Spring+Spring MVC+MyBatis環境搭建

本文轉載自查看原文 2017-12-30 17:20 4882 Maven/ Spring MVC/ 配置/ mybatis/ MyBatis/ Spring/ ssm

源碼：

密碼: f254

其中ssm是注解方式，ssm2是xml方式

1、Maven構建一個maven-archetype-webapp項目，在pom.xml中添加相關的jar包依賴

        <!-- mybatis依賴 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <!-- MySQL jdbc驅動 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.45</version>
        </dependency>

        <!-- spring mvc相關依賴 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!-- spring jdbc依賴 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>
        <!-- spring事務 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.0.2.RELEASE</version>
        </dependency>

        <!-- jackson依賴 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.3</version>
        </dependency>

        <!-- mybatis-spring包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

        <!-- c3p0數據連接池 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

2、在resources目錄下添加springmvc-config.xml文件，並進行配置

<?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: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">
    <!-- 包掃描 -->
    <context:component-scan base-package="com.app.*" />
    <!-- 注解驅動 -->
    <mvc:annotation-driven />
    <!-- html文件處理 -->
    <mvc:resources mapping="/*.html" location="/" />
    <!-- 視圖解析 -->
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/jsp/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
</beans>

3、在resources目錄添加db.properties文件，配置數據庫連接屬性

dataSource.driverClass=com.mysql.jdbc.Driver
dataSource.jdbcUrl=jdbc:mysql://127.0.0.1:3306/ssm
dataSource.user=root
dataSource.password=root
dataSource.maxPoolSize=20
dataSource.maxIdleTime = 1000
dataSource.minPoolSize=5
dataSource.initialPoolSize=5

4、在resources目錄下添加applicationsContext.xml文件，並進行配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mybatis="http://mybatis.org/schema/mybatis-spring" 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" xmlns:tx="http://www.springframework.org/schema/tx"
    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
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc.xsd
                        http://www.springframework.org/schema/tx
                        http://www.springframework.org/schema/tx/spring-tx.xsd
                        http://mybatis.org/schema/mybatis-spring 
                        http://mybatis.org/schema/mybatis-spring.xsd ">

    <!-- mybatis:scan會將com.app.mapper包里的所有接口當作mapper配置，之后可以自動引入mapper類 -->
    <mybatis:scan base-package="com.app.mapper" />

    <!-- 掃描com.app包下面的java文件，有Spring的相關注解的類，則把這些類注冊為Spring的bean -->
    <context:component-scan base-package="com.app" />

    <!-- 使用PropertyOverrideConfigurer后處理器加載數據源參數 -->
    <context:property-override location="classpath:db.properties" />

    <!-- 配置c3p0數據源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" />

    <!-- 配置SqlSessionFactory，org.mybatis.spring.SqlSessionFactoryBean是Mybatis社區開發用於整合Spring的bean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
        p:dataSource-ref="dataSource" />

    <!-- JDBC事務管理器 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
        p:dataSource-ref="dataSource" />

    <!-- 啟用支持annotation注解方式事務管理 -->
    <tx:annotation-driven transaction-manager="transactionManager" />

</beans>

5、配置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"
    id="WebApp_ID" version="3.1">
    <display-name>Archetype Created Web Application</display-name>
    <!-- 配置spring核心監聽器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- contextConfigLocation參數用來指定Spring的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext*.xml</param-value>
    </context-param>
    <!-- 定義Spring MVC的前端控制器 -->
    <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:springmvc-config.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <!-- 讓Spring MVC的前端控制器攔截所有請求 -->
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!-- 編碼過濾器 -->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

到此基本的環境算搭建完畢，下面步驟為測試環境是否可用，如只是參考環境搭建，下面步驟可忽略。

6、創建數據庫與表

CREATE DATABASE ssm;

USE ssm;

CREATE TABLE `tb_user` (
    `id` INT (11) NOT NULL AUTO_INCREMENT,
    `userName` VARCHAR (18) DEFAULT NULL,
    `birth` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`)
);

7、創建一個映射數據表的User實體類

package com.app.entity;

import java.io.Serializable;
import java.util.Date;

import org.springframework.format.annotation.DateTimeFormat;

import com.fasterxml.jackson.annotation.JsonFormat;

@SuppressWarnings("serial")
public class User implements Serializable {

    private Integer id;
    private String userName;
    @DateTimeFormat(pattern = "yyyy-MM-dd")
    private Date birth;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+08")
    public Date getBirth() {
        return birth;
    }

    public void setBirth(Date birth) {
        this.birth = birth;
    }

}

8、創建一個操作tb_user表的UserMapper接口（注意是接口），添加兩個方法用於后面的測試

package com.app.mapper;

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Options;
import org.apache.ibatis.annotations.Select;

import com.app.entity.User;

public interface UserMapper {

    @Select("select * from tb_user where id = #{id}")
    User findUserById(Integer id);

    @Insert("insert into tb_user(userName, birth) values(#{userName}, #{birth})")
    @Options(useGeneratedKeys = true, keyProperty = "id")
    public Integer saveUser(User user);
}

9、Service層的實現

UserService接口

package com.app.servcie;

import com.app.entity.User;

public interface UserService {

    User findUserById(Integer id);

    Integer saveUser(User user);
}

UserService接口的實現類UserServiceImp

package com.app.servcie;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.app.entity.User;
import com.app.mapper.UserMapper;

@Service(value = "userService")
public class UserServiceImp implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public Integer saveUser(User user) {
        return userMapper.saveUser(user);
    }

    @Override
    public User findUserById(Integer id) {
        return userMapper.findUserById(id);
    }

}

10、Controller層的實現（將數據添加到數據庫，並將添加后的數據信息返回到客戶端顯示）

package com.app.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.app.entity.User;
import com.app.servcie.UserService;

@Controller
public class UserController {
    @Autowired
    private UserService userService;

    @RequestMapping("/insertUser")
    @ResponseBody
    public User insertUser(User user) {
        userService.saveUser(user);
        User resultUser = userService.findUserById(user.getId());        
        return resultUser;
    }
}

11、在webapp根目錄下創建一個index.jsp（一般默認已經有了），添加如下代碼

<%@ page language="java" contentType="text/html; charset=UTF-8"
    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>添加用戶</title>
<style type="text/css">
#content {
    text-align: center;
}
</style>
</head>
<body>
    <div id="content">
        <form method="post" action="insertUser">
            姓名：<input type="text" id="userName" name="userName"><br>
            生日：<input type="text" id="birth" name="birth"><br> <input
                type="submit" value="確定">
        </form>
    </div>
</body>
</html>

12、運行部署項目進行測試

在index.jsp頁面填寫相關的數據

執行后的效果

被添加進數據庫中的數據

-------------------- 基於XML方式 --------------------

上面測試部分使用的注解方式，如果要使用xml方式，有三個地方需要修改一下。

1、applicationContext.xml文件里面的sqlSessionFactory下需要添加*Mapper.xml文件的路徑映射（下面黃色背景處）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mybatis="http://mybatis.org/schema/mybatis-spring" 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" xmlns:tx="http://www.springframework.org/schema/tx"
    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
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc.xsd
                        http://www.springframework.org/schema/tx
                        http://www.springframework.org/schema/tx/spring-tx.xsd
                        http://mybatis.org/schema/mybatis-spring 
                        http://mybatis.org/schema/mybatis-spring.xsd ">

    <!-- mybatis:scan會將com.app.mapper包里的所有接口當作mapper配置，之后可以自動引入mapper類 -->
    <mybatis:scan base-package="com.app.mapper" />

    <!-- 掃描com.app包下面的java文件，有Spring的相關注解的類，則把這些類注冊為Spring的bean -->
    <context:component-scan base-package="com.app" />

    <!-- 使用PropertyOverrideConfigurer后處理器加載數據源參數 -->
    <context:property-override location="classpath:db.properties" />

    <!-- 配置c3p0數據源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" />

    <!-- 配置SqlSessionFactory，org.mybatis.spring.SqlSessionFactoryBean是Mybatis社區開發用於整合Spring的bean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
        p:dataSource-ref="dataSource">
        <property name="mapperLocations">
            <list>
                <value>classpath*:com/app/mapper/*Mapper.xml</value>
            </list>
        </property>
    </bean>

    <!-- JDBC事務管理器 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
        p:dataSource-ref="dataSource" />

    <!-- 啟用支持annotation注解方式事務管理 -->
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

2、去掉UserMapper.java接口中的注解

package com.app.mapper;

import com.app.entity.User;

public interface UserMapper {

    User findUserById(Integer id);
    
    public Integer saveUser(User user);
}

3、添加SQL Mapper的UserMapper.xml文件，並添加相應的SQL語句映射（其實跟上面的注解方式差不多，只是SQL跟接口方法分開了而已）

<?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.app.mapper.UserMapper">
    <select id="findUserById" parameterType="int" resultType="com.app.entity.User">
        select
        * from tb_user
        where id = #{id}
    </select>
    <insert id="saveUser" parameterType="com.app.entity.User">
        insert into
        tb_user(userName, birth) values(#{userName}, #{birth})
        <selectKey keyColumn="id" resultType="int" keyProperty="id"
            order="AFTER">
            select LAST_INSERT_ID()
        </selectKey>
    </insert>
</mapper>

其他地方的配置寫法跟注解方式一樣，不用修改。

-------------------- 額外內容 --------------------

分頁配置參考（接本文檔）：

http://www.cnblogs.com/QingXiaxu/p/8247164.html

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