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SSM框架搭建,有程序,附带所需jar包

2017-01-07 11:44 483 查看
-SSM =SpringMVC +Spring +Mybatis

需要的jar包链接链接:http://pan.baidu.com/s/1c10kx7U 密码:1u18

我们先来看看文件结构图



有点多吗?没关系,我们可以一步一步的来

首先我们在mysql中创建一个数据库SSM

然后创建一个表d_user

create table d_user(
id       varchar(20),
username varchar(20),
age  varchar(20)
);


插入一条数据

insert into d_user values(“1”,”hello”,”25”);

好了数据库创建完毕了

然后 我们肯定先需要创建一个User.java

package com.model;

public class User {
int id;
String username;
String age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}

}


然后我们在来创建mybatis的映射表UserMapper.java和userMapper.xml

先创建一个UserMapper.java

package com.mapper;

import java.util.List;

import com.model.User;

public interface UserMapper {
String findAge(String id);
}


再来创建userMapper.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.mapper.UserMapper">

<select id="findAge" parameterType="String" resultType="String">
select age from d_user WHERE id=#{id}
</select>
</mapper>


好了到这里为止,Mybatis的东西基本搭建完毕,当然后续还要配置文件

下面我们创建UserService接口

package com.service;

import java.util.List;

import com.model.User;

public interface UserService {
String findAge(String id);
}


再来创建它的实现UserServiceImpl.java

package com.service;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.mapper.UserMapper;
import com.model.User;
import com.service.UserService;

@Service
@Transactional
public class UserServiceImpl implements UserService{
@Resource
public UserMapper userMapper;
@Override
public String findAge(String id) {
// TODO Auto-generated method stub
String age =userMapper.findAge(id);
return age;
}

}


注意注解是必须的,生成bean使用,大家可以搜索一下依赖注入又称控制反转了解一下

好了,现在我们可以到控制层了,我们来写一个UserController

package com.controller;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

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 com.model.User;
import com.service.UserService;

@Controller
public class UserController {

@Autowired
private UserService userService;

@RequestMapping(value="/hello.do")
public String find(HttpServletRequest request)
{
String age=userService.findAge("1");
System.out.println(age);//如果实验成功,在控制台会打印年龄25
return "index";
}
}


下面我们来个jsp看看 hello.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="hello.do" method="post">
hello:<input type="text" name="userName"/>
<input type="submit" value="提交" />
</form>
</body>
</html>


再写一个index.jsp

只需要在body中添加一个456即可

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<p>456</p>
</body>
</html>


下面我们来配置文件

先配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list>
<welcome-file>hello.jsp</welcome-file>
</welcome-file-list>
<!-- 加载Spring容器配置 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- 设置Spring容器加载所有的配置文件的路径 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/applicationContext.xml</param-value>
</context-param>

<!-- 配置SpringMVC核心控制器 -->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/spring-mvc.xml</param-value>
</init-param>
<!-- 启动加载一次 -->
<load-on-startup>1</load-on-startup>
</servlet>

<!--为DispatcherServlet建立映射 -->
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<!-- 此处可以可以配置成*.do -->
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<!-- 防止Spring内存溢出监听器 -->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>

<!-- 解决工程编码过滤器 -->
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>


我们在配置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"
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-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> 
<!-- 注解扫描包 -->
<context:component-scan base-package="com" />

<!-- 开启注解 -->
<mvc:annotation-driven />

<!-- 定义跳转的文件的前后缀 ,视图模式配置-->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 -->
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>


配置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>
<typeAlias alias="User" type="com.model.User"/>
</typeAliases>
<mappers>
<mapper resource="com/mapper/userMapper.xml" />
</mappers>
</configuration>


在配置最后一个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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

<!-- 1. 数据源 : DriverManagerDataSource -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/SSM" />
<property name="username" value="root" />
<property name="password" value="123" />
</bean>

<!--
2. mybatis的SqlSession的工厂: SqlSessionFactoryBean dataSource:引用数据源

MyBatis定义数据源,同意加载配置
-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:config/mybatis-config.xml" />
</bean>

<!--
3. mybatis自动扫描加载Sql映射文件/接口 : MapperScannerConfigurer sqlSessionFactory

basePackage:指定sql映射文件/接口所在的包(自动扫描)
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.mapper"></property>
<property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
</bean>

<!--
4. 事务管理 : DataSourceTransactionManager dataSource:引用上面定义的数据源
-->
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- 5. 使用声明式事务
transaction-manager:引用上面定义的事务管理器
-->
<tx:annotation-driven transaction-manager="txManager" />

</beans>


要注意 数据的账号和密码要修改成你自己的,好了大功告成,然后我们运行hello.jsp,随意输入一个字符比如123,然后提交,如果成功读取,会在控制台输出25.
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