Hibernate+SpringMVC+Spring+分頁實現留言管理專案
阿新 • • 發佈：2019-01-02
專案結構：
這裡使用到了Mysql資料庫
所用到的包：略。
首先進行springmvc.xml的配置,注意資料庫密碼要改為自己的。
<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"
xmlns:aop 配置spring-servlet.xml
<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"
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-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
<context:annotation-config/>
<!-- 把標記了@Controller註解 的類轉換為bean -->
<context:component-scan base-package="com.controller"></context:component-scan>
<!-- 啟動SpringMvc的註解功能，完成請求和註解POJO的對映 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"></bean>
<!-- 對檢視名稱的解析，即在模型檢視名稱新增前後綴 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 配置jsp路徑的字首 -->
<property name="prefix" value="/WEB-INF/views/"/>
<!-- 配置jsp路徑的字尾 -->
<property name="suffix" value=".jsp"/>
</bean>
</beans>在web.xml中配置spring容器和servlet
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name>s3h3</display-name>
<!-- 配置Spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:com/springmvc/springmvc.xml</param-value>
</context-param>
<!-- 監聽器的配置 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置Servlet -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:com/spring/spring-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<!-- 這裡在配成spring,下邊也要寫一個名為spring-servlet.xml的檔案，主要用來配置它的controller -->
<servlet-name>spring</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
<!-- post亂碼過慮器 -->
<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>message.action</welcome-file>
</welcome-file-list>
</web-app>
實體類StudentMessage:這裡實現了Hibernate的類對映到表。需要匯入相應的包。
package com.po;
import java.io.Serializable;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="studentmessages")
public class StudentMessage implements Serializable {
private static final long serialVersionUID = 1L;
private int id;
private String title;
private String content;
private String name;
private String phone;
@Id
@Basic(optional=false)
@Column(name="Id")
@GeneratedValue(strategy=GenerationType.IDENTITY)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Column(name="Title")
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
@Column(name="Content")
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
@Column(name="Name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Column(name="Phone")
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
}
Page類：用於實現分頁查詢
package com.po;
import java.util.List;
public class Page {
// 結果集
private List<StudentMessage> list;
// 查詢記錄總數
private int totalRecords;
// 每頁多少條記錄
private int pageSize;
// 第幾頁
private int pageNo;
/**
* @return 總頁數
* */
public int getTotalPages(){
return (totalRecords+pageSize-1)/pageSize;
}
/**
* 計算當前頁開始記錄
* @param pageSize 每頁記錄數
* @param currentPage 當前第幾頁
* @return 當前頁開始記錄號
*/
public int countOffset(int currentPage,int pageSize){
int offset = pageSize*(currentPage-1);
return offset;
}
/**
* @return 首頁
* */
public int getTopPageNo(){
return 1;
}
/**
* @return 上一頁
* */
public int getPreviousPageNo(){
if(pageNo<=1){
return 1;
}
return pageNo-1;
}
/**
* @return 下一頁
* */
public int getNextPageNo(){
if(pageNo>=getBottomPageNo()){
return getBottomPageNo();
}
return pageNo+1;
}
/**
* @return 尾頁
* */
public int getBottomPageNo(){
return getTotalPages();
}
public List<StudentMessage> getList() {
return list;
}
public void setList(List<StudentMessage> list) {
this.list = list;
}
public int getTotalRecords() {
return totalRecords;
}
public void setTotalRecords(int totalRecords) {
this.totalRecords = totalRecords;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getPageNo() {
return pageNo;
}
public void setPageNo(int pageNo) {
this.pageNo = pageNo;
}
}DAO層程式碼實現：
package com.dao;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.po.StudentMessage;
//採用註解寫，在配置檔案中不用再寫Dao層的bean
@Repository("studentMessageDao")
public class StudentMessageDao{
@Autowired
private SessionFactory sessionFactory;
/**
* 分頁查詢
* @param hql 查詢的條件
* @param offset 開始記錄
* @param length 一次查詢幾條記錄
* @return 返回查詢記錄集合
*/
@SuppressWarnings("unchecked")
public List<StudentMessage> queryForPage(int offset, int length) {
//查詢所有的記錄數
Query query= (Query) sessionFactory.getCurrentSession().createQuery("from StudentMessage");
query.setFirstResult(offset);
query.setMaxResults(length);
return query.list();
}
public void save(StudentMessage st){
sessionFactory.getCurrentSession().save(st);
}
public void update(StudentMessage st) {
sessionFactory.getCurrentSession().update(st);
}
public void delete(StudentMessage st) {
sessionFactory.getCurrentSession().delete(st);
}
//查詢記錄總數
public int getAllRowCount(){
int count=((Long) sessionFactory.getCurrentSession()
.createQuery( "select count(*) from StudentMessage").iterate().next()).intValue();
return count;
}
//根據id查詢記錄
public StudentMessage QueryById(int id) {
StudentMessage st =(StudentMessage) sessionFactory.getCurrentSession().get(StudentMessage.class, id);
return st;
}
}
Service層呼叫相應的方法：
package com.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.dao.StudentMessageDao;
import com.po.Page;
import com.po.StudentMessage;
@Repository("studentMessageService")
@Transactional
public class StudentMessageService {
@Autowired
public StudentMessageDao studentMessagedao;
/**
* 分頁查詢
* @param currentPage 當前頁號：現在顯示的頁數
* @param pageSize 每頁顯示的記錄條數
* @return 封閉了分頁資訊(包括記錄集list)的Bean
* */
public Page queryForPage(int currentPage,int pageSize) {
Page page = new Page();
//總記錄數
int allRow = studentMessagedao.getAllRowCount();
//當前頁開始記錄
int offset = page.countOffset(currentPage,pageSize);
//分頁查詢結果集
List<StudentMessage> list = studentMessagedao.queryForPage(offset, pageSize);
page.setPageNo(currentPage);
page.setPageSize(pageSize);
page.setTotalRecords(allRow);
page.setList(list);
return page;
}
public void Servicesave(StudentMessage st){
studentMessagedao.save(st);
}
public void Serviceupdate(StudentMessage st){
studentMessagedao.update(st);
}
public void Servicedelete(StudentMessage st){
studentMessagedao.delete(st);
}
public int ServicegetCount(){
return studentMessagedao.getAllRowCount();
}
public StudentMessage QueryById(int id){
return studentMessagedao.QueryById(id);
}
}Controller層實現:
package com.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import com.po.Page;
import com.po.StudentMessage;
import com.service.StudentMessageService;
@Controller
@RequestMapping("/message.action")
public class StudentMessageController {
@Autowired
public StudentMessageService studentMessageService;
public StudentMessageController(){}
protected final transient Log log = LogFactory.getLog(StudentMessageController.class);
@RequestMapping
//找到所有的記錄並實現了分頁
public String findAll(HttpServletRequest request,HttpServletResponse response,ModelMap modelMap) {
String pageNo = request.getParameter("pageNo");
if (pageNo == null) {
pageNo = "1";
}
Page page = studentMessageService.queryForPage(Integer.valueOf(pageNo), 5);
request.setAttribute("page", page);
List<StudentMessage> list = page.getList();
modelMap.put("list", list);
return "message";
}
//新增留言資訊
@RequestMapping(params = "method=add")
public String add(HttpServletRequest request, ModelMap modelMap) throws Exception{
return "student_add";
}
//儲存留言資訊
@RequestMapping(params = "method=save")
public String save(HttpServletRequest request, ModelMap modelMap){
StudentMessage st = new StudentMessage();
String name = request.getParameter("name");
String title=request.getParameter("title");
String phone=request.getParameter("phone");
String content=request.getParameter("content");
st.setName(name);
st.setPhone(phone);
st.setTitle(title);
st.setContent(content);
try{
studentMessageService.Servicesave(st);
modelMap.put("addstate", "新增成功");
}
catch(Exception e){
e.printStackTrace();
log.error(e.getMessage());
modelMap.put("addstate", "新增失敗");
}
return "student_add";
}
//刪除留言資訊
@RequestMapping(params = "method=del")
public String del(@RequestParam("id") String id) throws Exception{
StudentMessage st=new StudentMessage();
st.setId(Integer.valueOf(id));
studentMessageService.Servicedelete(st);
return "success";
}
//修改留言資訊獲得原來的留言資訊並跳轉頁面
@RequestMapping(params = "method=edit")
public ModelAndView edit(@RequestParam("id") String id,HttpServletRequest request) throws Exception{
ModelAndView modelAndView = new ModelAndView();
int idd=Integer.valueOf(id);
StudentMessage st=studentMessageService.QueryById(idd);
String name=st.getName();
String phone=st.getPhone();
String content=st.getContent();
String title=st.getTitle();
request.setAttribute("id", id);
request.setAttribute("name", name);
request.setAttribute("phone", phone);
request.setAttribute("content", content);
request.setAttribute("title", title);
modelAndView.setViewName("/edit");
return modelAndView;
}
//修改留言資訊確認提交
@RequestMapping(params = "method=editsubmit")
public String editsubmit(HttpServletRequest request) throws Exception{
String name=request.getParameter("name");
String phone=request.getParameter("phone");
String title=request.getParameter("title");
String content=request.getParameter("content");
String id=request.getParameter("id");
StudentMessage st=new StudentMessage();
st.setId(Integer.valueOf(id));
st.setName(name);
st.setPhone(phone);
st.setTitle(title);
st.setContent(content);
studentMessageService.Serviceupdate(st);
return "success";
}
}
JSP頁面實現：
顯示資料頁面：message.jsp:
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>操作</title>
<style>
table{ border-collapse:collapse; }
td{ border:2px solid blue; }
</style>
<script type="text/javascript">
function add(){
window.location.href="<%=request.getContextPath() %>/message.action?method=add";
}
function del(id){
window.location.href="<%=request.getContextPath()%>/message.action?method=del&id=" + id;
}
function edit(id){
url="<%=request.getContextPath()%>/message.action?method=edit&id=" + id;
window.location.href=url;
}
</script>
</head>
<body>
<center>
<h1>留言資訊列表</h1>
<form name="form">
<table >
<tr>
<td>Id</td>
<td>Name</td>
<td>Title</td>
<td>phone</td>
<td>content</td>
<td>do</td>
</tr>
<c:forEach items="${list }" var="studentMessage" varStatus="status">
<tr id="<c:out value="${studentMessage.id}"/>">
<td><input value="${studentMessage.id}" readonly="readonly"/></td>
<td><input name="list[${status.index}].name" value="${studentMessage.name}" readonly="readonly"/></td>
<td><input name="list[${status.index}].title" value="${studentMessage.title}" readonly="readonly"/></td>
<td><input name="list[${status.index}].phone" value="${studentMessage.phone}" readonly="readonly"/></td>
<td><input name="list[${status.index}].content" value="${studentMessage.content}" readonly="readonly"/></td>
<td>
<input type="button" onclick="edit('<c:out value="${studentMessage.id}"/>')" value="修改"/>
<input type="button" onclick="del('<c:out value="${studentMessage.id}"/>')" value="刪除"/>
</td>
</tr>
</c:forEach>
</table>
</form>
<br>
<table>
<tr>
<td colspan="6" align="center" bgcolor="#5BA8DE">共${page.totalRecords}條記錄 共${page.totalPages}頁 當前第${page.pageNo}頁<br>
<a href="<%=request.getContextPath()%>/message.action?pageNo=${page.topPageNo}"><input type="button" name="fristPage" value="首頁" /></a>
<c:choose>
<c:when test="${page.pageNo!=1}">
<a href="<%=request.getContextPath()%>/message.action?pageNo=${page.previousPageNo }"><input type="button" name="previousPage" value="上一頁" /></a>
</c:when>
<c:otherwise>
<input type="button" disabled="disabled" name="previousPage" value="上一頁" />
</c:otherwise>
</c:choose>
<c:choose>
<c:when test="${page.pageNo != page.totalPages}">
<a href="<%=request.getContextPath()%>/message.action?pageNo=${page.nextPageNo }"><input type="button" name="nextPage" value="下一頁" /></a>
</c:when>
<c:otherwise>
<input type="button" disabled="disabled" name="nextPage" value="下一頁" />
</c:otherwise>
</c:choose>
<a href="<%=request.getContextPath()%>/message.action?pageNo=${page.bottomPageNo}"><input type="button" name="lastPage" value="尾頁" /></a>
</td>
</tr>
</table>
<br>
新增記錄：<input id="add" type="button" onclick="add()" value="新增"/>
</center>
</body>
</html> 修改資料頁面：edit.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<style>
table{ border-collapse:collapse; }
td{ border:2px solid blue; }
</style>
</head>
<