spring+springmvc+mybatis+maven入门实战(超详细教程)

spring+springmvc+mybatis+maven入门实战(超详细教程)

入门篇

本篇文章涉及到的技术有spring、springmvc、mybatis、mysql、xml、maven、jsp、javase、javaweb、eclipse

下面开始本篇文章的教程

一、新建maven项目

一般通过这种方法新建maven项目

假如你的eclipse不能通过上面的方法新建maven项目，也可以通过下面的方法新建maven项目

看到下面的项目结构，说明你已经成功创建了一个maven项目。但是这个项目报错，根据标准的web项目结构来说，目前这个项目缺少了web.xml

利用eclipse自动生成web.xml

看到这个项目已经没有报错，说明已经成功生成了web.xml

二、Maven配置

下面是该项目的maven配置，在pom.xml进行以下配置

xmlns:xsi="http://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">

4.0.0

com.wffanshao

test

0.0.1-SNAPSHOT

war

4.3.6.RELEASE

org.springframework

spring-aop

${spring.version}

org.springframework

spring-aspects

${spring.version}

org.springframework

spring-beans

${spring.version}

org.springframework

spring-context

${spring.version}

org.springframework

spring-core

${spring.version}

org.springframework

spring-expression

${spring.version}

org.springframework

spring-jdbc

${spring.version}

org.springframework

spring-tx

${spring.version}

org.springframework

spring-web

${spring.version}

org.springframework

spring-webmvc

${spring.version}

org.mybatis

mybatis

3.4.2

org.mybatis

mybatis-spring

1.3.1

aopalliance

aopalliance

1.0

asm

asm

3.3.1

org.aspectj

aspectjweaver

1.8.1

cglib

cglib

2.2.2

mysql

mysql-connector-java

5.1.44

commons-dbcp

commons-dbcp

1.4

commons-pool

commons-pool

1.6

commons-logging

commons-logging

1.1.1

javax.servlet

jstl

1.2

org.slf4j

slf4j-api

1.7.5

org.slf4j

slf4j-log4j12

1.7.5

org.javassist

javassist

3.18.1-GA

test

org.apache.maven.plugins

maven-compiler-plugin

1.8

1.8

people.apache.snapshots

http://repository.apache.org/content/groups/snapshots-group/

false

true

xmlns:xsi="http://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">

4.0.0

com.wffanshao

test

0.0.1-SNAPSHOT

war

4.3.6.RELEASE

org.springframework

spring-aop

${spring.version}

org.springframework

spring-aspects

${spring.version}

org.springframework

spring-beans

${spring.version}

org.springframework

spring-context

${spring.version}

org.springframework

spring-core

${spring.version}

org.springframework

spring-expression

${spring.version}

org.springframework

spring-jdbc

${spring.version}

org.springframework

spring-tx

${spring.version}

org.springframework

spring-web

${spring.version}

org.springframework

spring-webmvc

${spring.version}

org.mybatis

mybatis

3.4.2

org.mybatis

mybatis-spring

1.3.1

aopalliance

aopalliance

1.0

asm

asm

3.3.1

org.aspectj

aspectjweaver

1.8.1

cglib

cglib

2.2.2

mysql

mysql-connector-java

5.1.44

commons-dbcp

commons-dbcp

1.4

commons-pool

commons-pool

1.6

commons-logging

commons-logging

1.1.1

javax.servlet

jstl

1.2

org.slf4j

slf4j-api

1.7.5

org.slf4j

slf4j-log4j12

1.7.5

org.javassist

javassist

3.18.1-GA

test

org.apache.maven.plugins

maven-compiler-plugin

1.8

1.8

people.apache.snapshots

http://repository.apache.org/content/groups/snapshots-group/

false

true

三、搭建ssm环境

1.在src/main/java新建4个包、在src/main/resources下新建2个包以及2个properties文件、在webapp/WEB-INF下新建1个文件夹，包名、文件名以及文件夹名如图所示。

src/main/java：一般用来存放java文件

src/main/resources：一般用来存放ssm相关的配置文件

src/test/java和src/test/resources：一般用来存放测试文件，这两个包下的文件不会被编译、打包等

webapp/WEB-INF：一般用来存放普通用户访问不到而管理员可以访问的web动态页面

2.配置log4j日志文件

log4j.properties代码如下，有些网友在复制楼主的代码会产生乱码，这是由于eclipse的properties文件默认编码为ISO-8859-1

我们需要将编码设置为UTF-8

##### Global logging configuration

##### 在开发环境下日志级别设置成DEBUG，生产环境设置成INFO或ERROR

log4j.rootLogger=DEBUG, stdout

##### mybatis日志配置

log4j.logger.org.mybatis.example.BlogMapper=TRACE

##### 输出到控制台，这里也可以输出到文件中，可以自己设置

log4j.appender.stdout=org.apache.log4j.ConsoleAppender

log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

3.配置数据源文件

db.properties代码如下,此处采用非硬编码的方式对数据源进行配置，也就是将数据源相关信息配置到db.properties中，采用非硬编码的好处是方便项目日后的维护以及方便拓展。当然你也可是采用硬编码方式（传统方式）进行配置，也就是直接在spring配置文件中配置。

jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/ssm

jdbc.username=root

jdbc.password=test

4.在mysql中新建ssm数据库，并在ssm数据库中新建一个user表，表的结构如图所示

5.com.wffanshao.po中新建一个PO类，名字为User

User.java的代码如下

package com.wffanshao.po;

/**

* @描述 用户PO类

* @author WF帆少

* @微信 13025261795

*

*/

public class User {

private String username; // 用户名

private String password; // 用户密码

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;

}

}

6.在com.wffanshao.mapper中新建UserMapper接口和UserMapper.xml

UserMapper.java代码如下

package com.wffanshao.mapper;

import com.wffanshao.po.User;

/**

* @描述 用户Mapper接口

* @author WF帆少

* @微信 13025261795

*

*/

public interface UserMapper {

/**

* @描述 添加用户

* @param user

* @throws Exception

*/

boolean insertUser(User user) throws Exception;

}

UserMapper.xml代码如下

INSERT INTO user(username, password)

VALUES(#{username}, #{password})

7.在com.wffanshao.service中新建UserService接口

UserService.java代码如下

package com.wffanshao.service;

import com.wffanshao.po.User;

/**

* @描述 用户Service接口

* @author WF帆少

* @微信 13025261795

*

*/

public interface UserService {

/**

* @描述 添加用户

* @param user

* @throws Exception

*/

boolean insertUser(User user) throws Exception;

}

8.在com.wffanshao.service.impl中新建UserServiceImpl类

UserServiceImpl.java代码如下

package com.wffanshao.service.impl;

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

import com.wffanshao.mapper.UserMapper;

import com.wffanshao.po.User;

import com.wffanshao.service.UserService;

/**

* @描述 用户Service接口的实现类

* @author WF帆少

* @微信 13025261795

*

*/

public class UserServiceImpl implements UserService{

@Autowired

private UserMapper userMapper;

/**

* @描述 添加用户

* @param user

* @throws Exception

*/

@Override

public boolean insertUser(User user) throws Exception {

return userMapper.insertUser(user);

}

}

9..在com.wffanshao.controller中新建UserController类

UserController.java代码如下

package com.wffanshao.controller;

import javax.servlet.http.HttpServletRequest;

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

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PostMapping;

import com.wffanshao.po.User;

import com.wffanshao.service.UserService;

/**

* @描述 用户Controller

* @author WF帆少

* @微信 13025261795

*

*/

@Controller

public class UserController {

@Autowired

private UserService userService;

/**

* @描述 跳转到login.jsp

* @return

*/

@GetMapping("/login")

public String login() {

return "login";

}

/**

* @描述 从login.jsp中的表单提交中获取数据并将它们添加到数据库中，

* @return 如果添加成功，跳转到success.jsp，否则，跳转到fail.jsp

*/

@PostMapping("/insertUser")

public String insertUser(HttpServletRequest request) throws Exception {

User user = new User();

String username = request.getParameter("username");

String password = request.getParameter("password");

user.setUsername(username);

user.setPassword(password);

boolean isSuccess = false;

isSuccess = userService.insertUser(user);

if (isSuccess) {

return "success";HkNpO

} else {

return "fail";

}

}

}

10.在webapp/WEB-INF/jsp下新建login.jsp、success.jsp、fail.jsp

login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

success.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

fail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

11.在src/main/resources/spring中新建4个xml文件

application-dao.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

application-service.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

applicationContext-transaction.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.orghttp:///schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.orghttp:///schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

springmvc.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

base-package="com.wffanshao.controller">

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:mvc="http://springframework.org/schema/mvc"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.2.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context-3.2.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop-3.2.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx-3.2.xsd">

base-package="com.wffanshao.controller">

base-package="com.wffanshao.controller">

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

四、配置tomcat服务器

注意：博主使用的是tomcat7

这里没有教大家如何下载安装配置tomcat服务器，请大家自行学习，或者等博主后续教程补上。这里只教大家如何用eclipse配置tomcat服务器，需要提前下载解压安装好tomcat才能进行此步操作

配置好tomcat服务器之后，你会发现项目报错了

打开查看报错原因，你会发现该项目是因为无法解析jsp而报错，我们可以通过设置项目属性来解决该问题，即设置该项目的运行环境

设置完成后你会发项目已经不报错了

四、装配项目

将该项目添加到tomcat服务器中

到这里，已经成功将项目装配到tomcat服务器中了。

五、启动tomcat服务器

启动服务器

看到started并且控制台没有报错说明服务器启动成功

六、测试

在浏览器地址栏中http://localhost:8080/test/login，tomcat服务器默认端口为8080

接着输入用户名和密码，然后点击注册

注册成功会跳转到成功页面，并且在数据库中能查询到我们刚才输入的用户名和密码，

看到下面2张图所示的内容，证明ssm环境整合成功

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