Flex + MySQL + Tomcat 小例子

环境

1.服务器:Tomcat

2.数据库:MySQL

3.IDE:Eclipse+FlexBuilder插件

前期准备

1.MySQL里新建数据库,命名test

2.新建表,命名:person,脚本如下:

CREATE TABLE `te_person` (
`id` VARCHAR(20) COLLATE utf8_general_ci NOT NULL DEFAULT '',
`name` VARCHAR(20) COLLATE utf8_general_ci NOT NULL DEFAULT '',
`sex` INTEGER(2) DEFAULT NULL,
`content` TEXT COLLATE utf8_general_ci,
PRIMARY KEY (`id`)
)ENGINE=InnoDB
CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';

3.任意插入两条记录即可

步骤

1.新建Flex Project工程,命名:FlexSample

2.在src下新建包,命名:test

3.在test包下新建类,命名:HelloWorld(源码在文章下方)

4.在flex_src下新建MXML APPLICATION文件,命名:Hello.mxml(源码在文章下方)

5.在web.xml里增加一段代码(源码在文章下方)

测试

1.启动Tomcat

2.右键单击Hello.mxml, ->run as Flex Application

运行效果如下图



源码

1. HelloWorld.java

package test;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;
public class HelloWorld extends HttpServlet {
private static final long serialVersionUID = 1L;
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/test";
String user = "root";
String password = "root";
Statement stmt = null;
Connection con = null;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/xml;charset=utf-8");
response.setHeader("Cache-Control", "no-cache");
String content = "";
try {
Class.forName(driver);
} catch (Exception e) {
System.out.println("无法加载驱动程序" + driver);
}
try {
con = (Connection) DriverManager.getConnection(url, user, password);
con.setAutoCommit(false);
stmt = (Statement) con.createStatement();
String querySql = "select * from te_person";
ResultSet result = stmt.executeQuery(querySql);
while (result.next()) {
String personName = result.getString("name");
int sex = result.getInt("sex");
String sexy;
if (sex == 0) {
sexy = "男";
} else {
sexy = "女";
}
String personContent = result.getString("content");
content += "<person><name>" + personName + "</name><sex>"
+ sexy + "</sex><content>" + personContent
+ "</content></person>";
}
content="<?xml version=/"1.0/" encoding=/"utf-8/"?><persons>"+content+"</persons>";
System.out.println("content:" + content);
PrintWriter writer = response.getWriter();
writer.write(content);
writer.close();
stmt.close();
con.close();
} catch (SQLException ee) {
System.out.println("数据库连接失败");
} finally {
try {
if (!con.isClosed()) {
stmt.close();
con.close();
}
} catch (SQLException e) {
System.out.print("数据库关闭连接失败");
}
}
}
}

2.Hello.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
creationComplete="feedRequest.send()" >
<mx:HTTPService id="feedRequest"
url="http://localhost:8080/FlexSample/helloWorld"
useProxy="false" />
<mx:Panel x="10" y="10" width="475" height="400" layout="absolute"
title="{dgPosts.selectedItem.name}" color="#1C06F6" fontSize="16">
<mx:DataGrid x="20" y="20" id="dgPosts" width="400" dataProvider="{feedRequest.lastResult.persons.person}" fontFamily="Times New Roman" fontSize="16">
<mx:columns>
<mx:DataGridColumn headerText="Name" dataField="name"/>
<mx:DataGridColumn headerText="Sex" dataField="sex"/>
<mx:DataGridColumn headerText="Content" dataField="content"/>
</mx:columns>
</mx:DataGrid>
</mx:Panel>
</mx:Application>

http://p.blog.csdn.net/images/p_blog_csdn_net/wozeze1/EntryImages/20090603/flexsample.jpg
3.web.xml

<servlet>
<display-name>helloWorld</display-name>
<servlet-name>helloWorld</servlet-name>
<servlet-class>test.HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>helloWorld</servlet-name>
<url-pattern>/helloWorld</url-pattern>
</servlet-mapping>