基于struts2、spring、ibatis、poi的案例，将数据导出致Excel中

基于struts2、spring、ibatis、poi的案例，将数据导出致Excel中

整个工程目录结构图



需要用到的相关jar包结构图



web.xml的配置

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:spring-ds.xml,
classpath*:spring-data.xml,
classpath*:spring-biz.xml,
classpath*:spring-action.xml
</param-value>
</context-param>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>

<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

index.jsp页面

<form action="findUser.action" method="post">
<fieldset>
<div id="select">
<label>用户名:</label><input id="uname" type="text" name="userDO.username"><input type="submit" value="查询" />
</div>
<table border="1" cellpadding="0" cellspacing="0" style="bordercolor:#bed;">
<tr>
<th>编号</th>
<th>用户名</th>
<th>密码</th>
<th>真实姓名</th>
</tr>
<s:iterator id="userDO" value="userList">
<tr>
<td><s:property value="#userDO.id"/></td>
<td><s:property value="#userDO.username"/></td>
<td><s:property value="#userDO.password"/></td>
<td><s:property value="#userDO.realname"/></td>
</tr>
</s:iterator>
</table>
<a href="export.action">导出Excel</a>
</fieldset>
</form>

将ssi的配置文件放置到src目录下，具体配置文如下：

jdbc.properties，spring-action.xml，spring-biz.xml，spring-data.xml，spring-ds.xml，sqlmap-config.xml，struts.xml

jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=root

spring-action.xml

<bean id="userAction" class="com.xdl.action.UserAction" scope="prototype">
<property name="userBO" ref="userBO" />
</bean>

spring-biz.xml

<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>

<bean id="transactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true">
<property name="transactionManager" ref="transactionManager"/>
<property name="transactionAttributes">
<props>
<prop key="add*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED</prop>
<prop key="find*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>

<bean id="userBO" class="com.xdl.biz.impl.UserBOImpl">
<property name="userDAO" ref="userDAO" />
</bean>


spring-data.xml

<bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation">
<value>classpath:sqlmap-config.xml</value>
</property>
</bean>

<bean id="userDAO" class="com.xdl.dao.impl.UserDAOImpl">
<property name="sqlMapClient" ref="sqlMapClient" />
</bean>


spring-ds.xml

<!-- 加载jdbc的配置文件jdbc.properties -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:/jdbc.properties</value>
</list>
</property>
</bean>

<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>


sqlmap-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map
Config 2.0/" "http://www.ibatis.com/dtd/sql-map-config-2.dtd">
<!-- /WEB-INF/dtds/sql-map-config-2.dtd -->

<sqlMapConfig>
<sqlMap resource="com/xdl/dao/maps/sqlmap-user.xml"/>
</sqlMapConfig>

struts.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="default" extends="struts-default">
<action name="findUser" class="userAction" method="queryUser">
<result name="success">/index.jsp</result>
</action>

<action name="export" class="userAction" method="exportExcel">
<result name="success" type="stream">
<param name="contentType">application/vnd.ms-excel</param>
<param name="inputName">inputStream</param>
<param name="contentDisposition">attachment;filename="user.xls"</param>
<param name="bufferSize">4096</param>
</result>
</action>
</package>
</struts>


UserAction.java

package com.xdl.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.struts2.interceptor.ServletResponseAware;

import com.opensymphony.xwork2.ActionSupport;
import com.xdl.biz.IUserBO;
import com.xdl.dataobject.UserDO;

public class UserAction extends ActionSupport implements ServletResponseAware {

private static final long serialVersionUID = 7311940547161671031L;

private UserDO userDO;
private IUserBO userBO;
private List<UserDO> userList;
private HttpServletResponse response;

/***
* @description 模糊查询所有用户信息
* @return
*/
public String queryUser() {
try {
userList = this.userBO.findUser(userDO);
if (userList != null) {
return SUCCESS;
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

/**导出EXCEL*/
public String exportExcel() {
return SUCCESS;
}

public InputStream getInputStream() throws Exception {
return this.getInStream();
}

public InputStream getInStream() throws Exception {
HSSFWorkbook wb = new HSSFWorkbook(); //创建一个工作薄
HSSFSheet sheet = wb.createSheet("用户列表"); //创建一个表,表的名称为"用户列表"

//设置表格的样式
HSSFCellStyle style = wb.createCellStyle();
HSSFFont font = wb.createFont();
font.setFontHeightInPoints((short)10); //字体高度
font.setColor(HSSFFont.COLOR_NORMAL); //字体颜色
font.setFontName("宋体");
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //宽度

style.setFont(font);
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); //水平布局：居中显示
style.setWrapText(false);

HSSFRow row = sheet.createRow(0); //创建第一行

HSSFCell cell = row.createCell(0); //创建第一个单元格
cell.setCellStyle(style); //设置第一个单元格的样式
cell.setCellValue("编号"); //设置第一个单元格的值

cell = row.createCell(1); //创建第二个单元格
cell.setCellStyle(style);
cell.setCellValue("用户名");

cell = row.createCell(2); //创建第三个单元格
cell.setCellStyle(style);
cell.setCellValue("密码");

cell = row.createCell(3); //创建第四个单元格
cell.setCellStyle(style);
cell.setCellValue("真实姓名");

userList = this.userBO.findUser(userDO);
System.out.println(userList.size());
if(userList != null) {
for(int i=0; i<userList.size(); i++) {
row = sheet.createRow(i+1);
cell = row.createCell(i);
row.createCell(0).setCellValue(userList.get(i).getId());
row.createCell(1).setCellValue(userList.get(i).getUsername());
row.createCell(2).setCellValue(userList.get(i).getPassword());
row.createCell(3).setCellValue(userList.get(i).getRealname());
}
}
String fileName = "user";
//fileName = new StringBuffer(fileName).append(".xls").toString();
StringBuffer sb = new StringBuffer(fileName);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
sb.append(df.format(new Date()));
sb.append(".xls");
File file = new File(sb.toString());
try{
OutputStream os = new FileOutputStream(file);
wb.write(os);
os.flush();
os.close();
InputStream is = new FileInputStream(file);
return is;
}catch(Exception e) {
e.printStackTrace();
}
return null;
}

/***
* @Description 获取文件名
* @return
*/
/*public String getFileName() {
StringBuffer sb = new StringBuffer();
sb.append("user-");
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
sb.append(df.format(new Date()));
return sb.toString();
}*/

public UserDO getUserDO() {
return userDO;
}

public void setUserDO(UserDO userDO) {
this.userDO = userDO;
}

public IUserBO getUserBO() {
return userBO;
}

public void setUserBO(IUserBO userBO) {
this.userBO = userBO;
}

public List<UserDO> getUserList() {
return userList;
}

public void setUserList(List<UserDO> userList) {
this.userList = userList;
}

@Override
public void setServletResponse(HttpServletResponse response) {
this.response = response;
}
}

IUserBO.java



UserBOImpl.java



IUserDAO.java



IUserDAOImpl.java



将sqlmap-user.xml文件放入到com.xdl.dao.maps包下

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE sqlMap
PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-2.dtd">

<sqlMap>
<typeAlias alias="userDO" type="com.xdl.dataobject.UserDO"/>

<!--将返回的记录逐个字段的映射赋值给对象userDO的属性上 ，class指出结果集要映射的数据类型 -->
<resultMap class="userDO" id="findAllUser">
<result property="id" column="id"/>
<result property="username" column="username"/>
<result property="password" column="password"/>
<result property="realname" column="realname"/>
</resultMap>

<!--查询全部用户 -->
<select id="FIND-ALL-USER" resultMap="findAllUser">
<![CDATA[
SELECT
id,username,password,realname
FROM
user
]]>
<dynamic prepend="WHERE">
<isNotEmpty prepend="AND" property="username">
username like '%$username$%'
</isNotEmpty>
</dynamic>
</select>
</sqlMap>

实体类UserDO.java

package com.xdl.dataobject;

import java.io.Serializable;

public class UserDO implements Serializable {

private static final long serialVersionUID = 4385670730685946644L;

/** 编号 */
private Integer id;
/** 用户名 */
private String username;
/** 密码 */
private String password;
/** 真实姓名 */
private String realname;

public UserDO() {
}

public UserDO(Integer id, String username, String password, String realname) {
this.id = id;
this.username = username;
this.password = password;
this.realname = realname;
}

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public String getUsername() {
return username;
}

public void setUsername(String username) {
this.username = username;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public String getRealname() {
return realname;
}

public void setRealname(String realname) {
this.realname = realname;
}
}


使用mysql数据库的建表语句

DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '编号',
`username` varchar(10) NOT NULL,
`password` varchar(15) NOT NULL,
`realname` varchar(12) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('1', 'admin', 'admin', '张三');
INSERT INTO `user` VALUES ('2', 'user', 'user', '李斯');
INSERT INTO `user` VALUES ('3', 'aaa', 'aaa', '王五');
INSERT INTO `user` VALUES ('4', 'bbb', 'bbb', '李思');

写的不是很好！