基於SSM框架學生管理系統的實現
阿新 • • 發佈：2018-12-30
這是我一年前做的專案的，算是SSM框架入門的例項，maven管理工具所用到的倉庫私服為阿里雲的倉庫。
整個專案的目錄：
jdbc.properties是對資料庫資訊的配置：
#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" /> <!-- 資料來源配置,使用應用內的DBCP資料庫連線池 --> <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> <!-- 事務管理器配置,單資料來源事務 --> <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> <!-- 對所有類進行掃描，以完成Bean建立和自動依賴注入的功能 --> <context:component-scan base-package="com.HelloWorld"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service" /> </context:component-scan> <!-- 當請求應用程式首頁時，將執行/hello請求，還可以設定成redirect --> <mvc:view-controller path="/" view-name="forward:/hello" /> <!-- 這兩個類用來啟動基於Spring MVC的註解功能，將控制器與方法對映加入到容器中 --> <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="" /> <!-- 模板字尾，指定html頁面為模板 --> <property name="suffix" value=".html" /> <!-- 使用這個模板類來解析檢視 --> <property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView" /> <property name="exposeSpringMacroHelpers" value="true" /> <!-- 允許訪問請求屬性，預設為false --> <property name="exposeRequestAttributes" value="true" /> <!-- 允許訪問會話屬性，預設為false --> <property name="exposeSessionAttributes" value="true" /> <!-- 頁面上下文，類似於request.contextPath --> <property name="requestContextAttribute" value="rc" /> <!-- 模板輸出內容編碼，此處應與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"> <!-- 模板檔案所在目錄 --> <property name="templateLoaderPath" value="/pages/" /> <!-- 指定FreeMarker模板檔案的編碼格式 --> <property name="defaultEncoding" value="UTF-8" /> <!-- FreeMarker屬性配置 --> <property name="freemarkerSettings"> <props> <!-- 每隔5s檢查模板是否更新，單位為秒 如果不經常更新模板可將更新的延遲時間設定長一點 --> <prop key="template_update_delay">5</prop> <!-- 指定地區語言環境，我們的語言是中文 --> <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語句編寫的地方：
<?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基類:
package com.HelloWorld.orm.mybatis;
import java.io.Serializable;
import java.util.List;
import org.mybatis.spring.support.SqlSessionDaoSupport;
/**
* MyBatis的Dao基類
* @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實體類：
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層
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層：
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";
}
}
執行結果：
