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IEDA开发多项目的示例

 前言:慢慢习惯用IDEA了,觉得用起来确实还不错,有VS的感觉,但是缺点就是每次启动慢,如果修改以后反应也需要好久,这方面做得不好。但是职能提示个人觉得要比Eclipse好太多。好了现在我用IDEA来开发一个简单的功能,希望给刚刚使用不太熟悉或者准备使用IDEA的开发者一点帮助。

1:需求

我们开发一个项目基本的需要一个domain层、dao层、Service层、web层。有的时候我们也需要comment层(存放一些公告调用的一些类)

2:创建项目

第一步:我们先创建一个父工程。

点击file然后选择new选择项目然后到下面界面

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然后按照他的提示下一步就成功的创建了父工程了。然后在pom中把packaging修改为pom,删除src整个目录。

第二步:创建子工程

找到你刚刚创建的父工程右击如下图

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选择以后出现如下图的界面选择你需要的原型,比如(如果你要创建web就可以选择web,也可以不选择)

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最后你对你的模块进行命名就可以了。

3:配置

请参考http://www.cnblogs.com/LipeiNet/p/5810251.html这个进行配置。

4:实战

主要功能就是添加用户到库中

在父工程的pom中把公共依然的jar引入,这是我引用的如下

<properties>        <spring_version>3.1.0.RELEASE</spring_version>    </properties> <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-orm</artifactId>            <version>${spring_version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>${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-tx</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>${spring_version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-aop</artifactId>            <version>${spring_version}</version>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>${spring_version}</version>            <exclusions>                <exclusion>                    <groupId>commons-logging</groupId>                    <artifactId>commons-logging</artifactId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-web</artifactId>            <version>${spring_version}</version>            <exclusions>                <exclusion>                    <groupId>commons-logging</groupId>                    <artifactId>commons-logging</artifactId>                </exclusion>            </exclusions>        </dependency>        <dependency>            <groupId>commons-lang</groupId>            <artifactId>commons-lang</artifactId>            <version>2.6</version>        </dependency>        <dependency>            <groupId>com.migr.common</groupId>            <artifactId>migr-common-util</artifactId>            <version>1.0</version>        </dependency>

 然后在domain工程中可以定义自己的实体类比喻我的就是一个UserBean类如下

public class UserBean implements Serializable{    private int id;//用户自增长id    private String username;//用户名    private String password;//密码    private String realname;//真实姓名    private int userroleid;//用户角色id;    private Date createdate;//添加日期    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public int getId() {        return id;    }    public void setId(int id) {        this.id = id;    }    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;    }    public int getUserroleid() {        return userroleid;    }    public void setUserroleid(int userroleid) {        this.userroleid = userroleid;    }    public Date getCreatedate() {        return createdate;    }    public void setCreatedate(Date createdate) {        this.createdate = createdate;    }}

在开始定义dao工程,在这里采用的是Mybatis,所以要把Mybatis jar包引进过来

 <dependency>            <groupId>com.lp.rpc</groupId>            <artifactId>web-domain</artifactId>            <version>1.0</version>        </dependency>        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis-spring</artifactId>            <version>1.2.2</version>        </dependency>        <dependency>            <groupId>org.mybatis</groupId>            <artifactId>mybatis</artifactId>            <version>3.2.7</version>        </dependency>        <dependency>            <groupId>commons-dbcp</groupId>            <artifactId>commons-dbcp</artifactId>            <version>1.4</version>        </dependency>        <dependency>            <groupId>mysql</groupId>            <artifactId>mysql-connector-java</artifactId>            <version>5.1.26</version>        </dependency>

定义dao中的接口和实现类

public interface UserDao {    /**     * 添加用户     * @param userBean 用户信息     * @return     */    int add(UserBean userBean);    /**     * 验证用户是否存在     * @param userBean 用户信息     * @return     */    int isExistUser(UserBean userBean);}
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" ><mapper namespace="com.lp.rpc.dao.UserDao"><insert id="add" parameterType="com.lp.web.beans.UserBean" keyProperty="id" useGeneratedKeys="true">    INSERT INTO user(username,password,realname,userroleid,createdate)VALUES    (#{username},#{password},#{realname},#{userroleid},#{createdate})</insert>    <select id="isExistUser" parameterType="com.lp.web.beans.UserBean" resultType="java.lang.Integer">        SELECT COUNT(1) FROM user WHERE username=#{username} AND password=#{password}    </select></mapper>

注意的是可以把这个dao写在resource中如下图

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竟然写完dao层了我们就要进行数据源的配置如下

spring-config-dao.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"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <import resource="spring-config-datasource.xml"/>    <!-- myBatis文件 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="dataSource" ref="dataSource" />        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->        <property name="mapperLocations" value="http://www.mamicode.com/classpath:sql/*.xml" />    </bean>    <!-- 注入映射的接口类 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="http://www.mamicode.com/com.lp.rpc.dao" />        <property name="sqlSessionFactoryBeanName" value="http://www.mamicode.com/sqlSessionFactory" />    </bean></beans>

spring-config-datasource.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"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">    <property name="driverClassName" value="http://www.mamicode.com/com.mysql.jdbc.Driver"></property>    <property name="url" value="http://www.mamicode.com/jdbc:mysql://localhost:3306/usermanagerdb?useUnicode=true"></property>    <property name="username" value="http://www.mamicode.com/root"></property>    <property name="password" value="http://www.mamicode.com/123456"></property>    <!--设置连接池初始值-->    <property name="initialSize" value="http://www.mamicode.com/5"></property>    <!--设置连接池最大值-->    <property name="maxActive" value="http://www.mamicode.com/200"></property>    <!--最大等待-->    <property name="maxWait" value="http://www.mamicode.com/10000"></property>    <!--设置连接池最大空闲值-->    <property name="maxIdle" value="http://www.mamicode.com/10"></property>    <!--设置连接池最小空闲值-->    <property name="minIdle" value="http://www.mamicode.com/5"></property></bean></beans>

Service工程在这里比较简单

public interface UserService {   /**    * 添加用户信息    * @param userBean    * @return     */   boolean add(UserBean userBean);   /**    * 验证用户是否存在    * @param userBean    * @return     */   boolean isExist(UserBean userBean);}
@Servicepublic class UserServiceImpl implements UserService {    @Autowired    private UserDao userDao;    public boolean add(UserBean userBean) {        if (userDao.add(userBean)>=0){            return true;        }        return false;    }    public boolean isExist(UserBean userBean) {        if (userDao.isExistUser(userBean)>0){            return true;        }        return false;    }}

最后我们进可以进行web工程了

pom中需要引用下面这几个依赖包

 <dependency>            <groupId>javax.servlet</groupId>            <artifactId>servlet-api</artifactId>            <version>3.0-alpha-1</version>        </dependency>        <dependency>            <groupId>javax.servlet.jsp</groupId>            <artifactId>javax.servlet.jsp-api</artifactId>            <version>2.2.1</version>        </dependency>        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>jstl</artifactId>            <version>1.2</version>        </dependency>

然后建立如下的目录

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然后add.jsp如下

<%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head>    <title>添加用户</title></head><body><form action="/user/save" method="post">    <table>        <tr>            <td>用户名:<input type="text" name="username"></td>            <td>密码:<input type="text" name="password"></td>        </tr>        <tr>            <td>真实姓名:<input type="text" name="realname"></td>            <td>用户角色id:<input type="text" name="userroleid"></td>        </tr>        <tr>            <td><input type="submit" value="http://www.mamicode.com/提交"></td>            <td><input type="reset" value="http://www.mamicode.com/重置"></td>        </tr>    </table></form></body></html>

然后在定义一个UserController

package com.lp.rpc;import com.lp.web.beans.UserBean;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.util.Date;/** * Created by Administrator on 2016/9/2. */@Controller@RequestMapping(value = "/user/")public class UserController {    @Autowired    private UserService userService;    @RequestMapping(value = "dologin",method = RequestMethod.POST)     public ModelAndView login(HttpServletRequest request, HttpServletResponse response) {        String username = request.getParameter("username");        String password = request.getParameter("password");        UserBean userBean = new UserBean();        userBean.setUsername(username);        userBean.setPassword(password);        if (userService.isExist(userBean)){            return new ModelAndView("successful");        }        return new ModelAndView("add");    }    @RequestMapping(value = "add",method = RequestMethod.POST)    public String add(){        return "add";    }    @RequestMapping(value = "save",method = RequestMethod.POST)    public String save(HttpServletRequest request, HttpServletResponse response)    {        String userName=request.getParameter("username");        String password=request.getParameter("password");        String userroleid=request.getParameter("userroleid");        String realname=request.getParameter("realname");        UserBean userBean=new UserBean();        userBean.setUsername(userName);        userBean.setPassword(password);        userBean.setCreatedate(new Date());        userBean.setRealname(realname);        userBean.setUserroleid(Integer.parseInt(userroleid));       if (userService.add(userBean)){           return "successful";       }        return "error";    }}

然后进行配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.4"         xmlns="http://java.sun.com/xml/ns/j2ee"         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <listener>    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>  </listener>  <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:spring/applicationContext.xml</param-value>  </context-param>  <!--springmvc开始-->  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:spring/applicationContext.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>        

然后在进行配置Servlet解析器

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <!-- 前缀 -->        <property name="prefix" value="http://www.mamicode.com/WEB-INF/jsp/" />        <!-- 后缀 -->        <property name="suffix" value="http://www.mamicode.com/.jsp" />        <property name="contentType" value="http://www.mamicode.com/text/html;charset=UTF-8" />    </bean></beans>

最后把所有的配置文件导入applicationContext.xml中

<?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:context="http://www.springframework.org/schema/context"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd       http://www.springframework.org/schema/context    http://www.springframework.org/schema/context/spring-context-3.1.xsd"><import resource="classpath:spring-config-dao.xml"></import>    <import resource="spring-servlet.xml"></import>    <context:component-scan base-package="com.lp.*"/>    <context:annotation-config/></beans>

演示结果:

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然后用zhangsan(库中不存在)去登陆就会跳转到添加用户页面

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点击提交

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如果在添加的时候java不是资源目标记得要转换下

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ok结束了,主要流程基本就是这样的,如果没有使用过IDEA的或者初学者按照写一遍应该会明白IDEA的基本使用。源码等把基于rest的rpc写完了以后一起上传github上。

 

IEDA开发多项目的示例