一个最基本的SSM框架的搭建

开始第一步，上结构图：

几点说明：第一，oracle目前没出免费的maven版本，所以采用添加jar包的方式，放在lib里面，如果是mysql，则不需要，只在maven下pom里配置就可以了

第二，此项目读写数据采用map来做，没用JavaBean，个人觉得有时候方便一点

第三，项目的原始结构，自己去找，我上一篇文章好像也有，如果搭建maven项目，包括maven下怎么出现WebContent(myeclipse是WebRoot),包括如何生成web.xml，以及红叉的解决，搭建好了，继续看下面各个文件的配置：

第一个，项目最下方的pom.xml

<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>ali77</groupId>
<artifactId>ssm_sample</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>ssm_sample Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.6.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0-alpha-1</version>
</dependency>
</dependencies>
<build>
<finalName>ssm_sample</finalName>
</build>
</project>

这些都是很基本的，就不要再做删减了，可以根据功能新增，添加完记得maven-install一下，然后检查一下，是否添加成功

下一步：几个文件就依次给了，按照结构图从下到上的顺序吧

##----index.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>欢迎页</title>
</head>
<body>
（这是一个maven下搭建的一个最基本的ssm框架） <br/>
<a href="${pageContext.request.contextPath}/user/show_user.do">进入主页面</a>
</body>
</html>

##----web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 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_3_0.xsd">
<display-name>ssm_sample</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<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>

<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>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
</web-app>

##----main.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>主页面</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
用户名： ${requestScope.user_name } (这是来自数据库的数据) <br/>
密码： ${requestScope.user_password } (这是经过Sevice层处理过的密码) <br/>
(made by capricornce)
</body>
</html>

##----showUser-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.ali77.mapper.UserMapper">
<select id="listUsers" resultType="java.util.Map">
select
user_id,user_name,user_password from user_info
</select>
</mapper>

##----applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
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-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
<mvc:annotation-driven />

<aop:aspectj-autoproxy />

<context:annotation-config />

<context:component-scan base-package="com.ali77.controller"/>
<context:component-scan base-package="com.ali77.service"/>

<context:property-placeholder location="classpath:jdbc.properties"/>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClass}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialSize" value="${jdbc.initialSize}" />
<property name="maxActive" value="${jdbc.maxActive}" />
<property name="maxIdle" value="${jdbc.maxIdle}" />
<property name="minIdle" value="${jdbc.minIdle}" />

<property name="logAbandoned" value="true"/>

<property name="removeAbandoned" value="true"/>

<property name="removeAbandonedTimeout" value="180"/>

<property name="maxWait" value="60000"/>

<property name="timeBetweenEvictionRunsMillis" value="10000"/>

<property name="numTestsPerEvictionRun" value="10"/>

<property name="minEvictableIdleTimeMillis" value="10000"/>
<property name="validationQuery" value="SELECT SYSDATE FROM DUAL"/>
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<property name="dataSource" ref="dataSource" />


<property name="mapperLocations">
<list>

<value>classpath*:mybatis/*-mapper.xml</value>
</list>
</property>
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="com.ali77.mapper"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
</beans>

##----jdbc.properties

#数据库属性配置
jdbc.driverClass=oracle.jdbc.driver.OracleDriver
#jdbc.url=jdbc:oracle:thin:@127.0.0.1:1521:orcl
jdbc.url=jdbc:oracle:thin:@localhost:1521:orcl
jdbc.username=capricornce
jdbc.password=xxxxxxxx
jdbc.initialSize=30
jdbc.maxActive=150
jdbc.maxIdle=20
jdbc.minIdle=5
jdbc.minPoolSize=2
jdbc.maxPoolSize=20
jdbc.checkoutTimeout=3000
jdbc.maxStatements=50
jdbc.testConnectionOnCheckin=true
jdbc.idleConnectionTestPeriod=18000

##----springmvc.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:mvc="http://www.springframework.org/schema/mvc"
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-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "
>

<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

<mvc:default-servlet-handler/>
</beans>

继续，java代码。。。

##----UserActionController

package com.ali77.controller;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.ali77.service.UserService;
@Controller
@RequestMapping("user")
public class UserActionController {
//自动注入
@Autowired
private UserService userService;
@RequestMapping("show_user")
public String showUser(HttpServletRequest req) {
//获取所有用户信息，这里偷懒，下一行只取一个
List<Map<String, Object>> list = userService.listUsers();
//获取第一个用户信息
Map<String, Object> map = list.get(0);
req.setAttribute("user_name", map.get("USER_NAME"));
req.setAttribute("user_password", map.get("USER_PASSWORD"));
return "main";
}
}

##----UserMapper

package com.ali77.mapper;
import java.util.List;
import java.util.Map;
import org.springframework.stereotype.Repository;
@Repository
public interface UserMapper {
List<Map<String, Object>> listUsers();
}

##----UserService

package com.ali77.service;
import java.util.List;
import java.util.Map;
public interface UserService {
List<Map<String, Object>> listUsers();
}

##----UserServiceImpl

package com.ali77.service.impl;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.ali77.mapper.UserMapper;
import com.ali77.service.UserService;
@Service
public class UserServiceImpl implements UserService {
@Autowired
UserMapper userMapper;
@Override
public List<Map<String, Object>> listUsers() {
List<Map<String, Object>> users = userMapper.listUsers();
for (Map<String, Object> user : users) {
String password = user.get("USER_PASSWORD").toString();
//给密码“加密”，返回给页面
if(password.length() > 6) {
//密码大于6位，除去首尾字符外，全部替换成*
String star = "";
for (int i = 0; i < password.length() - 2; i++) {
star += "*";
}
password = password.charAt(0) + star + password.charAt(password.length() - 1);
} else {
//密码小于6位，全部替换成*
password = password.replaceAll(".", "*");
}
user.put("USER_PASSWORD", password);
}
return users;
}
}

至此代码部分全部完成，剩下的数据库结构非常简单：第一个字段是number，后面是varchar2

最终效果图：

点击超链接：

好了，项目至此完成。

特别说明：写程序要灵活，不要全部抄过去，结果发现不行，一看，数据库用户名密码还是作者本人的，没有改。。。或者说，这个项目一点没改去跑mysql数据库，都是不可取的。如果遇到一般性报错多百度，谁也不能保证程序在哪儿里能都跑通，鬼知道我搭建项目的时候，百度了多少问题，报错，说明我还是比较菜的。。。

下面放上项目的链接

http://download.csdn.net/download/capricornce/10106948，里面内容如下：

可以把ssm_sample,直接导入到eclipse里面，如果报错，这样改一下，就是重新配置一下环境，包括换jdk啊，换tomcat版本啊

一个最基本的SSM框架的搭建

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