springmvc 孔浩 hibernate code
model--User
package model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
@Entity
@Table(name="t_user")
public class User {
private int id;
private String username;
private String password;
private String nickname;
private String email;
@GeneratedValue
@Id
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@NotEmpty(message="用户名不能为空")
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@NotEmpty(message="用户密码不能为空")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getNickname() {
return nickname;
}
public void setNickname(String nickname) {
this.nickname = nickname;
}
@Email(message="邮件格式不正确")
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
注：添加@Entity, @Table, @GeneratedValue, @Id, 各种验证。
问题：有时候需要加construct，有时不需要。
model--UserException
extends RuntimeException
default serial ID
右键 source generate constructors form superclass
model--Pager
public class Pager<T> 类名后加<T>，表示任何数据都可以
model--IUserDao
package user.dao; import java.util.List; import org.springframework.stereotype.Repository; import user.model.Pager; import user.model.User;
@Repository("UserDao") public interface IUserDao { public void add(User user); public void update(User user); public void delete(User user); public User load(int id); public User loadByUsername(String username); public List<User> list(); public Pager<User> find(); }
model--UserDao
implements IUserDao
extends HibernateDaoSupport
package user.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 user.model.Pager; import user.model.User;
//将dao类声明为bean @Repository("UserDao") public class UserDao extends HibernateDaoSupport implements IUserDao { @Resource public void setSuperSessionFactory(SessionFactory sessionFactory){ this.setSessionFactory(sessionFactory); } @Override public void add(User user) { // TODO Auto-generated method stub this.getHibernateTemplate().save(user); } @Override public void update(User user) { // TODO Auto-generated method stub this.getHibernateTemplate().update(user); } @Override public void delete(User user) { // TODO Auto-generated method stub this.getHibernateTemplate().delete(user); } @Override public User load(int id) { // TODO Auto-generated method stub return this.getHibernateTemplate().load(User.class, id); } @Override public User loadByUsername(String username) { // TODO Auto-generated method stub return (User)this.getSession().createQuery("form User where username=?").setParameter(0, username).uniqueResult(); } @Override public List<User> list() { // TODO Auto-generated method stub return this.getSession().createQuery("form User").list(); } @Override public Pager<User> find() { // TODO Auto-generated method stub return null; } }
实现类中加@Repository("UserDao")
hibernate常用的查询方法
return this.getHibernateTemplate().save(user); //update,delete
return this.getHibernateTemplate().load(User.class, id);
return (User)this.getSession().createQuery("form User where username=?").setParameter(0, username).uniqueResult();
return this.getSession().createQuery("form User").list();
model-IUserService
package user.service;
import java.util.List;
import user.model.Pager;
import user.model.User;
public interface IUserService {
public void add(User user);
public void update(User user);
public void delete(User user);
public User load(int id);
public List<User> list();
public Pager<User> find();
public User login(String username, String password);
}
model--UserService
添加@Service("UserService")
注入IUserDao
package user.service;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import user.dao.IUserDao;
import user.model.Pager;
import user.model.User;
import user.model.UserException;
@Service("UserService")
public class UserService implements IUserService {
//注入IUserDao
private IUserDao userDao;
public IUserDao getUserDao() {
return userDao;
}
@Resource
public void setUserDao(IUserDao userDao) {
this.userDao = userDao;
}
@Override
public void add(User user) {
User u = userDao.loadByUsername(user.getUsername());
if(u!=null) throw new UserException("要添加的用户已存在");
userDao.add(user);
}
@Override
public void update(User user) {
userDao.update(user);
}
@Override
public void delete(User user) {
userDao.delete(user);
}
@Override
public User load(int id) {
return userDao.load(id);
}
@Override
public List<User> list() {
return userDao.list();
}
@Override
public Pager<User> find() {
return userDao.find();
}
@Override
public User login(String username, String password) {
User u = userDao.loadByUsername(username);
if(u == null) throw new UserException("用户名不存在");
if(!u.getPassword().equals(password)) throw new UserException("登陆密码不正确");
return u;
}
}
service常用的方法
会注入IUserDao，如果dao和service的方法名相同，直接userDao.add(); //update, delete, load, list, find
User u = userDao.loadByUsername(username);
if(u == null) throw new UserException("用户名不存在");
if(!u.getPassword().equals(password)) throw new UserException("登陆密码不正确");
web--UserController：应该很熟悉了
注入IUserService
model--SystemContext：不知道参数表示什么意思
package user.model;
public class SystemContext {
private static ThreadLocal<Integer> offset = new ThreadLocal<Integer>();
private static ThreadLocal<Integer> size = new ThreadLocal<Integer>();
public static Integer getOffset() {
return offset.get();
}
public static void setOffset(Integer _offset) {
offset.set(_offset);
}
public static void removeOffset(){
offset.remove();
}
public static Integer getSize() {
return size.get();
}
public static void setSize(Integer _size) {
size.set(_size);
}
public static void removeSize(){
size.remove();
}
}
web--SystemContextFilter
implements Filter(javax servlet)
package user.web;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import user.model.SystemContext;
public class SystemContextFilter implements Filter {
@Override
public void destroy() {
// TODO Auto-generated method stub
}
@Override
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain) throws IOException, ServletException {
int offset = 0;
try{
offset = Integer.parseInt(req.getParameter("pager.offset"));
}catch(NumberFormatException e){
}
try{
//获取这两个参数
SystemContext.setOffset(offset);
SystemContext.setSize(15);
chain.doFilter(req, resp);
}finally{
SystemContext.removeOffset();
SystemContext.removeSize();
}
}
@Override
public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub
}
}
user-servlet.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:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
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">
<mvc:annotation-driven />
<context:component-scan base-package="zttc.itat.web" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver" >
<!-- 配置这个属性 -->
<property name="exceptionMappings">
<props>
<!-- 如果发现的是UserException，就到error页面 -->
<prop key="user.model.UserException">error</prop>
</props>
</property>
</bean>
</beans>
web.xml：添加了很多filter
<?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" id="WebApp_ID" version="3.0">
<display-name>springmvc_user</display-name>
<!-- 编码方式 -->
<filter>
<filter-name>CharacterFilter</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>CharacterFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>user</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>user</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 创建Spring的监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Spring 的监听器可以通过这个上下文参数来获取beans.xml的位置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:beans.xml</param-value>
</context-param>
<!-- Spring中提供了 org.springframework.orm.hibernate3.support.OpenSessionInViewFilter;这个类来实现OpenSessionInViewer的操作 -->
<filter>
<filter-name>openSessionInViewerFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>openSessionInViewerFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 获取分页参数 -->
<filter>
<filter-name>SystemContextFilter</filter-name>
<filter-class>zttc.itat.web.SystemContextFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SystemContextFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- login -->
<filter>
<filter-name>LoginFilter</filter-name>
<filter-class>zttc.itat.web.LoginFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>LoginFilter</filter-name>
<url-pattern>/user/*</url-pattern>
</filter-mapping>
<!-- sitemesh -->
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
decorators.xml
<?xml version="1.0" encoding="UTF-8"?> <decorators defaultdir = "/WEB-INF/decorators"> <excludes> <pattern>/exclude.jsp</pattern> <pattern>/exclude/*</pattern> </excludes> <decorator name="main" page="main.jsp"> <pattern>/*</pattern> </decorator> </decorators>
WEB-INF--decorators--main.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://www.opensymphony.com/sitemesh/decorator" prefix="decorator" %>
<%@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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title><decorator:title default="欢迎使用用户管理系统"/></title>
<link rel="stylesheet" type="text/css" href="<%=request.getContextPath()%>/css/main.css"/>
<decorator:head/>
</head>
<body>
<h1><decorator:title /></h1>
<decorator:body />
<div align="center" style="width:100%;border-top:1px solid; float:left;margin-top:10px;">
CopyRight@2012-2015<br/>
开发培训教学项目
</div>
</body>
</html>
在jsp页面获取根目录：request.getContextPath()
list.jsp
<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>用户列表</title>
</head>
<body>
<table width="700" align="center" border="1">
<th>
<td>id</td><td>用户名</td><td>密码</td><td>昵称</td><td>email</td>
</th>
<c:if test="${pagers.total le 0 }">
<tr>
<td colspan="6">没有用户数据</td>
</tr>
</c:if>
<c:if test="${pagers.total gt 0 }">
<c:forEach items="${pagers.datas }" var="u">
<tr>
<td>${u.id }</td>
<td>${u.username }</td>
<td>${u.password }</td>
<td><a href="${u.id}">${u.nickname }</a></td>
<td><a href="${u.id}/update">update</a><a href="${u.id}/delete">delete</a></td>
</tr>
</c:forEach>
<tr>
<td colspan="6">
//引入分页
<jsp:include page="/inc/pager.jsp">
<jsp:param value="users" name="url"/>
<jsp:param value="${pagers.total }" name="items"/>
</jsp:include>
</td>
</tr>
</c:if>
</table>
</body>
</html>
webcontent--inc--pager.jsp 看不懂
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="pg" uri="http://jsptags.com/tags/navigation/pager" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<pg:pager maxPageItems="15" items="${param.items }" export="curPage=pageNumber" url="${param.url }">
<c:forEach items="${param.params }" var="p">
<pg:param name="${p }"/>
</c:forEach>
<pg:last>
共${items }记录,共${pageNumber }页,
</pg:last>
当前第${curPage }页
<pg:first>
<a href="${pageUrl }">首页</a>
</pg:first>
<pg:prev>
<a href="${pageUrl }">上一页</a>
</pg:prev>
<pg:pages>
<c:if test="${curPage eq pageNumber }">
[${pageNumber }]
</c:if>
<c:if test="${curPage ne pageNumber }">
<a href="${pageUrl }">${pageNumber }</a>
</c:if>
</pg:pages>
<pg:next>
<a href="${pageUrl }">下一页</a>
</pg:next>
<pg:last>
<a href="${pageUrl }">尾页</a>
</pg:last>
</pg:pager>
总结：
分页用的是pager这种方法，以后不知道会不会用
sitemesh差不多了
springmvc hibernate的整合，也熟悉了。分层架构，dao注入service，service注入controller