日期:2014-05-16 浏览次数:20606 次
首先在mySql数据库中建立表:
/*
SQLyog Community v8.71
MySQL - 5.1.53-community
*********************************************************************
*/
/*!40101 SET NAMES utf8 */;
create table `Resource` (
`id` int (10),
`key` varchar (300),
`remark` varchar (300)
);
insert into `Resource` (`id`, `key`, `remark`) values('100','student.name','no remark');
insert into `Resource` (`id`, `key`, `remark`) values('101','student.address','no remark');
insert into `Resource` (`id`, `key`, `remark`) values('102','student.age','no remark');
insert into `Resource` (`id`, `key`, `remark`) values('103','student.sex','no remark');
insert into `Resource` (`id`, `key`, `remark`) values('104','student.phone','no remark');
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然后,建立Connection连接,写一个连接类:
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package pack.java.connection.database;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* 数据库连接类;
* @author Administrator
*
*/
public class BaseConnection {
private final String USERNAME = "root";
private final String PASSWORD = "mysql";
private final String URL = "jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=utf-8";
private final String DRIVER = "com.mysql.jdbc.Driver";
/**
* 获取Connection连接;
* @return
*/
private Connection getConnection(){
Connection connection = null;
try {
Class.forName(DRIVER);
connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("驱动不存在!");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return connection;
}
/**
* 获取PreparedStatement;
* @return
*/
private PreparedStatement getPreparedStatement(String sql){
Connection connection = getConnection();
PreparedStatement preparedStatement = null;
try {
preparedStatement = connection.prepareStatement(sql);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return preparedStatement;
}
public ResultSet getResultSet(String sql){
PreparedStatement preparedStatement = getPreparedStatement(sql);
ResultSet resultSet = null;
try {
resultSet = preparedStatement.executeQuery();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("查询出错!");
}
return resultSet;
}
}
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首先定义一个JavaBean ,ResourceVO类,用来映射数据库的字段.
之后,就是通过,调用BaseConnection中的一个getResultSet方法返回ResultSet拼成成一个List<ResourceVO>集合;
这个过程就不说了,篇幅太长了.
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然后,在Action中就调用方法,得到一个List<ResourceVO>集合;并且提供getter,setter方法.
package pack.java.file.upload.action;
import java.util.List;
import pack.java.service.ResourceService;
import pack.java.service.ResourceServiceImpl;
import pack.java.vo.ResourceVO;
import com.opensymphony.xwork2.ActionSupport;
/**
* Resource Action
* @author Administrator
*
*/
public class ResourceAction extends ActionSupport{
private static final long serialVersionUID = -4190531063573107186L;
private ResourceService resourceService = new ResourceServiceImpl();
private List<ResourceVO> resourceVOList;
public List<ResourceVO> getResourceVOList() {
return resourceVOList;
}
public void setResourceVOList(List<ResourceVO> resourceVOList) {
this.resourceVOList = resourceVOList;
}
/**
* 显示所有的资源文件集合;
* @return
*/
public String displayResourceVO(){
this.resourceVOList = resourceService.getResourceVOAll();
System.out.println("resourceVOList 集合大小:"+resourceVOList.size());
return SUCCESS;
}
}
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定义一个displayResource.jsp页面用于显示.资源国际化.