使用maven进行SSM整合(IDEA)

ssm整合，是指什么？

1. Spring SpringMVC Mybatis ，简称ssm
2. Spring整合SpringMVC
3. Spring整合Mybatis

整合实现

一.创建一个maven工程

二.导入依赖坐标

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>

    <groupId>com.csdn.demogroupId>
    <artifactId>csdnartifactId>
    <version>1.0-SNAPSHOTversion>
    <packaging>warpackaging>

    <dependencies>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.5.1version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.6version>
            <scope>runtimescope>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>5.1.6.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.1.6.RELEASEversion>
        dependency>
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>javax.servlet-apiartifactId>
            <version>3.1.0version>
            <scope>providedscope>
        dependency>
        <dependency>
            <groupId>jstlgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>

        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.1.6.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.1version>
        dependency>
    dependencies>
project>

三.创建工程模块

这里注意在创建resources中的映射文件时,注意要以下图中的方式创建目录

User实体类

package com.csdn.domain;
import java.io.Serializable;
public class User implements Serializable {
    private Integer uid;
    private String username;
    private String password;

    public User() {
    }

    public User(Integer uid, String username, String password) {
        this.uid = uid;
        this.username = username;
        this.password = password;
    }

    public Integer getUid() {
        return uid;
    }

    public void setUid(Integer uid) {
        this.uid = uid;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

UserDao接口

package com.csdn.dao;
import com.csdn.domain.User;
import java.util.List;
public interface UserDao {
    public List<User> findAll();
}

UserDao映射文件

<mapper namespace="com.csdn.dao.UserDao">
    <select id="findAll" resultType="com.csdn.domain.User">
        select * from user
    select>
mapper>

Service接口和实现

package com.csdn.service;
import com.csdn.domain.User;
import java.util.List;
public interface UserService {
    public List<User> findAll();
}
//=============================
package com.csdn.service;
import com.csdn.dao.UserDao;
import com.csdn.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;

    @Override
    public List<User> findAll() {
        return userDao.findAll();
    }
}

Controller层

package com.csdn.web;

import com.csdn.domain.User;
import com.csdn.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private HttpServletRequest request;

    @RequestMapping("/findAll")
    public String findAll(){
        List<User> users = userService.findAll();
        request.setAttribute("users",users);
        return "User";
    }
}

Spring整合mybatis的配置文件applicationContext.xml

<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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    
    <context:component-scan base-package="com.csdn.service"/>

    
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://127.0.0.1/data"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="typeAliasesPackage" value="com.csdn.domain"/>
    bean>

    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.csdn.dao"/>
    bean>
beans>

SpringMVC配置文件springmvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    
    <context:component-scan base-package="com.csdn.web"/>
    
    <mvc:annotation-driven/>
    
    <mvc:default-servlet-handler/>

    
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    bean>
beans>

展示数据的jsp页面User.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
<table>
    <tr>
        <td>索引td>
        <td>用户名td>
        <td>密码td>
    tr>
    <c:forEach items="${users}" var="user">
        <tr>
            <td>${user.uid}td>
            <td>${user.username}td>
            <td>${user.password}td>
        tr>
    c:forEach>
table>
body>
html>

web.xml配置文件,该配置文件中可能会有些报错,不影响程序运行

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
         http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    
    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:applicationContext.xmlparam-value>
    context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
    listener>

    
    <servlet>
        <servlet-name>dispatcherServletservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:springmvc.xmlparam-value>
        init-param>
    servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServletservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>

    
    <filter>
        <filter-name>characterEncodingfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>characterEncodingfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

web-app>

首页index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
<a href="user/findAll">点击跳转a>
body>
html>

四.将项目部署到tomcat上

运行tomcat,查看结果