【超詳細demo編寫過程】idea中使用maven多模組結合ssm框架+mysql
寫這篇文章的原因
這段時間自己也正是在學習這塊,網上找了很多都沒有詳細的例子,然後基礎還不夠紮實的原因,花了不少時間才最後跑起來,所以寫這篇文章,希望能夠幫到入門的兄弟們,希望可以少走一些彎路,當然也有可能看這篇文章的時候就已經走上了彎路(開個玩笑)。同時也希望有大神看到我的這篇文章,能指出不足之處,本人也非常渴望進步以及學到新的東西和思想!
demo需求
這個demo主要的業務邏輯就是:使用者通過index.jsp進入登入介面,可以註冊會員,會員登入後可以對論文進行簡單的增刪改查。開發工具
- IntelliJ IDEA Ultimate 2018.1.3.x
- Apache-tomcat-9.0.81
- JDK 1.8.0_172
- MySQL 5.7.22
- Maven 3.3.9
工程結構
首先說明一下我對多模組的專案的理解:
1.多模組是通過各個模組的pom.xml檔案聯絡起來的,繼承或依賴關係在pom.xml檔案裡體現;
2.多個模組中有一個父模組,其他為它的子模組,父模組的pom.xml負責管理所有jar包;
3.web是最“靠外”的一個模組,modle是最“靠內”的一個模組,所以在pom檔案的依賴中,web是需要依賴其他的一些特定的模組的,但是modle不需要,相反,很多模組需要依賴他。
最終完成後的工程結構如圖:
IDEA+Maven搭建專案骨架
新建資料庫:
由於資料庫內容設計的非常簡單,用的是以前隨便做的資料庫表,在這裡就只直接貼圖給大家看看是什麼樣的了。
大家建立好資料庫之後再開始下面的步驟吧~
新建Maven專案:
點選File -> New -> Project ->Empty Project->next
確定後,繼續點選File-->new ,如下圖,新建一個module
這裡因為是要把他作為父模組,沒有什麼其他特別的操作,所以選擇quickstart
這裡選擇自己的maven
再點選next會需要等一下,maven會自動建立wzy.parent的內部結構
然後再右鍵wzy.parent,選擇moudle,以同樣的方式建立wzy.modle,需要注意的是,下圖需要按照步驟設定,不然多模組看起來結構會不清晰。
還有下面這一處也要改成wzy.modle
點選next會生成wzy.modle模組。
接下來以wzy.modle一樣的順序,建立wzy.bll、wzy.commons、wzy.dal、wzy.factory。
建立好這些模組之後,我們開始建立wzy.web模組,建立web和其他的不一樣,如下圖所示(注意:此處不要錯選成上面的cocoom-22-archetype-webapp)
所有模組建立完之後需要做下列操作,設定各個模組裡面的一些資料夾的屬性,如下
設定好之後,每一個模組裡面需要建的類及相關檔案及程式碼如下:
wzy.parent:
parent的pom.xml如下
<?xml version="1.0" encoding="UTF-8"?>
<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.wzy</groupId>
<artifactId>wzy.parent</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<module>../wzy.modle</module>
<module>../wzy.web</module>
<module>../wzy.factory</module>
<module>../wzy.dal</module>
<module>../wzy.commons</module>
<module>../wzy.bll</module>
</modules>
<name>wzy.parent</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring.version>5.0.3.RELEASE</spring.version>
<mybatis.version>3.4.4</mybatis.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- 第一部分:Spring 配置-->
<!-- Spring core -->
<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>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring DAO -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring mvc -->
<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>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 第二部分:Servlet web -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>
<!-- 第三部分:資料庫和mybatis -->
<!-- 資料庫 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<!-- 資料庫連線池 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<!-- mybatis-spring整合包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 第四部分:日誌 -->
<!-- 實現slf4j介面並整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
wzy.modle:
Paper:
package com.wzy.modle;
public class Paper {
private long paperId;
private String paperName;
private int paperNum;
private String paperDetail;
//實體類
public long getPaperId() {
return paperId;
}
public void setPaperId(long paperId) {
this.paperId = paperId;
}
public String getPaperName() {
return paperName;
}
public void setPaperName(String paperName) {
this.paperName = paperName;
}
public int getPaperNum() {
return paperNum;
}
public void setPaperNum(int paperNum) {
this.paperNum = paperNum;
}
public String getPaperDetail() {
return paperDetail;
}
public void setPaperDetail(String paperDetail) {
this.paperDetail = paperDetail;
}
}
User:
package com.wzy.modle;
public class User {
private int id;
private String name;
private String userName;
private String passWord;
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 String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
}
Wzy.factory:
PaperFactory:
package com.wzy.factory;
import java.util.List;
import com.wzy.modle.Paple;
public interface PaperFactory {
int addPaper(Paper paper);
int deletePaperById(long id);
int updatePaper(Paper paper);
Paper queryById(long id);
List<Paper> queryAllPaper();
}
這裡我們import Paper 的時候還是會報錯,是因為這個module沒有依賴wzy.module這個module,所以他找不到modle包,因此找不到Paper類,所以我們需要在Factory的pom檔案中加入與modle的依賴,如下:
UserFactory :
wzy.dal:
paperDal:
package com.wzy.dal;
import java.util.List;
import com.wzy.modle.Paper;
public interface PaperDal {
int addPaper(Paper paper);
int deletePaperById(long id);
int updatePaper(Paper paper);
Paper queryById(long id);
List<Paper> queryAllPaper();
}
這裡會報和factory一樣的錯誤,按照一樣的方法去解決就好了。
UserDal:
package com.wzy.dal;
import com.wzy.modle.User;
public interface UserDal {
int addUser(User user);
// 使用者登入
User userSubmit(String username,String password);
//根據賬號查詢所有資訊
User findByUsername(String username);
}
PaperDalImpl:@Service,這個註解加上去是配合相關配置檔案中
<context:component-scan base-package="XXX"/>這一段進行自動注入spring容器裡面。如果想重寫父類的方法,比如toString()方法的話,在方法前面加上@Override, 系統可以幫你檢查方法的正確性,@Autowired 這個註解就是 spring可以自動幫你把bean裡面引用的物件的setter/getter方法省略,它會自動幫你set/get。
package com.wzy.dal.impl;
import com.wzy.dal.PaperDal;
import com.wzy.modle.Paper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.wzy.factory.PaperFactory;
import java.util.List;
@Service
public class PaperDalImpl implements PaperDal {
@Autowired
private PaperFactory paperFactory;
@Override
public int addPaper(Paper paper) {
return paperFactory.addPaper(paper);
}
@Override
public int deletePaperById(long id) {
return paperFactory.deletePaperById(id);
}
@Override
public int updatePaper(Paper paper) {
return paperFactory.updatePaper(paper);
}
@Override
public Paper queryById(long id) {
return paperFactory.queryById(id);
}
@Override
public List<Paper> queryAllPaper() {
return paperFactory.queryAllPaper();
}
}
這裡也會報一個錯誤,原因是沒有依賴wzy.factory這個module,找不到PaperFactory,所以會報錯,解決辦法也是在POM檔案裡面加dependency,讓本身這個module依賴wzy.factory。UserDalImpl:
package com.wzy.dal.impl;
import com.wzy.dal.UserDal;
import com.wzy.factory.UserFactory;
import com.wzy.modle.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserDalImpl implements UserDal {
@Autowired
private UserFactory userFactory;
private User user;
@Override
//這個標籤如果是在沒有用implements去實現userdal的情況下的話,就會報錯
public int addUser(User user) {
return userFactory.addUser(user);
}
@Override
public User userSubmit(String username,String password){
User user = userFactory.findByUsername(username);
if(user != null && user.getPassWord().equals(password)){
return user;
}
return null;
}
@Override
public User findByUsername(String username)
{
return userFactory.findByUsername(username);
}
}
wzy.bll:
PaperBll: 這裡使用RequestMapping(“/paper”),告訴頁面“我PaperBll的代號就是 /paper,你們有事就叫我這個名字,我下面的方法也有自己的名字,你們要用的時候就叫我給他們取的名字就好了”。 controller 這個是告訴掃描器,你應該要來掃描我這個包。被Controller標記的類就是一個控制器,這個類中的方法,就是相應的動作。
package com.wzy.bll;
import com.wzy.dal.PaperDal;
import com.wzy.modle.Paper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.List;
//控制器,負責接收頁面請求,轉發和處理。
@Controller
@RequestMapping("/paper")
public class PaperBll {
@Autowired
private PaperDal paperDal;
@RequestMapping("/allPaper")
public String list(Model model) {
List<Paper> list = paperDal.queryAllPaper();
model.addAttribute("list", list);
return "allPaper";
}
@RequestMapping("toAddPaper")
public String toAddPaper() {
return "addPaper";
}
@RequestMapping("/addPaper")
public String addPaper(Paper paper) {
paperDal.addPaper(paper);
return "redirect:/paper/allPaper";
}
@RequestMapping("/del/{paperId}")
public String deletePaper(@PathVariable("paperId") Long id) {
paperDal.deletePaperById(id);
return "redirect:/paper/allPaper";
}
@RequestMapping("toUpdatePaper")
public String toUpdatePaper(Model model, Long id) {
model.addAttribute("paper", paperDal.queryById(id));
return "updatePaper";
}
@RequestMapping("/updatePaper")
public String updatePaper(Model model, Paper paper) {
paperDal.updatePaper(paper);
paper = paperDal.queryById(paper.getPaperId());
model.addAttribute("paper", paper);
return "redirect:/paper/allPaper";
}
}
這裡的報錯原因是和前幾個一樣的,都是沒有新增依賴。
UserBll:
package com.wzy.bll;
import com.wzy.dal.UserDal;
import com.wzy.modle.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.SessionAttributes;
import javax.servlet.http.HttpSession;
//控制器,負責接收頁面請求,轉發和處理。
@Controller
@RequestMapping("/user")
//這裡用了@SessionAttributes,可以直接把model中的user(也就key)放入其中
//這樣保證了session中存在user這個物件
@SessionAttributes("user")
public class UserBll {
@Autowired
private UserDal userDal;
//正常訪問login頁面
@RequestMapping("toLogin")
public String login(){
return "login";
}
//表單提交過來的路徑
@RequestMapping("userSubmit")
public String userSubmit(User user, Model model){
//呼叫service方法
user = userDal.userSubmit(user.getUserName(),user.getPassWord());
//若有user則新增到model裡並且跳轉到成功頁面
if(user != null){
model.addAttribute("user",user);
return "allPaper";
}
return "login";
}
/*@RequestMapping("/allPaper")
//定義一個handelRequest方法對映/allPaper訪問
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
//用allPaper訪問地址例項化一個ModelAndView物件
ModelAndView mav = new ModelAndView("allPaper");
//注入資訊
mav.addObject("message", "Hello Spring MVC");
return mav;
}
@RequestMapping("/jump")
public ModelAndView jump() {
//redirect:/allPaper表示客戶端跳轉
ModelAndView mav = new ModelAndView("redirect:/allPaper");
return mav;
}*/
/*
@RequestMapping("/allPaper")
//"/check"的訪問對映方法需要接受一個HttpSession類的引數
public ModelAndView check(HttpSession session) {
//i的值等於session中count變數的值
Integer i = (Integer)session.getAttribute("count");
if(i==null)
i=0;
i++;
//將自增後的i重新賦值給count
session.setAttribute("count", i);
ModelAndView mav = new ModelAndView("allPaper");
return mav;
}
*/
@RequestMapping("addUser")
public String addUser(User user) {
userDal.addUser(user);
return "redirect:/user/toLogin";
}
//註冊使用者
@RequestMapping("toUserRegister")
public String userRegister(){
return "userRegister";
}
//測試超連結跳轉到另一個頁面是否可以取到session值
@RequestMapping("/anotherpage")
public String hrefpage(){
return "anotherpage";
}
//登出方法
@RequestMapping("/outLogin")
public String outLogin(HttpSession session){
//通過session.invalidata()方法來登出當前的session
session.invalidate();
return "login";
}
}
到這裡除了wzy.web的每一個module裡面的基本內容就全部寫完了,值得注意的是,除了web和parent的pom檔案,其他的怕pom檔案裡面的的packageing 都是 jar,而web 的為war, parent 的為 pom。
wzy.web:
這裡要單獨寫,是因為涉及到配置檔案,涉及到網頁,我先全部貼出來,其中我碰到的問題或者我覺得可能會出問題的我挑出來和大家分享一下。
結構還是如下圖所示(沒有自動建立的資料夾或檔案需要自己手動建立):
下面我們開始寫每一個配置檔案和網頁的程式碼,寫的過程中也會碰到沒有依賴的問題,解決辦法和先前一樣,加依賴就好啦。
PaperMapper.xml:
<?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.wzy.factory.PaperFactory">
<resultMap type="Paper" id="paperResultMap" >
<id property="paperId" column="paper_id"/>
<result property="paperName" column="name"/>
<result property="paperNum" column="number"/>
<result property="paperDetail" column="detail"/>
</resultMap>
<insert id="addPaper" parameterType="Paper">
INSERT INTO paper(paper_id,name,number,detail) VALUE (#{paperId},#{paperName}, #{paperNum}, #{paperDetail})
</insert>
<delete id="deletePaperById" parameterType="long">
DELETE FROM paper WHERE paper_id=#{paperID}
</delete>
<update id="updatePaper" parameterType="Paper">
UPDATE paper
SET NAME = #{paperName},NUMBER = #{paperNum},detail = #{paperDetail}
WHERE paper_id = #{paperId}
</update>
<select id="queryById" resultType="Paper" parameterType="long">
SELECT paper_id,name,number,detail
FROM paper
WHERE paper_id=#{paperId}
</select>
<select id="queryAllPaper" resultMap="paperResultMap">
SELECT paper_id,name,number,detail
FROM paper
</select>
</mapper>
UserMapper.xml:
<?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.wzy.factory.UserFactory">
<resultMap type="User" id="userResultMap" >
<id property="id" column="id"/>
<result property="name" column="name"/>
<result property="userName" column="username"/>
<result property="passWord" column="password"/>
</resultMap>
<insert id="addUser" parameterType="User">
INSERT INTO t_user(id,name,username,password) VALUE (#{id},#{name}, #{userName}, #{passWord})
</insert>
<!-- 目的:為DAO介面方法提供sql語句配置 -->
<!-- 查詢使用者和密碼進行登入 -->
<select id="findByUsername" resultType="User" parameterType="String">
select * from t_user where username = #{userName}
</select>
</mapper>
spring-dal.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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 掃描service包下所有使用註解的型別 -->
<!-- 4.配置掃描dal介面包,動態實現Dao介面,注入到spring容器中-->
<!--<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!– 注入sqlSessionFactory –>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!– 給出需要掃描dal介面包 –>
<property name="basePackage" value="com.wzy.dal"/>
</bean>-->
<!-- 掃描service包下所有使用註解的型別 -->
<context:component-scan base-package="com.wzy.dal" />
<!-- 配置事務管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入資料庫連線池 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 配置基於註解的宣告式事務 -->
<tx:annotation-driven transaction-manager="transactionManager" />
</beans>
spring-factory.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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 配置整合mybatis過程 -->
<!-- 1.配置資料庫相關引數properties的屬性:${url} -->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 2.資料庫連線池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 配置連線池屬性 -->
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- c3p0連線池的私有屬性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 關閉連線後不自動commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 獲取連線超時時間 -->
<property name="checkoutTimeout" value="10000"/>
<!-- 當獲取連線失敗重試次數 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 3.配置SqlSessionFactory物件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入資料庫連線池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 配置MyBaties全域性配置檔案:mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!-- 掃描pojo包 使用別名 -->
<property name="typeAliasesPackage" value="com.wzy.modle"/>
<!-- 掃描sql配置檔案:mapper需要的xml檔案 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 4.配置掃描Dao介面包,動態實現Dao介面,注入到spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 給出需要掃描Dao介面包 -->
<property name="basePackage" value="com.wzy.factory"/>
</bean>
</beans>
spring-mvc.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<!-- 配置SpringMVC -->
<!-- 1.開啟SpringMVC註解模式 -->
<!-- 簡化配置:
(1)自動註冊DefaultAnootationHandlerMapping,AnotationMethodHandlerAdapter
(2)提供一些列:資料繫結,數字和日期的format @NumberFormat, @DateTimeFormat, xml,json預設讀寫支援
-->
<mvc:annotation-driven />
<!-- 2.靜態資源預設servlet配置
(1)加入對靜態資源的處理:js,gif,png
(2)允許使用"/"做整體對映
-->
<mvc:default-servlet-handler/>
<!-- 3.配置jsp 顯示ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 4.掃描web相關的bean -->
<!--<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!– 注入sqlSessionFactory –>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!– 給出需要掃描bll包 –>
<property name="basePackage" value="com.wzy.bll"/>
</bean>-->
<context:component-scan base-package="com.wzy.bll"></context:component-scan>
</beans>
jdbc.properties:
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost/wzy?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=Wzy,525110
log4j.properties:
log4j.rootLogger=ERROR, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
mybatis-config.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 配置全域性屬性 -->
<settings>
<!-- 使用jdbc的getGeneratedKeys獲取資料庫自增主鍵值 -->
<setting name="useGeneratedKeys" value="true" />
<!-- 使用列別名替換列名 預設:true -->
<setting name="useColumnLabel" value="true" />
<!-- 開啟駝峰命名轉換:Table{create_time} -> Entity{createTime} -->
<setting name="mapUnderscoreToCamelCase" value="true" />
</settings>
</configuration>
注意!!!:在spring-dal.xml裡面,下面這一段會報錯:
<!-- 注入資料庫連線池 --> <property name="dataSource" ref="dataSource" />
原因是因為web.xml裡面還沒有配置springmvc需要載入的配置檔案,所以這裡預設是找不到這個ref的。將web.xml修改如下:
web.xml:
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1" metadata-complete="true">
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置springMVC需要載入的配置檔案
spring-dao.xml,spring-service.xml,spring-mvc.xml
Mybatis - > spring -> springmvc
-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</init-param>
</servlet>
<!-- 載入spring的xml配置檔案到 spring的上下文容器中 -->
<!-- <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</context-param>-->
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<!-- 預設匹配所有的請求 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
好了,到這裡我們目前所需要的配置檔案已經全部集齊了,如果沒有其他的報錯,現在開始就可以寫我們的頁面了。頁面程式碼如下(頁面寫的很簡陋,主要就是體現一下功能):
addPaper.jsp:
<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2018/4/7
Time: 16:45
To change this template use File | Settings | File Templates.
--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<html>
<head>
<title>新增論文</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
基於SSM框架的管理系統:簡單實現增、刪、改、查。
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增論文</small>
</h1>
</div>
</div>
</div>
<form action="" name="userForm">
論文名稱:<input type="text" name="paperName"><br><br><br>
論文數量:<input type="text" name="paperNum"><br><br><br>
論文詳情:<input type="text" name="paperDetail"><br><br><br>
<input type="button" value="新增" onclick="addPaper()">
</form>
<script type="text/javascript">
function addPaper() {
var form = document.forms[0];
form.action = "<%=basePath %>paper/addPaper";
form.method = "post";
form.submit();
}
</script>
</div>
</body>
</html>
allPaper.jsp:
<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2018/4/6
Time: 16:57
To change this template use File | Settings | File Templates.
--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<% String appPath = request.getContextPath(); %>
<html>
<head>
<title>Paper列表</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<%--<div>
<strong> welcome,${sessionScope.user.username}! </strong>
</div>--%>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
基於SSM框架的管理系統:簡單實現增、刪、改、查。
</h1>
<%-- session被訪問的次數為:${count}--%>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>論文列表 —— 顯示所有論文</small>
</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${path}/paper/toAddPaper">新增</a>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>論文編號</th>
<th>論文名字</th>
<th>論文數量</th>
<th>論文詳情</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:forEach var="paper" items="${requestScope.get('list')}" varStatus="status">
<tr>
<td>${paper.paperId}</td>
<td>${paper.paperName}</td>
<td>${paper.paperNum}</td>
<td>${paper.paperDetail}</td>
<td>
<a href="${path}/paper/toUpdatePaper?id=${paper.paperId}">更改</a> |
<a href="<%=appPath%>/paper/del/${paper.paperId}">刪除</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
login.jsp:
<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2018/4/7
Time: 16:45
To change this template use File | Settings | File Templates.
--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>使用者登入</title>
</head>
<body>
<form action="" name="userLoginForm">
<table>
<tr>
<td>使用者名稱:</td>
<td><input id="username" name="userName" type="text"></td>
</tr>
<tr>
<td>密碼:</td>
<td><input id="password" name="passWord" type="password"></td>
</tr>
</table>
<input type="submit" value="登入" onclick="userSubmit()">
</form>
<a href="${path }/user/toUserRegister">點選進入註冊頁面</a>
<script type="text/javascript">
function userSubmit(){
var form = document.forms[0];
form.action = "<%=basePath %>user/userSubmit";
form.method = "post";
form.submit();
}
</script>
</body>
</html>
updatePaper.jsp:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<html>
<head>
<title>修改論文</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
基於SSM框架的管理系統:簡單實現增、刪、改、查。
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>修改論文</small>
</h1>
</div>
</div>
</div>
<form action="" name="userForm">
<input type="hidden" name="paperId" value="${paper.paperId}"/>
論文名稱:<input type="text" name="paperName" value="${paper.paperName}"/>
論文數量:<input type="text" name="paperNum" value="${paper.paperNum}"/>
論文詳情:<input type="text" name="paperDetail" value="${paper.paperDetail }"/>
<input type="button" value="提交" onclick="updatePaper()"/>
</form>
<script type="text/javascript">
function updatePaper() {
var form = document.forms[0];
form.action = "<%=basePath %>paper/updatePaper";
form.method = "post";
form.submit();
}
</script>
</div>
</body>
</html>
userRegister.jsp:
<%--
Created by IntelliJ IDEA.
User: lenovo
Date: 2018/4/7
Time: 16:45
To change this template use File | Settings | File Templates.
--%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<html>
<head>
<title>新增論文</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
請輸入您想建立的使用者名稱和密碼
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>建立使用者</small>
</h1>
</div>
</div>
</div>
<form action="" name="registerForm">
<table>
<tr>
<td>使用者id:</td>
<td><input id="id" name="id" type="text"></td>
</tr>
<tr>
<td>使用者名稱:</td>
<td><input id="name" name="name" type="text"></td>
</tr>
<tr>
<td>登入名:</td>
<td><input id="username" name="userName" type="text"></td>
</tr>
<tr>
<td>密碼:</td>
<td><input id="password" name="passWord" type="password"></td>
</tr>
</table>
<input type="button" value="建立" onclick="addUser()">
</form>
<script type="text/javascript">
function addUser() {
var form = document.forms[0];
form.action = "<%=basePath %>user/addUser";
form.method = "post";
form.submit();
}
</script>
</div>
</body>
</html>
index.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" %>
<%
pageContext.setAttribute("path", request.getContextPath());
%>
<!DOCTYPE HTML>
<html>
<head>
<title>首頁</title>
<style type="text/css">
a {
text-decoration: none;
color: black;
font-size: 18px;
}
h3 {
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 4px;
}
</style>
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
基於SSM框架的管理系統:簡單實現增、刪、改、查。
</h1>
</div>
</div>
</div>
</div>
<br><br>
<h3>
<a href="${path }/user/toLogin">點選進入登陸頁面</a>
</h3>
</body>
</html>
寫完之後就可以開始部署在tomcat上跑啦!
部署tomcat:
流程如下:
選擇後點擊應用,然後點選deployment,如下圖
選擇war exploded, 這裡我們的wzy.web的pom檔案裡面早就把packageing設定為war了。
再直接點選應用,然後切回server
再點選應用,然後點選OK,這樣,我們的程式就部署在tomcat上面了。
接下來咱們只要執行,就可以順利跑起來啦。
感悟
剛開始接觸這樣一個多模組的框架,最大的問題出現在各個模組的關係沒有理清楚,導致邏輯混亂,pom檔案之間的依賴漏加,再加上自己本身對於ssm的理解不夠深入,促使自己沒有辦法及時準確的找到問題所在,一開始有點急,後來慢慢沉下心捋了幾遍,才發現問題所在,期間也多虧了網上各位大神的一些分享給了我一些方向和靈感!分享萬歲!!!這也是我寫這篇文章的原因,希望有朋友在初涉及這一塊的