使用maven来构建环境,开发工具是eclipse,Tomcat为8.5,jdk为1.8
所有代码及位置贴出,直接复制代码就是完整项目
1、maven中的pom.xml,这个文件是将需要的jar进行下载并载入项目,不需要一个一个去找。
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>hyphq</groupId>
<artifactId>hyphq</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>hyphq Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<!-- 使用junit4 用注解方式 -->
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- 补全项目依赖 -->
<!-- 1:日志 java日志:slf4j,log4j,logback,common-logging slf4j 是规范/接口 日志实现:log4j,logback,common-logging
使用:slf4j + logback -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 实现slf4j接口并整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 2:数据库相关依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- DAO框架:MyBatis依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!-- mybatis自身实现的spring整合依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!--:3:servlet web相关依赖 -->
<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>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- 4:spring依赖 -->
<!-- 1)spring核心依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!-- 2)spring dao层依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!-- 3)spring web相关依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!-- 4)spring test相关依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>hyphq</finalName>
<plugins>
<!-- define the project compile level -->
<!-- maven编译用的版本控制,控制jdk的版本不会回跳 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
2、web.xml,此文件在webapp/WEB-INF中
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" metadata-complete="true" version="3.1">
<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>
<servlet>
<servlet-name>mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
3、ssm框架的运行步骤为DataBase ===> Entity ===> Mapper.xml ===> Mapper.Java ===> Service.java ===> Controller.java ===> Jsp.
先建数据库,我的项目为查看用户信息,所以要有如下字段
id | idcode | xingming | mima | chuanma | zhuangtai |
1 | 11 | 111 | 111 | 111 | 0 |
2 | 22 | 222 | 222 | 222 | 0 |
4、根据数据库创建对应实体类User.java
package com.entity;
public class User {
private String id;
private String idcode;
private String xingming;
private String mima;
private String chuanma;
private String zhuangtai;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getIdcode() {
return idcode;
}
public void setIdcode(String idcode) {
this.idcode = idcode;
}
public String getXingming() {
return xingming;
}
public void setXingming(String xingming) {
this.xingming = xingming;
}
public String getMima() {
return mima;
}
public void setMima(String mima) {
this.mima = mima;
}
public String getChuanma() {
return chuanma;
}
public void setChuanma(String chuanma) {
this.chuanma = chuanma;
}
public String getZhuangtai() {
return zhuangtai;
}
public void setZhuangtai(String zhuangtai) {
this.zhuangtai = zhuangtai;
}
@Override
public String toString() {
return "User [id=" + id + ", idcode=" + idcode + ", xingming=" + xingming + ", mima=" + mima + ", chuanma="
+ chuanma + ", zhuangtai=" + zhuangtai + "]";
}
public User(String id, String idcode, String xingming, String mima, String chuanma, String zhuangtai) {
super();
this.id = id;
this.idcode = idcode;
this.xingming = xingming;
this.mima = mima;
this.chuanma = chuanma;
this.zhuangtai = zhuangtai;
}
public User() {
super();
// TODO Auto-generated constructor stub
}
}
5 Dao层UserDao.java及映射文件UserDao.xml对应的流程为mapper.xml和mapper.java
UserDao.java
package com.dao;
import com.entity.User;
public interface UserDao {
public User findUser(String idcode);
}
UserDao.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.dao.UserDao">
<!-- 目的:为DAO接口方法提供sql语句配置 -->
<!-- 查询用户和密码进行登录 -->
<select id="findUser" resultType="User"
parameterType="String">
select * from hyphq where idcode = #{idcode}
</select>
</mapper>
6、关键文件spring配置文件
spring-dao.xml 复制注意路径
<?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">
<!-- 配置整合mybatis过程 -->
<!-- 1:配置数据库相关参数 properties的属性:${url} -->
<context:property-placeholder
location="classpath:jdbc.properties" />
<!-- 2:数据库连接池 -->
<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 配置连接池属性 -->
<property name="driverClass" value="${jdbc.driverClass}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"></property>
<property name="minPoolSize" value="10"></property>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"></property>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="1000"></property>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"></property>
</bean>
<!-- 约定大于配置 -->
<!-- 3:配置sqlsessionfactory对象 -->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 配置mybatis全局配置文件:mybatis-config.xml -->
<property name="configLocation"
value="classpath:mybatis-config.xml"></property>
<!-- 扫描entity包 使用别名 com.sy.entity.User ->User -->
<property name="typeAliasesPackage" value="com.entity"></property>
<!-- 扫描sql配置文件:mapping需要的xml文件 -->
<property name="mapperLocations"
value="classpath:mapper/*.xml"></property>
</bean>
<!-- 4:配置扫描Dao接口的包,动态实现Dao接口,注入到Spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlsessionfactory -->
<property name="sqlSessionFactoryBeanName"
value="sqlSessionFactory"></property>
<!-- 给出需要扫描的Dao接口包 -->
<property name="basePackage" value="com.dao"></property>
</bean>
</beans>
spring-service.xml 复制注意路径
<?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">
<!-- 扫描service包下所有使用注解的类型 -->
<context:component-scan
base-package="com.service" />
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库的连接池 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 配置基于注解的声明式事务 默认使用注解来管理事务行为 -->
<tx:annotation-driven
transaction-manager="transactionManager" />
</beans>
spring-web.xml 复制注意路径
<?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"
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/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
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
">
<!-- 配置springMVC -->
<!-- 1:开启springMVC注解模式 -->
<!-- 简化配置: (1)自动注册DefaultAnnotationHandlerMapping,AnnotationMethodHandlerAdapter
(2)提供一系列:数据绑定,数字和日期的format @NumberFormat,@DataTimeFormat xml,json默认读写支持 -->
<mvc:annotation-driven />
<!--处理静态资源 -->
<mvc:default-servlet-handler />
<mvc:resources location="/WEB-INF/js/" mapping="/js/**" />
<mvc:resources location="/WEB-INF/css/" mapping="/css/**" />
<mvc:resources location="/WEB-INF/images/"
mapping="/images/**" />
<mvc:resources location="/WEB-INF/webfonts/" mapping="/webfonts/**" />
<!-- 2:配置jsp显示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>
<!-- 3:扫描web相关的bean -->
<context:component-scan
base-package="com.controller" />
</beans>
7、UserService.java及UserServiceImpl.java
package com.service;
import com.entity.User;
public interface UserService {
public User login(String idcode,String mima);
}
package com.service.Impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.dao.UserDao;
import com.entity.User;
import com.service.UserService;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
public User login(String idcode,String mima) {
User user = userDao.findUser(idcode);
if(user != null && user.getMima().equals(mima)) {
return user;
}
return null;
}
}
8、数据库连接及配置文件
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>
<!-- 配置全局属性 -->
<settings>
<!--使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true"/>
<!-- 使用列别名替换列名 默认:true
select name as title from table
-->
<setting name="useColumnLabel" value="true"/>
<!-- 开启驼峰命名转换:Table(create_time) -> Entity(createTime) -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
</configuration>
jdbc.properties按个人不同数据库更改
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/etms?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=12345678
9、controller(控制器)
UserController.java
package com.controller;
import javax.servlet.http.HttpSession;
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 com.entity.User;
import com.service.UserService;
@Controller
@SessionAttributes("user")
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/login")
public String login() {
return "login";
}
@RequestMapping("/info")
public String login(User user,Model model) {
user = userService.login(user.getIdcode(), user.getMima());
if(user != null){
model.addAttribute("user",user);
return "success";
}
return "fail";
}
}
10、login.jsp
<%@ 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>Insert title here</title>
</head>
<body>
<form action="/hyphq/info" method="post">
<table>
<tr>
<td>用户名:</td>
<td><input id="idcode" name="idcode" type="text"></td>
</tr>
<tr>
<td>密码:</td>
<td><input id="mima" name="mima" type="password"></td>
</tr>
<tr>
<td><input type="submit" value="登录"></td>
</tr>
</table>
</form>
</body>
</html>
success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>Insert title here</title>
</head>
<body>
<div>
<strong> welcome,${sessionScope.user.xingming}! </strong>
</div>
this is success page!
</body>
</html>
fail.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="ISO-8859-1"%>
<!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>Insert title here</title>
</head>
<body>
error
</body>
</html>
最后界面,我取消了8080接口,具体可以百度
因为有@RequestMapping拦截器,所以一定要写对访问路径。