最近学了ssm框架，就简单写了一个mybatis+spring+springmvc的整合增删改查。
先建一个web项目
1.工程结构：
2.所需要的jar包：
3.applicationContext.xml配置文件
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 开始spring的注解形式 -->
<context:annotation-config></context:annotation-config>
<!--告诉spring去哪里扫描 -->
<context:component-scan base-package="com"></context:component-scan>
<mvc:default-servlet-handler />
<!--配置数据源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql:///shop?characterEncoding=utf-8"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>
</bean>
<!-- 加载mybatis文件 -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--指定mapperxml 文件的位置 -->
<property name="mapperLocations" value="classpath:com/ssm/mapper/*.xml"></property>
<!-- 指定数据源 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 配置别名 -->
<property name="typeAliasesPackage" value="com.ssm.model"></property>
</bean>
<!--mybatis自动扫描加载Sql映射文件/接口 : MapperScannerConfigurer sqlSessionFactory -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- basePackage:指定sql映射文件/接口所在的包（自动扫描）dao -->
<property name="basePackage" value="com.ssm.mapper"></property>
</bean>
</beans>
4.springmvc.xml的配置文件
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 注解驱动 -->
<mvc:annotation-driven/>
<!--扫描springmvc的注解 -->
<context:component-scan base-package="com.ssm.controller"/>
<!--开始springmvc的注解形式 -->
<mvc:default-servlet-handler/>
<!-- 配置spring mvc的视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--配置前缀 -->
<property name="prefix" value="/"></property>
<!--配置后缀 -->
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
5.web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>ssmproduct</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<!-- 指定spring applicationContext.xml 配置文件路径-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- spring监听 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 指定spring mvc.xml 配置文件路径-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
6.实体类（Product）（ProductType）
public class Product {
private int pid;
private String proName;
private int saleCount;
private String image;
private double salePrice;
private String decript;
private int sortId;
private ProductType productType;
public int getPid() {
return pid;
}
public void setPid(int pid) {
this.pid = pid;
}
public String getProName() {
return proName;
}
public void setProName(String proName) {
this.proName = proName;
}
public int getSaleCount() {
return saleCount;
}
public void setSaleCount(int saleCount) {
this.saleCount = saleCount;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public double getSalePrice() {
return salePrice;
}
public void setSalePrice(double salePrice) {
this.salePrice = salePrice;
}
public String getDecript() {
return decript;
}
public void setDecript(String decript) {
this.decript = decript;
}
public int getSortId() {
return sortId;
}
public void setSortId(int sortId) {
this.sortId = sortId;
}
public ProductType getProductType() {
return productType;
}
public void setProductType(ProductType productType) {
this.productType = productType;
}
}
public class ProductType {
private int id;
private String typeName;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTypeName() {
return typeName;
}
public void setTypeName(String typeName) {
this.typeName = typeName;
}
}
7.Dao层
public interface ProductDao {
// 查询
public List<Product> listAll(Map map);
// 添加
public void save(Product product);
public Product getById(int pid);
// 修改
public void update(Product product);
// 删除
public void delete(int pid);
}
public interface ProductTypeDao {
// 查询类型
public List<ProductType> listAll();
public ProductType getById(int id);
}
8.mapper.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.ProductDao">
<insert id="save" parameterType="Product">
insert into product(proName,saleCount,image,salePrice,decript,sortId,typeId)
values(#{proName},#{saleCount},#{image},#{salePrice},#{decript},#{sortId},#{productType.id})
</insert>
<resultMap type="Product" id="ProductMap">
<result column="pid" property="pid" />
<result column="proName" property="proName" />
<result column="saleCount" property="saleCount" />
<result column="image" property="image" />
<result column="salePrice" property="salePrice" />
<result column="decript" property="decript" />
<result column="sortId" property="sortId" />
<association property="productType" column="typeId"
select="com.ssm.mapper.ProductTypeDao.getById"></association>
</resultMap>
<select id="listAll" resultMap="ProductMap" parameterType="java.util.Map">
select * from product
<where>
<if test="pname!=null">
and proName like '%${pname}%'
</if>
</where>
</select>
<delete id="delete" parameterType="int">
delete from product where pid=#{pid}
</delete>
<update id="update" parameterType="product">
update product set proName=#{proName},saleCount=#{saleCount},image=#{image},
salePrice=#{salePrice},decript=#{decript},sortId=#{sortId},typeId=#{productType.id}
where pid=#{pid}
</update>
<select id="getById" parameterType="int" resultMap="ProductMap">
select * from product where pid=#{value}
</select>
</mapper>
<?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.ProductTypeDao">
<select id="getById" parameterType="int" resultType="ProductType">
select * from producttype where id=#{id}
</select>
<select id="listAll" resultType="ProductType">
select * from producttype
</select>
</mapper>
9.service层
public interface ProductService {
// 查询
public List<Product> listAll(Map map);
// 添加
public void save(Product product);
public Product getById(int pid);
// 修改
public void update(Product product);
// 删除
public void delete(int pid);
}
public interface ProuctTypeService {
public List<ProductType> listAll();
public ProductType getById(int id);
}
10.Impl层
@Service
public class ProductServiceImpl implements ProductService{
@Autowired
private ProductDao ProductDao;
@Override
public List<Product> listAll(Map map) {
List<Product> list=ProductDao.listAll(map);
return list;
}
@Override
public void save(Product product) {
ProductDao.save(product);
}
@Override
public Product getById(int pid) {
Product product=ProductDao.getById(pid);
return product;
}
@Override
public void update(Product product) {
ProductDao.update(product);
}
@Override
public void delete(int pid) {
ProductDao.delete(pid);
}
}
@Service
public class ProuctTypeServiceImpl implements ProuctTypeService{
@Autowired
private ProductTypeDao ProductTypeDao;
@Override
public List<ProductType> listAll() {
List<ProductType> list=ProductTypeDao.listAll();
return list;
}
@Override
public ProductType getById(int id) {
ProductType productType=ProductTypeDao.getById(id);
return productType;
}
}
11.controller层
@Controller
@RequestMapping("/product")
public class ProductController {
@Autowired
private ProductService ProductService;
@Autowired
private ProuctTypeService prouctTypeService;
/*
* 查询
*/
@RequestMapping("/productlist")
public ModelAndView listproduct(HttpServletRequest request) {
ModelAndView mv=new ModelAndView();
Map map=new HashMap<>();
map=initMap(request, map);
List<Product> list=ProductService.listAll(map);
mv.addObject("list", list);
mv.setViewName("productlist");
return mv;
}
private Map initMap(HttpServletRequest request,Map map) {
String pname=request.getParameter("pname");
map.put("pname", pname);
return map;
}
/*
* 删除
*/
@RequestMapping("/delete")
public String delete(int pid) {
ProductService.delete(pid);
return "redirect:productlist";
}
/*
* 添加
*/
@RequestMapping("/addproduct")
public String addproduct(Product product,int tid) {
ProductType productType=new ProductType();
productType.setId(tid);
product.setProductType(productType);
ProductService.save(product);
return "redirect:productlist";
}
/*
* 添加跳转
*/
@RequestMapping("/toadd")
public String toadd() {
return "addProduct";
}
/*
* 商品类型查询
*/
@RequestMapping("/listType")
public ModelAndView listproType() {
ModelAndView mv=new ModelAndView();
List<ProductType> listType=prouctTypeService.listAll();
mv.addObject("listType", listType);
mv.setViewName("addProduct");
return mv;
}
/*
* 修改 文本框复制
*/
@RequestMapping("/toupdate")
public ModelAndView toupdate(int pid) {
ModelAndView mv=new ModelAndView();
Product product=ProductService.getById(pid);
List<ProductType> listType=prouctTypeService.listAll();
mv.addObject("product", product);
mv.addObject("listType", listType);
mv.setViewName("addProduct");
return mv;
}
/*
* 修改
*/
@RequestMapping("/updateproduct")
public String updatepro(Product product,int tid) {
ProductType productType=new ProductType();
productType.setId(tid);
product.setProductType(productType);
ProductService.update(product);
return "redirect:productlist";
}