maven构建ssm工程

2.1需求

在web工程的基础上实现SSM工程构建，实现对员工和部门的管理。

2.2数据库环境

创建数据库：maven

导入，maven.sql创建表

2.3定义pom.xml

maven工程首先要识别依赖，web工程实现SSM整合，需要依赖Spring、 springMVC、Mybatis等，在pom.xml添加工程如下依赖：

<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">

<groupId>com.igeek.maven</groupId>

<version>0.0.1-SNAPSHOT</version>

<groupId>junit</groupId>

<artifactId>junit</artifactId>

</dependency>

<groupId>javax.servlet</groupId>

<artifactId>servlet-api</artifactId>

<version>3.0-alpha-1</version>

<scope>provided</scope>

</dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-webmvc</artifactId>

<version>4.3.6.RELEASE</version>

</dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis</artifactId>

</dependency>

<groupId>org.mybatis</groupId>

<artifactId>mybatis-spring</artifactId>

</dependency>

<groupId>mysql</groupId>

<artifactId>mysql-connector-java</artifactId>

</dependency>

<groupId>com.alibaba</groupId>

<artifactId>druid</artifactId>

</dependency>

<groupId>org.aspectj</groupId>

<artifactId>aspectjweaver</artifactId>

</dependency>

<groupId>org.springframework</groupId>

<artifactId>spring-jdbc</artifactId>

<version>4.3.6.RELEASE</version>

</dependency>

<scope>runtime</scope>

</dependency>

<scope>runtime</scope>

</dependency>

<scope>runtime</scope>

</dependency>

<scope>provided</scope>

</dependency>

</dependencies>

<build>

<include>**/*.properties</include>

</includes>

</resource>

<directory>src/main/resources</directory>

<include>**/*.properties</include>

</includes>

</resource>

</resources>

<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-compiler-plugin</artifactId>

</configuration>

</plugin>

<groupId>org.eclipse.jetty</groupId>

<artifactId>jetty-maven-plugin</artifactId>

</httpConnector>

</webApp>

</configuration>

</plugin>

</plugins>

</build>

</project>

2.4dao

使用Mybatis作为持久层框架，可以使用Mybatis的逆向工程来生成我们需要的代码。

2.4.1domain模型类

在src/main/java创建模型类

部门实体

package com.igeekhome.ssm.domain;

import java.io.Serializable;

public class Department implements Serializable{

private Integer deptno;

private String dname;

private String loc;

public Integer getDeptno() {

return deptno;

}

public void setDeptno(Integer deptno) {

this.deptno = deptno;

}

public String getDname() {

return dname;

}

public void setDname(String dname) {

this.dname = dname == null ? null : dname.trim();

}

public String getLoc() {

return loc;

}

public void setLoc(String loc) {

this.loc = loc == null ? null : loc.trim();

}

员工实体

package com.igeekhome.ssm.domain;

import java.io.Serializable;

import java.math.BigDecimal;

import java.util.Date;

public class Employee implements Serializable{

private Integer empno;

private String ename;

private String job;

private Integer mgr;

private Date hiredate;

private BigDecimal sal;

private BigDecimal comm;

private Integer deptno;

public Integer getEmpno() {

return empno;

}

public void setEmpno(Integer empno) {

this.empno = empno;

}

public String getEname() {

return ename;

}

public void setEname(String ename) {

this.ename = ename == null ? null : ename.trim();

}

public String getJob() {

return job;

}

public void setJob(String job) {

this.job = job == null ? null : job.trim();

}

public Integer getMgr() {

return mgr;

}

public void setMgr(Integer mgr) {

this.mgr = mgr;

}

public Date getHiredate() {

return hiredate;

}

public void setHiredate(Date hiredate) {

this.hiredate = hiredate;

}

public BigDecimal getSal() {

return sal;

}

public void setSal(BigDecimal sal) {

this.sal = sal;

}

public BigDecimal getComm() {

return comm;

}

public void setComm(BigDecimal comm) {

this.comm = comm;

}

public Integer getDeptno() {

return deptno;

}

public void setDeptno(Integer deptno) {

this.deptno = deptno;

}

2.4.2Mapper配置文件

Department配置文件

<?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" >

</resultMap>

deptno, dname, loc

</sql>

select

from dept

where deptno = #{deptno,jdbcType=INTEGER}

</select>

delete from dept

where deptno = #{deptno,jdbcType=INTEGER}

</delete>

insert into dept (deptno, dname, loc

)

values (#{deptno,jdbcType=INTEGER}, #{dname,jdbcType=VARCHAR}, #{loc,jdbcType=VARCHAR}

)

</insert>

insert into dept

deptno,

</if>

dname,

</if>

loc,

</if>

</trim>

#{deptno,jdbcType=INTEGER},

</if>

#{dname,jdbcType=VARCHAR},

</if>

#{loc,jdbcType=VARCHAR},

</if>

</trim>

</insert>

update dept

<set >

dname = #{dname,jdbcType=VARCHAR},

</if>

loc = #{loc,jdbcType=VARCHAR},

</if>

</set>

where deptno = #{deptno,jdbcType=INTEGER}

</update>

update dept

set dname = #{dname,jdbcType=VARCHAR},

loc = #{loc,jdbcType=VARCHAR}

where deptno = #{deptno,jdbcType=INTEGER}

</update>

</mapper>

Employee配置文件

<?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" >

</resultMap>

empno, ename, job, mgr, hiredate, sal, comm, deptno

</sql>

select

from emp

where empno = #{empno,jdbcType=INTEGER}

</select>

delete from emp

where empno = #{empno,jdbcType=INTEGER}

</delete>

insert into emp (empno, ename, job,

mgr, hiredate, sal,

comm, deptno)

values (#{empno,jdbcType=INTEGER}, #{ename,jdbcType=VARCHAR}, #{job,jdbcType=VARCHAR},

#{mgr,jdbcType=INTEGER}, #{hiredate,jdbcType=TIMESTAMP}, #{sal,jdbcType=DECIMAL},

#{comm,jdbcType=DECIMAL}, #{deptno,jdbcType=INTEGER})

</insert>

insert into emp

empno,

</if>

ename,

</if>

job,

</if>

mgr,

</if>

hiredate,

</if>

sal,

</if>

comm,

</if>

deptno,

</if>

</trim>

#{empno,jdbcType=INTEGER},

</if>

#{ename,jdbcType=VARCHAR},

</if>

#{job,jdbcType=VARCHAR},

</if>

#{mgr,jdbcType=INTEGER},

</if>

#{hiredate,jdbcType=TIMESTAMP},

</if>

#{sal,jdbcType=DECIMAL},

</if>

#{comm,jdbcType=DECIMAL},

</if>

#{deptno,jdbcType=INTEGER},

</if>

</trim>

</insert>

update emp

<set >

ename = #{ename,jdbcType=VARCHAR},

</if>

job = #{job,jdbcType=VARCHAR},

</if>

mgr = #{mgr,jdbcType=INTEGER},

</if>

hiredate = #{hiredate,jdbcType=TIMESTAMP},

</if>

sal = #{sal,jdbcType=DECIMAL},

</if>

comm = #{comm,jdbcType=DECIMAL},

</if>

deptno = #{deptno,jdbcType=INTEGER},

</if>

</set>

where empno = #{empno,jdbcType=INTEGER}

</update>

update emp

set ename = #{ename,jdbcType=VARCHAR},

job = #{job,jdbcType=VARCHAR},

mgr = #{mgr,jdbcType=INTEGER},

hiredate = #{hiredate,jdbcType=TIMESTAMP},

sal = #{sal,jdbcType=DECIMAL},

comm = #{comm,jdbcType=DECIMAL},

deptno = #{deptno,jdbcType=INTEGER}

where empno = #{empno,jdbcType=INTEGER}

</update>

</mapper>

2.4.3Mapper接口

Department持久层接口

package com.igeekhome.ssm.dao;

import com.igeekhome.ssm.domain.Department;

public interface DepartmentMapper {

int deleteByPrimaryKey(Integer deptno);

int insert(Department record);

int insertSelective(Department record);

Department selectByPrimaryKey(Integer deptno);

int updateByPrimaryKeySelective(Department record);

int updateByPrimaryKey(Department record);

}

Employee持久层接口

package com.igeekhome.ssm.dao;

import com.igeekhome.ssm.domain.Employee;

public interface EmployeeMapper {

int deleteByPrimaryKey(Integer empno);

int insert(Employee record);

int insertSelective(Employee record);

Employee selectByPrimaryKey(Integer empno);

int updateByPrimaryKeySelective(Employee record);

int updateByPrimaryKey(Employee record);

}

2.4.4定义配置文件

在src/main/resources配置db.properties

driverClassName=com.mysql.jdbc.Driver

jdbc_url=jdbc:mysql://localhost:3306/maven?useUnicode=true&characterEncoding=utf8

jdbc_username=root

jdbc_password=root

在src/main/resources配置log4j.properties

### direct log messages to stdout ###

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

log4j.appender.stdout.Target=System.out

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

log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change 'info' to 'debug' ###

#在开发阶段日志级别使用debug

log4j.rootLogger=debug, stdout

### 在日志中输出sql的输入参数 ###

log4j.logger.org.hibernate.type=TRACE

在 src/main/resources创建applicationContext.xml定义Spring的配置

<?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:context="http://www.springframework.org/schema/context"

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

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

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd

http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

<context:component-scan base-package="com.igeekhome.ssm">

<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>

</context:component-scan>

<context:property-placeholder location="classpath:db.properties" />

</bean>

</bean>

<tx:advice id="transactionAdvice" transaction-manager="transactionManager">

<tx:attributes>

<tx:method name="add*" propagation="REQUIRED" />

<tx:method name="append*" propagation="REQUIRED" />

<tx:method name="insert*" propagation="REQUIRED" />

<tx:method name="save*" propagation="REQUIRED" />

<tx:method name="update*" propagation="REQUIRED" />

<tx:method name="modify*" propagation="REQUIRED" />

<tx:method name="edit*" propagation="REQUIRED" />

<tx:method name="delete*" propagation="REQUIRED" />

<tx:method name="remove*" propagation="REQUIRED" />

<tx:method name="repair" propagation="REQUIRED" />

<tx:method name="delAndRepair" propagation="REQUIRED" />

<tx:method name="get*" propagation="SUPPORTS" />

<tx:method name="find*" propagation="SUPPORTS" />

<tx:method name="load*" propagation="SUPPORTS" />

<tx:method name="search*" propagation="SUPPORTS" />

<tx:method name="datagrid*" propagation="SUPPORTS" />

<tx:method name="*" propagation="SUPPORTS" />

</tx:attributes>

</tx:advice>

<aop:config>

<aop:pointcut id="transactionPointcut" expression="execution(* com.igeekhome.ssm.service..*Impl.*(..))" />

<aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />

</aop:config>

</bean>

<list>

<value>com.igeekhome.ssm.service.*</value>

</list>

</property>

</bean>

<aop:config>

<aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />

</aop:config>

</beans>

在 src/main/resources创建mybatis.xml

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

<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

</configuration>

在 src/main/resources创建spring-mybatis.xml

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

<beans xmlns="http://www.springframework.org/schema/beans"

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

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

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">

</bean>

</bean>

</beans>

2.4.5单元测试

在src/test/java创建单元测试类

测试Employee的Dao方法

package com.igeekhome.ssm.tests;

import org.junit.Test;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.igeekhome.ssm.dao.EmployeeMapper;

import com.igeekhome.ssm.domain.Employee;

public class EmployeeTest {

@Test

public void testFindEmployeeById(){

//加载配置文件

ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml", "spring-mybatis.xml"});

//获取dao

EmployeeMapper employeeMapper = applicationContext.getBean(EmployeeMapper.class);

//查询数据

Employee employee = employeeMapper.selectByPrimaryKey(7369);

//查看数据

System.out.println(employee.getEname());

//关闭上下文

applicationContext.close();

}

测试Department的Dao方法

package com.igeek.test;

import org.junit.Test;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.igeek.ssm.mapper.DeptMapper;

import com.igeek.ssm.pojo.Dept;

/**

* @author www.igeehome.com

* TODO

public class DeptTest {

@Test

public void testGetDept() {

//加载spring配置文件

ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(

new String[] { "applicationContext.xml", "spring-mybatis.xml" });

//获取empMapper

DeptMapper mapper = applicationContext.getBean(DeptMapper.class);

//通过mapper查询

Dept dept = mapper.selectByPrimaryKey(20);

System.out.println(dept);

}

2.5Service

2.5.1定义Service接口

EmployeeService接口

package com.igeekhome.ssm.service;

import com.igeekhome.ssm.domain.Employee;

public interface EmployeeService {

int deleteByPrimaryKey(Integer empno);

int insert(Employee record);

int insertSelective(Employee record);

Employee selectByPrimaryKey(Integer empno);

int updateByPrimaryKeySelective(Employee record);

int updateByPrimaryKey(Employee record);

}

DepartmentService接口

package com.igeekhome.ssm.service;

import com.igeekhome.ssm.domain.Department;

public interface DepartmentService {

int deleteByPrimaryKey(Integer deptno);

int insert(Department record);

int insertSelective(Department record);

Department selectByPrimaryKey(Integer deptno);

int updateByPrimaryKeySelective(Department record);

int updateByPrimaryKey(Department record);

}

2.5.2定义Service接口的实现类

EmployeeService接口实现类

package com.igeekhome.ssm.service.impl;

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

import org.springframework.stereotype.Service;

import com.igeekhome.ssm.dao.EmployeeMapper;

import com.igeekhome.ssm.domain.Employee;

import com.igeekhome.ssm.service.EmployeeService;

@Service

public class EmployeeServiceImpl implements EmployeeService {

@Autowired

private EmployeeMapper employeeMapper;

@Override

public int deleteByPrimaryKey(Integer empno) {

return employeeMapper.deleteByPrimaryKey(empno);

}

@Override

public int insert(Employee record) {

return employeeMapper.insert(record);

}

@Override

public int insertSelective(Employee record) {

return employeeMapper.insertSelective(record);

}

@Override

public Employee selectByPrimaryKey(Integer empno) {

return employeeMapper.selectByPrimaryKey(empno);

}

@Override

public int updateByPrimaryKeySelective(Employee record) {

return employeeMapper.updateByPrimaryKeySelective(record);

}

@Override

public int updateByPrimaryKey(Employee record) {

return employeeMapper.updateByPrimaryKey(record);

}

DepartmentServiceImpl接口实现类

package com.igeekhome.ssm.service.impl;

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

import org.springframework.stereotype.Service;

import com.igeekhome.ssm.dao.DepartmentMapper;

import com.igeekhome.ssm.domain.Department;

import com.igeekhome.ssm.service.DepartmentService;

@Service

public class DepartmentServiceImpl implements DepartmentService {

@Autowired

private DepartmentMapper departmentMapper;

@Override

public int deleteByPrimaryKey(Integer deptno) {

return departmentMapper.deleteByPrimaryKey(deptno);

}

@Override

public int insert(Department record) {

return departmentMapper.insert(record);

}

@Override

public int insertSelective(Department record) {

return departmentMapper.insertSelective(record);

}

@Override

public Department selectByPrimaryKey(Integer deptno) {

return departmentMapper.selectByPrimaryKey(deptno);

}

@Override

public int updateByPrimaryKeySelective(Department record) {

return departmentMapper.updateByPrimaryKeySelective(record);

}

@Override

public int updateByPrimaryKey(Department record) {

return departmentMapper.updateByPrimaryKey(record);

}

2.6Controller

2.6.1定义控制器

package com.igeekhome.ssm.controller;

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

import org.springframework.stereotype.Controller;

import org.springframework.ui.ModelMap;

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

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

import com.igeekhome.ssm.domain.Employee;

import com.igeekhome.ssm.service.EmployeeService;

@Controller

public class EmployeeController {

@Autowired

private EmployeeService employeeService;

@RequestMapping(value="/emp",method=RequestMethod.GET)

public String emp(){

return "employee";

}

@RequestMapping(value="/emp",method=RequestMethod.GET)

public String findEmployeeByEmpno(int empno,ModelMap map){

Employee employee = employeeService.selectByPrimaryKey(empno);

map.put("employee", employee);

return "employee_info";

}

2.6.1定义SpringMVC配置文件

在src/main/resources配置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: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-4.3.xsd

http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd

http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">

<context:component-scan base-package="com.igeekhome.ssm.controller" />

</bean>

<mvc:default-servlet-handler/>

<mvc:annotation-driven></mvc:annotation-driven>

</beans>

定义web.xml配置文件

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

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"

id="WebApp_ID" version="2.5">

<servlet-name>springDispatcherServlet</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>

<load-on-startup>1</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>springDispatcherServlet</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext.xml,classpath:spring-mybatis.xml</param-value>

</context-param>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<description>字符集过滤器</description>

<filter-name>encodingFilter</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

<description>字符集编码</description>

<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>

</web-app>

2.7Jsp

创建employee.jsp如下：

<%@ 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>

</head>

<body>

</form>

</body>

</html>

创建employee_info.jsp如下：

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

pageEncoding="UTF-8"%>

<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

</head>

<body>

员工编号：${employee.empno}<br>

员工姓名：${employee.ename}<br>

员工工作：${employee.job}<br>

员工薪资：${employee.sal}<br>

员工奖金：${employee.comm==null?0:employee.comm}<br>

员工入职日期：<fmt:formatDate value="${employee.hiredate}" pattern="yyyy-M-d" /><br>

</body>

</html>