Java如何整合模板彻底解决ssm配置问题(java,ssm,开发技术)

Spring+SpringMVC+Mybatis

环境配置
IDEA
MySQL 5.7
Tomcat 8.5
Maven 3.6
创建数据库

CREATEDATABASE`ssmbuild`;USE`ssmbuild`;DROPTABLEIFEXISTS`books`;CREATETABLE`books`(`bookID`INT(10)NOTNULLAUTO_INCREMENTCOMMENT'书id',`bookName`VARCHAR(100)NOTNULLCOMMENT'书名',`bookCounts`INT(11)NOTNULLCOMMENT'数量',`detail`VARCHAR(200)NOTNULLCOMMENT'描述',KEY`bookID`(`bookID`))ENGINE=INNODBDEFAULTCHARSET=utf8INSERTINTO`books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES(1,'Java',1,'从入门到放弃'),(2,'MySQL',10,'从删库到跑路'),(3,'Linux',5,'从进门到进牢');

编写数据库对应的实体类com.longdi.pojo.Books
导入lombok在pom.xml中

packagecom.longdi.pojo;importlombok.AllArgsConstructor;importlombok.Data;importlombok.NoArgsConstructor;/***@author:龍弟*@description*@date:2021/9/2720:22*/@Data@AllArgsConstructor@NoArgsConstructorpublicclassBooks{privateintbookID;privateStringbookName;privateintbookCounts;privateStringdetail;}

导入相关的pom依赖

<dependencies><!--Junit--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><!--数据库驱动--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><!--数据库连接池--><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>0.9.5.2</version></dependency><!--Servlet-JSP--><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.2</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!--Mybatis--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.2</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>2.0.2</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.4</version></dependency><!--Spring--><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.1.9.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.1.9.RELEASE</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.16</version><scope>compile</scope></dependency></dependencies>

资源过滤设置

<build><resources><resource><directory>src/main/java</directory><includes><include>**/*.properties</include><include>**/*.xml</include></includes><filtering>false</filtering></resource><resource><directory>src/main/resources</directory><includes><include>**/*.properties</include><include>**/*.xml</include></includes><filtering>false</filtering></resource></resources></build>

Mybatis层编写
创建mybatis-config.xml

<?xmlversion="1.0"encoding="UTF-8"?><!DOCTYPEconfigurationPUBLIC"-//mybatis.org//DTDConfig3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration><settings><settingname="logImpl"value="STDOUT_LOGGING"/></settings><typeAliases><packagename="com.longdi.pojo"/></typeAliases><mappers><mapperclass="com.longdi.dao.BookMapper"/></mappers></configuration>

jdbc.driver=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8jdbc.username=rootjdbc.password=123456

编写Dao层的Mapper接口

packagecom.longdi.dao;importcom.longdi.pojo.Books;importorg.apache.ibatis.annotations.Param;importjava.util.List;/***@author:龍弟*@description*@date:2021/9/2720:32*/publicinterfaceBookMapper{//增加一本书intaddBook(Booksbooks);//删除一本书intdeleteBookById(@Param("bookId")intid);//更新一本书intupdateBook(Booksbooks);//查询一本书BooksqueryBookById(@Param("bookId")intid);//查询全部的书List<Books>queryAllBook();BooksqueryBookByName(@Param("bookName")StringbookName);}

编写接口对应的 Mapper.xml 文件。需要导入MyBatis的包；

<?xmlversion="1.0"encoding="UTF-8"?><!DOCTYPEmapperPUBLIC"-//mybatis.org//DTDConfig3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mappernamespace="com.longdi.dao.BookMapper"><insertid="addBook"parameterType="Books">insertintossmbuild.books(bookName,bookCounts,detail)values(#{bookName},#{bookCounts},#{detail});</insert><deleteid="deleteBookById"parameterType="int">deletefromssmbuild.bookswherebookID=#{bookId}</delete><updateid="updateBook"parameterType="Books">updatessmbuild.bookssetbookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}wherebookID=#{bookID};</update><selectid="queryBookById"resultType="Books">select*fromssmbuild.bookswherebookID=#{bookId}</select><selectid="queryAllBook"resultType="Books">select*fromssmbuild.books</select><selectid="queryBookByName"resultType="Books">select*fromssmbuild.bookswherebookName=#{bookName}</select></mapper>

编写Service层的接口

packagecom.longdi.service;importcom.longdi.pojo.Books;importjava.util.List;/***@author:龍弟*@description*@date:2021/9/2721:03*/publicinterfaceBookService{//增加一本书intaddBook(Booksbooks);//删除一本书intdeleteBookById(intid);//更新一本书intupdateBook(Booksbooks);//查询一本书BooksqueryBookById(intid);//查询全部的书List<Books>queryAllBook();BooksqueryBookByName(StringbookName);}

Service层的实现类

packagecom.longdi.service;importcom.longdi.dao.BookMapper;importcom.longdi.pojo.Books;importorg.springframework.stereotype.Service;importjava.util.List;/***@author:龍弟*@description*@date:2021/9/2721:05*/publicclassBookServiceImplimplementsBookService{privateBookMapperbookMapper;publicvoidsetBookMapper(BookMapperbookMapper){this.bookMapper=bookMapper;}publicintaddBook(Booksbooks){returnbookMapper.addBook(books);}publicintdeleteBookById(intid){returnbookMapper.deleteBookById(id);}publicintupdateBook(Booksbooks){System.out.println("BookServiceImpl:updateBook=>"+books);returnbookMapper.updateBook(books);}publicBooksqueryBookById(intid){returnbookMapper.queryBookById(id);}publicList<Books>queryAllBook(){returnbookMapper.queryAllBook();}publicBooksqueryBookByName(StringbookName){returnbookMapper.queryBookByName(bookName);}}

Spring整合Mybatis spring-dao.xml
以下为spring层

<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttps://www.springframework.org/schema/context/spring-context.xsd"><!--配置整合mybatis--><!--1.关联数据库文件--><context:property-placeholderlocation="classpath:database.properties"/><!--2.数据库连接池--><!--数据库连接池dbcp半自动化操作不能自动连接c3p0自动化操作（自动的加载配置文件并且设置到对象里面）--><beanid="dataSource"class="com.mchange.v2.c3p0.ComboPooledDataSource"><!--配置连接池属性--><propertyname="driverClass"value="${jdbc.driver}"/><propertyname="jdbcUrl"value="${jdbc.url}"/><propertyname="user"value="${jdbc.username}"/><propertyname="password"value="${jdbc.password}"/><!--c3p0连接池的私有属性--><propertyname="maxPoolSize"value="30"/><propertyname="minPoolSize"value="10"/><!--关闭连接后不自动commit--><propertyname="autoCommitOnClose"value="false"/><!--获取连接超时时间--><propertyname="checkoutTimeout"value="10000"/><!--当获取连接失败重试次数--><propertyname="acquireRetryAttempts"value="2"/></bean><!--3.配置SqlSessionFactory对象--><beanid="sqlSessionFactory"class="org.mybatis.spring.SqlSessionFactoryBean"><!--注入数据库连接池--><propertyname="dataSource"ref="dataSource"/><!--配置MyBaties全局配置文件:mybatis-config.xml--><propertyname="configLocation"value="classpath:mybatis-config.xml"/></bean><!--4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中--><beanclass="org.mybatis.spring.mapper.MapperScannerConfigurer"><!--注入sqlSessionFactory--><propertyname="sqlSessionFactoryBeanName"value="sqlSessionFactory"/><!--给出需要扫描Dao接口包--><propertyname="basePackage"value="com.longdi.dao"/></bean></beans>

spring-service.xml文件

<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsd"><!--扫描service相关的bean--><context:component-scanbase-package="com.longdi.service"/><!--BookServiceImpl注入到IOC容器中--><beanid="BookServiceImpl"class="com.longdi.service.BookServiceImpl"><propertyname="bookMapper"ref="bookMapper"/></bean><!--配置事务管理器--><beanid="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!--注入数据库连接池--><propertyname="dataSource"ref="dataSource"/></bean><!--aop事物支持--><!--结合aop实现事物的织入--><!--配置事物的通知--><tx:adviceid="txAdvice"transaction-manager="transactionManager"><tx:attributes><tx:methodname="*"propagation="REQUIRED"/></tx:attributes></tx:advice><!--配置事物切入--><aop:config><aop:pointcutid="txPointCut"expression="execution(*com.longdi.dao.*.*(..))"/><aop:advisoradvice-ref="txAdvice"pointcut-ref="txPointCut"/></aop:config></beans>

以下为SpringMVC层
配置web.xml

<?xmlversion="1.0"encoding="UTF-8"?><web-appxmlns="http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaeehttp://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"version="4.0"><!--DispatcherServlet--><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><!--一定要注意:我们这里加载的是总的配置文件，之前被这里坑了！--><param-value>classpath:applicationContext.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!--encodingFilter--><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><!--Session过期时间--><session-config><session-timeout>15</session-timeout></session-config></web-app>

spring-mvc.xml

<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/mvchttps://www.springframework.org/schema/mvc/spring-mvc.xsd"><!--配置SpringMVC--><!--1.开启SpringMVC注解驱动--><mvc:annotation-driven/><!--2.静态资源默认servlet配置--><mvc:default-servlet-handler/><!--3.配置jsp显示ViewResolver视图解析器--><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><propertyname="viewClass"value="org.springframework.web.servlet.view.JstlView"/><propertyname="prefix"value="/WEB-INF/jsp/"/><propertyname="suffix"value=".jsp"/></bean><!--4.扫描web相关的bean--><context:component-scanbase-package="com.longdi.controller"/></beans>

Spring配置整合文件，创建applicationContext.xml

<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd"><importresource="spring-dao.xml"/><importresource="spring-service.xml"/><importresource="spring-mvc.xml"/></beans>

以上为SSM的环境配置，下面编写Controller层和视图层，实现书籍的CRUD功能

controller层 书籍的增删改查功能

importjava.util.ArrayList;importjava.util.List;/***@author:龍弟*@description*@date:2021/9/2722:47*/@Controller@RequestMapping("/book")publicclassBookController{@Autowired@Qualifier("BookServiceImpl")privateBookServicebookService;@RequestMapping("/allBook")publicStringlist(Modelmodel){List<Books>list=bookService.queryAllBook();model.addAttribute("list",list);return"allBook";}//跳转到增加书籍页面@RequestMapping("/toAddBook")publicStringtoAddPaper(){return"addBook";}//添加书籍的请求@RequestMapping("/addBook")publicStringaddBook(Booksbooks){System.out.println("addBook=>"+books);bookService.addBook(books);return"redirect:/book/allBook";}//跳转到修改页面@RequestMapping("toUpdateBook")publicStringtoUpdatePaper(intid,Modelmodel){Booksbooks=bookService.queryBookById(id);model.addAttribute("book",books);return"updateBook";}//修改书籍@RequestMapping("updateBook")publicStringupdateBook(Booksbooks){System.out.println("updateBook=>"+books);inti=bookService.updateBook(books);if(i>0){System.out.println("添加books成功"+books);}return"redirect:/book/allBook";}//删除书籍@RequestMapping("/deleteBook/{bookId}")publicStringdeleBook(@PathVariable("bookId")intid){bookService.deleteBookById(id);return"redirect:/book/allBook";}//查询书籍@RequestMapping("/queryBook")publicStringqueryBook(StringqueryBookName,Modelmodel){Booksbooks=bookService.queryBookByName(queryBookName);System.err.println("queryBook=>"+books);List<Books>list=newArrayList<Books>();list.add(books);if(books==null){list=bookService.queryAllBook();model.addAttribute("error","未查到");}model.addAttribute("list",list);return"allBook";}}

编写首页index.jsp

<%@pagelanguage="java"contentType="text/html;charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPEHTML><html><head><title>首页</title><style>a{text-decoration:none;color:black;font-size:18px;}h4{width:180px;height:38px;margin:100pxauto;text-align:center;line-height:38px;background:deepskyblue;border-radius:4px;}</style></head><h4><ahref="${pageContext.request.contextPath}/book/allBook"rel="externalnofollow"rel="externalnofollow">进入到书籍页面</a></h4></body></html>

编写书籍列表页面allBook.jsp

<%@taglibprefix="c"uri="http://java.sun.com/jsp/jstl/core"%><%@pagecontentType="text/html;charset=UTF-8"language="java"%><html><head><title>书籍列表</title><metaname="viewport"content="width=device-width,initial-scale=1.0"><!--引入Bootstrap--><linkhref="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"rel="externalnofollow"rel="externalnofollow"rel="externalnofollow"rel="stylesheet"></head><body><divclass="container"><divclass="rowclearfix"><divclass="col-md-12column"><divclass="page-header"><h2><small>书籍列表——显示所有书籍</small></h2></div></div></div><divclass="row"><divclass="col-md-4column"><aclass="btnbtn-primary"href="${pageContext.request.contextPath}/book/toAddBook"rel="externalnofollow">新增书籍</a><aclass="btnbtn-primary"href="${pageContext.request.contextPath}/book/allBook"rel="externalnofollow"rel="externalnofollow">显示全部书籍</a></div><divclass="col-md-4column"><divclass="col-md-8column"></div><%--查询书籍--%><formclass="form-inline"action="${pageContext.request.contextPath}/book/queryBook"method="post"><span>${error}</span><inputtype="text"name="queryBookName"class="form-control"placeholder="请输入要查询的书籍名称"><inputtype="submit"value="查询"class="btnbtn-primary"/></form></div></div><divclass="rowclearfix"><divclass="col-md-12column"><tableclass="tabletable-hovertable-striped"><thead><tr><th>书籍编号</th><th>书籍名字</th><th>书籍数量</th><th>书籍详情</th><th>操作</th></tr></thead><tbody><c:forEachvar="book"items="${requestScope.get('list')}"><tr><td>${book.getBookID()}</td><td>${book.getBookName()}</td><td>${book.getBookCounts()}</td><td>${book.getDetail()}</td><td><ahref="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}"rel="externalnofollow">更改</a>|<ahref="${pageContext.request.contextPath}/book/deleteBook/${book.getBookID()}"rel="externalnofollow">删除</a></td></tr></c:forEach></tbody></table></div></div></div>

添加书籍页面 addBook.jsp

<%@taglibprefix="c"uri="http://java.sun.com/jsp/jstl/core"%><%@pagecontentType="text/html;charset=UTF-8"language="java"%><html><head><title>新增书籍</title><metaname="viewport"content="width=device-width,initial-scale=1.0"><!--引入Bootstrap--><linkhref="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"rel="externalnofollow"rel="externalnofollow"rel="externalnofollow"rel="stylesheet"></head><body><divclass="container"><divclass="rowclearfix"><divclass="col-md-12column"><divclass="page-header"><h2><small>新增书籍</small></h2></div></div></div><formaction="${pageContext.request.contextPath}/book/addBook"method="post">书籍名称：<inputtype="text"name="bookName"><br><br><br>书籍数量：<inputtype="text"name="bookCounts"><br><br><br>书籍详情：<inputtype="text"name="detail"><br><br><br><inputtype="submit"value="添加"></form></div>

修改书籍页面 updateBook.jsp

<%@taglibprefix="c"uri="http://java.sun.com/jsp/jstl/core"%><%@pagecontentType="text/html;charset=UTF-8"language="java"%><html><head><title>修改信息</title><metaname="viewport"content="width=device-width,initial-scale=1.0"><!--引入Bootstrap--><linkhref="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css"rel="externalnofollow"rel="externalnofollow"rel="externalnofollow"rel="stylesheet"></head><body><divclass="container"><divclass="rowclearfix"><divclass="col-md-12column"><divclass="page-header"><h2><small>修改信息</small></h2></div></div></div><formaction="${pageContext.request.contextPath}/book/updateBook"method="post"><inputtype="hidden"name="bookID"value="${book.getBookID()}"/>书籍名称：<inputtype="text"name="bookName"value="${book.getBookName()}"/>书籍数量：<inputtype="text"name="bookCounts"value="${book.getBookCounts()}"/>书籍详情：<inputtype="text"name="detail"value="${book.getDetail()}"/><inputtype="submit"value="提交"/></form></div>

项目部署到tomcat中

项目结构图