SpringMVC+Hibernate+Spring整合例項(一)
阿新 • • 發佈:2019-02-11
SpringMVC又一個漂亮的web框架,他與Struts2並駕齊驅,Struts出世早而佔據了一定優勢,我在部落格《整合例項》中做了一個簡單的例項,介紹了SSH1的基本搭建方式,Struts2是根據Struts1發展而來,部落格中就沒有貼SSH2的例子,只對比了下Struts1和Struts2異同,通過對比,SSH2的搭建基本不在話下了。下面同樣做一個簡單的應用例項,介紹SpringMVC的基本用法,接下來的部落格也將梳理一下Struts2和SpringMVC的一些異同,通過梳理和舊知識的聯絡,讓學習的成本變低,花很短的時間就可以瞭解一門貌似新的技術,其實本質沒變。
下面開始例項,這個例項的需求是對使用者資訊進行增刪改查。首先建立一個
建立一個User實體類,放在Entity包下,採用註解的方式:
package com.tgb.entity; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.Table; import org.hibernate.annotations.GenericGenerator; @Entity @Table(name="T_USER") public class User { @Id @GeneratedValue(generator="system-uuid") @GenericGenerator(name = "system-uuid",strategy="uuid") @Column(length=32) private String id; @Column(length=32) private String userName; @Column(length=32) private String age; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } }
本篇關於SpringMVC基本都會採用註解的方式,首先配置好資料來源以及事務spring-common.xml,放在config.spring包下:
<?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: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.xsd"> <!-- 配置資料來源 --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" > <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost/test_ssh"></property> <property name="username" value="root"></property> <property name="password" value="1"></property> </bean> <!-- 配置SessionFactory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> </props> </property> <property name="annotatedClasses"> <list> <value>com.tgb.entity.User</value> </list> </property> </bean> <!-- 配置一個事務管理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <!-- 配置事務,使用代理的方式 --> <bean id="transactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true"> <property name="transactionManager" ref="transactionManager"></property> <property name="transactionAttributes"> <props> <prop key="add*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="modify*">PROPAGATION_REQUIRED,-myException</prop> <prop key="del*">PROPAGATION_REQUIRED</prop> <prop key="*">PROPAGATION_REQUIRED</prop> </props> </property> </bean> </beans>
然後配置關於SpringMVC的內容,下面配置中都有註釋說明,就不再贅述,spring-mvc.xml放在config.spring包下:
<?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: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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<!-- 註解掃描包 -->
<context:component-scan base-package="com.tgb" />
<!-- 開啟註解 -->
<mvc:annotation-driven />
<!-- 靜態資源(js/image)的訪問 -->
<mvc:resources location="/js/" mapping="/js/**"/>
<!-- 定義檢視解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
完成這些共用的配置之後,來配置web專案起點web.xml:
<?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_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>json_test</display-name>
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<!-- 載入所有的配置檔案 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/spring/spring-*.xml</param-value>
</context-param>
<!-- 配置Spring監聽 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置SpringMVC -->
<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*:config/spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 配置字符集 -->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 配置Session -->
<filter>
<filter-name>openSession</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>openSession</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
讀者需自行下載jquery包,放到webContent資料夾下的js包下。然後建立幾個測試頁面,分別如下:
Login.jsp,專案的入口介面。
<h5><a href="/test_ssh/user/getAllUser">進入使用者管理頁</a></h5>
Index.jsp,使用者管理的主介面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript" src="../js/jquery-1.7.1.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
function del(id){
$.get("/test_ssh/user/delUser?id=" + id,function(data){
if("success" == data.result){
alert("刪除成功");
window.location.reload();
}else{
alert("刪除失敗");
}
});
}
</script>
</head>
<body>
<h6><a href="/test_ssh/user/toAddUser">新增使用者</a></h6>
<table border="1">
<tbody>
<tr>
<th>姓名</th>
<th>年齡</th>
<th>操作</th>
</tr>
<c:if test="${!empty userList }">
<c:forEach items="${userList }" var="user">
<tr>
<td>${user.userName }</td>
<td>${user.age }</td>
<td>
<a href="/test_ssh/user/getUser?id=${user.id }">編輯</a>
<a href="javascript:del('${user.id }')">刪除</a>
</td>
</tr>
</c:forEach>
</c:if>
</tbody>
</table>
</body>
</html>
addUser.jsp,新增使用者介面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
function addUser(){
var form = document.forms[0];
form.action = "/test_ssh/user/addUser";
form.method="post";
form.submit();
}
</script>
</head>
<body>
<h1>新增使用者</h1>
<form action="" name="userForm">
姓名:<input type="text" name="userName">
年齡:<input type="text" name="age">
<input type="button" value="新增" onclick="addUser()">
</form>
</body>
</html>
editUser.jsp,修改使用者資訊介面。
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript" src="../js/jquery-1.7.1.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>編輯使用者</h1>
<form action="/test_ssh/user/updateUser" name="userForm" method="post">
<input type="hidden" name="id" value="${user.id }">
姓名:<input type="text" name="userName" value="${user.userName }">
年齡:<input type="text" name="age" value="${user.age }">
<input type="submit" value="編輯" >
</form>
</body>
</html>
還有success.jsp和error.jsp頁面,無程式碼,就不再展示。
框架越來越多,越來越好用,但隨之而來的繁雜的、各成體系的配置怎麼辦?專案大了感覺註解靠譜些。
下篇繼續。