使用ant编译打包、部署简单的javaweb项目 --02

和上一次的并没胡什么不同，也就是多了一个使用ant初始化mysql数据库

目录结构：

D:\code\kongee\ant_web_three
λ tree /f
卷 软件 的文件夹 PATH 列表
卷序列号为 000D-CD8E
D:.
│  .classpath
│  .project
│  build.xml
│  studentbak.sql
│
├─.settings
│      .jsdtscope
│      org.eclipse.jdt.core.prefs
│      org.eclipse.wst.common.component
│      org.eclipse.wst.common.project.facet.core.xml
│      org.eclipse.wst.jsdt.ui.superType.container
│      org.eclipse.wst.jsdt.ui.superType.name
│
├─src
│  └─com
│      └─laolang
│          ├─dao
│          │      IStudentDao.java
│          │      StudetDao.java
│          │
│          ├─modle
│          │      Student.java
│          │
│          ├─servlet
│          │      HelloServlet.java
│          │      ShowServlet.java
│          │
│          └─util
│                  DButil.java
│                  student-sql.properties
│
└─WebContent
    │  hello.jsp
    │  index.jsp
    │  show.jsp
    │
    ├─META-INF
    │      MANIFEST.MF
    │
    └─WEB-INF
        │  web.xml
        │
        └─lib
                mysql-connector-java-5.1.28-bin.jar

D:\code\kongee\ant_web_three
λ

代码：

modle

com.laolang.modle.Student

package com.laolang.modle;

public class Student {

	public Student() {
		super();
	}

	public Student(String name, int age, String sex) {
		super();
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	public Student(int id, String name, int age, String sex) {
		super();
		this.id = id;
		this.name = name;
		this.age = age;
		this.sex = sex;
	}

	@Override
	public String toString() {
		return "Student [id=" + id + ", name=" + name + ", age=" + age
				+ ", sex=" + sex + "]";
	}

	public int getId() {
		return id;
	}

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

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}

	private int id;
	private String name;
	private int age;
	private String sex;
}

dao

IStudentDao

package com.laolang.dao;

import java.util.List;

import com.laolang.modle.Student;

public interface IStudentDao {

	public List<Student> selectAll() ;
}

StudentDao

package com.laolang.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import com.laolang.modle.Student;
import com.laolang.util.DButil;

public class StudetDao implements IStudentDao {

	@Override
	public List<Student> selectAll() {
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;

		List<Student> stus = new ArrayList<Student>();

		try {
			conn = DButil.getConnection();
			String sql = "select stuid,stuname,stuage,stusex from student";
			ps = conn.prepareStatement(sql);
			rs = ps.executeQuery();

			while( rs.next() ){
				Student stu = new Student();
				stu.setId(rs.getInt("stuid"));
				stu.setName(rs.getString("stuname"));
				stu.setAge(rs.getInt("stuage"));
				stu.setSex(rs.getString("stusex"));
				stus.add(stu);
			}

		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			DButil.close(rs);
			DButil.close(ps);
			DButil.close(conn);
		}

		return stus;
	}

}

util

student-sql.properties

jdbc.url=jdbc:mysql://localhost:3306/student
jdbc.username=root
jdbc.userpassword=root
jdbc.driver=com.mysql.jdbc.Driver

com.laolang.util.DButil

package com.laolang.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ResourceBundle;

public class DButil {

	/** 数据库连接地址 */
	private static String URL;

	/** 数据库用户名 */
	private static String USERNAME;

	/** 数据库密码 */
	private static String USERPASSWORD;

	/** mysql 驱动 */
	private static String DRIVER;

	/** The rb. */
	private static ResourceBundle rb = ResourceBundle
			.getBundle("com.laolang.util.student-sql");

	/**
	 * 使用静态代码块加载驱动
	 */
	static {
		URL = rb.getString("jdbc.url");
		USERNAME = rb.getString("jdbc.username");
		USERPASSWORD = rb.getString("jdbc.userpassword");
		DRIVER = rb.getString("jdbc.driver");

		try {
			Class.forName(DRIVER);
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
	}

	public static Connection getConnection() throws SQLException {
		Connection con = null;
		con = DriverManager.getConnection(URL, USERNAME, USERPASSWORD);
		return con;
	}

	public static void close(Connection con) {
		try {
			if (con != null)
				con.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public static void close(PreparedStatement ps) {
		try {
			if (ps != null)
				ps.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public static void close(ResultSet rs) {
		try {
			if (rs != null)
				rs.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}
}

servlet

com.laolang.servlet.HelloServlet

package com.laolang.servlet;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class HelloServlet
 */
public class HelloServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public HelloServlet() {
        super();
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setAttribute("hello", "world");
		RequestDispatcher dis = request.getRequestDispatcher("hello.jsp");
		dis.forward(request, response);
	}

}

com.laolang.servlet.ShowServlet

package com.laolang.servlet;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.laolang.dao.IStudentDao;
import com.laolang.dao.StudetDao;
import com.laolang.modle.Student;

/**
 * Servlet implementation class ShowServlet
 */
public class ShowServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public ShowServlet() {
        super();
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		IStudentDao dao = new StudetDao();

		List<Student> stus = dao.selectAll();

		for( Student stu : stus ){
			System.out.println(stu);
		}

		request.setAttribute("stus", stus);

		request.getRequestDispatcher("show.jsp").forward(request, response);

	}

}

jsp

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
This is a jsp page!
<br />
<a href="hello.do">hello</a>
<br />
<a href="show.do">show</a>

</body>
</html>

hello.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>Hello:${hello }</h1>

</body>
</html>

show.jsp

<%@page import="java.util.List"%>
<%@page import="com.laolang.modle.Student"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<table border="1">
	<tr>
		<th>学号</th>
		<th>姓名</th>
		<th>年龄</th>
		<th>性别</th>
	</tr>
	<%
		//@SuppressWarnings("unchecked")
		List<Student> stus = (List<Student>)request.getAttribute("stus");
		for( Student stu : stus){
	%>
		<tr>
			<td><%=stu.getId() %></td>
			<td><%=stu.getName() %></td>
			<td><%=stu.getAge() %></td>
			<td><%=stu.getSex() %></td>
		</tr>
	<%
		}
	%>
</table>
</body>
</html>

sql

studentbak.sql

/*
SQLyog Ultimate v11.11 (64 bit)
MySQL - 5.5.38 : Database - student
*********************************************************************
*/

/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=‘‘*/;

/*!40014 SET @[email protected]@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @[email protected]@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @[email protected]@SQL_MODE, SQL_MODE=‘NO_AUTO_VALUE_ON_ZERO‘ */;
/*!40111 SET @[email protected]@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`student` /*!40100 DEFAULT CHARACTER SET utf8 */;

USE `student`;

/*Table structure for table `student` */

DROP TABLE IF EXISTS `student`;

CREATE TABLE `student` (
  `stuid` int(11) NOT NULL AUTO_INCREMENT,
  `stuname` varchar(20) DEFAULT NULL,
  `stuage` int(11) DEFAULT NULL,
  `stusex` varchar(2) DEFAULT NULL,
  PRIMARY KEY (`stuid`)
) ENGINE=InnoDB AUTO_INCREMENT=1006 DEFAULT CHARSET=utf8;

/*Data for the table `student` */

insert  into `student`(`stuid`,`stuname`,`stuage`,`stusex`) values (1001,‘xiaodaima‘,24,‘男‘),(1002,‘小叶子‘,25,‘女‘),(1003,‘老狼‘,34,‘男‘),(1004,‘龙女‘,43,‘女‘),(1005,‘天涯‘,18,‘男‘);
/*insert  into `student`(`stuid`,`stuname`,`stuage`,`stusex`) values (1001,‘小代码‘,24,‘男‘),(1002,‘小叶子‘,25,‘女‘),(1003,‘老狼‘,34,‘男‘),(1004,‘龙女‘,43,‘女‘),(1005,‘天涯‘,18,‘男‘);*/

/*!40101 SET [email protected]_SQL_MODE */;
/*!40014 SET [email protected]_FOREIGN_KEY_CHECKS */;
/*!40014 SET [email protected]_UNIQUE_CHECKS */;
/*!40111 SET [email protected]_SQL_NOTES */;

build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="ant_web_hello">
	<!-- java源代码目录 -->
	<property name="src.dir" location="src" />
	<!-- 构建目录 -->
	<property name="build.dir" location="build" />
	<!-- class文件目录 -->
	<property name="build.classes" location="${build.dir}/classes" />
	<!-- 打包目录 -->
	<property name="build.war" location="${build.dir}/war" />

	<!-- tomcat根目录 -->
	<property name="tomcat.home" location="D:\program\program\java\tomcat\tomcat" />
	<!-- <property name="tomcat.lib" location="${tomcat.home}/lib" /> -->
	<!-- web 应用的名字，也是打包后war的名字 -->
	<property name="web.name" value="anthello2" />
	<!-- web 根目录 -->
	<property name="web.root" value="webContent" />
	<property name="web.WEB-INF" location="${web.root}/WEB-INF" />
	<property name="web.lib" location="${web.WEB-INF}/lib" />
	<property name="mysqldriver" location="${web.lib}/mysql-connector-java-5.1.28-bin.jar" />
	<!-- 加载环境变量 -->
	<property environment="env" />

	<!-- 定义编译时的classpath -->
	<path id="compile.path">
		<fileset dir="${web.lib}" includes="*.lib">
		</fileset>
		<fileset dir="${env.tomcat_home}/lib">
			<include name="*.jar" />
		</fileset>
	</path>

	<target name="init" description="初始化">
		<mkdir dir="${build.dir}" />
		<mkdir dir="${build.classes}" />
		<mkdir dir="${build.war}" />
		<echo>初始化工作结束！</echo>
	</target>

	<target name="compile" depends="init" description="编译">
		<javac destdir="build/classes" srcdir="src" includeantruntime="false" fork="true">
			<compilerarg line="-encoding UTF-8 " />
			<classpath refid="compile.path" />
		</javac>
		<echo message="编译完成！" />
	</target>

	<target name="war" depends="compile" description="打包war文件">
		<war destfile="${build.war}/${web.name}.war">
			<fileset dir="${web.root}" includes="**/*.*" />
			<lib dir="${web.lib}" />
			<webinf dir="${web.WEB-INF}" />
			<classes dir="${build.classes}" />
		</war>
		<echo>打包完成！</echo>
	</target>

	<!--
	此处有问题，如果使用classpath refid="compile.path" 会提示
	Class Not Found: JDBC driver com.mysql.jdbc.Driver could not be loaded
	<presetdef name="sql-admin">
		<sql userid="root" password="root" url="jdbc:mysql://localhost:3306/mysql?useUnicode=true&amp;characterEncoding=utf-8" driver="com.mysql.jdbc.Driver">
			<classpath refid="compile.path">
			</classpath>
		</sql>
	</presetdef>
	-->

	<presetdef name="mysql-admin">
		<sql userid="root" password="root" url="jdbc:mysql://localhost:3306/mysql?useUnicode=true&amp;characterEncoding=utf-8" driver="com.mysql.jdbc.Driver" classpath="${mysqldriver}" print="true" encoding="utf-8">
		</sql>
	</presetdef>

	<target name="mysql-init" description="初始化数据库">
		<mysql-admin>
			<transaction src="studentbak.sql" />
		</mysql-admin>
		<echo>数据库初始化完成！</echo>
	</target>

	<target name="mysql-test" depends="mysql-init" description="数据库测试">
		<mysql-admin>
			<transaction>
				use student;
				select database();
				show tables;
				select * from student;
			</transaction>
		</mysql-admin>
		<echo>数据库测试完成！</echo>
	</target>

	<target name="testenv" description="测试环境变量">
		<echo>JAVA_HOME:${env.JAVA_HOME}</echo>
		<echo>CLASSPATH:${env.CLASSPATH}</echo>
		<echo>tomcat_home:${env.tomcat_home}</echo>
		<echo>${web.lib}</echo>
		<echo>${mysqldriver}</echo>
	</target>

	<target name="deploy" depends="mysql-test,war" description="发布">
		<copy todir="${env.tomcat_home}/webapps">
			<fileset dir="${build.war}" includes="*.war" />
		</copy>
		<echo>已发布到Tomcat！</echo>
	</target>

	<target name="clean" description="清理">
		<delete dir="${build.dir}" />
		<delete dir="${env.tomcat_home}/webapps/${web.name}" />
		<delete file="${env.tomcat_home}/webapps/${web.name}.war" />
		<echo>清理完成！</echo>
	</target>

</project>

执行过程：

D:\code\kongee\ant_web_two>ant deploy
Buildfile: D:\code\kongee\ant_web_two\build.xml

mysql-init:
[mysql-admin] Executing resource: D:\code\kongee\ant_web_two\studentbak.sql
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 1 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 5 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 0 rows affected
[mysql-admin] 15 of 15 SQL statements executed successfully
     [echo] 数据库初始化完成！

mysql-test:
[mysql-admin] Executing commands
[mysql-admin] 0 rows affected
[mysql-admin] database()
[mysql-admin] student
[mysql-admin]
[mysql-admin] 0 rows affected
[mysql-admin] TABLE_NAME
[mysql-admin] student
[mysql-admin]
[mysql-admin] 0 rows affected
[mysql-admin] stuid,stuname,stuage,stusex
[mysql-admin] 1001,xiaodaima,24,男
[mysql-admin] 1002,小叶子,25,女
[mysql-admin] 1003,老狼,34,男
[mysql-admin] 1004,龙女,43,女
[mysql-admin] 1005,天涯,18,男
[mysql-admin]
[mysql-admin] 0 rows affected
[mysql-admin] 4 of 4 SQL statements executed successfully
     [echo] 数据库测试完成！

init:
    [mkdir] Created dir: D:\code\kongee\ant_web_two\build
    [mkdir] Created dir: D:\code\kongee\ant_web_two\build\classes
    [mkdir] Created dir: D:\code\kongee\ant_web_two\build\war
     [echo] 初始化工作结束！

compile:
    [javac] Compiling 6 source files to D:\code\kongee\ant_web_two\build\classes
     [echo] 编译完成！

war:
      [war] Building war: D:\code\kongee\ant_web_two\build\war\anthello.war
     [echo] 打包完成！

deploy:
     [copy] Copying 1 file to D:\program\program\java\tomcat\tomcat\webapps
     [echo] 已发布到Tomcat！

BUILD SUCCESSFUL
Total time: 6 seconds

D:\code\kongee\ant_web_two>

在firefox中的运行效果：

index.jsp

hello.do

show.do

修改studentbak.sql将xiaodaima修改为小代码

问题：

1、关于ant的构建目录和eclipse class的存放目录

由于使用ant时构建目录在build，而eclipse的class存放目录也是在build，所以每次使用ant进行部署时，必须在eclipse中进行project->clean操作才可以，否则出现下面的错误

我不理解这到底是为什么，如果说是由于eclipse自动编译的class文件的问题，那么为什么HelloServlet就没有问题？

PS：这里说的clean是指：在进行ant deploy之前，必须要clean，且clean后不能在eclipse中进行任何操作，否则要再次clean，不然还是会出现上图中的错误，我修改了ant的构建目录后，依然不行，这个问题让我很不解，有哪个高手指点下？

2、关于ant 中的sql

使用ant进行mysql操作的时候，不能使用path定义的classpath，也就是说在sql中不能使用classpathref，而应该使用property指向mysql的jar包的相对路径，再在sql中使用classpath引用 这个property，否则会出现Class Not Found: JDBC driver com.mysql.jdbc.Driver could not be loaded

如果想要显示sql的执行结果，可以将print指定为true

时间： 2024-11-03 21:00:40

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