基于SSM框架学生管理系统的实现

这是我一年前做的项目的，算是SSM框架入门的实例，maven管理工具所用到的仓库私服为阿里云的仓库。



整个项目的目录：



jdbc.properties是对数据库信息的配置：

#mysql version database setting
jdbc.driver=com.mysql.jdbc.Driver
jdbc.username=root
jdbc.password=
jdbc.url=jdbc\:mysql\://127.0.0.1\:3306/test?useUnicode=true&characterEncoding=UTF-8

service-context.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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd" default-autowire="byName" default-lazy-init="true">

<description>Spring-database配置</description>

<context:component-scan base-package="com.HelloWorld">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>

<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:jdbc.properties</value>
</list>
</property>
</bean>

<!-- mybatis Dao -->
<bean id="myBatisDao" class="com.HelloWorld.orm.mybatis.MyBatisDao" />

<!-- 数据源配置,使用应用内的DBCP数据库连接池 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<!-- Connection Info -->
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />

<!-- Connection Pooling Info -->
<property name="initialSize" value="5" />
<property name="maxActive" value="100" />
<property name="maxIdle" value="30" />
<property name="maxWait" value="500" />
<property name="poolPreparedStatements" value="false" />
<property name="defaultAutoCommit" value="false" />
</bean>

<!-- mybatis配置 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:mybatis-config.xml" />
</bean>

<!-- 事务管理器配置,单数据源事务 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>

<aop:config proxy-target-class="true">
<aop:advisor pointcut="execution(* com.bolo.examples..*Manager.*(..))" advice-ref="txAdvice" />
</aop:config>

<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="get*" read-only="true" />
<tx:method name="find*" read-only="true" />
<tx:method name="query*" read-only="true" />
<tx:method name="is*" read-only="true" />
<tx:method name="*" propagation="REQUIRED" rollback-for="Exception" />
</tx:attributes>
</tx:advice>
</beans>

servlet-context.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-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> 
<description>Spring-web MVC配置</description>

<!-- 对所有类进行扫描，以完成Bean创建和自动依赖注入的功能 -->
<context:component-scan base-package="com.HelloWorld">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Service" />
</context:component-scan>

<!-- 当请求应用程序首页时，将执行/hello请求，还可以设定成redirect -->
<mvc:view-controller path="/" view-name="forward:/hello" />

<!-- 这两个类用来启动基于Spring MVC的注解功能，将控制器与方法映射加入到容器中 -->
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

<bean id="viewResolver"
class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
<property name="cache" value="true" />
<property name="prefix" value="" />
<!-- 模板后缀，指定html页面为模板 -->
<property name="suffix" value=".html" />
<!-- 使用这个模板类来解析视图 -->
<property name="viewClass"
value="org.springframework.web.servlet.view.freemarker.FreeMarkerView" />
<property name="exposeSpringMacroHelpers" value="true" />
<!-- 允许访问请求属性，默认为false -->
<property name="exposeRequestAttributes" value="true" />
<!-- 允许访问会话属性，默认为false -->
<property name="exposeSessionAttributes" value="true" />
<!-- 页面上下文，类似于request.contextPath -->
<property name="requestContextAttribute" value="rc" />
<!-- 模板输出内容编码，此处应与defaultEncoding保持一致 -->
<property name="contentType" value="text/html;charset=UTF-8" />
</bean>

<bean id="freemarkerConfig"
class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
<!-- 模板文件所在目录 -->
<property name="templateLoaderPath" value="/pages/" />
<!-- 指定FreeMarker模板文件的编码格式 -->
<property name="defaultEncoding" value="UTF-8" />
<!-- FreeMarker属性配置 -->
<property name="freemarkerSettings">
<props>
<!--
每隔5s检查模板是否更新，单位为秒
如果不经常更新模板可将更新的延迟时间设定长一点
-->
<prop key="template_update_delay">5</prop>

<!-- 指定地区语言环境，我们的语言是中文 -->
<prop key="locale">zh_CN</prop>

</props>
</property>
</bean>

</beans>

mybatis-config.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>
<settings>
<!-- changes from the defaults -->
<setting name="lazyLoadingEnabled" value="false" />
</settings>

<typeAliases>
<typeAlias alias="Stu" type="com.HelloWorld.examples.base.entity.Student" />
</typeAliases>
<mappers>
<mapper resource="mapper/StudentMapper.xml"/>
</mappers>
</configuration>

StudentMapper.xml，SQL语句编写的地方：

<?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="StudentMapper">

<sql id="base_column">
id,name,chinese,math,english
</sql>

<select id="selectByEntity" parameterType="Stu" resultType="Stu">
select
<include refid="base_column" />
from student
</select>

<select id="selectByPrimaryKey" parameterType="int" resultType="Stu">
select
<include refid="base_column" />
from student where id = #{id}
</select>

<insert id="insert" parameterType="Stu">
INSERT INTO student(name,chinese,math,english) VALUES (#{name}, #{chinese},#{math},#{english});
</insert>

<update id="update" parameterType="Stu">
update student
<set>
<if test="name != null">
name = #{name},
chinese =#{chinese},
math =#{math},
english=#{english}
</if>
</set>
where id = #{id}
</update>

<delete id="delete" parameterType="int">
delete from student where id = #{id}
</delete>
</mapper>

MyBatis的Dao基类:

package com.HelloWorld.orm.mybatis;

import java.io.Serializable;
import java.util.List;

import org.mybatis.spring.support.SqlSessionDaoSupport;

/**
* MyBatis的Dao基类
* @author
*/
public class MyBatisDao extends SqlSessionDaoSupport{

public void save(String key, Object object) {
getSqlSession().insert(key, object);
}

public void delete(String key, Serializable id) {
getSqlSession().delete(key, id);
}

public void delete(String key, Object object) {
getSqlSession().delete(key, object);
}

public <T> T get(String key, Object params) {
return (T) getSqlSession().selectOne(key, params);
}

public <T> List<T> getList(String key) {
return getSqlSession().selectList(key);
}

public <T> List<T> getList(String key, Object params) {
return getSqlSession().selectList(key, params);
}
}

entity实体类：

package com.HelloWorld.examples.base.entity;

public class Student {
private Integer id;
private String name;
private float chinese;
private float  math;
private float english;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public float getChinese() {
return chinese;
}
public void setChinese(float chinese) {
this.chinese = chinese;
}
public float getMath() {
return math;
}
public void setMath(float math) {
this.math = math;
}
public float getEnglish() {
return english;
}
public void setEnglish(float english) {
this.english = english;
}

}

Service层

package com.HelloWorld.examples.base.service;

import java.io.Serializable;
import java.util.List;

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

import com.HelloWorld.examples.base.entity.Student;
import com.HelloWorld.orm.mybatis.MyBatisDao;

@Service
public class StudentService {
@Autowired
private MyBatisDao myBatisDao;

public List<Student> getStudent(){
return myBatisDao.getList("StudentMapper.selectByEntity");
}

public Student getStudent(Serializable id){
return myBatisDao.get("StudentMapper.selectByPrimaryKey",id);
}

public void save(Student student){

if(student.getId()==null)
myBatisDao.save("StudentMapper.insert", student);
else
myBatisDao.save("StudentMapper.update",student);
}

public void delete(Serializable id){
myBatisDao.delete("StudentMapper.delete", id);
}
}

controller层：

package com.HelloWorld.examples.base.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.HelloWorld.examples.base.entity.Student;
import com.HelloWorld.examples.base.service.StudentService;

@Controller
@RequestMapping("/student")
public class StudentController {
@Autowired
private StudentService studentService;

@RequestMapping(method = RequestMethod.GET)
public String list(Model model){
model.addAttribute("list", studentService.getStudent());
return "base/student_list";
}

@RequestMapping(value="/new", method = RequestMethod.GET)
public String create(Model model, Student student){
model.addAttribute("entity",student);
return "base/student_new";
}

@RequestMapping(value="/edit/{id}", method = RequestMethod.GET)
public String edit(Model model, @PathVariable Integer id){
model.addAttribute("entity", studentService.getStudent(id));
return "base/student_edit";
}

@RequestMapping(value="/save", method = RequestMethod.POST)
public String save(Model model, Student student){
studentService.save(student);
return "redirect:/student";
}

@RequestMapping(value="/view/{id}", method = RequestMethod.GET)
public String view(Model model, @PathVariable Integer id){
model.addAttribute("entity", studentService.getStudent(id));
return "base/student_view";
}

@RequestMapping(value="/delete/{id}", method = RequestMethod.GET)
public String delete(Model model, @PathVariable Integer id){
studentService.delete(id);
return "redirect:/student";
}
}

执行结果：