使用maven搭建SSH專案(spring+springmvc+Hibernate)
阿新 • • 發佈:2018-12-26
本文介紹使用eclipse+maven搭建Spring+SpringMvc+Hibernate專案,以登陸為例:
1、建立maven專案
2、把maven專案變為動態網站
3、搭建spring+springmvc+Hibernate專案
1 建立maven專案
2 把maven專案變為動態網站
3 開始搭建spring+springmvc+Hibernate專案
3.1 配置maven依賴,在pom.xml寫入如下:
<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/xsd/maven-4.0.0.xsd">
<modelVersion> 4.0.0</modelVersion>
<groupId>com.welljoint</groupId>
<artifactId>testSSH2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding >
<spring.version>4.2.6.RELEASE</spring.version>
</properties>
<dependencies>
<!-- springframework 4 dependencies begin -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- springframework 4 dependencies end -->
<!-- hibernate 配置 begin -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.6.9.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>3.6.9.Final</version>
</dependency>
<!-- hibernate 配置 end -->
<!-- mysql資料庫的驅動包 start -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- 引入jstl包 -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
</dependency>
<!-- 引入servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- 引入資料庫連線池 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>
</dependencies>
</project>
3.2 請檢查maven依賴是否匯入到專案中了
3.3 在src/main/java中新建一個com.welljoint.entity的包;在這個包裡新建一個User.java的bean
package com.welljoint.entity;
/**
* @version
* @time 2018-2-28 下午6:02:03
* @describe:使用者的bean
*/
public class User {
private Integer id;
private String userName;
private String password;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
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;
}
@Override
public String toString() {
return "User [id=" + id + ", userName=" + userName + ", password="
+ password + "]";
}
}
3.4 在WEB-INF目錄下建立一個view資料夾;在該資料夾裡建立一個login.jsp,程式碼如下:
<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登陸</title>
</head>
<body>
<form method="post">
使用者名稱:<input type="text" name="userName"><br>
密碼:<input type="text" name="password"><br>
<input type="submit" value="登陸">
</form>
</body>
</html>
- 再在view資料夾下建立一個login_success.jsp的頁面,程式碼如下:
<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>登陸成功</title>
</head>
<body>
登陸成功
</body>
</html>
3.5 在src/main/java中新建一個com.welljoint.rest的包;在這個包裡新建一個LoginController.java作為控制器
package com.welljoint.rest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.welljoint.entity.User;
/**
* @version
* @time 2018-2-28 下午5:57:07
* @describe:控制器
*/
@Controller //註解為控制器
@RequestMapping(value="/login") //截獲帶有/login的請求
public class LoginController {
@RequestMapping(method=RequestMethod.GET)
public String get(){ //用來返回一個頁面
return "login"; //返回指向login.jsp頁面
}
@RequestMapping(method=RequestMethod.POST)
public String post(User user){ //用來處理使用者的登陸請求
return "login_success";
}
}
3.6 在src/main/resources中新建一個spring-mvc.xml的檔案,程式碼如下:
<?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:p="http://www.springframework.org/schema/p"
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">
<!-- 對web包中的所有類進行掃描,以完成Bean建立和自動依賴注入的功能 -->
<context:component-scan base-package="com.welljoint" />
<!-- 啟用基於註解的配置 @RequestMapping, @ExceptionHandler,資料繫結 ,@NumberFormat ,
@DateTimeFormat ,@Controller ,@Valid ,@RequestBody ,@ResponseBody等 -->
<mvc:annotation-driven />
<!-- 檢視層配置 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--配置JSTL表示式-->
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<!-- 字首 -->
<property name="prefix" value="/WEB-INF/view/"/>
<!-- 字尾 -->
<property name="suffix" value=".jsp"/>
</bean>
<!-- 配置靜態資源 -->
<mvc:resources location="/res/" mapping="/res/**"/>
</beans>
3.7 配置web.xml,程式碼如下:
<?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/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>testSSH2</display-name>
<!-- 請求都交給DispatcherServlet處理 -->
<servlet>
<servlet-name>springmvc</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>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 增加中文亂碼過濾器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 清除jsp空格 -->
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<trim-directive-whitespaces>true</trim-directive-whitespaces>
</jsp-property-group>
</jsp-config>
</web-app>
- 如果你是按照上述一步步做的話,已經可以執行看效果了,效果圖如下:
- 任意輸入點選登陸後,如下圖:
3.8 寫service層:在src/main/java中新建一個com.welljoint.service的包;在這個包裡新建一個LoginService.java作為服務層的介面
package com.welljoint.service;
public interface LoginService {
public int login(String userName,String password);
}
- 再在com.welljoint.service包中新建一個LoginServiceImpl.java作為服務層介面的實現
package com.welljoint.service;
import org.springframework.stereotype.Service;
@Service
public class LoginServiceImpl implements LoginService{
public int login(String userName,String password){
return 1;
}
}
- 此時就可以把service層注入到controller層來發揮作用了,把LoginController.java修改為如下:
package com.welljoint.rest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.welljoint.entity.User;
import com.welljoint.service.LoginService;
/**
* @version
* @time 2018-2-28 下午5:57:07
* @describe:控制器
*/
@Controller //註解為控制器
@RequestMapping(value="/login") //截獲帶有/login的請求
public class LoginController {
@Autowired
LoginService loginService; //注入service層
@RequestMapping(method=RequestMethod.GET)
public String get(){ //用來返回一個頁面
return "login"; //返回指向login.jsp頁面
}
@RequestMapping(method=RequestMethod.POST)
public String post(User user){ //用來處理使用者的登陸請求
if (loginService.login(user.getUserName(), user.getPassword())==1) {
return "login_success"; //登陸成功,跳轉到login_success.jsp頁面
}
return "login";
}
}
- 把專案執行起來,如果效果和之前的一樣,輸入任意值,點選登陸可以跳轉,則證明service層寫正確了,如下:
3.9寫dao層:在src/main/java中新建一個com.welljoint.dao的包;在這個包裡新建一個UserDao.java作為資料層的介面
package com.welljoint.dao;
import com.welljoint.entity.User;
public interface UserDao {
public User find(String userName,String password);
}
- 再在com.welljoint.dao包中新建一個UserDaoImpl.java作為資料層介面的實現
package com.welljoint.dao;
import org.springframework.stereotype.Repository;
import com.welljoint.entity.User;
@Repository
public class UserDaompl implements UserDao{
public User find(String userName,String password){
return new User();//假資料,後期要通過Hibernate去資料庫取
}
}
- 此時就可以把dao層注入到service層來發揮作用了,把LoginServiceImpl.java修改為如下:
package com.welljoint.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.welljoint.dao.UserDao;
@Service
public class LoginServiceImpl implements LoginService{
@Autowired
private UserDao userDao;
public int login(String userName,String password){
return userDao.find(userName, password)==null?0:1;
}
}
- 把專案執行起來,如果效果和之前的一樣,輸入任意值,點選登陸可以跳轉,則證明dao層寫正確了,如下:
3.10 把Hibernate加入到專案中,並且去資料庫查詢資料
對於這一節,是難點,<敲黑板>,3.9節前做的是前奏,都沒有涉及到資料庫操作,關於3.10節,大家可以用Hibernate也可以用Mybatis,這一章我們講Hibernate,我的另一篇文章講Mybatis,也歡迎大家看。
(1)使用mysql,在本地建立一個名為ssh的資料庫(不用建表,表會自動建立的)
- (2)在com.welljoint.entity包中建立User這個bean的對映檔案User.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 package="com.welljoint.entity">
<class name="User" table="user">
<id name="id">
<generator class="native"/>
</id>
<property name="userName" length="32" not-null="true" unique="true"/>
<property name="password" length="64" not-null="true"/>
</class>
</hibernate-mapping>
- (3)在src/main/resources中建立spring.xml檔案,程式碼如下:
<?xml version="1.0" encoding="UTF-8"?>
<beans default-autowire="byName"
xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
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/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<!-- 對web包中的所有類進行掃描,以完成Bean建立和自動依賴注入的功能 -->
<context:component-scan base-package="com.welljoint" />
<!-- 資料來源,BasicDataSource,commons-dbcp -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/ssh?useUnicode=true&characterEncoding=UTF-8" />
<property name="username" value="root" />
</bean>
<!-- Hibernate SesssionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<property name="mappingLocations" value="classpath:/com/welljoint/entity/*.hbm.xml" />
</bean>
<!-- PlatTranscationManager -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
- (4)把spring.xml配置檔案,加入到web.xml中,web.xml程式碼修改為如下(請關注本檔案中新新增的兩部分程式碼):
<?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/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>testSSH2</display-name>
<!-- 配置spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!-- 配置監聽器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 請求都交給DispatcherServlet處理 -->
<servlet>
<servlet-name>springmvc</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>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 增加中文亂碼過濾器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 清除jsp空格 -->
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<trim-directive-whitespaces>true</trim-directive-whitespaces>
</jsp-property-group>
</jsp-config>
</web-app>
- (5)把Hibernate功能新增到dao層中,從而進行資料庫操作,UserDaoImpl.java程式碼修改為如下:
package com.welljoint.dao;
import java.util.List;
import javax.annotation.Resource;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository;
import com.welljoint.entity.User;
@Repository
public class UserDaompl extends HibernateDaoSupport implements UserDao{
//HibernateDaoSupport來操作資料庫更加方便
//用來注入sessionFactory(不注入會報錯)
@Resource(name = "sessionFactory")
public void setSessionFactoryOverride(SessionFactory sessionFactory) {
super.setSessionFactory(sessionFactory);
}
@Override
public User find(String userName,String password){
//注意:以下是HQL語句
List<?> users = getHibernateTemplate().find("from User where userName=? and password=?",userName,password);
return users.size()>0?(User)users.get(0):null;//假資料,後期要通過Hibernate去資料庫取
}
}
- (6)最終專案截圖如下:
- (7)恭喜您,整個SSH專案已經搭建完畢了,快來執行一下吧。啟動專案後,首先檢查eclipse的控制檯有沒有錯誤資訊,有的話請百度。再看到瀏覽器會顯示登陸框,如下:
- (8)此時ssh資料庫已經自動建立了一個user表了,請看:
- (9)我們在上述的user表中,手動填入“11”,“22”,(後期大家自己寫註冊的程式碼,就不用手動填寫了)如下圖:
- (10)回到瀏覽器,我們可以使用剛剛填入到資料庫的值進行登陸了
- 我們填入錯誤的值(填入錯誤的值,仍會跳轉到login.jsp頁面)
- 我們填入錯誤的值(填入錯誤的值,仍會跳轉到login.jsp頁面)
4專案下載地址:
http://download.csdn.net/download/tiandixuanwuliang/10264025