SSM:Spring+SpringMVC+MyBatis整理(一)

1、项目创建目录：

2、pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<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>4.0.0</modelVersion>

  <groupId>vege</groupId>
  <artifactId>vege</artifactId>
  <version>1.0-SNAPSHOT</version>

    <properties>
        <!-- spring版本号 -->
        <spring.version>4.1.0.RELEASE</spring.version>
        <!-- mybatis版本号 -->
        <mybatis.version>3.4.0</mybatis.version>
        <!-- log4j日志文件管理包版本 -->
        <slf4j.version>1.7.7</slf4j.version>
        <log4j.version>1.2.17</log4j.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <!-- 表示开发的时候引入，发布的时候不会加载此包 -->
            <scope>test</scope>
        </dependency>
        <!-- spring核心包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-oxm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- mybatis核心包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <!-- mybatis/spring包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
        <!-- 导入java ee jar 包 -->
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>7.0</version>
        </dependency>
        <!-- 导入Mysql数据库链接jar包 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.30</version>
        </dependency>
        <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.2.2</version>
        </dependency>
        <!-- JSTL标签类 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- 日志文件管理包 -->
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>


        <!-- 格式化对象，方便输出日志 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.1.41</version>
        </dependency>


        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log end -->
        <!-- 映入JSON -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>
        <!-- 上传组件包 -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.9</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.5</version>
        </dependency>

    </dependencies>

    <build>


        <resources>
            <!--编译之后包含xml-->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>

    </build>
</project>

目前只整理了SpringMVC以及Spring自动注入。
涉及文件：
spring-mvc.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:p="http://www.springframework.org/schema/p"
       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-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <!-- 自动扫描该包，使SpringMVC认为包下用了@Controller注解的类是控制器 -->
    <context:component-scan base-package="com.vege.controller" />
    <mvc:default-servlet-handler />
    <mvc:annotation-driven />
    <!-- 定义跳转的文件的前后缀 ，视图模式配置-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- controller最后返回的值xx，则页面即是webapp/jsp/xx.jsp -->
        <property name="prefix" value="/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

自动注入重点：

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

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <display-name>Archetype Created Web Application</display-name>
    <!-- Spring整合mybatis所使用的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mybatis.xml</param-value>
    </context-param>
    <!-- 编码过滤器 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- Spring监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 防止Spring内存溢出监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>

    <!-- Spring MVC servlet -->
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>

</web-app>

java代码部分

由底层开始一个个写
1、model：UserDto.java

package com.vege.model;

public class UserDto {
    private String username;

    private String password;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username == null ? null : username.trim();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password == null ? null : password.trim();
    }
}

2、Dao:UserDao.java IUserDao.java

package com.vege.dao;

import com.vege.model.UserDto;

public interface IUserDao {
    int insert(UserDto record);
}

package com.vege.dao;

/**
 * Created by 59258 on 2017/12/29.
 */

import com.vege.model.UserDto;
import org.springframework.stereotype.Repository;


@Repository
public class UserDao implements IUserDao {
    public String yes() {
        System.out.println("hahaha");
        return "yes+";
    }

    @Override
    public int insert(UserDto record) {
        System.out.println("hahahage");
        return 0;
    }

}

3、Services：UserSerVice.java UserSerViceImpl.java

package com.vege.service;

import com.vege.model.UserDto;

/**
 * Created by 59258 on 2017/12/28.
 */
public interface UserService {
    public int insert(UserDto userDto);
}

package com.vege.service;

import javax.annotation.Resource;

import com.vege.dao.IUserDao;
import com.vege.model.UserDto;
import org.springframework.stereotype.Service;

import com.vege.dao.UserDao;

@Service
public class UserServiceImpl implements UserService {
    @Resource(name = "userDao")
    private IUserDao iUserDao;

    public void setUserDao(UserDao userDao) {
        this.iUserDao = userDao;
    }

    @Override
    public int insert(UserDto userDto) {
        System.out.println("hahaha");
        iUserDao.insert(userDto);
        return 0;
    }
}

4、controller :UserController.java

package com.vege.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;


import com.vege.model.UserDto;
import com.vege.service.UserService;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.stereotype.Controller;
@Controller
@RequestMapping("/user")
public class UserController {
    public void setUserService(UserService userService) {
        this.userService = userService;
    }

    @Resource(name = "userServiceImpl")
    private UserService userService;

    @RequestMapping("/showUser")
    public String toIndex(HttpServletRequest request,Model model){
        UserDto userDto= new UserDto();
        userDto.setUsername("测试");
        this.userService.insert(userDto);
        model.addAttribute("user", userDto);
        System.out.println("hihi");
        return "showUser";
    }
}

启动服务：访问地址，http://localhost:8080/项目名/user/showUser
由于本人tomcat设置问题：http://localhost/user/showUser即可访问了。

说一下上面出现的一些注解

@RequestMapping(“/user”)：请求对应
@RequestMapping(“/showUser”)：请求对应
@Resource(name = “userServiceImpl”)：这里也可以用@AutoWired，都是用来装配bean，可以写在属性或者setter方法上。推荐使用Resource，可以灵活采用name以及type装配bean。
@Controller：涉及配置controller，即配置文件spring-mvc.xml中：<context:component-scan base-package="com.vege.controller" />,同时也是自动注入中控制层的意思，即为bean的controller层。
@Service：自动注入bean中service层的意思。
@Repository：自动注入bean中dao层的意思。

jsp

showUser.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
<html>  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<title>Hello World</title>  
</head>  
<body>  
HIHI
${user.userName}
</body>  
</html>  

启动服务：访问地址，http://localhost:8080/项目名/user/showUser
由于本人tomcat设置问题：http://localhost/user/showUser即可访问了。

OK。

之后整理了mybatis后会继续写第二章。