前言:慢慢習慣用IDEA了,覺得用起來確實還不錯,有VS的感覺,但是缺點就是每次啟動慢,如果修改以後反應也需要好久,這方面做得不好。但是職能提示個人覺得要比Eclipse好太多。好了現在我用IDEA來開發一個簡單的功能,希望給剛剛使用不太熟悉或者准備使用IDEA的開發者一點幫助。
我們開發一個項目基本的需要一個domain層、dao層、Service層、web層。有的時候我們也需要comment層(存放一些公告調用的一些類)
第一步:我們先創建一個父工程。
點擊file然後選擇new選擇項目然後到下面界面
然後按照他的提示下一步就成功的創建了父工程了。然後在pom中把packaging修改為pom,刪除src整個目錄。
第二步:創建子工程
找到你剛剛創建的父工程右擊如下圖
選擇以後出現如下圖的界面選擇你需要的原型,比如(如果你要創建web就可以選擇web,也可以不選擇)
最後你對你的模塊進行命名就可以了。
3:配置
請參考http://www.cnblogs.com/LipeiNet/p/5810251.html這個進行配置。
4:實戰
主要功能就是添加用戶到庫中
在父工程的pom中把公共依然的jar引入,這是我引用的如下
<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>
然後在domain工程中可以定義自己的實體類比喻我的就是一個UserBean類如下
public class UserBean implements Serializable{ private int id;//用戶自增長id private String username;//用戶名 private String password;//密碼 private String realname;//真實姓名 private int userroleid;//用戶角色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; } }
在開始定義dao工程,在這裡采用的是Mybatis,所以要把Mybatis jar包引進過來
<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>
定義dao中的接口和實現類
public interface UserDao { /** * 添加用戶 * @param userBean 用戶信息 * @return */ int add(UserBean userBean); /** * 驗證用戶是否存在 * @param userBean 用戶信息 * @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>
注意的是可以把這個dao寫在resource中如下圖
竟然寫完dao層了我們就要進行數據源的配置如下
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" /> <!-- 自動掃描entity目錄, 省掉Configuration.xml裡的手工配置 --> <property name="mapperLocations" value="classpath:sql/*.xml" /> </bean> <!-- 注入映射的接口類 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.lp.rpc.dao" /> <property name="sqlSessionFactoryBeanName" value="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="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/usermanagerdb?useUnicode=true"></property> <property name="username" value="root"></property> <property name="password" value="123456"></property> <!--設置連接池初始值--> <property name="initialSize" value="5"></property> <!--設置連接池最大值--> <property name="maxActive" value="200"></property> <!--最大等待--> <property name="maxWait" value="10000"></property> <!--設置連接池最大空閒值--> <property name="maxIdle" value="10"></property> <!--設置連接池最小空閒值--> <property name="minIdle" value="5"></property> </bean> </beans>
Service工程在這裡比較簡單
public interface UserService { /** * 添加用戶信息 * @param userBean * @return */ boolean add(UserBean userBean); /** * 驗證用戶是否存在 * @param userBean * @return */ boolean isExist(UserBean userBean); }
@Service public 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; } }
最後我們進可以進行web工程了
pom中需要引用下面這幾個依賴包
<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>
然後建立如下的目錄
然後add.jsp如下
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>添加用戶</title> </head> <body> <form action="/user/save" method="post"> <table> <tr> <td>用戶名:<input type="text" name="username"></td> <td>密碼:<input type="text" name="password"></td> </tr> <tr> <td>真實姓名:<input type="text" name="realname"></td> <td>用戶角色id:<input type="text" name="userroleid"></td> </tr> <tr> <td><input type="submit" value="提交"></td> <td><input type="reset" value="重置"></td> </tr> </table> </form> </body> </html>
然後在定義一個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"; } }
然後進行配置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開始--> <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>
然後在進行配置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"> <!-- 前綴 --> <property name="prefix" value="/WEB-INF/jsp/" /> <!-- 後綴 --> <property name="suffix" value=".jsp" /> <property name="contentType" value="text/html;charset=UTF-8" /> </bean> </beans>
最後把所有的配置文件導入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>
演示結果:
然後用zhangsan(庫中不存在)去登陸就會跳轉到添加用戶頁面
點擊提交
如果在添加的時候java不是資源目標記得要轉換下
ok結束了,主要流程基本就是這樣的,如果沒有使用過IDEA的或者初學者按照寫一遍應該會明白IDEA的基本使用。源碼等把基於rest的rpc寫完了以後一起上傳github上。