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我是新來的春天，正在一個例子。這個例子演示瞭如何使用hibernate將數據添加到表中，並列出它，我試圖添加額外的刪除選項，但它的更新記錄，而不是。我將在下面發佈完整的代碼。 （2）我使用jsp和servlet以及大量jquery ajax開發簡單的web應用程序，我也希望在spring中使用ajax，我能夠以相同方式編寫代碼，還是能夠編寫與我必須學習的內容不同的代碼。坦率地說，我看到春天模式後很害怕.. :)。新的春天，無法刪除用戶使用休眠
調度-servlet.xml中
<?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: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-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<!--
Most controllers will use the ControllerClassNameHandlerMapping above, but
for the index controller we are using ParameterizableViewController, so we must
define an explicit mapping for it.
-->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="index.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/production"/>
<property name="username" value="tpsl_admin"/>
<property name="password" value="admin"/>
</bean>
<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="annotatedClasses">
<list>
<value>com.org.domain.User</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
</bean>
<bean id="myUserDAO" class="com.org.dao.UserDAOImpl">
<property name="sessionFactory" ref="mySessionFactory"/>
</bean>
<bean name="/user/*.htm" class="com.org.web.UserController" >
<property name="userDAO" ref="myUserDAO" />
</bean>
<!--
The index controller.
-->
<bean name="indexController" class="org.springframework.web.servlet.mvc.ParameterizableViewController"
p:viewName="index" />
</beans>
的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 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_3_0.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>redirect.jsp</welcome-file>
</welcome-file-list>
</web-app>
UserDAO.java
package com.org.dao;
import com.org.domain.User;
import java.util.List;
public interface UserDAO {
public void saveUser(User user) ;
public List<User> listUser() ;
public void deleteUser(User user) ;
}
UserDAOImpl.java
package com.org.dao;
import com.org.domain.User;
import java.util.List;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.HibernateTemplate;
public class UserDAOImpl implements UserDAO {
private HibernateTemplate hibernateTemplate;
public void setSessionFactory(SessionFactory sessionFactory) {
this.hibernateTemplate = new HibernateTemplate(sessionFactory);
}
@Override
public void saveUser(User user) {
hibernateTemplate.saveOrUpdate(user);
}
@Override
@SuppressWarnings("unchecked")
public List<User> listUser() {
return hibernateTemplate.find("from User");
}
@Override
public void deleteUser(User user) {
hibernateTemplate.delete(user);
}
}
User.java
package com.org.domain;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="USER")
public class User {
private Long id;
private String name;
private String password;
private String gender;
private String country;
private String aboutYou;
private String[] community;
private Boolean mailingList;
@Id
@GeneratedValue
@Column(name="USER_ID")
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Column(name="USER_NAME")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Column(name="USER_PASSWORD")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Column(name="USER_GENDER")
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
@Column(name="USER_COUNTRY")
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
@Column(name="USER_ABOUT_YOU")
public String getAboutYou() {
return aboutYou;
}
public void setAboutYou(String aboutYou) {
this.aboutYou = aboutYou;
}
@Column(name="USER_COMMUNITY")
public String[] getCommunity() {
return community;
}
public void setCommunity(String[] community) {
this.community = community;
}
@Column(name="USER_MAILING_LIST")
public Boolean getMailingList() {
return mailingList;
}
public void setMailingList(Boolean mailingList) {
this.mailingList = mailingList;
}
}
UserController.java
package com.org.web;
import com.org.dao.UserDAO;
import com.org.domain.User;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;
public class UserController extends MultiActionController {
private UserDAO userDAO;
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
@RequestMapping(params = "add", method = RequestMethod.POST)
public ModelAndView add(HttpServletRequest request,
HttpServletResponse response, User user) throws Exception {
userDAO.saveUser(user);
return new ModelAndView("redirect:list.htm");
}
@RequestMapping(params = "delete", method = RequestMethod.POST)
@Transactional
public ModelAndView delete(HttpServletRequest request,
HttpServletResponse response, User user) throws Exception {
userDAO.deleteUser(user);
return new ModelAndView("redirect:list.htm");
}
public ModelAndView list(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelMap modelMap = new ModelMap();
modelMap.addAttribute("userList", userDAO.listUser());
modelMap.addAttribute("user", new User());
return new ModelAndView("userForm", modelMap);
}
}
確定這就是所有的代碼，我現在用的IDE是NetBeans中，sprinf ver是3.1.1。 Hibernate 3.0。有些人請告訴我我需要改變的地方我在2天內嘗試失敗。如果可能，還請解釋我自己的代碼，我有許多疑問。
三江源
userForm.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<style type="text/css">
.even {
background-color: silver;
}
</style>
<title>Registration Page</title>
</head>
<body>
<form:form action="add.htm" commandName="user" method="post">
<table>
<tr>
<td>User Name :</td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td>Password :</td>
<td><form:password path="password" /></td>
</tr>
<tr>
<td>Gender :</td>
<td><form:radiobutton path="gender" value="M" label="M" />
<form:radiobutton path="gender" value="F" label="F" /></td>
</tr>
<tr>
<td>Country :</td>
<td><form:select path="country">
<form:option value="0" label="Select" />
<form:option value="India" label="India" />
<form:option value="USA" label="USA" />
<form:option value="UK" label="UK" />
</form:select></td>
</tr>
<tr>
<td>About you :</td>
<td><form:textarea path="aboutYou" /></td>
</tr>
<tr>
<td>Community :</td>
<td><form:checkbox path="community" value="Spring" label="Spring" />
<form:checkbox path="community" value="Hibernate" label="Hibernate" />
<form:checkbox path="community" value="Struts" label="Struts" />
</td>
</tr>
<tr>
<td></td>
<td><form:checkbox path="mailingList" label="Would you like to join our mailinglist?" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" name="add" value="Register"></td>
<td colspan="2"><input type="button" name="delete" value="Delete"></td>
</tr>
</table>
</form:form>
<c:if test="${fn:length(userList) > 0}">
<table cellpadding="5">
<tr class="even">
<th>ID</th>
<th>Name</th>
<th>Gender</th>
<th>Country</th>
<th>About You</th>
<th>Mailing List</th>
<th>Community</th>
</tr>
<c:forEach items="${userList}" var="user" varStatus="status">
<tr class="<c:if test="${status.count % 2 == 0}">even</c:if>">
<td>${user.id}</td>
<td>${user.name}</td>
<td>${user.gender}</td>
<td>${user.country}</td>
<td>${user.aboutYou}</td>
<td>${user.mailingList}</td>
<td>${user.community}</td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
你得到的錯誤是什麼？ –
顯示**錯誤**和'userForm.jsp'，可能是您的URL映射錯誤 – tesla1984
添加您的打印股權跟蹤，以便獲取錯誤類型和行號 –