SSH整合之入门级例子:简易留言板(完整源码)
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一.环境说明
- ※Windows 10 ver 1703
- ※IDEA 2017 2.5
- ※JDK 1.8
- ※MySQL 5.7
- ※Maven 3.5
二.框架说明
- ※Spring 4.3.11
- ※SpringMVC 4.3.11
- ※Hibernate 5.2.11
- ※Bootstrap 3.3.7
- ※Flat UI 2.3
三.项目说明
利用SSH三大框架,实现一个留言页面,可以展示留言以及添加留言,基于注解.
四.源码
项目结构:
实体类:
Msg.class
package com.cs.qsx.domain;import com.alibaba.fastjson.annotation.JSONField;import javax.persistence.*;import java.util.Date;@Entity@Table(name = "tb_msg")public class Msg { @Id //主键 @GeneratedValue(strategy = GenerationType.IDENTITY) //自增 private Integer id; @Column(length = 10) private String name; @Column(length = 100) private String context; @Column(columnDefinition = "DATE") //指定属性在表中的字段类型 @JSONField(format = "yyyy-MM-dd") //指定json格式化时如何格式化date private Date createDate; public Msg() { } 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 String getContext() { return context; } public void setContext(String context) { this.context = context; } public Date getCreateDate() { return createDate; } public void setCreateDate(Date createDate) { this.createDate = createDate; }}数据库连接配置
dbconfig.properties
jdbc.driverclass=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost:3306/Msg_Test?characterEncoding=UTF-8jdbc.username=rootjdbc.password=123456Spring配置文件
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?><!--Spring的约束文件 使用那些模块就标记那些模块的约束文档 --><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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd "> <!--1、加载外部配置文件 --> <context:property-placeholder location="classpath:dbconfig.properties" /> <context:component-scan base-package="com.cs.qsx.dao"></context:component-scan> <context:component-scan base-package="com.cs.qsx.service"></context:component-scan> <!--2、配置数据库连接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 基本属性 url、user、password --> <property name="driverClassName" value="${jdbc.driverclass}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> <!-- 配置初始化大小、最小、最大 --> <property name="maxActive" value="20" /> <property name="initialSize" value="1" /> <property name="minIdle" value="1" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="testWhileIdle" value="true" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <!-- 打开PSCache，并且指定每个连接上PSCache的大小 --> <property name="poolPreparedStatements" value="true" /> <property name="maxOpenPreparedStatements" value="20" /> </bean> <!-- 3、配置SessionFactory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <!--配置数据库连接池 --> <property name="dataSource" ref="dataSource"></property> <!--Hibernate的设置信息 --> <property name="hibernateProperties"> <props> <!--方言 --> <prop key="hibernate.dialect">org.hibernate.dialect.MySQL57Dialect</prop> <!--显示SQL --> <prop key="hibernate.show_sql">false</prop> <!--格式化sql语句 --> <prop key="hibernate.format_sql">false</prop> <!--ddl自动语句 --> <prop key="hibernate.hbm2ddl.auto">update</prop> <!-- <prop key="hibernate.current_session_context_class">thread</prop> --> <!-- 最好使用Spring中对SessionContext的子类 --> <prop key="hibernate.current_session_context_class">org.springframework.orm.hibernate5.SpringSessionContext </prop> </props> </property> <!--扫描Hibernate注解的实体类包 --> <property name="packagesToScan"> <value>com.cs.qsx.domain</value> </property> </bean> <!--4、配置事务管理对象 --> <bean id="txManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!--配置AOP注解 --> <aop:aspectj-autoproxy></aop:aspectj-autoproxy> <!--设置注解事务的管理对象 --> <tx:annotation-driven transaction-manager="txManager"></tx:annotation-driven></beans>SpringMVC配置文件
springmvc.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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <mvc:annotation-driven> <mvc:message-converters register-defaults="false"> <!--解决@Responcebody中文乱码问题 --> <bean class="org.springframework.http.converter.StringHttpMessageConverter"> <constructor-arg value="UTF-8"></constructor-arg> </bean> <!--配合fastjson支持 --> <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="defaultCharset" value="UTF-8"></property> <property name="supportedMediaTypes"> <list> <value>application/json</value> <value>text/html;charset=UTF-8</value> </list> </property> <property name="fastJsonConfig" ref="fastJsonConfig"></property> </bean> </mvc:message-converters> </mvc:annotation-driven> <!--fastJsonConfig --> <bean id="fastJsonConfig" class="com.alibaba.fastjson.support.config.FastJsonConfig"> <!--默认编码格式 --> <property name="charset" value="UTF-8"></property> <!--默认日期格式化格式 --> <property name="dateFormat" value="yyyy-MM-dd"></property> <property name="serializerFeatures"> <list> <value>WriteNullListAsEmpty</value> </list> </property> </bean> <!--fastjson支持配置结束 --> <!--放行静态资源 --> <mvc:default-servlet-handler></mvc:default-servlet-handler> <!--配置扫描包 --> <context:component-scan base-package="com.cs.qsx.controller"></context:component-scan> <!--视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 上传文件大小上限，单位为字节（10MB） --> <property name="maxUploadSize"> <value>10485760</value> </property> <!-- 请求的编码格式，必须和jSP的pageEncoding属性一致，以便正确读取表单的内容，默认为ISO-8859-1 --> <property name="defaultEncoding"> <value>UTF-8</value> </property> </bean></beans>项目配置文件
web.xml
<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <!--配置Spring --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext*.xml</param-value> </context-param> <!--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>/WEB-INF/springmvc-config.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> <!--配置过滤器,解决post请求乱码 --> <filter> <filter-name>characterEncodingFilter</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> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>Maven依赖
pom.xml
<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.cs.qsx</groupId> <artifactId>SSH_Msg</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>SSH_Msg Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.3.11.RELEASE</version> </dependency> <!-- 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-webmvc</artifactId> <version>4.3.11.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>5.2.11.Final</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/druid --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.3</version> </dependency> <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.44</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api --> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>javax.servlet.jsp-api</artifactId> <version>2.3.1</version> <scope>provided</scope> </dependency> <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.3</version> </dependency> <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.38</version> </dependency> </dependencies> <build> <finalName>SSH_Msg</finalName> <!--提高编译级别 --> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build></project>页面
leaveMessage.jsp
<%-- Created by IntelliJ IDEA. User: 17535 Date: 2017/10/11 Time: 8:31 To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head> <title>留言板</title> <link href="/css/vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet"> <link href="/css/flat-ui.min.css" rel="stylesheet"> <script src="https://cdn.bootcss.com/jquery/3.1.1/jquery.min.js"></script> <script src="/js/flat-ui.min.js"></script><script type="text/javascript"> function getMsg() { var url = "${pageContext.request.contextPath}/api/msg"; $.ajax({ url:url, type:"post", dataType:"json", success:function (result) { var html1 = "<thead><tr><th>留言内容</th><th>留言人</th><th>留言时间</th></tr></thead>"; var innHtml = ""; for (var i=0;i<result.length;i++){ var jsonObject = result[i]; innHtml = innHtml + "<tr><td>"+jsonObject.context+"</td><td>"+jsonObject.name+"</td><td>"+jsonObject.createDate+"</td></tr>"; } $("#msgtable").html(html1 + innHtml); }, error:function () { alert("请求失败"); } }); }</script></head><body onload="getMsg()"><div class="main"> <h2>请输入留言</h2> <div class="addMsg"> <form action="/addMsg" method="post" class="navbar-form navbar-left"> <div class="form-group"> <input class="form-control" type="text" name="context" placeholder="请输入留言" /> <input class="form-control" type="text" name="name" placeholder="请输入姓名" /> <button class="btn btn-primary btn-small" type="submit">留言</button> <button class="btn btn-warning btn-small" type="reset">清空</button> </div> </form> </div> <div class="show"> <table class="table table-bordered table-hover" id="msgtable"> </table> </div></div></body></html>业务逻辑层(接口)
MsgService.class
package com.cs.qsx.service;import com.cs.qsx.domain.Msg;import java.util.List;public interface MsgService { //查询 public List<Msg> findAll(); //新增 public void addMsg(Msg msg);}业务逻辑层(实现类)
MsgServiceImpl.class
package com.cs.qsx.service.impl;import com.cs.qsx.dao.MsgDao;import com.cs.qsx.domain.Msg;import com.cs.qsx.service.MsgService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import java.util.List;@Servicepublic class MsgServiceImpl implements MsgService { @Autowired private MsgDao msgDao; @Override public List<Msg> findAll() { return msgDao.queryAll(); } @Override public void addMsg(Msg msg) { msgDao.insertMsg(msg); }}数据持久层(接口)
MsgDao.class
package com.cs.qsx.dao;import com.cs.qsx.domain.Msg;import java.util.List;public interface MsgDao { //查询 public List<Msg> queryAll(); //新增 public void insertMsg(Msg msg);}数据持久层(实现类)
MsgDaoImpl.class
package com.cs.qsx.dao.impl;import com.cs.qsx.dao.MsgDao;import com.cs.qsx.domain.Msg;import org.hibernate.SessionFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.orm.hibernate5.support.HibernateDaoSupport;import org.springframework.stereotype.Repository;import javax.annotation.PostConstruct;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.List;@Repository("msgDao")public class MsgDaoImpl extends HibernateDaoSupport implements MsgDao { @Autowired private SessionFactory sessionFactory; @PostConstruct protected void injectSessionFactory() { super.setSessionFactory(sessionFactory); } @Override public List<Msg> queryAll() { return (List<Msg>) getHibernateTemplate().find("from Msg"); } @Override public void insertMsg(Msg msg) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date = null; try { date = simpleDateFormat.parse(simpleDateFormat.format(new Date())); } catch (ParseException e) { e.printStackTrace(); } msg.setCreateDate(date); getHibernateTemplate().save(msg); }}控制器
MsgController.class
package com.cs.qsx.controller;import com.cs.qsx.domain.Msg;import com.cs.qsx.service.MsgService;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.ResponseBody;import javax.servlet.http.HttpServletResponse;import java.util.List;@Controllerpublic class MsgController { @Autowired private MsgService msgService; @RequestMapping("/msg") public String showMsg() { return "leaveMessage"; } @ResponseBody @RequestMapping("/api/msg") public List<Msg> msgapi(HttpServletResponse response) { List<Msg> msgs = msgService.findAll(); return msgs; } @RequestMapping("/addMsg") public String addMsg(Msg msg){ msgService.addMsg(msg); return "leaveMessage"; }}过滤器
HibernateFlushFilter.class
package com.cs.qsx.filter;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.springframework.dao.DataAccessResourceFailureException;import org.springframework.orm.hibernate5.support.OpenSessionInViewFilter;import javax.persistence.FlushModeType;import javax.servlet.annotation.WebFilter;/** * Servlet Filter implementation class HibernateFlushFilter * 为了解决Spring二次修改Hibernate的FlushMode * */@WebFilter("/*")public class HibernateFlushFilter extends OpenSessionInViewFilter { @Override protected Session openSession(SessionFactory sessionFactory) throws DataAccessResourceFailureException { // TODO Auto-generated method stub Session session=sessionFactory.openSession(); session.setFlushMode(FlushModeType.AUTO); return session; }}字符过滤器
EncodingFilter.class
package com.cs.qsx.filter;import javax.servlet.*;import javax.servlet.annotation.WebFilter;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletRequestWrapper;import java.io.File;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.Map;@WebFilter(filterName = "EncodeFilter", urlPatterns = "/*")public class EncodeFilter implements Filter { public void destroy() { } public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException { //获取请求 HttpServletRequest request = (HttpServletRequest) req; HttpServletRequest myRequest = new MyRequest(request); //处理响应乱码 resp.setContentType("text/html;charset=utf-8"); //放行 chain.doFilter(myRequest,resp); } //自定义一个请求 class MyRequest extends HttpServletRequestWrapper { private HttpServletRequest request; private boolean hasEncode = false; public MyRequest(HttpServletRequest request) { super(request); this.request = request; } @Override public String getParameter(String s) { //通过自己定义的已经处理过字符编码问题的方法获取map Map<String,String[]> parameterMap = getParameterMap(); //根据map获取值,值是数组 String[] values = parameterMap.get(s); if (values == null){ return null; } //取一个值,这个值就是数组的第0个元素 return values[0]; } @Override public String[] getParameterValues(String s) { Map<String,String[]> parameterMap = getParameterMap(); String[] values = parameterMap.get(s); return values; } //重写getParmeterMap方法,在内部把map中的中文乱码处理掉 @Override public Map<String, String[]> getParameterMap() { //处理中文乱码,区别对待get和post String method = request.getMethod(); if ("post".equalsIgnoreCase(method)) { //处理post乱码 try { request.setCharacterEncoding("utf-8"); return request.getParameterMap(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } else if ("get".equalsIgnoreCase(method)) { //处理get乱码 Map<String, String[]> parameterMap = request.getParameterMap(); //对于每一个内容都要重新编码再解码 /* 说明:tomcat8之前的版本,默认编码格式是iso-8859-1 在8之后,就是utf-8了,所以只需要对Tomcat8之前的版本进行处理即可 */ String servletInfo = request.getServletContext().getServerInfo(); if (!hasEncode) { if (servletInfo.substring(servletInfo.lastIndexOf(File.separator) + 1).charAt(0) < 56) { for (String parameterName : parameterMap.keySet()) { //根据键拿到值,这个值并不确定是几个值 String[] values = parameterMap.get(parameterName); if (values != null) { for (int i = 0; i < values.length; i++) { try { values[i] = new String(values[i].getBytes("ISO-8859-1"), "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } } } hasEncode = true; } } return parameterMap; } return super.getParameterMap(); } } public void init(FilterConfig config) throws ServletException { }}附:
Flat UI 官网:
Flat UI 官网
效果图:
成功的路上,总有坎坷,走过去,迎接你的将是—下一个坎坷.
Lucifer
2017/10/11
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