一、創建 SSMVCAnnoDemo 項目

點擊菜單，選擇“File -> New Project” 創建新項目。選擇使用 archetype 中的 maven-webapp 模版創建。

輸入對應的項目坐標GroupId 和 ArtifactId

之后在項目名稱中填入項目名稱，這里我填的 ProjectName 和上文的 ArtifactId 相同，都是 SSMVCAnnoDemo。

點擊確定后，等待 Maven 幫我們構建好項目的目錄結構。當控制臺顯示 BUILD SUCCESS 就表示初始化完成了。

初始化完成后的目錄結構是這樣的：

在 main 目錄下創建 java 目錄并將其設置為源碼目錄：

之后創建 com.chanshuyi.action 等包，創建完成后的目錄結構如下：

二、導入依賴的包和插件

設置 POM.XML 配置文件中的全局屬性：

<!-- 聲明全局屬性 --> <properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><struts.version>2.3.24</struts.version><springframework.version>4.1.6.RELEASE</springframework.version><junit.version>3.8.1</junit.version><commonsLogging.version>1.2</commonsLogging.version> </properties>

依次引入 MyBatis、Spring、SpringMVC、MySQL、Druid、JUnit、Log4J 等的依賴 Jar 包：

<!-- ********************** MyBatis ********************** --> <!-- MyBatis 核心包 --> <dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.1.1</version> </dependency> <!-- 添加mybatis與Spring整合的核心包 --> <dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.1.1</version> </dependency><!-- ********************** Spring ********************** --> <!-- Spring MVC 依賴 --> <dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${springframework.version}</version> </dependency> <!-- 添加Spring-core包 --> <dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${springframework.version}</version> </dependency> <!-- 添加spring-tx包 --> <dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${springframework.version}</version> </dependency> <!-- Spring ORM 相關--> <dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${springframework.version}</version> </dependency> <!-- 添加spring-jdbc包 --> <dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${springframework.version}</version> </dependency> <!--添加spring-web包 --> <dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${springframework.version}</version> </dependency> <!-- 添加spring-context包 --> <dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${springframework.version}</version> </dependency> <dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${springframework.version}</version> </dependency> <dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>${commonsLogging.version}</version> </dependency> <!--添加aspectjweaver包 --> <dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.5</version> </dependency><!-- ********************** Spring MVC 依賴的jar包 **********************--> <dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version> </dependency> <dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>1.1.2</version> </dependency> <!-- Servelt API --> <dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.0.1</version><scope>provided</scope> </dependency><!-- ********************** DB Connection ********************** --> <dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.21</version> </dependency> <!-- Druid --> <dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.0.6</version> </dependency><!-- ********************** 其他 ********************** --> <!-- 單元測試 JUnit --> <dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version><scope>test</scope> </dependency> <!-- 日志記錄 Log4j --> <dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.6</version> </dependency> <dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.6</version> </dependency>

之后導入 Tomcat 啟動插件，我們將通過 Maven 方式啟動 Tomcat，這樣就不必在本地配置一個 Tomcat 服務器。

<!-- Maven的Tomcat插件（支持Maven以"tomcat7:run"方式啟動web項目） --> <plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.1</version><configuration><port>5050</port><path>/</path><uriEncoding>UTF-8</uriEncoding><finalName>mgr</finalName><server>tomcat7</server></configuration> </plugin>

配置完成后的 POM.XML 是這樣的：

<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.chanshuyi.SSMVCAnnoDemo</groupId><artifactId>SSMVCAnnoDemo</artifactId><packaging>war</packaging><version>1.0-SNAPSHOT</version><name>SSMVCAnnoDemo Maven Webapp</name><url>http://maven.apache.org</url><!-- 聲明全局屬性 --><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><struts.version>2.3.24</struts.version><springframework.version>4.1.6.RELEASE</springframework.version><junit.version>3.8.1</junit.version><commonsLogging.version>1.2</commonsLogging.version></properties><dependencies><!-- ********************** MyBatis ********************** --><!-- MyBatis 核心包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.1.1</version></dependency><!-- 添加mybatis與Spring整合的核心包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.1.1</version></dependency><!-- ********************** Spring ********************** --><!-- Spring MVC 依賴 --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${springframework.version}</version></dependency><!-- 添加Spring-core包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${springframework.version}</version></dependency><!-- 添加spring-tx包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${springframework.version}</version></dependency><!-- Spring ORM 相關--><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${springframework.version}</version></dependency><!-- 添加spring-jdbc包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${springframework.version}</version></dependency><!--添加spring-web包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${springframework.version}</version></dependency><!-- 添加spring-context包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${springframework.version}</version></dependency><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>${commonsLogging.version}</version></dependency><!--添加aspectjweaver包 --><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.5</version></dependency><!-- ********************** Spring MVC 依賴的jar包 **********************--><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><dependency><groupId>taglibs</groupId><artifactId>standard</artifactId><version>1.1.2</version></dependency><!-- Servelt API --><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.0.1</version><scope>provided</scope></dependency><!-- ********************** DB Connection ********************** --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.21</version></dependency><!-- Druid --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.0.6</version></dependency><!-- ********************** 其他 ********************** --><!-- 單元測試 JUnit --><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>${junit.version}</version><scope>test</scope></dependency><!-- 日志記錄 Log4j --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.6</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.6</version></dependency></dependencies><build><finalName>SSMVCAnnoDemo</finalName><plugins><!-- Maven的Tomcat插件（支持Maven以"tomcat7:run"方式啟動web項目） --><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.1</version><configuration><port>5050</port><path>/</path><uriEncoding>UTF-8</uriEncoding><finalName>mgr</finalName><server>tomcat7</server></configuration></plugin></plugins></build> </project> pom.xml

三、開發模型層（MyBatis）

創建 SpringMVC 配置文件 resources/spring-servlet.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"xmlns:p="http://www.springframework.org/schema/p"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"default-lazy-init="true"><!-- 添加注解驅動 --><mvc:annotation-driven /><!-- 默認掃描的包路徑 --><context:component-scan base-package="com.chanshuyi.controller, com.chanshuyi.service.impl, com.chanshuyi.dao.impl" /><!-- mvc:view-controller可以在不需要Controller處理request的情況，轉向到設置的View --><!-- 像下面這樣設置，如果請求為/，則不通過controller，而直接解析為/index.jsp --><!--<mvc:view-controller path="/" view-name="index" />--><!-- 配置 SpringMVC Controller 轉發JSP頁面的路徑 --><bean class="org.springframework.web.servlet.view.UrlBasedViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property><!-- 配置jsp路徑前綴 --><property name="prefix" value="/"></property><!-- 配置URl后綴 --><property name="suffix" value=".jsp"></property></bean><!-- ================================== import sub-config file ================================== --><import resource="spring-mybatis.xml" /><!-- ================================== /import sub-config file ================================== --> </beans>

創建 spring-mybatis.xml 文件，配置一個只讀的數據源以及一個只寫的數據源

<?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"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"><!-- 引入外部properties文件 --><context:property-placeholder location="classpath:jdbc.properties" /><!-- ====================================================== Add MyBatis Support Start ====================================================== --><!-- 配置寫數據源 --><bean id="dataSourceWrite" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"><!-- 基本屬性 url、user、password --><property name="url" value="${jdbc.master.url}" /><property name="username" value="${jdbc.master.username}" /><property name="password" value="${jdbc.master.password}" /><!-- 配置初始化大小、最小、最大 --><property name="initialSize" value="${jdbc.master.initialSize}" /><property name="minIdle" value="${jdbc.master.minIdle}" /><property name="maxActive" value="${jdbc.master.maxActive}" /><!-- 配置獲取連接等待超時的時間 --><property name="maxWait" value="60000" /><!-- 配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒 --><property name="timeBetweenEvictionRunsMillis" value="60000" /><!-- 配置一個連接在池中最小生存的時間，單位是毫秒 --><property name="minEvictableIdleTimeMillis" value="300000" /><property name="validationQuery" value="SELECT '1'" /><property name="testWhileIdle" value="true" /><property name="testOnBorrow" value="true" /><property name="testOnReturn" value="false" /><!-- 打開PSCache，并且指定每個連接上PSCache的大小 mysql false --><property name="poolPreparedStatements" value="false" /><property name="maxPoolPreparedStatementPerConnectionSize" value="20" /><!-- 配置監控統計攔截的filters --><property name="filters" value="config,stat,log4j,wall" /><property name="connectionProperties" value="config.decrypt=false" /></bean><!-- 配置讀數據源 --><bean id="dataSourceRead" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"><!-- 基本屬性 url、user、password --><property name="url" value="${jdbc.slave.url}" /><property name="username" value="${jdbc.slave.username}" /><property name="password" value="${jdbc.slave.password}" /><!-- 配置初始化大小、最小、最大 --><property name="initialSize" value="${jdbc.slave.initialSize}" /><property name="minIdle" value="${jdbc.slave.minIdle}" /><property name="maxActive" value="${jdbc.slave.maxActive}" /><!-- 配置獲取連接等待超時的時間 --><property name="maxWait" value="60000" /><!-- 配置間隔多久才進行一次檢測，檢測需要關閉的空閑連接，單位是毫秒 --><property name="timeBetweenEvictionRunsMillis" value="60000" /><!-- 配置一個連接在池中最小生存的時間，單位是毫秒 --><property name="minEvictableIdleTimeMillis" value="300000" /><property name="validationQuery" value="SELECT '1'" /><property name="testWhileIdle" value="true" /><property name="testOnBorrow" value="false" /><property name="testOnReturn" value="false" /><!-- 打開PSCache，并且指定每個連接上PSCache的大小 mysql false --><property name="poolPreparedStatements" value="false" /><property name="maxPoolPreparedStatementPerConnectionSize" value="20" /><!-- 配置監控統計攔截的filters --><property name="filters" value="config,stat,log4j,wall" /><property name="connectionProperties" value="config.decrypt=false" /></bean><!-- 可寫的SessionFactory --><bean id="sqlWriteSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" scope="singleton"><property name="dataSource" ref="dataSourceWrite" /><property name="configLocation" value="classpath:mybatis-config.xml" /></bean><!-- 只讀的SessionFactory --><bean id="sqlReadOnlySessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" scope="singleton"><property name="dataSource" ref="dataSourceRead" /><property name="configLocation" value="classpath:mybatis-config.xml" /></bean><!-- 可寫的Session --><bean id="writableSQLSession" class="org.mybatis.spring.SqlSessionTemplate"><constructor-arg index="0" ref="sqlWriteSessionFactory" /></bean><!-- 只讀的Session --><bean id="readonlySQLSession" class="org.mybatis.spring.SqlSessionTemplate"><constructor-arg index="0" ref="sqlReadOnlySessionFactory" /></bean><!-- ====================================================== Add MyBatis Support End ====================================================== --> </beans>

創建 jdbc.properties 配置文件

############################ MySQL/Oracle/SQLServer Database Configuratioin Info ############################### # MySQL Master DB Info jdbc.master.dialet=org.hibernate.dialect.MySQLDialect jdbc.master.driverClassName=com.mysql.jdbc.Driver jdbc.master.url=jdbc:mysql://127.0.0.1:3306/SSMDemo jdbc.master.username=root jdbc.master.password=sa# MySQL Slave DB Info jdbc.slave.dialet=org.hibernate.dialect.MySQLDialect jdbc.slave.driverClassName=com.mysql.jdbc.Driver jdbc.slave.url=jdbc:mysql://localhost:3306/SSMDemo jdbc.slave.username=root jdbc.slave.password=sa############################## Connection Pool Configuration Info ############################################## # MySQL Master DB Setting jdbc.master.initialSize = 10 jdbc.master.minIdle = 0 jdbc.master.maxActive = 30# MySQL Slave DB Setting jdbc.slave.initialSize = 10 jdbc.slave.minIdle = 0 jdbc.slave.maxActive = 30

在本地 MySQL 數據庫創建一個 SSMDemo 數據庫，執行下面的語句創建 user 表并插入一條測試數據。

CREATE TABLE `user` (`id` int(11) NOT NULL AUTO_INCREMENT,`username` varchar(45) DEFAULT NULL,`password` varchar(45) DEFAULT NULL,PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;-- ---------------------------- -- Records of user -- ---------------------------- INSERT INTO `user` VALUES ('1', 'admin', 'password');

創建 mybatis-config.xml 文件，并配置需要掃描包路徑

<?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> <mappers><!-- 配置掃描的Mapper類 --><package name="com.chanshuyi.dao.mapper"/></mappers> </configuration>

下載?MBGGenerator（密碼：c1dy），這是MyBatis 官方的 MyBatis Generator，我們使用它將數據庫表轉化成?model、mapper 以及 SqlProvider 文件。

下載文件解壓放到 resources 目錄下。進入 resources/mbg 目錄，雙擊運行?generate.bat，程序自動將配置文件 resources/mbgconfig.xml 中配置的表格映射成相對應的文件。

四、開發視圖層（Spring）

創建 resources/log4j.properties 文件，提供日志記錄。

#Console Log log4j.rootLogger=info, console, file# Write to Console log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.Threshold=INFO log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.ConversionPattern=%5p %d{MM-dd HH:mm:ss}(%F:%L): %m%n# Write to File log4j.appender.file=org.apache.log4j.DailyRollingFileAppender log4j.appender.file.File=${catalina.home}app/log/log.log log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%5p %d{MM-dd HH:mm:ss}(%F:%L): %m%n

在 com.chanshuyi.dao.mapper.UserMapper 類中增加 getUserListByMapSql 接口：

/*** 根據參數構造SQL進行查詢* @param param* @return*/ @SelectProvider(type = UserSqlProvider.class, method = "getUserListByMapSql") List<User> getUserListByMapSql(@Param("param") Map<String, String> param);

在 UserSqlProvider 類增加對上面接口 SQL 的實現：

/*** 獲取查詢SQL* @param param* @return*/ public String getUserListByMapSql(Map<String, Object> param) {StringBuilder builder = new StringBuilder();Map<String, String> realParam = (Map<String, String>)param.get("param");//add select partbuilder.append(" select * from user where 1 = 1 ");//add condition partString conditionStr = "";if(!StringUtil.isNullOrEmpty(realParam)){conditionStr = getQueryCondition(realParam);if(!StringUtil.isNullOrEmpty(conditionStr)){builder.append(conditionStr);}}return new String(builder); }public String getQueryCondition(Map<String, String> param){StringBuilder builder = new StringBuilder();//if param is null or empty, return empty Stringif(param == null || param.size() < 1){return "";}for(String key : param.keySet()){String value = param.get(key);if(value != null && !value.isEmpty()){builder.append(" and " + key + " = '" + value + "'");}}return new String(builder); }

上面用到了 StringUtil.java，我們在 com.chanshuyi.util 中導入它：

package com.mszz.util;import java.util.Collection; import java.util.Map;/*** 字符串工具類* @author chenxinquan**/ public class StringUtil {/*** 判斷對象或對象數組中每一個對象是否為空: 對象為null，字符序列長度為0，集合類、Map為empty* @author zl* @param obj* @return*/public static boolean isNullOrEmpty(Object obj) {if (obj == null)return true;if (obj instanceof CharSequence)return ((CharSequence) obj).length() == 0;if (obj instanceof Collection)return ((Collection) obj).isEmpty();if (obj instanceof Map)return ((Map) obj).isEmpty();if (obj instanceof Object[]) {Object[] object = (Object[]) obj;if (object.length == 0) {return true;}boolean empty = true;for (int i = 0; i < object.length; i++) {if (!isNullOrEmpty(object[i])) {empty = false;break;}}return empty;}return false;} }StringUtil.java View Code

創建 com.chanshuyi.dao.impl.BaseDao.java 類，提供基本的數據庫讀寫對象，并用注解方式將 SqlSession 注入。

package com.chanshuyi.dao.impl;import org.apache.ibatis.session.SqlSession; import org.springframework.beans.factory.annotation.Autowired;/*** 所有Service的基類，用來注入sqlSession*/ public class BaseDao {/*** 可寫的sqlSession*/@Autowiredprotected SqlSession writableSQLSession;/*** 只讀的sqlSession*/@Autowiredprotected SqlSession readonlySQLSession; }

創建DAO層接口 IUserDao.java：

package com.chanshuyi.dao;import com.chanshuyi.model.User;import java.util.List; import java.util.Map;/*** Created by chanshuyi on 2015/12/26.*/ public interface IUserDao {User getUserById(int userId);/**** @param param Map中的key要與數據庫表中的字段名相同* @return*/User getUserByMapSql(Map<String, String> param);List<User> getUserListByMapSql(Map<String, String> param); }

創建 UserDaoImpl.java 繼承 BaseDao.java、實現 IUserDao 接口，并用 @Repository 創建名稱為 userDao 的對象。

package com.chanshuyi.dao.impl;import com.chanshuyi.dao.IUserDao; import com.chanshuyi.dao.mapper.UserMapper; import com.chanshuyi.model.User; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.stereotype.Repository;import java.util.List; import java.util.Map;/*** Created by Administrator on 2015/12/26.*/ @Repository("userDao") public class UserDaoImpl extends BaseDao implements IUserDao {private static Log logger = LogFactory.getLog(UserDaoImpl.class);@Overridepublic User getUserById(int userId) {UserMapper mapper = readonlySQLSession.getMapper(UserMapper.class);return mapper.selectByPrimaryKey(userId);}/**** @param param* @return*/@Overridepublic User getUserByMapSql(Map<String, String> param) {logger.info("getUserByMapSql 根據動態參數查詢用戶對象");return getUserListByMapSql(param).size() > 0 ? getUserListByMapSql(param).get(0) : null;}/*** get**MapSql()類的方法只能用于各參數的等于查詢* 例如：select * from user where username = 1 and password = 3 （正確）* select * from user where username in (1,2,3) （錯誤，無法實現）* @param param* @return*/@Overridepublic List<User> getUserListByMapSql(Map<String, String> param) {logger.info("getUserListByMapSql 根據動態參數查詢用戶對象列表");UserMapper mapper = readonlySQLSession.getMapper(UserMapper.class);return mapper.getUserListByMapSql(param);} }

創建 IUserService.java 和 UserServiceImpl.java。在 UserServiceImpl 中添加 @Service 注解創建名稱為 userService 的對象，并將 userDao 對象注入。

package com.mszz.service;import com.mszz.model.User;import java.util.List; import java.util.Map;/*** Created by chanshuyi on 2015/12/26.*/ public interface IUserService {User getUserById(int userId);/**** @param param Map中的key要與數據庫表中的字段名相同* @return*/User getUserByMapSql(Map<String, String> param);List<User> getUserListByMapSql(Map<String, String> param); } package com.chanshuyi.service.impl;import com.chanshuyi.dao.IUserDao; import com.chanshuyi.model.User; import com.chanshuyi.service.IUserService; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;import java.util.List; import java.util.Map;/*** Created by Administrator on 2015/6/18.*/ @Service("userService") public class UserServiceImpl implements IUserService {private static Log logger = LogFactory.getLog(UserServiceImpl.class);@AutowiredIUserDao userDao;@Overridepublic User getUserById(int userId) {return userDao.getUserById(userId);}@Overridepublic User getUserByMapSql(Map<String, String> param) {return userDao.getUserByMapSql(param);}@Overridepublic List<User> getUserListByMapSql(Map<String, String> param) {return userDao.getUserListByMapSql(param);} }

五、開發控制層（Struts）

創建 com.chanshuyi.action.UserController 類

package com.chanshuyi.controller;import com.chanshuyi.service.IUserService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest; import java.util.HashMap; import java.util.Map;/*** Created by Administrator on 2015/6/18.*/ @Controller("userAction") @RequestMapping(value="/login") public class UserController{private static Logger logger = LoggerFactory.getLogger(UserController.class);private String message;private String username;private String password;@Autowiredprivate IUserService userService;@Autowiredprivate HttpServletRequest request;@RequestMapping("")public String login(@RequestParam(value = "username", required = false) String username,@RequestParam(value = "password", required = false) String password){try{Map<String, String> param = new HashMap<String, String>();param.put("username", username);param.put("password", password);if(userService.getUserByMapSql(param) != null){message = "登錄成功！";logger.info(message);}else{message = "登錄失敗！";logger.info(message);}}catch(Exception e){logger.warn(e.getMessage());e.printStackTrace();}request.setAttribute("message", message);return "index"; // 轉到webapp/index.jsp頁面 }/******** set/get ********/public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}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;} }

創建?webapp/index.jsp 文件

<%@page language="java" pageEncoding="UTF-8"%> <%@ page contentType="text/html;charset=utf-8" %> <%@ page isELIgnored="false"%> <html> <head><meta charset="utf-8"> </head> <body> <h2>Hello World!</h2> <%-- 通過Struts傳遞參數,數據傳遞方式必須選擇post,否則編碼錯誤! --%> <form action="login" method="post" ><p id="message">${message}</p><b>Username:</b><input type="text" id="name" name="username" /><br><b>Password:</b><input type="password" id="password" name="password"/><br><input type="submit" value="Login"/> </form> </body> </html>

修改 web.xml 文件，加載 SpringMVC 處理器

<!DOCTYPE web-app PUBLIC"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN""http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app><display-name>Archetype Created Web Application</display-name><!-- 字符集過濾器 --><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><!-- spring MVC的核心就是DispatcherServlet，使用springMVC的第一步就是將下面的servlet放入web.xmlservlet-name屬性非常重要，默認情況下，DispatchServlet會加載這個名字-servlet.xml的文件，如下，就會加載dispather-servlet.xml，也是在WEN-INF目錄下。--><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:/spring-servlet.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><!-- 設置dispatchservlet的匹配模式，通過把dispatchservlet映射到/，默認servlet會處理所有的請求，包括靜態資源 --><servlet-mapping><servlet-name>spring</servlet-name><url-pattern>/</url-pattern></servlet-mapping> </web-app>

六、啟動項目測試

為工程配置 Maven 命令 “tomcat7:run”?

點擊啟動項目

打開瀏覽器輸入：http://localhost:5050/index.jsp?

輸入 admin/password，點擊 Login 按鈕

提示登錄成功，說明項目已經成功部署好。

與 Spring 框架項目對比

因為我們一般用 SpringMVC 的時候都是用注解的形式，所以SpringMVC 框架的項目都是注解形式，沒有 XML 配置文件方式。下面我們來對比一下用 SpringMVC 和用 Spring + Struts 的實現區別。

1、使用 SpringMVC 框架時需要配置與 Spring 不同的 web.xml 配置，并且讀取的根配置文件不再是 applicationContext.xml，而是 servletName-servlet.xml（servletName 表示的是配置在 web.xml 中的servlet 名稱）。

2、因為使用了 SpringMVC，所以不再需要 Struts 來接收用戶請求，而是直接通過 @RequestMapping 注解的方式在 Controller 類上進行注解映射，也就少了 struts.xml 這個配置文件。而一般情況下用 SpringMVC 的項目更習慣于將 Action 寫成 Controller。

?

鏈接：http://pan.baidu.com/s/1gdZgyqf 密碼：vrm5

轉載于:https://www.cnblogs.com/chanshuyi/p/5160120.html

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