整合 SSM
項目結構
.
├── pom.xml
└── src
└── main
├── java
│ └── com
│ └── pengshiyu
│ ├── controller
│ │ └── UserController.java
│ ├── dao
│ │ ├── UserDao.java
│ │ └── impl
│ │ └── UserDaoImpl.java
│ ├── interceptor
│ │ └── MyInterceptor.java
│ ├── service
│ │ ├── UserService.java
│ │ └── impl
│ │ └── UserServiceImpl.java
│ └── vo
│ └── User.java
├── resources
│ ├── applicationContext.xml
│ ├── db.properties
│ ├── mappers
│ │ └── user.mapper.xml
│ ├── mybatis-config.xml
│ └── spring-mvc.xml
└── webapp
├── WEB-INF
│ └── web.xml
├── detail.jsp
├── edit.jsp
└── list.jsp
依賴
pom.xml
<?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>org.example</groupId>
<artifactId>spring-mvc-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<!-- tomcat7插件 maven 命令 tomcat7:run 啓動項目-->
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<port>8080</port>
<path>/</path>
<uriEncoding>UTF-8</uriEncoding>
<!--添加忽略war包檢查標籤,則可以讓tomcat7:run指令正常啓動tomcat-->
<ignorePackaging>true</ignorePackaging>
<contextFile>src/main/webapp/WEB-INF/web.xml</contextFile>
<contextReloadable>true</contextReloadable>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-expression -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 文件上傳-->
<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.4</version>
</dependency>
<!-- JSON-->
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.11.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.5</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.4</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.4</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.6.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.18</version>
</dependency>
</dependencies>
</project>
配置
1、web.xml
<?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_4_0.xsd"
version="4.0">
<!-- Spring-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Spring MVC-->
<servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<!-- 表示容器在啓動時立即加載servlet -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<!-- 處理所有URL -->
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 處理亂碼-->
<filter>
<filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
2、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"
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/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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
">
<!-- 讀取數據庫配置-->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:db.properties"/>
</bean>
<!-- 配置dataSource-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driver}"/>
<property name="url" value="${url}"/>
<property name="username" value="${username}"/>
<property name="password" value="${password}"/>
</bean>
<!-- 配置工廠-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!-- 申明式事務-->
<!-- 事務管理器-->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="save" propagation="REQUIRED"/>
<tx:method name="get" read-only="true"/>
<tx:method name="*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="pointcut" expression="execution(* com.pengshiyu.service.impl.*.* (..))"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
</aop:config>
<!-- 掃描包下的註解-->
<context:component-scan base-package="com.pengshiyu"/>
</beans>
3、db.properties
driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/data
username=root
password=123456
4、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"
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">
<!-- 掃描包下的註解-->
<context:component-scan base-package="com.pengshiyu.controller"/>
</beans>
5、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>
<typeAliases>
<package name="com.pengshiyu.vo"/>
</typeAliases>
<mappers>
<mapper resource="mappers/user.mapper.xml"/>
</mappers>
</configuration>
6、user.mapper.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.pengshiyu.vo.user.mapper">
<!--
創建users表
create table users(
id int PRIMARY key auto_increment,
name varchar(20),
password varchar(20)
)
插入測試數據
insert into users(name, `password`) values("小明", "123456");
insert into users(name, `password`) values("小王", "123457");
insert into users(name, `password`) values("小趙", "123458");
insert into users(name, `password`) values("小四", "123459");
-->
<select id="selectList" resultType="User">
select * from users
</select>
<select id="selectOne" resultType="User">
select * from users where id = #{id}
</select>
<!-- 自增主鍵封裝到了對象的id屬性上 -->
<insert id="insert" useGeneratedKeys="true" keyProperty="id">
insert into users(name, password) values(#{name}, #{password})
</insert>
<delete id="delete">
delete from users where id = #{id}
</delete>
<update id="update">
update users set name = #{name}, password = #{password} where id = #{id}
</update>
</mapper>
實體類
package com.pengshiyu.vo;
public class User {
private int id;
private String name;
private String password;
public User(int id, String name, String password) {
this.id = id;
this.name = name;
this.password = password;
}
public User() {
}
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 getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", password='" + password + '\'' +
'}';
}
}
Dao
package com.pengshiyu.dao;
import com.pengshiyu.vo.User;
import java.util.List;
public interface UserDao {
public List<User> list();
public User detail(int id);
public int delete(int id);
public int update(User user);
public int insert(User user);
}
實現類
package com.pengshiyu.dao.impl;
import com.pengshiyu.dao.UserDao;
import com.pengshiyu.vo.User;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository("userDao")
public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {
@Autowired
@Override
public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
super.setSqlSessionFactory(sqlSessionFactory);
}
public List<User> list() {
return getSqlSession().selectList("com.pengshiyu.vo.user.mapper.selectList");
}
public User detail(int id) {
return getSqlSession().selectOne("com.pengshiyu.vo.user.mapper.selectOne", id);
}
public int delete(int id) {
return getSqlSession().delete("com.pengshiyu.vo.user.mapper.delete", id);
}
public int update(User user) {
return getSqlSession().update("com.pengshiyu.vo.user.mapper.update", user);
}
public int insert(User user) {
return getSqlSession().insert("com.pengshiyu.vo.user.mapper.insert", user);
}
}
Service
package com.pengshiyu.service;
import com.pengshiyu.vo.User;
import java.util.List;
public interface UserService {
public List<User> list();
public User detail(int id);
public int delete(int id);
public int update(User user);
public int insert(User user);
}
實現類
package com.pengshiyu.service.impl;
import com.pengshiyu.dao.UserDao;
import com.pengshiyu.service.UserService;
import com.pengshiyu.vo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}
public List<User> list() {
return userDao.list();
}
public User detail(int id) {
return userDao.detail(id);
}
public int delete(int id) {
return userDao.delete(id);
}
public int update(User user) {
return userDao.update(user);
}
public int insert(User user) {
return userDao.insert(user);
}
}
Controller
package com.pengshiyu.controller;
import com.pengshiyu.service.UserService;
import com.pengshiyu.vo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import java.io.IOException;
import java.util.List;
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
public void setUserService(UserService userService) {
this.userService = userService;
}
@RequestMapping("/list")
public String list(ModelMap modelMap) throws IOException {
List<User> list = userService.list();
System.out.println(list);
modelMap.addAttribute("list", list);
return "/list.jsp";
}
@RequestMapping("/detail")
public String detail(int id, ModelMap modelMap) throws IOException {
User user = userService.detail(id);
modelMap.addAttribute("user", user);
return "/detail.jsp";
}
@RequestMapping("/update")
public String update(int id, ModelMap modelMap) throws IOException {
User user = userService.detail(id);
modelMap.addAttribute("title", "修改");
modelMap.addAttribute("user", user);
return "/edit.jsp";
}
@RequestMapping("/add")
public String add(ModelMap modelMap) throws IOException {
User user = new User();
modelMap.addAttribute("title", "添加");
modelMap.addAttribute("user", user);
return "/edit.jsp";
}
@RequestMapping("/delete")
public String delete(int id) throws IOException {
userService.delete(id);
return "redirect:list";
}
@RequestMapping(value = "/edit", method = RequestMethod.POST)
public String edit(User user, ModelMap modelMap) throws IOException {
if (user.getId() != 0) {
userService.update(user);
} else {
userService.insert(user);
}
return "redirect:detail?id=" + user.getId();
}
}
攔截器
此項目中並沒有配置生效
package com.pengshiyu.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;
public class MyInterceptor implements HandlerInterceptor {
private List<String> allowedUrls;
// 在請求處理的方法執行之前執行,
// 返回true執行下一個攔截器,
// 返回false不執行下一個攔截器
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
System.out.println("preHandle");
// 解決中文打印亂碼輸出
response.setContentType("text/html;charset=utf-8");
// 判斷session
Object user = request.getSession().getAttribute("user");
if(user != null){
return true;
}
// 判斷放行路徑
String url = request.getRequestURL().toString();
System.out.println(url);
for(String temp: allowedUrls){
if(url.endsWith(temp)){
return true;
}
}
// 如果沒有登錄就重定向到登錄頁面
response.sendRedirect("/login.do");
return false;
}
// 在處理方法執行之後執行
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println("postHandle");
}
// 在DispatcherServlet 之後執行 清理工作
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println("afterCompletion");
}
public List<String> getAllowedUrls() {
return allowedUrls;
}
public void setAllowedUrls(List<String> allowedUrls) {
this.allowedUrls = allowedUrls;
}
}
頁面
list.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%> <%@ taglib prefix="c"
uri="http://java.sun.com/jsp/jstl/core" %>
<h2>list</h2>
<button>
<a href="/user/add">添加</a>
</button>
<table>
<tr>
<th>編號</th>
<th>姓名</th>
<th>密碼</th>
<th>詳細</th>
<th>刪除</th>
</tr>
<c:forEach items="${list}" var="item">
<tr>
<td>${item.id}</td>
<td>${item.name}</td>
<td>${item.password}</td>
<td><a href="/user/detail?id=${item.id}">詳細</a></td>
<td><a href="/user/update?id=${item.id}">修改</a></td>
<td><a href="/user/delete?id=${item.id}">刪除</a></td>
</tr>
</c:forEach>
</table>
detail.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%> <%@ taglib prefix="c"
uri="http://java.sun.com/jsp/jstl/core" %>
<h2>detail</h2>
<p>
<a href="/user/list">返回列表</a>
</p>
<button><a href="/user/update?id=${user.id}">編輯</a></button>
<p>id: ${user.id}</p>
<p>name: ${user.name}</p>
<p>password: ${user.password}</p>
edit.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%> <%@ taglib prefix="c"
uri="http://java.sun.com/jsp/jstl/core" %>
<h2>${title}</h2>
<p>
<a href="/user/list">返回列表</a>
</p>
<form action="/user/edit" method="POST">
<input type="text" name="id" value="${user.id}" hidden />
<p>
<label for="name">name</label>
<input id="" type="text" name="name" value="${user.name}" />
</p>
<p>
<label for="password">password</label>
<input type="text" name="password" value="${user.password}" />
</p>
<p>
<input type="submit" />
</p>
</form>
項目代碼
https://gitee.com/mouday/spring-springmvc-mybatis-demo