SSM (SSM 框架集)
SSM(Spring+SpringMVC+MyBatis)框架集由Spring、SpringMVC、MyBatis三個開源框架整合而成,常作爲數據源較簡單的web項目的框架。
其中spring是一個輕量級的控制反轉(IoC)和麪向切面(AOP)的容器框架。
SpringMVC分離了控制器、模型對象、分派器以及處理程序對象的角色,這種分離讓它們更容易進行定製。
MyBatis是一個支持普通SQL查詢,存儲過程和高級映射的優秀持久層框架。
0、系統環境
1)Windows 10 企業版
2)JDK 1.8.0_131
3)Eclipse Java EE IDE for Web Developers Version: Neon.3 Release (4.6.3)
4)Tomcat 8.5
1、maven下載及配置
maven的下載地址:http://maven.apache.org/download.cgi
下載後解壓放在d:\Java路徑下
在環境變量中,新增系統變量名:MAVEN_HOME,變量值:D:\Java\maven
在Path中追加:%MAVEN_HOME%\bin;
在命令行窗口中輸入:mvn –v,如果看見下圖則說明maven安裝配置完畢
2.maven倉庫的設置
maven倉庫默認位置在系統用戶目錄下的.m2目錄中,類似下圖
因爲衆所周知的原因,直接訪問maven公共倉庫的速度比較慢,所以推薦使用阿里的maven倉庫鏡像。編輯setting.xml文件,在mirrors節點下,新增如下內容,這樣從倉庫中下載jar包速度上會快很多。
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<mirror> <id>nexus-aliyun</id> <mirrorOf>*</mirrorOf> <name>Nexus aliyun</name> <url>http: //maven.aliyun.com/nexus/content/groups/public</url> </mirror> |
3、eclipse整合maven
設置eclipse自帶maven整合工具,在Preferences中找到Maven節點,觀察User Settings項的設置是否正確
點擊Installations節點,添加maven runtime
4、創建maven項目時設置JDK
問題描述:eclipse創建maven項目時,顯示的JDK默認版本爲1.5,實際使用的JDK爲1.8,如何修改?
解決方案:找到本機maven倉庫存放位置,比如:${user.home}/.m2/路徑,編輯settings.xml文件,在profiles節點下配置
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< profile > < id >jdk-1.8</ id > < activation > < activeByDefault >true</ activeByDefault > < jdk >1.8</ jdk > </ activation > < properties > < maven.compiler.source >1.8</ maven.compiler.source > < maven.compiler.target >1.8</ maven.compiler.target > < maven.compiler.compilerVersion >1.8</ maven.compiler.compilerVersion > </ properties > </ profile > |
5、使用maven創建SSM項目
1)選擇Maven Project
2)點擊Next,選擇默認工作空間位置
3)選擇web類型
4)填寫GroupID、ArtifactID
Group ID:相當於一個組織
Artifact ID:相當於這個組織下的一個具體項目
Packege:根據Group ID和Artifact ID生成一個默認的名稱
5)創建出的maven項目如下圖
6)問題描述:提示錯誤:
在eclipse中設置Server爲Tomcat,注意JRE設置爲安裝的JDK的jre
在工程上右鍵,查看工程屬性,找到Java Build Path,添加Server Runtime爲Tomcat
點擊Finish後,項目工程變爲下圖
7)在項目上右鍵,查看項目信息
默認的Dynamic Web Module爲2.3,使用Tomcat 8.5,需要修改爲3.1
修改方法:
① maven工程所在目錄下org.eclipse.wst.common.project.facet.core.xml
編輯內容,如下所示
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<?xml version= "1.0" encoding= "UTF-8" ?> <faceted-project> <fixed facet= "wst.jsdt.web" /> <installed facet= "java" version= "1.8" /> <installed facet= "jst.web" version= "2.3" /> <installed facet= "wst.jsdt.web" version= "1.0" /> </faceted-project> |
改爲
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<?xml version= "1.0" encoding= "UTF-8" ?><faceted-project> <fixed facet= "wst.jsdt.web" /> <installed facet= "java" version= "1.8" /> <installed facet= "jst.web" version= "3.1" /> <installed facet= "wst.jsdt.web" version= "1.0" /> </faceted-project> |
② maven工程下的web.xml文件修改爲
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<?xml version= "1.0" encoding= "UTF-8" ?><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" > </web-app> |
③ pom.xml文件中修改build節點,添加如下內容
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<plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source> 1.8 </source> <target> 1.8 </target> </configuration> </plugin> </plugins> |
④ 修改後,在項目上右鍵,找到Maven屬性下的Update Project,點擊之
⑤ 選擇該項目進行更新,如果怕不能強制更新,可以勾選Force Update of Snapshots/Releases
⑥ 點擊OK後更新maven項目,再觀察項目屬性,Module已經變爲3.1
6、下載ssm框架所需jar包
修改pom.xml內容爲:
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<project xmlns= "http://maven.apache.org/POM/4.0.0" xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance" <modelVersion> 4.0 . 0 </modelVersion> <groupId>cn.temptation</groupId> <artifactId>ssm</artifactId> <packaging>war</packaging> <version> 0.0 . 1 -SNAPSHOT</version> <name>ssm Maven Webapp</name> <url>http: //maven.apache.org</url> <properties> <!-- Spring版本號 --> <spring.version> 4.3 . 8 .RELEASE</spring.version> </properties> <dependencies> <!-- Spring相關包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <!-- AOP相關包 --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version> 1.8 . 0 </version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version> 1.8 . 0 </version> </dependency> <!-- MyBatis相關包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version> 3.3 . 0 </version> </dependency> <!-- MySQL相關包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version> 5.1 . 26 </version> </dependency> <!-- 數據庫連接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version> 1.0 . 20 </version> </dependency> <!-- Spring集成MyBatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version> 1.2 . 3 </version> </dependency> <!-- JSP標準標籤庫 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version> 1.2 </version> </dependency> <!-- 日誌相關包 --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version> 1.2 . 17 </version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version> 1.7 . 21 </version> </dependency> <!-- 單元測試相關包 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version> 3.8 . 1 </version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>ssm</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source> 1.8 </source> <target> 1.8 </target> </configuration> </plugin> </plugins> </build> </project> |
保存後,可以看到相關jar包被下載至本地倉庫
7、完善項目結構
因爲服務端maven項目的標準結構有四個子包:src/main/java、src/main/resources、src/test/java、src/test/resources,這裏缺少了src/test/resources,所以手動補上。
在項目中新建Source Folder
創建src/test/resources目錄後,工程如下圖所示
右鍵查看項目屬性,點擊Deployment Assembly,移除test和target
移除後如下圖
8、創建項目用的配置文件
創建log4j.properties文件,內容如下:
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#USE THIS SETTING FOR OUTPUT MYBATIS`s SQL ON THE CONSOLE log4j.rootLogger=DEBUG, Console #Console log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n log4j.logger.java.sql.ResultSet=INFO log4j.logger.org.apache=INFO log4j.logger.java.sql.Connection=DEBUG log4j.logger.java.sql.Statement=DEBUG log4j.logger.java.sql.PreparedStatement=DEBUG |
創建mybatis-config.xml文件,內容如下:
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<?xml version= "1.0" encoding= "UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" <configuration> <!-- 設置別名 --> <typeAliases> < package name= "cn.temptation.domain" /> </typeAliases> </configuration> |
創建spring-mvc.xml文件,內容如下:
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<?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 http: //www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 啓動自動掃描 --> <context:component-scan base- package = "cn.temptation.*" /> <!-- 註冊MVC註解驅動 --> <mvc:annotation-driven /> <!-- 靜態資源可訪問的設置方式 --> <mvc: default -servlet-handler /> <!-- 配置視圖解析器,可以顯式設置,也可以不設置,不設置會依據SpringMVC的默認設置 --> <bean id= "viewResolver" class = "org.springframework.web.servlet.view.InternalResourceViewResolver" > <property name= "prefix" value= "/" /> <property name= "suffix" value= ".jsp" /> </bean> </beans> |
創建spring-mybatis.xml文件,內容如下:
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<?xml version= "1.0" encoding= "UTF-8" ?> <beans xmlns= "http://www.springframework.org/schema/beans" xsi:schemaLocation=" http: //www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <!-- 定義數據源Bean --> <!-- Druid --> <bean id= "dataSource" class = "com.alibaba.druid.pool.DruidDataSource" > <property name= "username" value= "root" /> <property name= "password" value= "sa" /> </bean> <!-- 註冊SqlSessionFactoryBean --> <bean id= "sqlSessionFactory" class = "org.mybatis.spring.SqlSessionFactoryBean" > <property name= "dataSource" ref= "dataSource" /> <!-- 自動掃描mappers.xml文件 --> <property name= "mapperLocations" value= "classpath:cn/temptation/dao/*.xml" /> <property name= "configLocation" value= "classpath:mybatis-config.xml" ></property> </bean> <!-- DAO接口所在包名,Spring會自動查找其下的類 --> <bean class = "org.mybatis.spring.mapper.MapperScannerConfigurer" > <property name= "basePackage" value= "cn.temptation.dao" /> <property name= "sqlSessionFactoryBeanName" value= "sqlSessionFactory" /> </bean> </beans> |
創建spring-tx.xml文件,內容如下:
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<?xml version= "1.0" encoding= "UTF-8" ?> <beans xmlns= "http://www.springframework.org/schema/beans" 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 <!-- 開啓AOP註解掃描 --> <aop:aspectj-autoproxy proxy-target- class = "true" /> <!-- 事務管理器,依賴於數據源 --> <bean id= "txManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" > <property name= "dataSource" ref= "dataSource" /> </bean> <!-- 編寫通知:對事務進行增強(通知),需要編寫對切入點和具體執行事務細節 --> <tx:advice id= "txAdvice" transaction-manager= "txManager" > <tx:attributes> <!-- 爲切入點方法添加事務詳情 name:方法名,*表示任意方法名稱 propagation:設置傳播行爲 isolation:設置隔離級別 read-only:是否只讀 --> <tx:method name= "add*" propagation= "REQUIRED" isolation= "DEFAULT" read-only= "false" rollback- for = "Exception" /> <tx:method name= "delete*" propagation= "REQUIRED" isolation= "DEFAULT" read-only= "false" rollback- for = "Exception" /> <tx:method name= "update*" propagation= "REQUIRED" isolation= "DEFAULT" read-only= "false" rollback- for = "Exception" /> </tx:attributes> </tx:advice> <!-- 設置AOP,讓Spring自動對目標生成代理,需要使用AspectJ表達式 --> <aop:config proxy-target- class = "true" > <!-- 切面:整合切入點和通知 --> <aop:advisor advice-ref= "txAdvice" pointcut= "within(cn.temptation.web..*)" /> </aop:config> </beans> |
9、編寫服務端代碼
編寫User實體類,代碼如下:
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package cn.temptation.domain; /** * 用戶信息 */ public class User { // 成員變量 private Integer userid; private String username; private String password; // 構造函數 public User() { super (); } public User(Integer userid, String username, String password) { super (); this .userid = userid; this .username = username; this .password = password; } // 成員方法 public Integer getUserid() { return userid; } public void setUserid(Integer userid) { this .userid = userid; } 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; } } |
編寫UserController控制器,代碼如下:
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package cn.temptation.web; import javax.annotation.Resource; import javax.servlet.http.HttpSession; 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 cn.temptation.dao.UserDao; import cn.temptation.domain.User; /** * 用戶控制器 */ @Controller @RequestMapping (value = "/user" ) public class UserController { @Resource private UserDao userDao; @RequestMapping ( "/view" ) public String view() { return "main/login" ; } @RequestMapping ( "/indexview" ) public String index() { return "main/index" ; } @RequestMapping (value = "/login" , method = RequestMethod.POST) public ModelAndView login(User model, HttpSession session) { User user = userDao.findByUsername(model.getUsername()); if (user == null || !user.getPassword().equals(model.getPassword())) { return new ModelAndView( "redirect:/login.jsp" ); } else { session.setAttribute( "user" , user); ModelAndView mav = new ModelAndView(); mav.setViewName( "index" ); return mav; } } } |
編寫UserDao數據訪問層接口,代碼如下:
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package cn.temptation.dao; import cn.temptation.domain.User; public interface UserDao { public abstract User findByUsername(String username); } |
編寫UserMapper.xml數據訪問層映射文件,代碼如下:
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<?xml version= "1.0" encoding= "UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" <mapper namespace= "cn.temptation.dao.UserDao" > <select id= "findByUsername" parameterType= "string" resultType= "User" > SELECT * FROM userinfo WHERE username=#{username} </select> </mapper> |
10、編寫客戶端代碼
編寫login.jsp登錄頁,代碼如下:
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<%@ 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>登錄</title> </head> <body> <form action= "user/login" method= "post" > <label>賬號:</label> <input type= "text" id= "txtUsername" name= "username" placeholder= "請輸入賬號" /><br/> <label>密碼:</label> <input type= "password" id= "txtPassword" name= "password" placeholder= "請輸入密碼" /><br/> <input type= "submit" value= "提交" /> <input type= "reset" value= "重置" /> </form> </body> </html> |
編寫index.jsp主頁,代碼如下:
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<%@ 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>主頁</title> </head> <body> <h3>歡迎,${user.username }</h3> </body> </html> |
11、使用maven構建項目
在項目上右鍵,找到Maven屬性的Update Project,也可以Alt+F5操作
修改項目編譯路徑爲JRE系統類庫,否則後續操作出錯
項目上右鍵,找到Run As屬性,找到Maven install
點擊執行,結果如下說明構建成功
該文章完全是轉載的,目的是爲了記錄下來,下面是原文地址。
原文地址:https://www.jb51.net/article/127829.htm