete >
         
         < select id = "get" parameterType = "_int" resultType = "Category" >
             select * from   category_  where id= #{id}   
         </ select >
 
         < update id = "update" parameterType = "Category" >
             update category_ set name=#{name} where id=#{id}   
         </ update >
         < select id = "list" resultType = "Category" >
             select * from   category_     
         </ select >    
     </ mapper >

CategoryService

package com.ssm.service;
 
import java.util.List;
 
import com.ssm.pojo.Category;
 
public interface CategoryService {
 
     List<Category> list();
 
}
CategoryServiceImpl

package com.ssm.service.impl;
 
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import com.how2java.mapper.CategoryMapper;
import com.how2java.pojo.Category;
import com.how2java.service.CategoryService;
 
@Service
public class CategoryServiceImpl  implements CategoryService{
     @Autowired
     CategoryMapper categoryMapper;
     
     public List<Category> list(){
         return categoryMapper.list();
     };
 
}
CategoryController

package com.ssm.controller;
 
import java.util.List;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
 
import com.ssm.pojo.Category;
import com.ssm.service.CategoryService;
 
// 告诉spring mvc这是一个控制器类
@Controller
@RequestMapping ( "" )
public class CategoryController {
     @Resource
     CategoryService categoryService;
 
     @RequestMapping ( "listCategory" )
     public ModelAndView listCategory(){
         ModelAndView mav = new ModelAndView();
         List<Category> cs= categoryService.list();
         
         // 放入转发参数
         mav.addObject( "cs" , cs);
         // 放入jsp路径
         mav.setViewName( "listCategory" );
         return mav;
     }
 
}
web.xml

<? xml version = "1.0" encoding = "UTF-8" ?>
< web-app xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
          xmlns = "http://java.sun.com/xml/ns/javaee"
          xmlns:web = "http://java.sun.com/xml/ns/javaee"
          xsi:schemaLocation = "http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version = "2.5" >
     
     <!-- spring的配置文件-->
     < context-param >
         < param-name >contextConfigLocation</ param-name >
         < param-value >classpath:applicationContext.xml</ param-value >
     </ context-param >
     < listener >
         < listener-class >org.springframework.web.context.ContextLoaderListener</ listener-class >
     </ listener >
     
     <!-- spring mvc核心：分发servlet -->
     < servlet >
         < servlet-name >mvc-dispatcher</ servlet-name >
         < servlet-class >org.springframework.web.servlet.DispatcherServlet</ servlet-class >
         <!-- spring mvc的配置文件 -->
         < init-param >
             < param-name >contextConfigLocation</ param-name >
             < param-value >classpath:springMVC.xml</ param-value >
         </ init-param >
         < load-on-startup >1</ load-on-startup >
     </ servlet >
     < servlet-mapping >
         < servlet-name >mvc-dispatcher</ servlet-name >
         < url-pattern >/</ url-pattern >
     </ servlet-mapping >
     
</ web-app >
applicationContext.xml

<?xml version= "1.0" encoding= "UTF-8" ?>
<beans xmlns= "http://www.springframework.org/schema/beans"
     xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" xmlns:aop= "http://www.springframework.org/schema/aop"
     xmlns:tx= "http://www.springframework.org/schema/tx" xmlns:jdbc= "http://www.springframework.org/schema/jdbc"
     xmlns:context= "http://www.springframework.org/schema/context"
     xmlns:mvc= "http://www.springframework.org/schema/mvc"
     xsi:schemaLocation="
      http: //www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
      http: //www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
      http: //www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
      http: //www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
      http: //www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
      http: //www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
     
    <context:annotation-config />
     <context:component-scan base- package = "com.ssm.service" />
 
     <bean id= "dataSource" class = "org.springframework.jdbc.datasource.DriverManagerDataSource" > 
       <property name= "driverClassName" > 
           <value>com.mysql.jdbc.Driver</value> 
       </property> 
       <property name= "url" > 
           <value>jdbc:mysql: //localhost:3306/ssm?characterEncoding=UTF-8</value> 
     
       </property> 
       <property name= "username" > 
           <value>root</value> 
       </property> 
       <property name= "password" > 
           <value>admin</value> 
       </property>    
     </bean>
     
     <bean id= "sqlSession" class = "org.mybatis.spring.SqlSessionFactoryBean" >
         <property name= "typeAliasesPackage" value= "com.ssm.pojo" />
         <property name= "dataSource" ref= "dataSource" />
         <property name= "mapperLocations" value= "classpath:com/ssm/mapper/*.xml" />
     </bean>
 
     <bean class = "org.mybatis.spring.mapper.MapperScannerConfigurer" >
         <property name= "basePackage" value= "com.ssm.mapper" />
     </bean>
     
</beans>
springMVC.xml

<?xml version= "1.0" encoding= "UTF-8" ?>
<beans xmlns= "http://www.springframework.org/schema/beans"
     xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" xmlns:aop= "http://www.springframework.org/schema/aop"
     xmlns:tx= "http://www.springframework.org/schema/tx" xmlns:jdbc= "http://www.springframework.org/schema/jdbc"
     xmlns:context= "http://www.springframework.org/schema/context"
     xmlns:mvc= "http://www.springframework.org/schema/mvc"
     xsi:schemaLocation="http: //www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
         http: //www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
         http: //www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http: //www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
         http: //www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
         http: //www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
 
     <context:annotation-config/>
 
     <context:component-scan base- package = "com.ssm.controller" >
       
     </context:component-scan>
 
     <mvc:annotation-driven />
 
     <!-- 视图定位 -->
     <bean
         class = "org.springframework.web.servlet.view.InternalResourceViewResolver" >
     
         <property name= "prefix" value= "/WEB-INF/jsp/" />
         <property name= "suffix" value= ".jsp" />
     </bean>
</beans>
listCategory.jsp

<%@ page language= "java" contentType= "text/html; charset=UTF-8"
     pageEncoding= "UTF-8" import = "java.util.*" %>
  
<%@ taglib uri= "http://java.sun.com/jsp/jstl/core" prefix= "c" %>
  
<table align= 'center' border= '1' cellspacing= '0' >
     <tr>
         <td>id</td>
         <td>name</td>
     </tr>
     <c:forEach items= "${cs}" var= "c" varStatus= "st" >
         <tr>
             <td>${c.id}</td>
             <td>${c.name}</td>
               
         </tr>
     </c:forEach>
</table>

访问路径：http://127.0.0.1:8080/ssm/listCategory

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