赵计刚
每天进步一点点

1、业务模块与数据模块分离

在实际开发中,我们项目的架构业务模块和数据模块是分离的,举个例子,假设我们的项目有"人员管理模块"和"酒店管理模块"两个模块,按照上一章的介绍,我们会建立下图所示的项目结构:

其中,人员管理模块的controller、service、dao、mapper都在一个项目中,而在实际使用中,我们会将数据模块分离出来,即将以上两个子模块的service、dao、mapper拿出来,放在一个子项目中,形成如下的项目结构:

注意以下几点:

  • 包的命名最好是com.xxx.mapper.user和不是com.xxx.user.mapper,前者在spring.xml中配置mybatis时更方便,具体见spring.xml的中的注释
  • 在controller那一层的项目是需要部署的,即是war,而下边的数据模块是作为war的一个jar,所以在war层的pom.xml需要将下边的数据模块作为一个jar来引入到项目中
  • service层到底是放在业务模块处还是放在数据模块处,这个根据需求而定,一般而言,都放在数据模块处,方便彼此service的调用,如userService调用hotelService,如果这个时候把两个service分别放在各自的业务模块层中,相互的调用就要通过RPC了,当然,有的时候可能有些与其他模块都不调用的service放在war层可能会好一些。
  • 将来编写的缓存模块类、通用模块类、RPC工具类等都会作为jar被war层调用。

 

2、实现

我将上一章的项目做了修改,将ssmm项目改成了userManagement项目,并将userManagement项目实现了业务模块和数据模块的分离,具体的操作参照第一章和第二章的相关内容,这里直接给出项目结构和各个文件。

2.1、项目结构

2.2、代码实现

2.2.1、ssmm0

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/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.xxx</groupId>
    <artifactId>ssmm0</artifactId>
    <version>1.0-SNAPSHOT</version>

    <name>ssmm0</name>
    <packaging>pom</packaging><!-- 父模块 -->

    <!-- 管理子模块 -->
    <modules>
        <module>userManagement</module><!-- 具体业务1-人员管理系统 -->
        <module>data</module><!-- 封装数据操作 -->
    </modules>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <!-- dependencyManagement不会引入实际的依赖,只是作为一个依赖池,供其和其子类使用 -->
    <dependencyManagement>
        <dependencies>
            <!-- json -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.1.39</version>
            </dependency>
            <!-- servlet -->
            <dependency>
                <groupId>javax.servlet</groupId>
                <artifactId>javax.servlet-api</artifactId>
                <version>3.0.1</version>
                <scope>provided</scope>
            </dependency>
            <!-- spring -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-core</artifactId>
                <version>3.2.6.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-beans</artifactId>
                <version>3.2.6.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>3.2.6.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>3.2.6.RELEASE</version>
            </dependency>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-webmvc</artifactId>
                <version>3.2.6.RELEASE</version>
            </dependency>
            <!-- 这个是使用velocity的必备包 -->
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context-support</artifactId>
                <version>3.2.6.RELEASE</version>
            </dependency>
            <!-- mysql -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.27</version>
                <scope>runtime</scope>
            </dependency>
            <!-- 数据源 -->
            <dependency>
                <groupId>org.apache.tomcat</groupId>
                <artifactId>tomcat-jdbc</artifactId>
                <version>7.0.47</version>
            </dependency>
            <!-- mybatis -->
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.1.1</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>1.1.1</version>
            </dependency>
            <!-- velocity -->
            <dependency>
                <groupId>org.apache.velocity</groupId>
                <artifactId>velocity</artifactId>
                <version>1.5</version>
            </dependency>
            <dependency>
                <groupId>velocity-tools</groupId>
                <artifactId>velocity-tools-generic</artifactId>
                <version>1.2</version>
            </dependency>
            <!-- 用于加解密 -->
            <dependency>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
                <version>1.7</version>
            </dependency>
            <dependency>
                <groupId>org.bouncycastle</groupId>
                <artifactId>bcprov-jdk15on</artifactId>
                <version>1.47</version>
            </dependency>
            <!-- 集合工具类 -->
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-collections4</artifactId>
                <version>4.0</version>
            </dependency>
            <!-- http -->
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>4.2.6</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
    
    <!-- 引入实际依赖 -->
    <dependencies>
        <!-- json -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>
        <!-- spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <!-- 集合工具类 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-collections4</artifactId>
        </dependency>
    </dependencies>
    
    <build>
        <resources>
            <!-- 
                这里配置了这一块儿true,才可以让指定文件(这里是src/main/resources/*.xml)读到pom.xml中的配置信息 ,
                值得注意的是,如果src/main/resources下还有其他文件,而你不想让其读pom.xml,
                你还必须得把src/main/resources下的其余文件再配置一遍,配置为false(不可读pom.xml),
                如下边的注释那样,否则,会报这些文件(在这里,就是*.properties)找不到的错误
            -->
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
                <includes>
                    <include>*.xml</include>
                </includes>
            </resource>
            <!-- <resource>
                <directory>src/main/resources</directory>
                <filtering>false</filtering>可以读 ,若改为false就是不可读
                <includes>
                    <include>*.properties</include>
                </includes>
            </resource> -->
        </resources>
        
    </build>
    
    <!-- 
        profiles可以定义多个profile,然后每个profile对应不同的激活条件和配置信息,从而达到不同环境使用不同配置信息的效果 
        注意两点:
        1)<activeByDefault>true</activeByDefault>这种情况表示服务器启动的时候就采用这一套env(在这里,就是prod)
        2)当我们启动服务器后,想采用开发模式,需切换maven的env为dev,如果env的配置本身就是dev,需要将env换成rc或prod,点击apply,然后再将env切换成dev,点击apply才行
    -->
    <profiles>
        <!-- 开发env -->
        <profile>
            <id>dev</id>
            <activation>
                <activeByDefault>false</activeByDefault>
                <property>
                    <name>env</name>
                    <value>dev</value>
                </property>
            </activation>
            <properties>
                <env>dev</env>

                <jdbc.driverClassName>com.mysql.jdbc.Driver</jdbc.driverClassName>
                <!-- 
                    对于jdbc.url中内容的配置,如果需要配置 &amp;时,有两种方法:
                    1)如下边这样,使用<![CDATA[XXX]]>包起来
                    2)使用jdbc.properties文件来读取此pom.xml,然后spring.xml再读取jdbc.properties文件
                    显然,前者更方便,而且还省了一个jdbc.properties的文件,但是,有的时候,还是会用后者的;
                    在使用后者的时候,注意三点:
                    1)需要修改上边的build中的内容
                    2)需要在spring.xml中配置<context:property-placeholder location="classpath:jdbc.properties"/>
                    3)将jdbc.properties放在ssmm0-data项目中,之后需要将ssmm0-data项目的env配置为dev
                -->
                <jdbc.url><![CDATA[jdbc:mysql://127.0.0.1:3306/blog?zeroDateTimeBehavior=convertToNull&amp;useUnicode=true&amp;characterEncoding=utf-8]]></jdbc.url>
                <jdbc.username>root</jdbc.username>
                <jdbc.password>123456</jdbc.password>
            </properties>
        </profile>
        <!-- 预上线env -->
        <profile>
            <id>rc</id>
            <activation>
                <activeByDefault>false</activeByDefault>
                <property>
                    <name>env</name>
                    <value>rc</value>
                </property>
            </activation>
            <properties>
                <env>rc</env>

                <jdbc.driverClassName>com.mysql.jdbc.Driver</jdbc.driverClassName>
                <!-- 假设的一个地址 -->
                <jdbc.url><![CDATA[jdbc:mysql://10.10.10.100:3306/blog?zeroDateTimeBehavior=convertToNull&amp;useUnicode=true&amp;characterEncoding=utf-8]]></jdbc.url>
                <jdbc.username>root2</jdbc.username>
                <jdbc.password>1234562</jdbc.password>
            </properties>
        </profile>
        <!-- 线上env -->
        <profile>
            <id>prod</id>
            <activation>
                <activeByDefault>true</activeByDefault>
                <property>
                    <name>env</name>
                    <value>prod</value>
                </property>
            </activation>
            <properties>
                <env>prod</env>
                
                <jdbc.driverClassName>com.mysql.jdbc.Driver</jdbc.driverClassName>
                <!-- 假设的一个地址 -->
                <jdbc.url><![CDATA[jdbc:mysql://99.99.99.999:3307/blog?zeroDateTimeBehavior=convertToNull&amp;useUnicode=true&amp;characterEncoding=utf-8]]></jdbc.url>
                <jdbc.username>sadhijhqwui</jdbc.username>
                <jdbc.password>zxczkchwihcznk=</jdbc.password>
            </properties>
        </profile>
    </profiles>
</project>
View Code

 

注意:

  • 所有的注意点:都在注释中
  • 上述<build>中的resource的配置是为了是spring.xml可以读取pom.xml文件的内容,具体的注意点,查看注释

  • profiles的配置是为了配置多套环境(在这里配置了三套env,开发,预上线和线上环境),具体的注意点,查看注释

2.2.2、ssmm0-data

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/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <!-- 指定父模块 -->
    <parent>
        <groupId>com.xxx</groupId>
        <artifactId>ssmm0</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    
    <groupId>com.xxx.ssmm0</groupId>
    <artifactId>ssmm0-data</artifactId>

    <name>ssmm0-data</name>
    <packaging>jar</packaging><!-- 只是作为其他模块使用的工具 -->

    <!-- 引入实际依赖 -->
    <dependencies>
        <!-- mysql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- 数据源 -->
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jdbc</artifactId>
        </dependency>
        <!-- mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
        </dependency>
    </dependencies>
</project>
View Code

注意:<package>为jar

com.xxx.model.userManagement.Admin

package com.xxx.model.userManagement;

/**
 * 管理员 
 */
public class Admin {
    private int id;
    private String username;
    private String password;

    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 getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}
View Code

com.xxx.mapper.userManagement.AdminMapper

package com.xxx.mapper.userManagement;

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;

import com.xxx.model.userManagement.Admin;

/**
 * 管理员Mapper
 */
public interface AdminMapper {
    @Insert("INSERT INTO userinfo(username, password) VALUES(#{username},#{password})")
    public int insertAdmin(Admin admin);

    @Select("SELECT * FROM userinfo WHERE username = #{username} AND password = #{password}")
    @Results(value = { 
            @Result(id = true, column = "id", property = "id"),
            @Result(column = "username", property = "username"),
            @Result(column = "password", property = "password") })
    public Admin selectAdmin(@Param("username") String username,
                             @Param("password") String password);
}
View Code

com.xxx.dao.userManagement.AdminDao

package com.xxx.dao.userManagement;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import com.xxx.mapper.userManagement.AdminMapper;
import com.xxx.model.userManagement.Admin;

/**
 * 管理员DAO
 */
@Repository
public class AdminDao {
    @Autowired
    private AdminMapper adminMapper;
    
    public boolean register(Admin admin){
        return adminMapper.insertAdmin(admin)==1?true:false;
    }
    
    public Admin login(String username ,String password){
        return adminMapper.selectAdmin(username, password);
    }
}
View Code

com.xxx.service.userManagement.AdminService

package com.xxx.service.userManagement;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.xxx.dao.userManagement.AdminDao;
import com.xxx.model.userManagement.Admin;

/**
 * 管理员service
 */
@Service
public class AdminService {
    @Autowired
    private AdminDao adminDao;
    
    public boolean register(Admin admin){
        return adminDao.register(admin);
    }
    
    public Admin login(String username, String password) {
        return adminDao.login(username, password);
    }
}
View Code

代码很简单,与之前的基本一样,只是名字换了而已。

值得注意的是包名:com.xxx.mapper.userManagement而非com.xxx.userManagement.mapper。

2.2.3、ssmm0-userManagement

pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 4 
 5     <modelVersion>4.0.0</modelVersion>
 6 
 7     <!-- 指定父模块 -->
 8     <parent>
 9         <groupId>com.xxx</groupId>
10         <artifactId>ssmm0</artifactId>
11         <version>1.0-SNAPSHOT</version>
12     </parent>
13     
14     <groupId>com.xxx.ssmm0</groupId>
15     <artifactId>ssmm0-userManagement</artifactId>
16     <!--<version>1.0-SNAPSHOT</version>--><!-- 父模块已经指定了版本号,这里就不用了-->
17 
18     <name>ssmm0-userManagement</name>
19     <packaging>war</packaging><!-- 需要部署的模块 -->
20 
21     <!-- 引入实际依赖 -->
22     <dependencies>
23         <!-- 将ssmm0-data项目作为一个jar引入项目中 -->
24         <dependency>
25             <groupId>com.xxx.ssmm0</groupId>
26             <artifactId>ssmm0-data</artifactId>
27             <version>1.0-SNAPSHOT</version>
28         </dependency>
29         <!-- servlet -->
30         <dependency>
31             <groupId>javax.servlet</groupId>
32             <artifactId>javax.servlet-api</artifactId>
33         </dependency>
34         <!-- spring mvc -->
35         <dependency>
36             <groupId>org.springframework</groupId>
37             <artifactId>spring-web</artifactId>
38         </dependency>
39         <dependency>
40             <groupId>org.springframework</groupId>
41             <artifactId>spring-webmvc</artifactId>
42         </dependency>
43         <!-- 这个是使用velocity的必备包 -->
44         <dependency>
45             <groupId>org.springframework</groupId>
46             <artifactId>spring-context-support</artifactId>
47         </dependency>
48         <!-- velocity -->
49         <dependency>
50             <groupId>org.apache.velocity</groupId>
51             <artifactId>velocity</artifactId>
52         </dependency>
53         <dependency>
54             <groupId>velocity-tools</groupId>
55             <artifactId>velocity-tools-generic</artifactId>
56         </dependency>
57     </dependencies>
58 </project>
View Code

注意:将ssmm0-data作为普通的jar引入即可。

spring.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 4     xmlns:mvc="http://www.springframework.org/schema/mvc"
 5     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 6                            http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
 7                            http://www.springframework.org/schema/context 
 8                            http://www.springframework.org/schema/context/spring-context-3.2.xsd
 9                            http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
10                            
11     <!-- 注解扫描 -->
12     <context:component-scan base-package="com.xxx" />
13     
14     <!-- 配置fastjson转换器 -->
15     <mvc:annotation-driven>
16         <mvc:message-converters register-defaults="true">
17             <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"></bean>
18         </mvc:message-converters>
19     </mvc:annotation-driven>
20     
21     <!-- 引入数据源,这里变量的读取都是从ssmm0的pom.xml中读取的 -->
22     <bean id="xxxDataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close">
23         <property name="driverClassName" value="${jdbc.driverClassName}" />
24         <property name="url" value="${jdbc.url}" />
25         <property name="username" value="${jdbc.username}" />
26         <property name="password" value="${jdbc.password}" />
27     </bean>
28     
29     <!-- 引入mybatis -->
30     <bean id="xxxSqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
31         <property name="dataSource" ref="xxxDataSource" />
32     </bean>
33     <bean id="xxxMapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
34         <!-- 
35             这里就是包名为什么就做com.xxx.mapper.user而非com.xxx.user.mapper,
36             这样的话,比如说有两个项目com.xxx.mapper.user和com.xxx.mapper.hotel,value只需写作com.xxx.mapper即可
37             否则,value就要写作com.xxx.user.mapper,com.xxx.hotel.mapper
38          -->
39         <property name="basePackage" value="com.xxx.mapper" />
40         <property name="sqlSessionFactoryBeanName" value="xxxSqlSessionFactory" />
41     </bean>
42     
43     <!-- 配置velocity -->
44     <bean id="velocityConfigurer" class="org.springframework.web.servlet.view.velocity.VelocityConfigurer">
45         <property name="resourceLoaderPath">
46             <value>WEB-INF/templates/</value>
47         </property>
48         <property name="velocityProperties">
49             <props>
50                 <prop key="input.encoding">UTF-8</prop>
51                 <prop key="output.encoding">UTF-8</prop>
52             </props>
53         </property>
54     </bean>
55     <bean id="viewResolver" class="org.springframework.web.servlet.view.velocity.VelocityViewResolver"> 
56         <property name="suffix" value=".vm" /> 
57         <property name="contentType" value="text/html;charset=utf-8" />  
58         <property name="dateToolAttribute" value="date"/>
59         <property name="numberToolAttribute" value="number"/>
60     </bean>
61 </beans>
View Code

注意:这里对包名的体现,由于直接使用spring.xml去读ssmm0的 pom.xml了,所以jdbc.properties文件就不要了,在spring.xml中,指定文件位置的<context:property-placeholder>标签就删掉了

web.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
 5 
 6     <servlet>
 7         <servlet-name>dispatcherServlet</servlet-name>
 8         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 9         <init-param>
10             <param-name>contextConfigLocation</param-name>
11             <param-value>classpath:spring.xml</param-value>
12         </init-param>
13         <load-on-startup>1</load-on-startup>
14     </servlet>
15     <servlet-mapping>
16         <servlet-name>dispatcherServlet</servlet-name>
17         <url-pattern>/</url-pattern>
18     </servlet-mapping>
19 
20     <filter>
21         <filter-name>encodingFilter</filter-name>
22         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
23         <init-param>
24             <param-name>encoding</param-name>
25             <param-value>UTF-8</param-value>
26         </init-param>
27         <init-param>
28             <param-name>forceEncoding</param-name>
29             <param-value>true</param-value>
30         </init-param>
31     </filter>
32     <filter-mapping>
33         <filter-name>encodingFilter</filter-name>
34         <url-pattern>/*</url-pattern>
35     </filter-mapping>
36 
37     <welcome-file-list>
38         <welcome-file>/index.jsp</welcome-file>
39     </welcome-file-list>
40 </web-app>
View Code

com.xxx.web.admin.AdminController

 1 package com.xxx.web.admin;
 2 
 3 import org.springframework.beans.factory.annotation.Autowired;
 4 import org.springframework.stereotype.Controller;
 5 import org.springframework.web.bind.annotation.RequestMapping;
 6 import org.springframework.web.bind.annotation.RequestParam;
 7 import org.springframework.web.bind.annotation.ResponseBody;
 8 import org.springframework.web.servlet.ModelAndView;
 9 
10 import com.xxx.model.userManagement.Admin;
11 import com.xxx.service.userManagement.AdminService;
12 
13 /**
14  * adminController
15  */
16 @Controller
17 @RequestMapping("/admin")
18 public class AdminController {
19     
20     @Autowired
21     private AdminService adminService;
22     
23     /**
24      * 管理员注册
25      */
26     @ResponseBody
27     @RequestMapping("/register")
28     public boolean register(@RequestParam("username") String username,
29                             @RequestParam("password") String password){
30         Admin admin = new Admin();
31         admin.setUsername(username);
32         admin.setPassword(password);
33         
34         boolean isRegisterSuccess = adminService.register(admin);
35         
36         return isRegisterSuccess;
37     }
38     
39     /**
40      * 管理员登录
41      */
42     @RequestMapping("/login")
43     public ModelAndView login(@RequestParam("username") String username,
44                               @RequestParam("password") String password){
45         Admin admin = adminService.login(username, password);
46         
47         ModelAndView modelAndView = new ModelAndView();
48         if(admin == null){
49             modelAndView.addObject("message", "用户不存在或者密码错误!请重新输入");
50             modelAndView.setViewName("error");
51         }else{
52             modelAndView.addObject("admin", admin);
53             modelAndView.setViewName("userinfo");
54         }
55         
56         return modelAndView;
57     }
58 }
View Code

error.vm

 1 <!DOCTYPE html>
 2 <html lang="zh-cn">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>登录失败</title>
 6 </head>
 7 <body>
 8     <div>
 9         $message
10     </div>
11 </body>
12 </html>
View Code

userinfo.vm

 1 <!DOCTYPE html>
 2 <html lang="zh-cn">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>登录成功</title>
 6 </head>
 7 <body>
 8     <div>
 9         id:$admin.id
10         username:$admin.username
11         password:$admin.password
12     </div>
13 </body>
14 </html>
View Code

具体测试过程:

  • 直接运行jetty的话,会发现连不上数据库服务器99.99.99.999,这是因为默认启动服务器之后,我们使用的是prod的一套env,这套env中的数据库服务器是我自己乱写的:99.99.99.999
  • 这时候,在ssmm0-userManagement项目上右击-->"Build Path"-->"Configure Build Path"-->"Maven"-->修改env,如下图所示,这样就切换到了dev的env下,之后再运行jetty,如果依旧不行的话,就采用ssmm0的pom.xml文件中我写的那块注释的方法。

这样,一个基本上就是企业中开发常用的结构的项目就完成了,这个项目非常重要,一定自己试着去写一个,一定要仔细看其中的每一条注释。

 

posted on 2016-01-08 22:38  赵计刚  阅读(2718)  评论(4编辑  收藏  举报