Struts2+Hibernate 相结合的对数据库的增删改查

版权声明：博客知识产权来源命运的信徒，切勿侵权 https://blog.csdn.net/qq_37591637/article/details/84973461

Hibernate部分

实体类Customer,同样是Action类

package cn.com.dao;
import java.util.List;
import java.util.Map;
import org.apache.struts2.interceptor.RequestAware;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.util.ValueStack;

import cn.com.util.Hibernate_Utils;
public class Customer implements RequestAware {
	private Integer id;
	private String name;
	private String source;
	private String industy;
	private String level;
	private String phone;
	private String moblie;

	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 getSource() {
		return source;
	}

	public void setSource(String source) {
		this.source = source;
	}

	public String getIndusty() {
		return industy;
	}

	public void setIndusty(String industy) {
		this.industy = industy;
	}

	public String getLevel() {
		return level;
	}

	public void setLevel(String level) {
		this.level = level;
	}

	public String getPhone() {
		return phone;
	}

	public void setPhone(String phone) {
		this.phone = phone;
	}

	public String getMoblie() {
		return moblie;
	}

	public void setMoblie(String moblie) {
		this.moblie = moblie;
	}

	/*
	 * author:命运的信徒date:2018/12/12arm:hibernate+Struts2结合，在页面上对数据库的数据进行增删改查
	 */
	private Map<String, Object> requetsmap;

	@Override
	public void setRequest(Map<String, Object> arg0) {
		// TODO Auto-generated method stub
		requetsmap = arg0;
	}

	public String query() {
		// 1.连接数据库
		Session session = Hibernate_Utils.openSession();
		Transaction tx = session.beginTransaction();
		// 2.查询语句
		Query query = session.createQuery("from Customer");
		List<Customer> list = query.list();
		requetsmap.put("list", list);
		tx.commit();
		session.close();
		return "query";
	}

	public String add() {
		return "add";
	}

	public String addinfo() {
		// 增加信息
		Session session = Hibernate_Utils.openSession();
		Transaction tx = session.beginTransaction();
		Customer c = new Customer(id, name, source, industy, level, phone,
				moblie, requetsmap);
		session.save(c);
		tx.commit();
		session.close();
		return "addinfo";
	}

	public String delete() {
		// 删除信息
		Session session = Hibernate_Utils.openSession();
		Transaction tx = session.beginTransaction();
		//查询，由于页面
		Customer c = session.get(Customer.class, id);
		session.delete(c);
		tx.commit();
		session.close();
		return "delete";
	}

	public String update() {
		// 修改信息
		Session session = Hibernate_Utils.openSession();
		Transaction tx = session.beginTransaction();
		//查询，由于页面
		Query query= session.createQuery("from Customer where id=?");
		query.setLong(0, id);
	    Customer c=(Customer) query.uniqueResult();
	   ValueStack vs=ActionContext.getContext().getValueStack();
	   vs.push(c);
		return "update";
	}
	public String up() {
	delete();
	addinfo();
		return "up";
	}
	
	public Customer(Integer id, String name, String source, String industy,
			String level, String phone, String moblie,
			Map<String, Object> requetsmap) {
		super();
		this.id = id;
		this.name = name;
		this.source = source;
		this.industy = industy;
		this.level = level;
		this.phone = phone;
		this.moblie = moblie;
		this.requetsmap = requetsmap;
	}

	public Customer() {
		super();

	}

	@Override
	public String toString() {
		return "Customer [id=" + id + ", name=" + name + ", source=" + source
				+ ", industy=" + industy + ", level=" + level + ", phone="
				+ phone + ", moblie=" + moblie + "]";
	}
	
}

实体类的映射文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
<class name="cn.com.dao.Customer" table="customer" catalog="lf">
<id name="id" column="id" length="255" type="integer">
<generator class="native"></generator>
</id>
<property name="name"></property>
<property name="source"></property>
<property name="industy" column="industry"></property>
<property name="level"></property>
<property name="moblie"></property>
<property name="phone"></property>
</class>
</hibernate-mapping>

Struts部分

连接

<a href="query.action">查看人员信息并对其进行增删改查</a>

Strutx.xml配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
	"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>
<!-- 这个是注明.action,和.do 结尾都可以应答 -->
<constant name="struts.action.extension" value="do,action,kk"></constant>
<package name="tjn" extends="struts-default">
<action name="gg" class="cn.com.action.Person" method="execute">
<!-- result="名称" 当名称是error的时候，代表着对应的是<result name="error"></result>这个信息；exception="异常全类名"-->
<!-- <exception-mapping result="error" exception="java.lang.ArithmeticException">
</exception-mapping> 
<result name="error">/context.jsp</result> -->
<result name="success">/sort.jsp</result>
</action>
<action name="map" class="cn.com.action.RequestTest" >
<result>/one.jsp</result>
</action>

<action name="*" class="cn.com.dao.Customer" method="{1}">
<result name="{1}">/{1}.jsp</result>
</action>
</package>
</struts>

查询页面如下

 <body>
<table>
<tr><td>id</td><td>name</td><td>source</td><td>industry</td><td>level</td><td>phone</td><td>moblie</td><td colspan="2"><a href="add.action">增加</a></td></tr>
<s:iterator value="#request.list" var="customer">
<tr>
<td><s:property value="id" /></td>
<td><s:property value="name" /></td>
<td><s:property value="source" /></td>
<td><s:property value="industy"/></td>
<td><s:property value="level" /></td>
<td><s:property value="phone" /></td>
<td><s:property value="moblie" /></td>
<td><a href="delete.action?id=${id}">删除</a></td>
<td><a href="update.action?id=${id}">修改</a></td>
</tr>
</s:iterator>
</table>
  </body>

增加页面

<body>
    <s:form action="addinfo">
   <s:hidden name="id" ></s:hidden>
   <s:textfield name="name" label="姓名"></s:textfield>
   <s:textfield name="source" label="能量值"></s:textfield>
   <s:textfield name="industy" label="种族"></s:textfield>
   <s:textfield name="level" label="等级"></s:textfield>
   <s:textfield name="phone" label="手机号码"></s:textfield>
   <s:textfield name="moblie" label="区号"></s:textfield>
   <s:submit></s:submit>
    </s:form>
  </body>

修改页面

<body>
	<s:debug></s:debug>
	<s:property value="#request.name" />
	${name}
	<s:form action="up">
		<s:hidden value="%{id}" name="id"></s:hidden>
		<s:textfield value="%{name}" label="name" name="name"></s:textfield>
		<s:textfield value="%{source}" label="source" name="source"></s:textfield>
		<s:textfield value="%{industy}" label="industy" name="industy">
		</s:textfield>
		<s:textfield value="%{level}" label="level" name="level"></s:textfield>
		<s:textfield value="%{phone}" label="phone" name="phone">
		</s:textfield>
		<s:textfield value="%{moblie}" label="moblie" name="moblie"></s:textfield>
		<s:submit></s:submit>
	</s:form>
</body>

删除页面

直接删除，没有页面

不足之处：

1.实体类和Action不知道怎么分开，全部写在一起了？

2.把类放在rquest域里面，不知道怎么在<s:property>里面取出来，尝试用"#request.属性名"，但是取不出来

3.不熟悉，导致这个小的例子做了大概4个小时左右