spring 框架搭建

Luoooo
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原文链接： blog.csdn.net

最近项目中用到了ssi+spring-security 的结构，自己在家搭建了一下这套环境。仅作记录。

项目结构：

类文件：                                                                                                             配置文件：                                                                                

视图：

使用的maven作为依赖管理，

以下为pom文件，包含所有项目所需jar 文件：

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  1. < project xmlns ="http://maven.apache.org/POM/4.0.0"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
  2.     xsi:schemaLocation ="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd" >  
  3.     < modelVersion>4.0.0 </modelVersion>   
  4.     < groupId>archgroup </groupId>   
  5.     < artifactId>archbase </artifactId>   
  6.     < packaging>war </packaging>   
  7.     < version>0.0.1-SNAPSHOT </version>   
  8.     < name>archbase Maven Webapp </name>   
  9.     < url>http://maven.apache.org </url>   
  10.     < repositories>  
  11.         < repository>  
  12.             < id>spring-milestones </id>   
  13.             < name>Spring Milestones </name>   
  14.             < url>http://repo.spring.io/milestone </url>   
  15.             < snapshots>  
  16.                 < enabled>false </enabled>   
  17.             </ snapshots>  
  18.         </ repository>  
  19.     </ repositories>  
  20.     < properties>  
  21.         < org.springframework-version>4.1.0.RELEASE </org.springframework-version>   
  22.         < org.mabatis-version>3.2.8 </org.mabatis-version>   
  23.         < org.springframework.security-version>3.2.5.RELEASE </org.springframework.security-version>   
  24.         < org.aspectj-version>1.8.1 </org.aspectj-version>   
  25.         < org.slf4j-version>1.6.1 </org.slf4j-version>   
  26.     </ properties>  
  27.     < dependencies>  
  28.         <!-- Spring -->   
  29.         < dependency>  
  30.             < groupId>org.springframework </groupId>   
  31.             < artifactId>spring-context </artifactId>   
  32.             < version>${org.springframework-version} </version>   
  33.             < exclusions>  
  34.                 <!-- Exclude Commons Logging in favor of SLF4j -->   
  35.                 < exclusion>  
  36.                     < groupId>commons-logging </groupId>   
  37.                     < artifactId>commons-logging </artifactId>   
  38.                 </ exclusion>  
  39.             </ exclusions>  
  40.         </ dependency>  
  41.         < dependency>  
  42.             < groupId>org.springframework </groupId>   
  43.             < artifactId>spring-jdbc </artifactId>   
  44.             < version>${org.springframework-version} </version>   
  45.         </ dependency>  
  46.         < dependency>  
  47.             < groupId>org.springframework </groupId>   
  48.             < artifactId>spring-webmvc </artifactId>   
  49.             < version>${org.springframework-version} </version>   
  50.         </ dependency>  
  51.         <!-- AspectJ -->   
  52.         < dependency>  
  53.             < groupId>org.aspectj </groupId>   
  54.             < artifactId>aspectjrt </artifactId>   
  55.             < version>${org.aspectj-version} </version>   
  56.         </ dependency>  
  57.         < dependency>  
  58.             < groupId>org.aspectj </groupId>   
  59.             < artifactId>aspectjweaver </artifactId>   
  60.             < version>1.8.4 </version>   
  61.         </ dependency>  
  62.         <!-- Logging -->   
  63.         < dependency>  
  64.             < groupId>org.slf4j </groupId>   
  65.             < artifactId>slf4j-api </artifactId>   
  66.             < version>${org.slf4j-version} </version>   
  67.         </ dependency>  
  68.         < dependency>  
  69.             < groupId>org.slf4j </groupId>   
  70.             < artifactId>jcl-over-slf4j </artifactId>   
  71.             < version>${org.slf4j-version} </version>   
  72.             < scope>runtime </scope>   
  73.         </ dependency>  
  74.         < dependency>  
  75.             < groupId>org.slf4j </groupId>   
  76.             < artifactId>slf4j-log4j12 </artifactId>   
  77.             < version>${org.slf4j-version} </version>   
  78.             < scope>runtime </scope>   
  79.         </ dependency>  
  80.         < dependency>  
  81.             < groupId>log4j </groupId>   
  82.             < artifactId>log4j </artifactId>   
  83.             < version>1.2.16 </version>   
  84.             < scope>runtime </scope>   
  85.         </ dependency>  
  86.   
  87.         <!-- @Inject -->   
  88.         < dependency>  
  89.             < groupId>javax.inject </groupId>   
  90.             < artifactId>javax.inject </artifactId>   
  91.             < version>1 </version>   
  92.         </ dependency>  
  93.   
  94.         < dependency>  
  95.             < groupId>mysql </groupId>   
  96.             < artifactId>mysql-connector-java </artifactId>   
  97.             < version>5.1.34 </version>   
  98.         </ dependency>  
  99.         < dependency>  
  100.             < groupId>org.mybatis </groupId>   
  101.             < artifactId>mybatis </artifactId>   
  102.             < version>${org.mabatis-version} </version>   
  103.         </ dependency>  
  104.         < dependency>  
  105.             < groupId>org.mybatis </groupId>   
  106.             < artifactId>mybatis-spring </artifactId>   
  107.             < version>1.2.2 </version>   
  108.         </ dependency>  
  109.         < dependency>  
  110.             < groupId>commons-dbcp </groupId>   
  111.             < artifactId>commons-dbcp </artifactId>   
  112.             < version>1.4 </version>   
  113.         </ dependency>  
  114.         < dependency>  
  115.             < groupId>javax.servlet </groupId>   
  116.             < artifactId>jstl </artifactId>   
  117.             < version>1.2 </version>   
  118.         </ dependency>  
  119.   
  120.         <!-- Servlet -->   
  121. <!--         < dependency>  
  122.             < groupId>org.apache.tomcat </groupId>   
  123.             < artifactId>tomcat-servlet-api </artifactId>   
  124.             < version>7.0.30 </version>   
  125.             < scope>provided </scope>   
  126.         </ dependency>  
  127.         < dependency>  
  128.             < groupId>javax.servlet.jsp </groupId>   
  129.             < artifactId>jsp-api </artifactId>   
  130.             < version>2.1 </version>   
  131.             < scope>provided </scope>   
  132.         </ dependency>  
  133.         < dependency>  
  134.             < groupId>javax.servlet.jsp.jstl </groupId>   
  135.             < artifactId>jstl-api </artifactId>   
  136.             < version>1.2 </version>   
  137.             < exclusions>  
  138.                 < exclusion>  
  139.                     < groupId>javax.servlet </groupId>   
  140.                     < artifactId>servlet-api </artifactId>   
  141.                 </ exclusion>  
  142.             </ exclusions>  
  143.         </ dependency>  
  144.         < dependency>  
  145.             < groupId>org.glassfish.web </groupId>   
  146.             < artifactId>jstl-impl </artifactId>   
  147.             < version>1.2 </version>   
  148.             < exclusions>  
  149.                 < exclusion>  
  150.                     < groupId>javax.servlet </groupId>   
  151.                     < artifactId>servlet-api </artifactId>   
  152.                 </ exclusion>  
  153.             </ exclusions>  
  154.         </ dependency> -- >  
  155.   
  156.         <!-- File Upload -->   
  157.         < dependency>  
  158.             < groupId>commons-fileupload </groupId>   
  159.             < artifactId>commons-fileupload </artifactId>   
  160.             < version>1.2.2 </version>   
  161.         </ dependency>  
  162.         < dependency>  
  163.             < groupId>commons-io </groupId>   
  164.             < artifactId>commons-io </artifactId>   
  165.             < version>2.0.1 </version>   
  166.         </ dependency>  
  167.   
  168.         <!-- Security -->   
  169.         < dependency>  
  170.             < groupId>org.springframework.security </groupId>   
  171.             < artifactId>spring-security-web </artifactId>   
  172.             < version>${org.springframework.security-version} </version>   
  173.         </ dependency>  
  174.         < dependency>  
  175.             < groupId>org.springframework.security </groupId>   
  176.             < artifactId>spring-security-config </artifactId>   
  177.             < version>${org.springframework.security-version} </version>   
  178.         </ dependency>  
  179.         <!-- Test -->   
  180.         < dependency>  
  181.             < groupId>junit </groupId>   
  182.             < artifactId>junit </artifactId>   
  183.             < version>3.8.1 </version>   
  184.             < scope>test </scope>   
  185.         </ dependency>  
  186.     </ dependencies>  
  187.     < build>  
  188.         < finalName>archbase </finalName>   
  189.     </ build>  
  190. </ project>  

spring 与mybatis 集成主要配置数据源、事务管理、sqlSessionFactory 以及sqlSession

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  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"  
  4.     xmlns:context ="http://www.springframework.org/schema/context"  
  5.      xmlns:tx ="http://www.springframework.org/schema/tx"  
  6.      xmlns:aop ="http://www.springframework.org/schema/aop"  
  7.     xsi:schemaLocation ="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
  8.     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd  
  9.           http://www.springframework.org/schema/tx  
  10.         http://www.springframework.org/schema/tx/spring-tx-3.0.xsd  
  11.          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
  12.     ">   
  13.       
  14.     < context:property-placeholder location ="classpath:system-config.properties"/>   
  15.     <!-- 数据源  -->   
  16.     < bean id ="dataSource"  class="org.apache.commons.dbcp.BasicDataSource" >  
  17.         < property name ="driverClassName"  value="${driver}" ></property >  
  18.         < property name ="url"  value="${url}" ></property >  
  19.         < property name ="username"  value="${username}" ></property >  
  20.         < property name ="password"  value="${password}" ></property >  
  21.     </ bean>  
  22.       
  23.     <!--  事务管理配置 -->   
  24.     < bean id ="transactionManager"  class="org.springframework.jdbc.datasource.DataSourceTransactionManager" >  
  25.         < property name ="dataSource"  ref="dataSource" ></property >  
  26.     </ bean>  
  27.       
  28.     < tx:advice id ="txAdvice"  transaction-manager="transactionManager" >  
  29.         < tx:attributes >   
  30.             < tx:method name ="query*"  propagation="REQUIRED"  />  
  31.             < tx:method name ="insert*"  propagation="REQUIRED"  />  
  32.             < tx:method name ="update*"  propagation="REQUIRED"  />  
  33.         </ tx:attributes>  
  34.     </ tx:advice>  
  35.       
  36.     < aop:config >   
  37.         < aop:pointcut expression ="execution(* com.arch.service.*.*(..))"  id="service" />  
  38.         < aop:advisor advice-ref ="txAdvice"  pointcut-ref="service" />  
  39.     </ aop:config>  
  40.       
  41.     <!-- 与mybatis集成  -->   
  42.     < bean id ="sqlSessionFactory"  class="org.mybatis.spring.SqlSessionFactoryBean" >  
  43.         < property name ="dataSource"  ref="dataSource" ></property >  
  44.         < property name ="configLocation"  value="classpath:mybatis/mybatis-config.xml" ></property >  
  45.         <!-- mybatis配置文件自动扫描路径  -->   
  46.         < property name ="mapperLocations"  value="classpath:com/arch/dao/*/*.xml" ></property >  
  47.     </ bean>  
  48.       
  49.     < bean id ="sqlSession"  class="org.mybatis.spring.SqlSessionTemplate" >  
  50.         < constructor-arg index ="0"  name="sqlSessionFactory"  ref= "sqlSessionFactory"></constructor-arg >  
  51.           
  52.     </ bean>  
  53.       
  54.     <!-- dao -->   
  55.     < bean id ="commonDao"  class="com.arch.dao.CommonDao" >  
  56.         < property name ="sqlSession"  ref="sqlSession" ></property >  
  57.     </ bean>  
  58.       
  59.       
  60. </ beans>  


springmvc使用注解，所以只需要配置扫描路径，视图处理器

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  1. <!-- Maps '/' requests to the 'home' view -->   
  2. < mvc:view-controller path ="/"  view-name="index" />  
  3.   
  4. < context:component-scan base-package ="com.arch.view"  />  

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  1. <!-- Enables the Spring MVC @Controller programming model -->   
  2. < mvc:annotation-driven/>  
  3.   
  4. < resources mapping ="/views/**"  location="/views/"  />  
  5.   
  6. <!-- Resolves views selected for rendering by @Controllers to .jsp resources   
  7.     in the /views directory -->   
  8. < beans:bean  
  9.     class ="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  10.     < beans:property name ="prefix"  value="/views/"  />  
  11.     < beans:property name ="suffix"  value=".jsp"  />  
  12. </ beans:bean>  
  13.   
  14. <!-- Only needed because we require fileupload in the org.springframework.samples.mvc.fileupload   
  15.     package -->   
  16. < beans:bean id ="multipartResolver"  
  17.     class ="org.springframework.web.multipart.commons.CommonsMultipartResolver"  />  
  18.   
  19. <!-- Imports user-defined @Controller beans that process client requests -->   
  20. < beans:import resource ="controllers.xml"  />  
  21.   
  22. < task:annotation-driven />   


spring security 使用了自定义的user-service 以及csrf过滤器：

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  1. < beans:beans xmlns ="http://www.springframework.org/schema/security"  
  2.     xmlns:beans ="http://www.springframework.org/schema/beans"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
  3.     xsi:schemaLocation ="http://www.springframework.org/schema/beans  
  4.            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
  5.            http://www.springframework.org/schema/security  
  6.            http://www.springframework.org/schema/security/spring-security.xsd">   
  7.     <!-- 登录界面不使用权限过滤 -->   
  8.     < http security ="none"  pattern="/login*" ></http >  
  9.     < http>  
  10.         < http-basic />   
  11.         < intercept-url pattern ="/**"  access="ROLE_USER"  />  
  12.   
  13.         <!-- 登录界面 -->   
  14.         < form-login login-page ="/login"  default-target-url="/index"   
  15.             always-use-default-target ="true"  />  
  16.         < logout />   
  17.         < csrf />   
  18.     </ http>  
  19.   
  20.     <!-- 自定义user-service -->   
  21.     < beans:bean id ="userDetailService"  class="com.arch.security.UserDetailService" ></beans:bean >  
  22.   
  23.     <!-- 自定义权限管理，使用自己的user-service -->   
  24.     < authentication-manager>  
  25.         < authentication-provider user-service-ref ="userDetailService"> </authentication-provider>   
  26.     </ authentication-manager>  
  27.   
  28.     <!-- CSRF protection. Here we only include the CsrfFilter instead of all   
  29.         of Spring Security. See http://docs.spring.io/spring-security/site/docs/3.2.x/reference/htmlsingle/#csrf   
  30.         for more information on Spring Security's CSRF protection -->   
  31.     < beans:bean id ="csrfFilter"  class="org.springframework.security.web.csrf.CsrfFilter" >  
  32.         < beans:constructor-arg>  
  33.             < beans:bean  
  34.                 class ="org.springframework.security.web.csrf.HttpSessionCsrfTokenRepository"  />  
  35.         </ beans:constructor-arg>  
  36.     </ beans:bean>  
  37.     <!-- Provides automatic CSRF token inclusion when using Spring MVC Form   
  38.         tags or Thymeleaf. -->   
  39.     < beans:bean id ="requestDataValueProcessor"  
  40.         class ="org.springframework.security.web.servlet.support.csrf.CsrfRequestDataValueProcessor"  />  
  41. </ beans:beans>   

然后就是web.xml文件了,spring 所需要的contextLoaderListener，spring-mvc需要的dispatchServlet 以及 spring-security和csrf所需要的两个过滤器

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  1. <? xml version ="1.0"  encoding="UTF-8" ?>  
  2. < web-app xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"  
  3.     xmlns ="http://java.sun.com/xml/ns/javaee"  
  4.     xsi:schemaLocation ="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"   
  5.     id ="WebApp_ID"  version="3.0" >  
  6.   < display-name>Archetype Created Web Application </display-name>   
  7.   < context-param>  
  8.         < param-name>contextConfigLocation </param-name>   
  9.         < param-value>/WEB-INF/classes/spring/root-context.xml </param-value>   
  10.     </ context-param>  
  11.   
  12.     <!-- Creates the Spring Container shared by all Servlets and Filters -->   
  13.     < listener>  
  14.         < listener-class>org.springframework.web.context.ContextLoaderListener </listener-class>   
  15.     </ listener>  
  16.     < filter>  
  17.         < filter-name>springSecurityFilterChain </filter-name>   
  18.         < filter-class>org.springframework.web.filter.DelegatingFilterProxy </filter-class>   
  19.     </ filter>  
  20.     < filter-mapping>  
  21.         < filter-name>springSecurityFilterChain </filter-name>   
  22.         < url-pattern>/* </url-pattern>   
  23.     </ filter-mapping>  
  24.   
  25.     < filter>  
  26.         < filter-name>csrfFilter </filter-name>   
  27.         < filter-class>org.springframework.web.filter.DelegatingFilterProxy </filter-class>   
  28.         < async-supported>true </async-supported>   
  29.     </ filter>  
  30.     < filter-mapping>  
  31.         < filter-name>csrfFilter </filter-name>   
  32.         < url-pattern>/* </url-pattern>   
  33.     </ filter-mapping>  
  34.   
  35.     <!-- Processes application requests -->   
  36.     < servlet>  
  37.         < servlet-name>appServlet </servlet-name>   
  38.         < servlet-class>org.springframework.web.servlet.DispatcherServlet </servlet-class>   
  39.         < init-param>  
  40.             < param-name>contextConfigLocation </param-name>   
  41.             < param-value>/WEB-INF/classes/springweb/servlet-context.xml </param-value>   
  42.         </ init-param>  
  43.         < load-on-startup>1 </load-on-startup>   
  44.         < async-supported>true </async-supported>   
  45.     </ servlet>  
  46.   
  47.     < servlet-mapping>  
  48.         < servlet-name>appServlet </servlet-name>   
  49.         < url-pattern>/ </url-pattern>   
  50.     </ servlet-mapping>  
  51. </ web-app>  

然后就是mybatis的mapper文件：

userMapping.xml

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  1. <? xml version ="1.0"  encoding="UTF-8"  ?>    
  2. <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">    
  3. < mapper namespace ="user.mapper">   
  4.     < select id ="countAll"  resultType="int" >  <!-- 查询表中记录总数 -->   
  5.         select count(*) c from tb_user;  
  6.     </ select>  
  7.       
  8.     < select id ="selectAll"  resultType="com.arch.domain.UserInfoVo" >    <!-- 查询表中的所有用户 -->   
  9.         select * from tb_user order by username asc  
  10.     </ select>  
  11.       
  12.     < insert id ="insert"  parameterType="com.arch.domain.UserInfoVo" >    <!-- 向数据库中插入用户 -->   
  13.         insert into tb_user(id,username,password) values(#{id},#{username},#{password})  
  14.     </ insert>  
  15.       
  16.     < update id ="update"  parameterType="com.arch.domain.UserInfoVo" >     <!-- 更新库中的用户 -->   
  17.         update tb_user set username =#{username},password=#{password} where  username=#{username}  
  18.     </ update>  
  19.       
  20.     < delete id ="delete"  parameterType="String" >    <!-- 删除用户 -->   
  21.         delete from tb_user where username =#{username}  
  22.     </ delete>  
  23.       
  24.     < select id ="findByUserName"  parameterType="String"  resultType= "com.arch.domain.UserInfoVo">  <!-- 根据用户名查找用户 -->  
  25.         select * from tb_user where username =#{username}  
  26.     </ select>  
  27. </ mapper>  


配置到这里就已经完成了，然后就是类文件：

CommonDao:

[java] view plain copy  在CODE上查看代码片 派生到我的代码片
  1. public  class CommonDao {  
  2.       
  3.     private  SqlSession sqlSession;  
  4.       
  5.     public  void setSqlSession(SqlSession sqlSession) {  
  6.         this .sqlSession = sqlSession;  
  7.     }  
  8.   
  9.     public  List selectList(String statement, Object parameter ){  
  10.         return  sqlSession.selectList(statement, parameter);  
  11.     }  
  12.       
  13.     public  int insert(String statement, Object parameter){  
  14.         return  sqlSession.insert(statement, parameter);  
  15.     }  
  16.   
  17. }  

UserInfoVo

[java] view plain copy  在CODE上查看代码片 派生到我的代码片
  1. @Repository   
  2. public  class UserInfoVo  implements UserDetails{  
  3.     private  static  final long  serialVersionUID = -739110967197874283L;  
  4.     private  String id;  
  5.     private  String username;  
  6.     private  String password;  
  7.     public  String getId() {  
  8.         return  id;  
  9.     }  
  10.     public  void setId(String id) {  
  11.         this .id = id;  
  12.     }  
  13.     public  String getUsername() {  
  14.         return  username;  
  15.     }  
  16.     public  void setUsername(String username) {  
  17.         this .username = username;  
  18.     }  
  19.     public  String getPassword() {  
  20.         return  password;  
  21.     }  
  22.     public  void setPassword(String password) {  
  23.         this .password = password;  
  24.     }  
  25.     @Override   
  26.     public  String toString() {  
  27.         return  "UserInfoVo [username=" + username +  ", password=" + password  
  28.                 + "]" ;  
  29.     }  
  30.     public  Collection<? extends GrantedAuthority> getAuthorities() {  
  31.         /** 
  32.          * 测试，写死了角色 
  33.          */   
  34.         List<SimpleGrantedAuthority> authos = new  ArrayList<>();  
  35.         SimpleGrantedAuthority sim = new  SimpleGrantedAuthority("ROLE_USER");  
  36.         authos.add(sim);  
  37.         return  authos;  
  38.     }  
  39.     public  boolean isAccountNonExpired() {  
  40.         return  true;  
  41.     }  
  42.     public  boolean isAccountNonLocked() {  
  43.         return  true;  
  44.     }  
  45.     public  boolean isCredentialsNonExpired() {  
  46.         return  true;  
  47.     }  
  48.     public  boolean isEnabled() {  
  49.         return  true;  
  50.     }  
  51.   
  52. }  

UserDetailService:

[java] view plain copy  在CODE上查看代码片 派生到我的代码片
  1. /** 
  2.  * 这里传过来用户名，需要在此作验证，并返回实现了UserDetails接口的用户VO 
  3.  */   
  4. @Override   
  5. public  UserDetails loadUserByUsername(String username){  
  6.     UserInfoVo user = new  UserInfoVo();  
  7.     System.out.println(user);  
  8.     user.setUsername(username);  
  9.     user.setPassword("admin" );  
  10.     return  user;  
  11. }  

userServiceImpl:

[java] view plain copy  在CODE上查看代码片 派生到我的代码片
  1. @Service ("userService")  
  2. public  class UserServiceImpl  implements UserService {  
  3.       
  4.     @Autowired   
  5.     private  CommonDao dao;  
  6.       
  7.     public  List<UserInfoVo> listAll(UserInfoVo user) {  
  8.         List<UserInfoVo> users = dao.selectList("user.mapper.selectAll" , user);  
  9.         return  users;  
  10.     }  
  11.   
  12.     public  int insert(UserInfoVo user) {  
  13.         int  i = dao.insert("user.mapper.insert", user);  
  14.         return  i;  
  15.     }  
  16. }  


LoginController:

[java] view plain copy  在CODE上查看代码片 派生到我的代码片
  1. @Controller   
  2. public  class LoginController {  
  3.   
  4.     @Inject   
  5.     private  UserService userService;  
  6.     @RequestMapping ("index")  
  7.     public  String index(){  
  8.         List<UserInfoVo> users = userService.listAll(new  UserInfoVo());  
  9.         for (UserInfoVo u : users){  
  10.             System.out.println(u);  
  11.         }  
  12.         return  "index";  
  13.     }  
  14.       
  15.     @RequestMapping ("login")  
  16.     public  String login(){  
  17.           
  18.         return  "login";  
  19.     }  
  20. }  


以上。

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