标签:tle mave res ppi 3.1 指定 点击 namespace alias
SSM 框架即 Spring 框架、SpringMVC 框架、MyBatis 框架,关于这几个框架的基础和入门程序,我前面已经写过几篇文章作为基础和入门介绍了。这里再简单的介绍一下:
1.Spring
Spring 框架是 Java 应用最广的框架,它的成功来源于理念,而不是技术本身,它的理念包括 IoC (控制反转) 和 A面向切面编程)。Spring框架是个轻量级的Java EE框架,所谓轻量级,是指不依赖于容器就能运行的。简单来说,Spring是一个轻量级的控制反转(IoC)和面向切面(AOP)的容器框架。
2.Spring MVC
作用于web层,相当于controller,与struts中的action一样,都是用来处理用户请求的。同时,相比于struts2来说,更加细粒度,它是基于方法层面的,而struts是基于类层面的。Spring MVC 分离了控制器、模型对象、分派器以及处理程序对象的角色,这种分离让它们更容易进行定制。
3.MyBatis
MyBatis 本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation 迁移到了google code,并且改名为MyBatis 。MyBatis 是一款优秀的持久层框架,它支持定制化 SQL、存储过程以及高级映射。MyBatis 避免了几乎所有的 JDBC 代码和手动设置参数以及获取结果集。MyBatis 可以使用简单的 XML 或注解来配置和映射原生信息,将接口和 Java 的 POJOs(Plain Old Java Objects,普通的 Java对象)映射成数据库中的记录。
如果已经陆续学习过 SSM 框架相关知识的,可以忽略掉这一部分,直接看下面的内容。
鉴于 jar 包依赖于管理的方便,我们使用 Maven 进行项目的管理和开发,所以这一步我们使用 IDEA 快速创建一个 Maven 项目,关于如何使用 IDEA 快速创建 Maven 项目,这里就不进行过多赘述了,大家可以参考下面这篇文章:
Maven 项目创建完成后,快速打开并配置 pom.xml
文件,具体配置如下:
<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.ssm.example</groupId> <artifactId>SsmDemo</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>SSMDemo Maven Webapp</name> <url>http://maven.apache.org</url> <dependencies> <!-- 配置 SpringMVC 依赖包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.3.7.RELEASE</version> </dependency> <!-- Spring JDBC 依赖包--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>4.3.7.RELEASE</version> </dependency> <!-- Spring AOP 依赖包--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.3.7.RELEASE</version> </dependency> <!--MyBatis 依赖包--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.2</version> </dependency> <!-- Spring 整合 MyBatis 依赖包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!-- MySQL 驱动依赖包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.41</version> </dependency> <!-- C3P0 数据源依赖包 --> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1</version> </dependency> <!-- jstl 依赖包 --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- ServletAPI 依赖包--> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <!-- junit 测试依赖包 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> </dependency> </dependencies> <!-- 如果不添加此节点,mybatis 的 mapper.xml 文件都会被漏掉 --> <build> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> </resources> </build> </project>
打开 web.xml
文件,快速配置开启 Spring 、SpringMVC 编码过滤以及静态资源加载,具体配置代码如下:
<web-app> <display-name>Archetype Created Web Application</display-name> <!-- 启动Spring的容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- SpringMVC的前端控制器,拦截所有请求 --> <servlet> <servlet-name>mvc-dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>mvc-dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 字符编码过滤器,一定要放在所有过滤器之前 --> <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>forceRequestEncoding</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>forceResponseEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 加载静态资源 --> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.css</url-pattern> </servlet-mapping> </web-app>
在 resources
文件夹下新建 applicationContext.xml
文件,配置 MyBatis 和数据库相关信息,具体代码配置如下:
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <!-- 加载资源文件 --> <context:property-placeholder location="classpath:db.properties"/> <!-- 配置 C3P0 数据源 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="user" value="${jdbc.user}"></property> <property name="password" value="${jdbc.password}"></property> <property name="driverClass" value="${jdbc.driverClass}"></property> <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property> <property name="initialPoolSize" value="5"></property> <property name="maxPoolSize" value="10"></property> </bean> <!-- 配置 MyBatis SqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 指定 MyBatis 数据源 --> <property name="dataSource" ref="dataSource"/> <!-- 指定 MyBatis mapper 映射文件位置 --> <property name="mapperLocations" value="classpath:com/ssm/example/dao/*.xml"/> <!-- 指定 MyBatis 全局配置文件的位置 --> <property name="configLocation" value="classpath:mybatis-config.xml"></property> </bean> <!-- 扫描 MyBatis 的 mapper 接口 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--扫描所有 dao 接口,加入到 IOC 容器中 --> <property name="basePackage" value="com.ssm.example.dao"/> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 指定数据源 --> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置事务增强 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 配置所有方法都是事务方法 --> <tx:method name="*"/> <tx:method name="get*" read-only="true"/> </tx:attributes> </tx:advice> <!-- 开启基于注解的事务 --> <aop:config> <!-- 切入点表达式 --> <aop:pointcut expression="execution(* com.ssm.example.service.impl.*.*(..))" id="txPoint"/> <!-- 配置事务增强 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/> </aop:config> </beans>
在 resources
文件夹下新建 db.properties
文件,配置数据库连接相关信息,具体代码配置如下:
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_example?useUnicode=true&characterEncoding=UTF-8 jdbc.driverClass=com.mysql.jdbc.Driver jdbc.user=root jdbc.password=root
在 resources
文件夹下新建 mybatis-config.xml
文件,配置相关的数据库操作辅助信息,具体代码配置如下:
<?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> <settings> <!-- 打印SQL--> <setting name="logImpl" value="STDOUT_LOGGING" /> </settings> <typeAliases> <!-- 指定一个包名,MyBatis会在包名下搜索需要的JavaBean--> <package name="com.ssm.example.entity"/> </typeAliases> </configuration>
在 resources
文件夹下新建 springmvc.xml
文件,配置相关的数据库操作辅助信息,具体代码配置如下:
<?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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd"> <!-- 启用 SpringMVC 注解驱动 --> <mvc:annotation-driven /> <!-- 扫描业务代码 --> <context:component-scan base-package="com.ssm.example"></context:component-scan> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
新建 MySQL 数据库,快速新建数据表 ssm_example
,具体建表代码如下:
DROP TABLE IF EXISTS `student`; CREATE TABLE `student` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `gender` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `email` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `tel` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `cla` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, PRIMARY KEY (`id`) USING BTREE ) ENGINE = InnoDB AUTO_INCREMENT = 6 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact; INSERT INTO `student` VALUES (1, ‘孔乙己‘, ‘男‘, ‘kongyiji@163.com‘, ‘13509856897‘, ‘计算机1班‘); INSERT INTO `student` VALUES (2, ‘阿强‘, ‘女‘, ‘aqiang@126.com‘, ‘12345678909‘, ‘软件工程‘); INSERT INTO `student` VALUES (3, ‘阿福‘, ‘男‘, ‘afu@12345.com‘, ‘13657898762‘, ‘数学专业‘); INSERT INTO `student` VALUES (4, ‘阿霞‘, ‘女‘, ‘12345@qq.com‘, ‘12378645987‘, ‘英语专业‘); INSERT INTO `student` VALUES (5, ‘指南者‘, ‘男‘, ‘compassblog@gmail.com‘, ‘13587690873‘, ‘打杂搬砖专业‘); SET FOREIGN_KEY_CHECKS = 1;
快速新建实体类 Student.java
,具体代码如下:
package com.ssm.example.entity; public class Student { private int id; private String name; private String gender; private String email; private String tel; private String cla; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public String getTel() { return tel; } public void setTel(String tel) { this.tel = tel; } public String getCla() { return cla; } public void setCla(String cla) { this.cla = cla; } }
快速新建 StuentController.java
控制类,具体代码如下:
package com.ssm.example.controller; import java.util.List; import com.ssm.example.entity.Student; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.ssm.example.service.StudentService; @Controller public class StudentController { @Autowired private StudentService studentService; /** * 查找所有学生 * @return */ @RequestMapping(value="/findAll") public ModelAndView test(){ List<Student> list = studentService.findAll(); ModelAndView modelAndView = new ModelAndView(); modelAndView.setViewName("index"); modelAndView.addObject("list", list); return modelAndView; } }
快速新建 StudentService.java
接口,代码如下:
package com.ssm.example.service; import java.util.List; import com.ssm.example.entity.Student; public interface StudentService { public List<Student> findAll(); }
快速新建 StudentServiceImpl.java
类实现接口,具体代码如下:
package com.ssm.example.service.impl; import java.util.List; import com.ssm.example.dao.StudentDAO; import com.ssm.example.entity.Student; import com.ssm.example.service.StudentService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class StudentServiceImpl implements StudentService { @Autowired private StudentDAO studentDAO; public List<Student> findAll() { // TODO Auto-generated method stub return studentDAO.findAll(); } }
快速新建 dao 接口 StudentDAO.java
,具体代码如下:
package com.ssm.example.dao; import java.util.List; import com.ssm.example.entity.Student; public interface StudentDAO { public List<Student> findAll(); }
快速新建 dao 接口代理文件 StudentDAO.xml
,具体代码如下:
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.ssm.example.dao.StudentDAO"> <resultMap type="Student" id="studentMap"> <id property="id" column="id"/> <result property="name" column="name"/> <result property="gender" column="gender"/> <result property="email" column="email"/> <result property="tel" column="tel"/> <result property="cla" column="cla"/> </resultMap> <select id="findAll" resultMap="studentMap"> select * from student </select> </mapper>
快速新建访问页面 index.jsp
,并且页面使用 bootstrap 框架作轻度渲染,具体代码如下:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ page isELIgnored="false" %> <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>学生列表</title> <link rel="stylesheet" href="${pageContext.request.contextPath}/static/bootstrap-3.3.7-dist/css/bootstrap.min.css"> </head> <body> <br><br><br> <div class="container" align="center"> <div class="row"> <div class="col-md-12"> <h1>SSM 框架快速整合实例--学生查询</h1> </div> </div> <br> <div class="row"> <div class="col-md-12"> <table class="table table-hover" id="emps_table"> <thead> <tr> <th> <input type="checkbox" id="check_all"/> </th> <th>编号</th> <th>姓名</th> <th>性别</th> <th>电子邮箱</th> <th>联系电话</th> <th>班级</th> <th>操作</th> </tr> </thead> <tbody> <c:forEach items="${list }" var="student"> <tr> <td><input type=‘checkbox‘ class=‘check_item‘/></td> <td>${student.id }</td> <td>${student.name }</td> <td>${student.gender }</td> <td>${student.email }</td> <td>${student.tel }</td> <td>${student.cla }</td> <td> <button class="btn btn-primary btn-sm edit_btn"> <span class="glyphicon glyphicon-pencil">编辑</span> </button> <button class="btn btn-danger btn-sm delete_btn"> <span class="glyphicon glyphicon-trash">删除</span> </button> </td> </tr> </c:forEach> </tbody> </table> </div> </div> </div> </body> </html>
到这里,SSM 框架整合程序就已经书写完毕,部署并启动 Tomcat 服务器,然后到浏览器地址栏测试,结果如下:
标签:tle mave res ppi 3.1 指定 点击 namespace alias
原文地址:https://www.cnblogs.com/aishangJava/p/10008763.html