使用Spring、Struts2、Hibernate三大框架實現使用者增刪改查
阿新 • • 發佈:2019-01-28
這就是SSH框架內容很多,隨著下面一個案例來進入分析:
1 首先專案是依賴maven進行管理的,建立一個動態的web專案
2 在pom.xml匯入相關jar包,配置如下:
<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.wy</groupId> <artifactId>Struct</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>Struct Maven Webapp</name> <url>http://maven.apache.org</url> <!-- Spring版本控制 --> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.version>4.3.11.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-core</artifactId> <version>2.5.2</version> </dependency> <!-- 資料庫 https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp --> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> </dependency> <!-- spring https://mvnrepository.com/artifact/org.springframework/spring-orm --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>4.3.11.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>4.3.11.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.11.RELEASE</version> </dependency> <!-- mysql資料庫的驅動 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.38</version> </dependency> <!-- spring對jdbc的支援包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <!-- hibernate https://mvnrepository.com/artifact/org.hibernate/hibernate-core --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>5.2.10.Final</version> </dependency> <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>5.2.10.Final</version> </dependency> <!-- https://mvnrepository.com/artifact/org.hibernate.common/hibernate-commons-annotations --> <dependency> <groupId>org.hibernate.common</groupId> <artifactId>hibernate-commons-annotations</artifactId> <version>5.0.1.Final</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.struts/struts2-spring-plugin --> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-spring-plugin</artifactId> <version>2.5.12</version> </dependency> <!-- servlet 包,上線後不要,因為 tomcat的lib中自帶有, 所以要配置 scope為provided --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <!-- spring容器 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> </dependencies> <build> <finalName>Struct</finalName> </build> </project>
3 建立簡單Student類,一般在開發中javabean放置在entity下,如com.yc.entity;持久層放在dao ,如com.yc.dao,業務層放在service,如com.yc.service ,控制層放置在controller,Student類如下(本案例的增刪改查是對Student):
package com.yc.entity; public class Student { public int id ; public String name; public String pwd; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } @Override public String toString() { return "Student [id=" + id + ", name=" + name + ", pwd=" + pwd + "]"; } }
Student在資料庫對應表示student:
create table student(
id int primary key auto_increment,
name varchar(20),
pwd varchar(50)
)
4 建立對映檔案,一般命名規則是類名.hbm.xml,因此對映檔案為Student.hbm.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping> <class name="com.yc.entity.Student" table="student"> <id name="id" type="java.lang.Integer"> <column name="id"/> <generator class="native"/> </id> <property name="name" type="java.lang.String"> <column name="name" /> </property> <property name="pwd" type="java.lang.String"> <column name="pwd" /> </property> </class> </hibernate-mapping>
5 編寫dao層介面,StudentDao:
package com.yc.dao;
import com.yc.entity.Student;
public interface StudentDao {
//登入
public int login(Student student);
//註冊
public int add(Student student);
//修改
public int update(Student student);
//登出
public int del(Student student);
}
6 實現Dao層介面,StudentDaoImpl:
package com.yc.dao.Impl;
import java.util.List;
import javax.annotation.Resource;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.stereotype.Service;
import com.yc.dao.StudentDao;
import com.yc.entity.Student;
@Service
public class StudentDaoImpl implements StudentDao {
@Resource(name="sessionFactory")
public SessionFactory sessionFactory;
@Override
public int login(Student student) {//登入操作
Session session=sessionFactory.getCurrentSession();
Query query=session.createQuery("from Student where name= ? and pwd= ?");
query.setParameter(0,student.getName());//注入引數
query.setParameter(1,student.getPwd());
List<Student> list=query.list();
System.out.println(list);
if(list.size()>0&&list.get(0)!=null){
return 1; //返回1為成功
}
return 0; //返回0為失敗
}
@Override
public int add(Student student) { //註冊操作
try {
Session session=sessionFactory.getCurrentSession();
Query query=session.createSQLQuery("insert into (name,pwd) student values(?,?)").addEntity(Student.class);
query.setString(0,student.getName());
query.setString(1, student.getPwd());
session.save(student);
return 1;
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return 0;
}
}
@Override
public int update(Student student) { //修改操作
try {
Session session=sessionFactory.getCurrentSession();
Transaction transAction=session.beginTransaction();
Query query=session.createSQLQuery("update student set pwd=? where name=? ").addEntity(Student.class);
query.setString(0,student.getPwd());
query.setString(1, student.getName());
query.executeUpdate();
transAction.commit();
return 1;
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return 0;
}
}
@Override
public int del(Student student) { //登出使用者
try {
Session session=sessionFactory.getCurrentSession();
Transaction transAction=session.beginTransaction();
Query query=session.createSQLQuery("delete from student where name=?").addEntity(Student.class);
query.setString(0,student.getName());
query.executeUpdate();
transAction.commit();
return 1;
} catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return 0;
}
}
}
7 編寫業務層藉口,StudentService:
package com.yc.service;
import com.yc.entity.Student;
public interface StudentService {
//登入
public int login(Student student);
//註冊
public int add(Student student);
//修改
public int update(Student student);
//登出
public int del(Student student);
}
8 實現業務層介面,StudentServiceImpl:
package com.yc.service.Impl;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.yc.dao.StudentDao;
import com.yc.entity.Student;
import com.yc.service.StudentService;
@Service
public class StudentServiceImpl implements StudentService {
@Resource(name="studentDaoImpl")
public StudentDao studentDao;
@Override
public int login(Student student) {
return studentDao.login(student);
}
@Override
public int add(Student student) {
return studentDao.add(student);
}
@Override
public int update(Student student) {
return studentDao.update(student);
}
@Override
public int del(Student student) {
return studentDao.del(student);
}
}
9 編寫action類,用於客戶端請求處理:本案例實現對Student物件的增刪改查,所以編寫了四個Action類:LoginAction、AddAction、UpdateAction、DelAction分別實現登入、註冊、修改使用者密碼、登出使用者操作:
LoginAction控制類:
package com.yc.controller;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.yc.entity.Student;
import com.yc.service.StudentService;
@Controller
public class LoginAction extends ActionSupport{
private static final long serialVersionUID = 3867837111230648465L;
private String name;
private String pwd;
private Student student;
@Resource(name="studentServiceImpl")
private StudentService studentService;
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String login(){
Student student=new Student();
student.setName(name);
student.setPwd(pwd);
int result= studentService.login(student);
if(result==1){
ActionContext text=ActionContext.getContext();
text.getSession().put("user",student.getName());
return "success";
}else{
return "error";
}
}
}
AddAction控制類:
package com.yc.controller;
import javax.annotation.Resource;
import org.springframework.stereotype.Controller;
import com.opensymphony.xwork2.ActionSupport;
import com.yc.entity.Student;
import com.yc.service.StudentService;
@Controller
public class AddAction extends ActionSupport {
private static final long serialVersionUID = 5805525553867263305L;
private Student student;
private String name;
private String pwd;
@Resource(name="studentServiceImpl")
private StudentService studentService;
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String add(){
Student student=new Student();
student.setName(name);
student.setPwd(pwd);
int result=studentService.add(student);
if(result==1){
return "success";
}else{
return "error";
}
}
}
UpdateAction控制類:
package com.yc.controller;
import javax.annotation.Resource;
import com.opensymphony.xwork2.ActionSupport;
import com.yc.entity.Student;
import com.yc.service.StudentService;
public class UpdateAction extends ActionSupport {
private static final long serialVersionUID = 5758012919993220108L;
private String name;
private String pwd;
private Student student;
@Resource(name="studentServiceImpl")
private StudentService studentService;
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String update(){
Student student=new Student();
student.setName(name);
student.setPwd(pwd);
int result= studentService.update(student);
if(result==1){
return "success";
}else{
return "error";
}
}
}
DelAction控制類:
package com.yc.controller;
import javax.annotation.Resource;
import com.opensymphony.xwork2.ActionSupport;
import com.yc.entity.Student;
import com.yc.service.StudentService;
public class DelAction extends ActionSupport {
private static final long serialVersionUID = -3188134023173913520L;
private String name;
private String pwd;
private Student student;
@Resource(name="studentServiceImpl")
private StudentService studentService;
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String del(){
Student student=new Student();
student.setName(name);
student.setPwd(pwd);
int result= studentService.del(student);
if(result==1){
return "success";
}else{
return "error";
}
}
}
10 接下來就是編寫struts的配置檔案,將請求交個相應的控制類,struts.xml配置檔案如下:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<constant name="struts.devMode" value="true">
</constant>
<package name="student" extends="struts-default" namespace="/">
<!--action中的name屬性,就是攔截的請求物件 method是處理請求的方法-->
<action name="login" class="com.yc.controller.LoginAction" method="login">
<result name="success">/success.jsp</result>
<result name="error">/error.jsp</result>
</action>
<action name="add" class="com.yc.controller.AddAction" method="add">
<result name="success">/index.jsp</result>
<result name="error">/register.jsp</result>
</action>
<action name="update" class="com.yc.controller.UpdateAction" method="update">
<result name="success">/index.jsp</result>
</action>
<action name="del" class="com.yc.controller.DelAction" method="del">
<result name="success">/index.jsp</result>
</action>
</package>
</struts>
11 配置web.xml檔案:
<?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"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<display-name>Archetype Created Web Application</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- tomcat開啟時,載入Spring配置檔案 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 延遲載入的過濾 ,必須設定在前端控制器之前 -->
<!-- 能保持物件在使用前session為開啟狀態 -->
<filter>
<filter-name>OpenSessionView</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>flushMode</param-name>
<param-value>AUTO</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>OpenSessionView</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置Struts前端控制器 -->
<filter>
<filter-name>Struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
12 配置applicationContext.xml檔案:
<?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:util="http://www.springframework.org/schema/util" xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd"
default-lazy-init="true">
<!-- 資料來源的配置 -->
<bean id="ds" class="org.apache.commons.dbcp.BasicDataSource">
<property name="url" value="jdbc:mysql://localhost:3306/test"></property>
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="username" value="root"></property>
<property name="password" value="a"></property>
</bean>
<!-- sessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="ds">
</property>
<!-- hibernate配置資訊 -->
<property name="hibernateProperties">
<props>
<!-- -->
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.formate_sql">false</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/yc/entity/Student.hbm.xml</value>
</list>
</property>
</bean>
<!--包掃描-->
<context:component-scan base-package="com"></context:component-scan>
<mvc:annotation-driven></mvc:annotation-driven>
</beans>
13 前端介面有index.jsp、register.jsp、update.jsp、del.jsp、error.jsp、success.jsp分別是登入介面、註冊介面、修改密碼介面、登出介面、錯誤介面、登入成功介面
index.jsp登入介面:
<%@ 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>
<title>登入</title>
</head>
<body>
<center>
<form action="login" method="post">
姓名:<input type="text" name="name"/></br></br></br>
密碼:<input type="text" name="pwd"/></br></br></br>
<input type="submit" value="登入" /> <a href="register.jsp" >註冊</a>
</form>
</center>
</body>
</html>
register.jsp註冊介面:
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" >
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<center>
<form action="add" method="post">
姓名:<input type="text" name="name"/></br></br></br>
密碼:<input type="text" name="pwd"/></br></br></br>
<input type="submit" value="立即註冊" />
</form>
</center>
</body>
</html>
update.jsp修改使用者密碼介面:
<%@ 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>
<title>修改密碼</title>
</head>
<body>
<center>
<h2>修改密碼!</h2>
<form action="update" method="post">
<input type=hidden name="name" value='<%=request.getSession().getAttribute("user")%>'>
新密碼:<input type="password" name="pwd"> <br/> <br/>
<input type="submit" value="確認修改">
</form>
</center>
</body>
</html>
del.jsp登出介面:
<%@ 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>
<title>登出使用者</title>
</head>
<body>
<center>
<h2>確定要登出嗎?</h2>
<!-- 登出即刪除使用者所有資料 -->
<form action="del" method="post">
<input type="hidden" name="name" value="<%=request.getSession().getAttribute("user")%>">
<input type="submit" value="確認">
</form>
<br/>
</center>
</body>
</html>
error.jsp錯誤介面:
<%@ 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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<h1>錯誤頁面</h1>
</body>
</html>
success.jsp登入成功介面:
<%@ 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>
<title>Insert title here</title>
</head>
<body>
<center>
<h1>歡迎你, <%=request.getSession().getAttribute("user")%></h1>
<a href="update.jsp">修改密碼</a> <a href="del.jsp">登出</a>
</center>
</body>
</html>