SpringMVC Spring Mybatis整合篇

1、创建WEB项目

创建项目：（ssmbuild）步骤略........

给项目添加lib文件夹，用于存放jar包：

在WEB-INF目录下创建lib文件夹：

创建完成：运行项目时需要把jar导入到lib目录下

2、pom文件

<?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.applesnt</groupId>
<artifactId>ssmbuild</artifactId>
<version>1.0-SNAPSHOT</version> <!--1.配置jar包-->
<dependencies>
<!--Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</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> <!--Spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency> <!--spring 数据源配置-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency> <!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.10</version>
</dependency> <!--AOP的jar包-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.4</version>
</dependency> <!--jackson转换json数据-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.10.2</version>
</dependency>
</dependencies> <!--2.解决资源过滤问题-->
<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></project>


3、配置web.xml

<!--注册乱码filter-->
<filter>
<filter-name>encoding</filter-name>
<filter-class>com.applesnt.filter.GenericEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter><filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping><!--注册DispatcherServlet-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--关联一个spring配置文件:重点-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<!--启动级别-1-->
<load-on-startup>1</load-on-startup>
</servlet><!--/ 匹配所有的请求；（不包括.jsp）-->
<!--/* 匹配所有的请求；（包括.jsp）-->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping><!--session过期时间-->
<session-config>
<session-timeout>30</session-timeout>
</session-config>


4、创建spring配置文件：applicationContext.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
https://www.springframework.org/schema/beans/spring-beans.xsd"></beans>


5、创建解决乱码的fileter

com\applesnt\filter\GenericEncodingFilter.java

package com.applesnt.filter;import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;public class GenericEncodingFilter implements Filter {
public void init(FilterConfig filterConfig) throws ServletException { } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { //处理response的字符编码
HttpServletResponse myResponse=(HttpServletResponse) response;
myResponse.setContentType("text/html;charset=UTF-8"); // 转型为与协议相关对象
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
// 对request包装增强
HttpServletRequest myrequest = new MyRequest(httpServletRequest);
chain.doFilter(myrequest, response); } public void destroy() { } //自定义request对象，HttpServletRequest的包装类
class MyRequest extends HttpServletRequestWrapper { private HttpServletRequest request;
//是否编码的标记
private boolean hasEncode; //定义一个可以传入HttpServletRequest对象的构造函数，以便对其进行装饰
public MyRequest(HttpServletRequest request) {
super(request);// super必须写
this.request = request;
} // 对需要增强方法 进行覆盖
@Override
public Map getParameterMap() {
// 先获得请求方式
String method = request.getMethod();
if (method.equalsIgnoreCase("post")) {
// post请求
try {
// 处理post乱码
request.setCharacterEncoding("utf-8");
return request.getParameterMap();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else if (method.equalsIgnoreCase("get")) {
// get请求
Map<String, String[]> parameterMap = request.getParameterMap();
if (!hasEncode) { // 确保get手动编码逻辑只运行一次
for (String parameterName : parameterMap.keySet()) {
String[] values = parameterMap.get(parameterName);
if (values != null) {
for (int i = 0; i < values.length; i++) {
try {
// 处理get乱码
values[i] = new String(values[i]
.getBytes("ISO-8859-1"), "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
}
hasEncode = true;
}
return parameterMap;
}
return super.getParameterMap();
} //取一个值
@Override
public String getParameter(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
if (values == null) {
return null;
}
return values[0]; // 取回参数的第一个值
} //取所有值
@Override
public String[] getParameterValues(String name) {
Map<String, String[]> parameterMap = getParameterMap();
String[] values = parameterMap.get(name);
return values;
}
}
}

6、创建数据库表以及vo对象

CREATE TABLE `books` (
`bookID` int(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` varchar(100) NOT NULL COMMENT '书名',
`bookCounts` int(11) NOT NULL COMMENT '数量',
`detail` varchar(200) NOT NULL COMMENT '描述',
KEY `bookID` (`bookID`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;INSERT INTO `books` VALUES ('1', 'Java', '1', '从入门到放弃');
INSERT INTO `books` VALUES ('2', 'MySQL', '10', '从删库到跑路');
INSERT INTO `books` VALUES ('3', 'Linux', '5', '从进门到进牢');


com\applesnt\vo\Books.java

package com.applesnt.vo;import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
private int bookID;
private String bookName;
private int bookCounts;
private String detail;
}


7、创建Mapper接口

com\applesnt\mapper\BooksMapper.java

package com.applesnt.mapper;import com.applesnt.vo.Books;import java.util.List;public interface BooksMapper { /*新增一本书*/
public int addBook(Books books); /*删除一本书*/
public int deleteBook(int id); /*修改一本书*/
public int updateBook(Books books); /*查询一本书*/
public Books queryBookById(int id); /*查询所有书*/
public List<Books> queryBook();
}

8、创建mapper对应的xml

com\applesnt\mapper\BooksMapper.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.applesnt.mapper.BooksMapper"> <insert id="addBook" parameterType="Books">
insert into books(bookName,bookCounts,detail)
values (#{bookName}, #{bookCounts}, #{detail})
</insert> <delete id="deleteBook" parameterType="int">
delete from books where bookID = #{id}
</delete> <update id="updateBook" parameterType="Books">
update books set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
where bookID = #{bookID}
</update> <!--resultType：别名-->
<select id="queryBookById" resultType="books">
select * from books where bookID = #{id}
</select> <select id="queryBook" resultType="books">
select * from books
</select></mapper>


9、创建jdbc.properties数据库连接文件

resources\jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://ip:3306/my_test?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=xxxxxxxx


10、创建Mybatis主配置文件

resources\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> <settings>
<!--打印sql语句-->
<setting name="logImpl" value="STDOUT_LOGGING" />
<!-- 全局性设置懒加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 每个属性都按需加载 -->
<setting name="aggressiveLazyLoading" value="false"/>
<!-- 开启驼峰命名 -->
<setting name="mapUnderscoreToCamelCase" value="true" />
</settings> <!--开启别名-->
<typeAliases>
<package name="com.applesnt.vo" />
</typeAliases> <!--mapper文件-->
<mappers>
<mapper resource="com/applesnt/mapper/BooksMapper.xml" />
</mappers></configuration>


11、构建DAO层的spring配置文件

resources\spring-mapper.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
https://www.springframework.org/schema/beans/spring-beans.xsd"> <!--加载jdbc配置文件-->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
</list>
</property>
</bean> <!--数据源配置 数据源提供者包括：spring、c3p0、dbcp、druid-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean> <!--配置得到SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<!--绑定mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean> <!--通过MapperScannerConfigurer配置dao接口扫描包 实现动态注入到spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
<!--要扫描的dao包-->
<property name="basePackage" value="com.applesnt.mapper" />
</bean></beans>


12、创建Service接口

com\applesnt\service\BooksService.java

package com.applesnt.service;import com.applesnt.vo.Books;
import java.util.List;public interface BooksService { /*新增一本书*/
public int addBook(Books books); /*删除一本书*/
public int deleteBook(int id); /*修改一本书*/
public int updateBook(Books books); /*查询一本书*/
public Books queryBookById(int id); /*查询所有书*/
public List<Books> queryBook();
}


13、创建Service接口实现类

com\applesnt\service\impl\BooksServiceImpl.java

package com.applesnt.service.impl;import com.applesnt.mapper.BooksMapper;
import com.applesnt.service.BooksService;
import com.applesnt.vo.Books;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class BooksServiceImpl implements BooksService { @Autowired
/*通过class自动注入*/
private BooksMapper booksMapper; public void setBooksMapper(BooksMapper booksMapper) {
this.booksMapper = booksMapper;
} public int addBook(Books books) {
return booksMapper.addBook(books);
} public int deleteBook(int id) {
return booksMapper.deleteBook(id);
} public int updateBook(Books books) {
return booksMapper.updateBook(books);
} public Books queryBookById(int id) {
return booksMapper.queryBookById(id);
} public List<Books> queryBook() {
return booksMapper.queryBook();
}
}

14、构建Service层的spring配置文件

resources\spring-service.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"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd"> <!--注解版扫描包，这个包下面的注解就会生效-->
<context:component-scan base-package="com.applesnt.service" /> <!--<bean class="com.applesnt.service.impl.BooksServiceImpl">
<property name="booksMapper" ref="booksMapper"></property>
</bean>--> <!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean> <!--配置事务通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<!--给哪些方法配置事务-->
<tx:attributes>
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice> <!--配置事务切入-->
<aop:config>
<aop:pointcut id="txpoint" expression="execution(* com.applesnt.mapper.*.*(..))"></aop:pointcut>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txpoint"></aop:advisor>
</aop:config></beans>


15、创建controller

com\applesnt\controller\BooksController.java

package com.applesnt.controller;import com.applesnt.service.BooksService;
import com.applesnt.vo.Books;
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;@Controller
public class BooksController { @Autowired
/*通过class自动注入*/
private BooksService booksService; /*查询书籍列表*/
@RequestMapping("/getbooks")
public String queryBook(Model model){
List<Books> booksList = this.booksService.queryBook();
model.addAttribute("booklist",booksList);
return "books";
} /*跳转至添加书籍页面*/
@RequestMapping("/toAddBook")
public String toAddBook(){
return "addbook";
} /*添加书籍*/
@RequestMapping("/addBook")
public String addBook(Books books){
booksService.addBook(books);
return "redirect:/getbooks";/*重定向到列表页*/
} /*跳转至修改书籍页面*/
@RequestMapping("/toUpdateBook/{id}")
public String toUpdateBook(@PathVariable int id,Model model){
Books book = booksService.queryBookById(id);
model.addAttribute("book",book);
return "updatebook";
} /*修改书籍*/
@RequestMapping("/updateBook")
public String toUpdateBook(Books book){
booksService.updateBook(book);
return "redirect:/getbooks";/*重定向到列表页*/
} /*删除书籍*/
@RequestMapping("/deleteBook/{id}")
public String deleteBook(@PathVariable int id,Model model){
booksService.deleteBook(id);
return "redirect:/getbooks";/*重定向到列表页*/
}}

16、构建Controller层的spring配置文件

resources\springmvc-servlet.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
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd"> <context:component-scan base-package="com.applesnt.controller"/> <!-- 让Spring MVC不处理静态资源 -->
<mvc:default-servlet-handler /> <!--annotation-driven配置帮助我们完成处理器映射器和处理器适配器-->
<mvc:annotation-driven /> <!--视图解析器:DispatcherServlet给他的ModelAndView-->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/>
</bean></beans>


17、把SpringMVC Spring Mybatis配置文件合并

resources\applicationContext.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
https://www.springframework.org/schema/beans/spring-beans.xsd"> <import resource="spring-mapper.xml"/>
<import resource="spring-service.xml"/>
<import resource="springmvc-servlet.xml"/></beans>


18、访问测试：

http://localhost/index.jsp

项目涉及到的页面：如下

web\index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>$Title$</title>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/getbooks">书籍管理</a>
</h3>
</body>
</html>


web\WEB-INF\jsp\books.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/3.0.1/css/bootstrap.min.css" rel="stylesheet">
</head>
<body><div class="container">
<h3>书籍列表</h3><h4><a href="${pageContext.request.contextPath}/toAddBook" >添加书籍</a></h4>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-bordered table-hover">
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名称</th>
<th>书籍库存</th>
<th>书籍描述</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:forEach var="book" items="${booklist}">
<tr>
<td>${book.bookID}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
<td>${book.detail}</td>
<td><a href="${pageContext.request.contextPath}/toUpdateBook/${book.bookID}" >修改</a>
| <a href="${pageContext.request.contextPath}/deleteBook/${book.bookID}" >删除</a></td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div></body>
</html>

web\WEB-INF\jsp\addbook.jsp


<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/3.0.1/css/bootstrap.min.css" rel="stylesheet">
</head>
<body><div class="container">
<div class="row clearfix">
<div class="col-md-6 column">
<form role="form" action="${pageContext.request.contextPath}/addBook" method="post">
<div class="form-group">
<label>书籍名称</label>
<input type="text" class="form-control" name="bookName" />
</div>
<div class="form-group">
<label>书籍库存</label>
<input type="text" class="form-control" name="bookCounts" />
</div>
<div class="form-group">
<label>书籍描述</label>
<input type="text" class="form-control" name="detail" />
</div> <button type="submit" class="btn btn-default">添加</button>
</form>
</div>
</div>
</div></body>
</html>

web\WEB-INF\jsp\updatebook.jsp


<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/3.0.1/css/bootstrap.min.css" rel="stylesheet">
</head>
<body><div class="container">
<div class="row clearfix">
<div class="col-md-6 column">
<form role="form" action="${pageContext.request.contextPath}/updateBook" method="post">
<div class="form-group">
<label>书籍名称</label>
<input type="text" class="form-control" name="bookName" value="${book.bookName}"/>
</div>
<div class="form-group">
<label>书籍库存</label>
<input type="text" class="form-control" name="bookCounts" value="${book.bookCounts}"/>
</div>
<div class="form-group">
<label>书籍描述</label>
<input type="text" class="form-control" name="detail" value="${book.detail}"/>
</div>
<input type="hidden" name="bookID" value="${book.bookID}"> <button type="submit" class="btn btn-default">修改</button>
</form>
</div>
</div>
</div></body>
</html>