以前Maven+SSM都是照着搭建的,本身想寫點什麼的時候發現搭建的過程不清楚。html
因而花了時間邊整理思路邊搭建,並把搭建過程記錄下來。前端
視頻看來終覺淺,仍是須要本身動手實踐,捋順思路記憶纔會深入。java
將鼠標移動到以前建立好的demo-parent,點擊鼠標右鍵,選擇Maven->New Maven Module Project.mysql
(也可直接建立Maven Module而後指定parent。)git
建立完demo-web後會發現,報錯這時由於打包爲war,由於標準的web程序結構,github
而咱們目錄結構的webapp下缺乏WEB-INF文件夾和web.xml文件。web
web.xml內容以下所示:spring
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <display-name>demo-web</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app>
pom.xmlsql
<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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.demo</groupId> <artifactId>demo-parent</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>pom</packaging> <modules> <module>demo-dao</module> <module>demo-service</module> <module>demo-web</module> <module>demo-pojo</module> </modules> <!-- 集中定義依賴版本號 --> <properties> <junit.version>4.12</junit.version> <spring.version>4.2.4.RELEASE</spring.version> <pagehelper.version>4.0.0</pagehelper.version> <servlet-api.version>2.5</servlet-api.version> <mybatis.version>3.2.8</mybatis.version> <mybatis.spring.version>1.2.2</mybatis.spring.version> <mybatis.paginator.version>1.2.15</mybatis.paginator.version> <mysql.version>8.0.11</mysql.version> <druid.version>1.0.15</druid.version> </properties> <dependencyManagement> <dependencies> <!-- Spring --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jms</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <!-- Mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>${mybatis.spring.version}</version> </dependency> <dependency> <groupId>com.github.miemiedev</groupId> <artifactId>mybatis-paginator</artifactId> <version>${mybatis.paginator.version}</version> </dependency> <!-- MySql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <!-- 鏈接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> <dependency> <groupId>org.csource.fastdfs</groupId> <artifactId>fastdfs</artifactId> <version>1.2</version> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <!-- java編譯插件 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.2</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> </project>
<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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.demo</groupId> <artifactId>demo-parent</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>demo-dao</artifactId> <dependencies> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>4.0.0</version> </dependency> <!-- Mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> </dependency> <dependency> <groupId>com.github.miemiedev</groupId> <artifactId>mybatis-paginator</artifactId> </dependency> <!-- MySql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!-- 鏈接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> </dependency> <!-- Spring依賴 --> <!-- 1.Spring核心依賴 --> <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> <!-- 2.Spring dao依賴 --> <!-- spring-jdbc包括了一些如jdbcTemplate的工具類 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </dependency> <!-- 3.Spring web依賴 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> </dependency> <!-- 4.Spring test依賴:方便作單元測試和集成測試 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> </dependency> <!-- junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <scope>test</scope> </dependency> <!-- 依賴deme-pojo --> <dependency> <groupId>com.demo</groupId> <artifactId>demo-pojo</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> </project>
dao須要使用到pojo因此要依賴pojo.數據庫
CREATE TABLE `tb_user` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(255) DEFAULT NULL, `password` varchar(255) DEFAULT NULL, `createtime` datetime DEFAULT NULL, `verification` char(1) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT '0' COMMENT '0表明未驗證,1表明已驗證。', PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;
package com.demo.pojo; import java.util.Date; /** * @author 依風 * */ public class User { //id主鍵自增,故無set方法,且不傳入構造器。 private Integer id; //用戶名及密碼 private String userName; private String password; //建立時間 private Date createTime; //是否驗證,未驗證爲"0",驗證爲"1" private String verification; public User() { super(); // TODO Auto-generated constructor stub } public User(String userName, String password, Date createTime, String verification) { super(); this.userName = userName; this.password = password; this.createTime = createTime; this.verification = verification; } public Integer getId() { return 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; } public Date getCreateTime() { return createTime; } public void setCreateTime(Date createTime) { this.createTime = createTime; } public String getVerification() { return verification; } public void setVerification(String verification) { this.verification = verification; } }
接下來咱們在demo-dao中編輯接口與文件和對應的xml文件。
結構以下圖所示:
TbUserMapper.java
package com.demo.mapper; import com.demo.pojo.User; /** * @author 依風 * tb_user表的dao操做 */ public interface TbUserMapper { /** 向tb_user表中插入一條記錄 * @param user 插入記錄 * @return 受影響的行數 */ int insertUser(User user); }
TbUserMapper.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"> <!-- 注意此處是包名+接口名,xml文件名和接口文件名要一致 --> <mapper namespace = "com.demo.mapper.TbUserMapper" > <!-- 根據ID查詢客戶信息 --> <!-- id要和接口文件中的方法名一致 --> <insert id = "insertUser" parameterType = "com.demo.pojo.User" > INSERT INTO tb_user(name,password,createtime,verification) VALUES (#{userName}, #{password}, #{createTime},#{verification}) <!-- 注意參數名要和類中參數名保持一致,不然可能沒法獲取參數--> </insert> </mapper>
db.properties存放數據庫的驅動信息,鏈接地址,用戶名密碼等。
jdbc.driver=com.mysql.cj.jdbc.Driver jdbc.url=jdbc\:mysql\://localhost\:3306/demo?characterEncoding=utf-8 jdbc.username=xxxx jdbc.password=xxxx
此處注意jdbc.driver=com.mysql.cj.jdbc.Driver,不一樣版本的寫法不一致,較老版本沒有cj。
用戶名和密碼填寫本身的密碼就能夠了。
paalicationContext-dao.xml配置srping與數據庫的相關信息。
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd"> <!-- 數據庫鏈接池 --> <!-- 加載配置文件 --> <context:property-placeholder location="classpath*:properties/*.properties" /> <!-- 數據庫鏈接池 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close"> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="driverClassName" value="${jdbc.driver}" /> <property name="maxActive" value="10" /> <property name="minIdle" value="5" /> </bean> <!-- 讓spring管理sqlsessionfactory 使用mybatis和spring整合包中的 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 數據庫鏈接池 --> <property name="dataSource" ref="dataSource" /> <!-- 加載mybatis的全局配置文件 --> <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" /> </bean> <!-- 基於MapperScannerConfigurer,會自動掃描指定包下的接口文件和映射文件 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.demo.mapper" /> </bean> </beans>
SqlMapConfig.xml配置了一個分頁工具。
<?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> <plugins> <!-- com.github.pagehelper 爲 PageHelper 類所在包名 --> <plugin interceptor="com.github.pagehelper.PageHelper"> <!-- 設置數據庫類型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL 六種數據庫--> <property name="dialect" value="mysql"/> </plugin> </plugins> </configuration>
接下來咱們測試下dao有沒有問題
在demo-dao中的src/test/java下建立一個com.demo.dao.test.並建立一個類DaoTest.java
DaoTest.java
package com.demo.dao.test; import java.util.Date; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.demo.mapper.TbUserMapper; import com.demo.pojo.User; @RunWith(SpringJUnit4ClassRunner.class) //加載classpath路徑下(即src/main/resource目錄下) //srping文件夾中全部已application開頭的文件,*表明任意字符。 @ContextConfiguration(locations="classpath:spring/application*.xml") public class DaoTest { @Autowired private TbUserMapper tbUserMapper; @Test public void insertUserTest() { tbUserMapper.insertUser(new User("hcf","123",new Date(),"0")); } }
@ContextConfiguration(locations="classpath:spring/application*.xml")加載指定的xml文件,xml文件中主要有
配置數據源,將接口文件和映射文件匹配起來。因爲該模塊打包方法爲jar,因此測試是須要加載xml文件。
若是是war,則在tomcat中啓動,並在web.xml中配置加載指定文件便可(tomcat會自動加載web.xml)。
而後將鼠標點擊insertUserTest方法名,鼠標右鍵選擇Run as->JUnit Test便可。
不出意外應該運行成功的,若是不成功根據錯誤信息找下bug。
運行成功後數據庫中就會出現一條記錄。
Dao沒有問題後,咱們來構建Service.
首先編輯demo-service中的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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.demo</groupId> <artifactId>demo-parent</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>demo-service</artifactId> <dependencies> <!-- Spring依賴 --> <!-- 1.Spring核心依賴 --> <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> <!-- 2.Spring dao依賴 --> <!-- spring-jdbc包括了一些如jdbcTemplate的工具類 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </dependency> <!-- 3.Spring web依賴 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> </dependency> <!-- 4.Spring test依賴:方便作單元測試和集成測試 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> </dependency> <!-- junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency> <!-- dao --> <dependency> <groupId>com.demo</groupId> <artifactId>demo-dao</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> </project>
上面主要就是Spring相關依賴,注意一點Service須要引用Dao,因此須要依賴Dao。
UserService.java
package com.demo.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.demo.mapper.TbUserMapper; import com.demo.pojo.User; @Service public class UserService { @Autowired private TbUserMapper tbUserMapper; //插入一條數據 public void insert(User user) { tbUserMapper.insertUser(user); } }
接下來咱們須要在src/main/resources目錄下建立一個spring文件夾。
在裏面須要有兩個文件。
一個是applicationContext-dao.xml,一個是applicationContext.xml
applicationContext-dao.xml與demo-dao中的applicationContext-dao.xml相同,直接複製便可。
咱們來看下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:dubbo="http://code.alibabatech.com/schema/dubbo" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="com.demo.*"></context:component-scan> </beans>
能夠看你們裏面只有一個包掃描配置,掃描全部以com.demo開頭的包,*表明任意。
配置這個主要是位置掃描指定包中的註解,例如掃描UserServcie.java中的@Autowired,@Service註解。
在src/test/java中建立一個com.demo.service.test包,而後建立UserServiceTest.java類。
package com.demo.service.test; import java.util.Date; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.demo.pojo.User; import com.demo.service.UserService; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations="classpath:spring/application*.xml") public class UserServiceTest { @Autowired private UserService userService; @Test public void insertUser() { userService.insert(new User("hcf","321",new Date(),"0")); } }
注意看locations="classpath:spring/application*.xml",Service調用Dao,因此Dao也須要加載,加載完的Dao
被Service中的@Autowired注入到Servcie中,Service再調用Dao。Dao並不會本身自動加載,須要外部指定加載。
而後將鼠標放在方法名上,右擊Run as->JUnit Test.
而後運行成功,數據庫中又會多一條記錄。
Dao和Servcie完成後就剩下最後的Conttroller了。Controller須要引用Servcie,而Servcie會引用Dao,Controller也會間接引用Dao。
首先來看demo-web中的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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.demo</groupId> <artifactId>demo-parent</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>controller</artifactId> <packaging>war</packaging> <dependencies> <!-- Spring依賴 --> <!-- 1.Spring核心依賴 --> <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> <!-- 2.Spring dao依賴 --> <!-- spring-jdbc包括了一些如jdbcTemplate的工具類 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> </dependency> <!-- 3.Spring web依賴 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> </dependency> <!-- 4.Spring test依賴:方便作單元測試和集成測試 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.28</version> </dependency> <dependency> <groupId>javassist</groupId> <artifactId>javassist</artifactId> <version>3.11.0.GA</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.10</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.demo</groupId> <artifactId>demo-service</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <version>2.2</version> <configuration> <!-- 指定端口 --> <port>8080</port> <!-- 請求路徑 --> <path>/</path> </configuration> </plugin> </plugins> </build> </project>
pom.xml中最後配置一個tomcat插件,後續運行這個插件便可,就至關於將web程序運行在tomcat中了。
UserController
package com.demo.controller; import java.util.Date; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import com.demo.pojo.User; import com.demo.service.UserService; /** 用戶註冊,登陸控制類 * @author 依風 * */ //Controller+ReponseBody = RestController @RestController public class UserController { @Autowired private UserService userServcie; @RequestMapping("/insertUser") public String insertUser() { userServcie.insert(new User("controller","321",new Date(),"0")); return "insert success"; } }
而後咱們在src/main/resources下建立兩個文件夾,srping和config
config下的application.properties是一個空文件夾,有就能夠暫時不須要,只是先將基本的架子搭好。
spring文件夾下的applicationContext-dao.xml和applicationContext.xml和demo-servcie中的同樣,直接複製便可。
咱們看下applicationContext-mvc.xml中的內容。
<?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:dubbo="http://code.alibabatech.com/schema/dubbo" 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/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"> <!-- 掃描包下註解 --> <context:component-scan base-package="com.demo.*"></context:component-scan> <!-- 加載配置文件--> <context:property-placeholder location="classpath:config/application.properties" /> <!--fastjson--> <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter"> <property name="supportedMediaTypes" value="application/json"/> <property name="features"> <array> <value>WriteMapNullValue</value> <value>WriteDateUseDateFormat</value> </array> </property> </bean> </mvc:message-converters> </mvc:annotation-driven> </beans>
這裏面主要配置了fastjson,它將controller類返回的數據轉換爲json字符串。
咱們來看下demo-web中WEB-INF目錄下的web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <welcome-file-list> <welcome-file></welcome-file> </welcome-file-list> <!-- 過濾器統一編碼 --> <filter> <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 配置springmvc --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 加載src/main/resources下srping文件夾中全部application開頭的xml文件 --> <param-value>classpath:spring/application*.xml</param-value> </init-param> </servlet> <!-- 攔截全部.do結尾的請求 --> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
當tomcat啓動時會加載web.xml,而在web.xml中配置了Spring MVC攔截請求進行處理交由前端控制器(DispatcherServlet)處理,同時會加載指定的配置文件。
鼠標右擊demo-web,Run as -> Maven build。
而後彈出以下頁面,並在Goals欄輸入tomcat7:run
這樣就調用了demo-web下pom.xml中配置的tomca插件,此時demo-web就運行在tomcat中了。
而後咱們來測試下,在地址欄輸入http://localhost:8080/insertUser.do