java框架配置大全之-spring

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java框架

注：所有java框架配置都是基于maven创建的

先介绍下maven如何创建eclipse项目，eclipse安装maven插件看链接

1 eclipse 中new-maven project

点击 create simple project ,填写属性

直接点finish，然后webapp里面添加WEB-INF文件夹和文件夹下的web.xml

web.xml内容暂时可以写为：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	<display-name>springapp</display-name>
	
</web-app>

web.xml的格式<?xml开头，注意web-app的几个属性，这里经常会导致其他问题很难找,可以让页面获取不到值。

以前是基本的maven 创建项目步骤，下面用maven配置框架，看spring的配置

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.zj.app</groupId>
  <artifactId>springapp</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>test04 Maven Webapp</name>  
  <url>http://maven.apache.org</url>  
   <!-- 属性配置 -->  
  <properties>  
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
  </properties>  
  <dependencies>  
    <dependency>  
      <groupId>junit</groupId>  
      <artifactId>junit</artifactId>  
      <version>4.10</version>  
      <scope>test</scope>  
    </dependency>  
    <!-- 添加Spring依赖 -->  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-core</artifactId>  
        <version>3.1.1.RELEASE</version>  
    </dependency>  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-beans</artifactId>  
        <version>3.1.1.RELEASE</version>  
    </dependency>  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-context</artifactId>  
        <version>3.1.1.RELEASE</version>  
    </dependency>  
    <dependency>  
        <groupId>org.springframework</groupId>  
        <artifactId>spring-jdbc</artifactId>  
        <version>3.1.1.RELEASE</version>  
    </dependency>  
      
  </dependencies>
  <!-- maven打包的名称 -->  
  <build>  
    <finalName>springapp</finalName>  
  </build>  
</project>

这个时候发现springapp 几个字在eclipse是红色的小警告，不要紧，是The word 'springapp' is not correctly spelled，并不是错误，在eclipse 去掉它

然后再resources目录创建application.xml文件

<?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" xmlns:context="http://www.springframework.org/schema/context"  
    xsi:schemaLocation="  
     http://www.springframework.org/schema/beans   
     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
     http://www.springframework.org/schema/tx   
     http://www.springframework.org/schema/tx/spring-tx-3.0.xsd  
     http://www.springframework.org/schema/aop   
     http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
     http://www.springframework.org/schema/context  
     http://www.springframework.org/schema/context/spring-context-3.0.xsd">
     
</beans>

暂时一个空的spring项目出来的

点击项目右键 run as -maven install

如果出现下面的内容一个空的spring项目就OK了

这些基本的步骤，后面不会再说，只会提到POM文件配置，先用最原始的方式学习

先用spring做一个基本的增删改查吧。对象以书Book为例

1 创建对象Book.java

package com.zj.app.book.entity;

import java.io.Serializable;
import java.math.BigDecimal;
public class Book implements Serializable {
	private static final long serialVersionUID = 1L;
	public Book() { 
		
	}
	private Long id;
	// 标题
	private String title;
	// 描述
	private String describe;
	// 价格
	private BigDecimal price;
	// 类型
	private int type;
	// 剩余数量
	private int surplusAmount;
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getDescribe() {
		return describe;
	}
	public void setDescribe(String describe) {
		this.describe = describe;
	}
	public BigDecimal getPrice() {
		return price;
	}
	public void setPrice(BigDecimal price) {
		this.price = price;
	}
	public int getType() {
		return type;
	}
	public void setType(int type) {
		this.type = type;
	}
	public int getSurplusAmount() {
		return surplusAmount;
	}
	public void setSurplusAmount(int surplusAmount) {
		this.surplusAmount = surplusAmount;
	}
}

2 dao接口

package com.zj.app.book.dao;

public interface IBookDao {
	public void saveBook();  
}

dao实现

package com.zj.app.book.dao.impl;
import com.zj.app.book.dao.IBookDao;
public class BookDaoImpl implements IBookDao {
	public void saveBook() {
		System.out.println("---dao save start-----");  
		System.out.println("保存对象");
		System.out.println("---dao save start-----");  
	}
}

service接口

package com.zj.app.book.service;
public interface IBookService {  
    public void saveBook();  
}

service实现

package com.zj.app.book.service.impl;
import com.zj.app.book.dao.IBookDao;
import com.zj.app.book.service.IBookService;
public class BookServiceImpl implements IBookService {  
    private IBookDao iBookDao;  
    public void setBookDao(IBookDao bookDao) {  
        this.iBookDao = bookDao;  
    }  
    public void saveBook() {  
        System.out.println("---service save start-----");  
        iBookDao.saveBook();  
        System.out.println("---service save end-----");  
    }  
}

然后Junit 测试下

package com.zj.app.book;

import org.junit.Before;
import org.junit.Test;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.zj.app.book.service.IBookService;
public class BookTest {
	private BeanFactory factory = null;
	@Before
	public void before() {
		factory = new ClassPathXmlApplicationContext("applicationContext.xml");
	}
	@Test
	public void testSpring() {
		IBookService bookService = (IBookService) factory
				.getBean("bookService");
		bookService.saveBook();
	}
}

运行结果为

简答的测试结束了 spring运行是正常的

下面配置一下 springmvc之后再配置mybatis

POM配置不够灵活，先改下POM

这种方式修改版本比上面更方便

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.zj.app</groupId>
  <artifactId>springapp</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>Maven Webapp</name>  
  <url>http://maven.apache.org</url>  
  <!-- 属性配置 -->  
  <properties>  
  	<spring.version>3.1.1.RELEASE</spring.version>
  	<junit.version>4.11</junit.version>
	<jdk.version>1.7</jdk.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
  </properties>  
  <dependencies>  
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>    
	        <groupId>org.springframework</groupId>    
	        <artifactId>spring-beans</artifactId>    
	        <version>${spring.version}</version>    
	    </dependency>    
	    <dependency>    
	        <groupId>org.springframework</groupId>    
	        <artifactId>spring-context</artifactId>    
	        <version>${spring.version}</version>    
	    </dependency>    
	    <dependency>    
	        <groupId>org.springframework</groupId>    
	        <artifactId>spring-jdbc</artifactId>    
	        <version>${spring.version}</version>    
	    </dependency>
	    <dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>  
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>${junit.version}</version>
			<scope>test</scope>
		</dependency> 
      
  </dependencies>
  <!-- maven打包的名称 -->  
  <!-- ========================= -->
  <build>
		<finalName>springapp</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.0</version>
				<configuration>
					<source>${jdk.version}</source>
					<target>${jdk.version}</target>
				</configuration>
			</plugin>
		</plugins>
	</build>
	<!-- ========================= --> 
</project>

这样就方便了好多，下面开始spring mvc

下面配置一下springmvc

把 application.xml删掉，web-inf文件夹下建文件 mvc-dispatcher-servlet.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" xmlns:context="http://www.springframework.org/schema/context"  
    xsi:schemaLocation="  
     http://www.springframework.org/schema/beans   
     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
     http://www.springframework.org/schema/tx   
     http://www.springframework.org/schema/tx/spring-tx-3.0.xsd  
     http://www.springframework.org/schema/aop   
     http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
     http://www.springframework.org/schema/context  
     http://www.springframework.org/schema/context/spring-context-3.0.xsd">
     <context:component-scan base-package="com.zj.app.book.controller" />
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix">
			<value>/WEB-INF/pages/</value>
		</property>
		<property name="suffix">
			<value>.jsp</value>
		</property>
	</bean>
     <bean id="bookDao" class="com.zj.app.book.dao.impl.BookDaoImpl"></bean>  
     <bean id="bookService" class="com.zj.app.book.service.impl.BookServiceImpl">  
		<property name="bookDao" ref="bookDao"></property>  
     </bean> 
</beans>

之前application.xml的配置都放这里了

web.xml修改下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	<display-name>springapp</display-name>
	<servlet>
		<servlet-name>mvc-dispatcher</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>mvc-dispatcher</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
	</context-param>

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

然后新增java文件

package com.zj.app.book.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.zj.app.book.service.IBookService;
@Controller
@RequestMapping("/")
public class BookController {
    @Autowired
    IBookService iBookService;              ;
	@RequestMapping(value = "/welcome", method = RequestMethod.GET)
	public String welcome(ModelMap model) {
		model.addAttribute("message","hellojava");
		return "index";
	}
	@RequestMapping(value = "/welcome/{name}", method = RequestMethod.GET)
	public String welcomeName(@PathVariable String name,ModelMap model) {
		iBookService.saveBook();
		model.addAttribute("message", " /welcome hellojava"
				+ name);
		return "index";
	}
}

web-inf文件夹下建立 pages文件夹然后再pages文件夹下创建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>你好</title>
</head>
<body>
	<h1>你好${message}</h1>
</body>
</html>

jetty运行项目，输入 http://localhost:8080/springapp/welcome/dsf

同时看下控制台，service和dao的输出。

现在又向前走了一步了。

下一步需要进一步做数据库的操作，框架用mybatis,此文有点过长了，写在下一篇吧

maven代码也放上来仅仅8kb maven真爽