java架构搭建（三）--测试模块编写

我会带着你远行 2022-04-14 02:54 163阅读 0赞

此篇继续上篇 http://blog.csdn.net/lushuaiyin/article/details/8588420

ssh已经整合完毕，现在做一个功能模块测试是否可用。

这个功能我们就叫first。

java代码结构图：

![1361240179_9756.jpg][]

jsp路径结构图：

![1361240183_1795.jpg][]

下面贴出代码:

FirstIndexAction

package org.first.action;
    
    import java.io.PrintWriter;
    import java.util.List;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
    import org.apache.struts2.ServletActionContext;
    import org.base.MyBaseAction;
    import org.first.dao.FirstDao;
    
    import com.opensymphony.xwork2.ActionContext;
    
    public class FirstIndexAction  extends MyBaseAction {
    	private static final long serialVersionUID = 1L;
    	
    	public String execute() throws Exception{
    		
    		return SUCCESS;
    	}	
    	public String firstPage() throws Exception{
    		//继承了MyBaseAction，以下这些调用就简单很多
    		ActionContext ctx = ActionContext.getContext();
    		HttpServletResponse response = (HttpServletResponse) ctx.get(ServletActionContext.HTTP_RESPONSE); 
    		HttpServletRequest request  = (HttpServletRequest) ctx.get(ServletActionContext.HTTP_REQUEST);
    		HttpSession  session  = request.getSession();
    		response.setCharacterEncoding("UTF-8");
    		PrintWriter out = response.getWriter();
    		return SUCCESS;
    	}
    	
    	public String queryUser() throws Exception{
    		String realName="";
    		if(this.getValueFromRequest("realName")!=null){
    			realName=(String)this.getValueFromRequest("realName");
    		}
    		List list=firstDao.queryUsers(realName);
    		this.setValueToRequest("userList", list);
    		return SUCCESS;
    	}
    	
    	private FirstDao firstDao;
    
    	public FirstDao getFirstDao() {
    		return firstDao;
    	}
    	public void setFirstDao(FirstDao firstDao) {
    		this.firstDao = firstDao;
    	}
    }

LsyUser

package org.first.bean;
    
    public class LsyUser {
    	
    	private String user_id;
    	private String user_name;
    	private String real_name;
    	
    	public String getUser_id() {
    		return user_id;
    	}
    	public void setUser_id(String user_id) {
    		this.user_id = user_id;
    	}
    	public String getUser_name() {
    		return user_name;
    	}
    	public void setUser_name(String user_name) {
    		this.user_name = user_name;
    	}
    	public String getReal_name() {
    		return real_name;
    	}
    	public void setReal_name(String real_name) {
    		this.real_name = real_name;
    	}
    
    }

context\_first.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: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-2.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
    
    	<bean id="firstDao" parent="transactionProxyTemplate">
    		<property name="target">
    			<bean class=" org.first.dao.impl.FirstDaoImpl">
    				<property name="sessionFactory">
    					<ref bean="sessionFactory"/>
    				</property>
    			</bean>
    		</property>
    		<property name="proxyInterfaces">
    			<value> org.first.dao.FirstDao</value>
    		</property>
    	</bean>
    </beans>

LsyUser.hbm.xml

<?xml version="1.0"?>
    <!DOCTYPE hibernate-mapping PUBLIC 
    	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
    
    <hibernate-mapping>
    	    <class name="org.first.bean.LsyUser" table="LSY_USER_DEVELOP" >
            <id name="user_id" type="java.lang.String">
                <column name="user_id" length="32" />
                <generator class="assigned" />
            </id>
            <property name="user_name" type="java.lang.String">
                <column name="user_name" length="32" />
            </property>
            <property name="real_name" type="java.lang.String">
                <column name="real_name" length="32" />
            </property>
        </class>
    </hibernate-mapping>

数据库表我就不说了，就是很简单的3个字段，都是varcher类型。

struts\_first.xml

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
    <struts>
    	<package name="first" extends="base-struts-default" namespace="/first">
    	    	
    		<action name="firstPage" class="org.first.action.FirstIndexAction" method="firstPage">
    		   <result name="success">/jsp/first/firstPage.jsp</result>
    		</action>
    		<action name="queryUser" class="org.first.action.FirstIndexAction" method="queryUser">
    		   <result name="success">/jsp/first/listUser.jsp</result>
    		</action>
    	</package>
    </struts>

FirstDao

package org.first.dao;
    
    import java.util.List;
    
    public interface FirstDao {
    	
    	public List queryUsers(String realName);
    
    }

FirstDaoImpl

package org.first.dao.impl;
    
    import java.util.List;
    
    import org.base.MyHibernateDao;
    import org.first.dao.FirstDao;
    
    public class FirstDaoImpl extends MyHibernateDao implements FirstDao{
    	
    	public List queryUsers(String realName){
    		List list=null;
    		if(realName==null||realName.trim().equals("")){
    			System.out.println("参数realName为空，查询所有值。");
    			String hql="select u from LsyUser u ";
    			list=this.queryListHql(hql);
    		}else{
    			String hql="select u from LsyUser u where u.real_name like '%"+realName.trim()+"%'";
    			list=this.queryListHql(hql);
    		}
    		return list;
    	}
    }

index.jsp（项目首页）

<%@ page contentType="text/html; charset=UTF-8"%>
    <% 
    String path = request.getContextPath();
    %>
    
    <html>
    <head>
    	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    	<title></title>
    	<script src="<%=path%>/script/jquery-1.7.1.min.js" type="text/javascript"></script>	
    </head>
    <body style="overflow: scroll; overflow: auto;">
    
    <input type="hidden" name="path" id="path" value='<%=path%>' ></input>
    
        <center>
         <h1>首页</h1>
        </center>
        <table width="500px" align="center">
           <tr width="100%">
               <td >账号：</td>
               <td ><input type="text" value="" id="username"></input></td>
               
               <td >密码：</td>
               <td ><input type="text" value="" id="password"></input></td>
           </tr>
           
           <tr width="100%">
               <td >查询用户：</td>
               <td ><input type="radio"  checked value="1" name="logintype"></input></td>
               
               <td >查询部门：</td>
              <td ><input type="radio"   value="2" name="logintype"></input></td>
           </tr>
           
           <tr width="100%">
               <td ></td>
               <td ><input type="button" value="登录" οnclick="login()"></input></td>
               
               <td ></td>
               <td ><input type="button" value="重置" οnclick="resetValue()"></input></td>
           </tr>
           
        </table>
    </body>
    </html> 
    
    <script type="text/javascript">	
    //简单的登录
    function login(){
    	var username=document.getElementById("username").value;
    	var password=document.getElementById("password").value;
    	if(username!=null&&username!=""){
    		var urlpath="<%=path%>"+"/jsp/first/firstPage.jsp?randomStr="+Math.random();
    		var urlpath2="<%=path%>"+"/jsp/second/secondPage.jsp?randomStr="+Math.random();
    		var type=getRadioGroupValue();
    		if(type=="2"){
    			window.location.href=urlpath2;
    		}else{
    			window.location.href=urlpath;
    		}
    	}else{
    		alert("账号密码不正确！");
    	}
    	
    }
    
    function resetValue(){
    	document.getElementById("username").value="";
    	document.getElementById("password").value="";
    }
    
    //js获取单选按钮组的值
    function getRadioGroupValue(){
    	var result="";
    	var logintype=document.getElementsByName("logintype");
    	if(logintype!=null&&(typeof logintype !="undifined")){
    		for(i=0;i<logintype.length;i++){
    			if(logintype[i].checked){
    				result=logintype[i].value;
    			}
    		}
    	}
    	return result;
    }
    </script>

firstPage.jsp

listUser.jsp

<%@ page contentType="text/html; charset=UTF-8"%>
    <%@page import="java.util.*"%>
    <%@page import=" org.first.bean.LsyUser"%>
    <% 
    String path = request.getContextPath();
    %>
    <% 
    List list=null;
    if(request.getAttribute("userList")!=null){
    	list=(List)request.getAttribute("userList");
    }
    %>
    <html>
    <head>
    	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    	<title></title>
    	<script src="<%=path%>/script/jquery-1.7.1.min.js" type="text/javascript"></script>	
    </head>
    <body style="overflow: scroll; overflow: auto;">
    
    <input type="hidden" name="path" id="path" value='<%=path%>' ></input>
    
          <table width="500px"  border="1" align="center">
            <tr>
    			 <td align="center">姓名:<input type="text"  id="realName" value='' ></input></td>
    		</tr>
    		<tr>
    			 <td align="center"><h1><a href="javascript:void(0)" οnclick="queryuser()">查询</a></h1></td>
    		</tr>
    	</table>
    	
    	 <table width="500px"  border="1" align="center">
            <tr>
    			 <th align="center">姓名</th><th align="center">账号</th>
    		</tr>
    		<% 
    		if(list!=null){
    			for(int i=0;i<list.size();i++){
    				LsyUser user=(LsyUser)list.get(i);
    				if(user!=null){
    					String realname="";
    					String user_name="";
    					if(user.getReal_name()!=null){
    						realname=user.getReal_name();
    					}
    					if(user.getUser_name()!=null){
    						user_name=user.getUser_name();
    					}
    		%>			
    				<tr>
    					 <td><%=realname%></td><td><%=user_name%></td>
    				</tr>
    		<%	
    				}
    			}
    		}
    		%>
    		
    	</table>
    </body>
    </html> 
    <script type="text/javascript">	
    
    function queryuser(){
    	var urlpath="<%=path%>"+"/first/queryUser.action";
    	var realName=document.getElementById("realName").value;
    	$.ajax({
    		   type:"POST",
    		   url:urlpath,
    		   data: "realName="+realName+"&randomStr="+Math.random(),
    		   success: function(msg){
    		     alert( "Succeed:");
    		     window.location.reload();
    		   }
    		});
    }
    
    
    </script>

此功能我已经测试过，能正常使用。代码就不讲解了，就是很简单的一个查询。目的只是为了测试ssh的整合是否成功。

Hibernate这个框架的好处就是帮我们处理持久层的东西。

如果我想把数据库从orcle移植到mysql，利用hibernate就很简单。

步骤：

1：修改对sessionFactory的配置。

因为属性的值都放到properties中了，所以我只需要修改configure.properties，如下：

# applicationContext.xml
    
    ### C3P0 Connection Pool
    c3p0.maxPoolSize=3
    c3p0.minPoolSize=1
    c3p0.maxIdleTime=1800
    c3p0.maxStatements=0
    c3p0.acquireIncrement=2
    c3p0.idleConnectionTestPeriod=600
    
    #oracle  
    #jdbc.driverClassName=oracle.jdbc.driver.OracleDriver
    #jdbc.url=jdbc:oracle:thin:@10.55.15.66:1521:cdbank
    #jdbc.username=ccdb
    #jdbc.password=ccdb
    #hibernate.dialect=org.hibernate.dialect.Oracle9Dialect
    
    #mysql
    jdbc.driverClassName=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql://127.0.0.1:3306/mydb
    jdbc.username=root
    jdbc.password=root
    hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect

2：记得添加驱动包mysql-connector-java-5.1.13-bin.jar，并引入classpath。

3：创建对应的数据库和表。

这里我想说的是Hibernate中的一个属性<prop key="hibernate.hbm2ddl.auto">update</prop>

这个hibernate.hbm2ddl.auto有一下几个值：

validate               加载hibernate时，验证创建数据库表结构
    create                  每次加载hibernate，重新创建数据库表结构，这就是导致数据库表数据丢失的原因。
    create-drop        加载hibernate时创建，退出是删除表结构
    update                 加载hibernate自动更新数据库结构

在此如果我们在移植数据库时（当然只是开发过程，不关心数据的情况下），我们可以配置这个属性帮我们创建表。

等完成后一定要把此属性删掉。为什么呢？因为数据库时很重要的，所以很多大公司才高新聘请DBA，这种用程序操作

数据库本身就很危险。在你对hibernate源码都没怎么看的情况下，这种方式就不自量力了。

下一篇我们要将代码中一个比较重要的内容，那就是spring事务的使用。这里已经用到了，只是内容太多，放到下篇再细说吧。

[1361240179_9756.jpg]: https://img-my.csdn.net/uploads/201302/19/1361240179_9756.jpg
[1361240183_1795.jpg]: https://img-my.csdn.net/uploads/201302/19/1361240183_1795.jpg