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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
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
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)
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
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
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:
然后用zhangsan(库中不存在)去登陆就会跳转到添加用户页面
点击提交
如果在添加的时候java不是资源目标记得要转换下
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