SSM框架的整合
1.1 maven整合ssm框架简介
1.1.1 ssm框架整合概述
- 利用maven整合ssm框架的思路
1.在对每个框架整合之前都需要先在maven的pom.xml配置文件中导入相关的依赖
2.导入完依赖接着再在pom.xml配置文件中导入相关插件
3.整合各个框架对应的配置文件,把与创建对象相关交给spring即整合到spring.xml中
4.重新整个各个框架的核心配置文件
- 注意点:
1.每整合完一个框架都要做相应的测试,防止一次性整合完,出现错误难以排查
2.本文以创建一个web项目为例
3.本文用的是eclipse的neon版本工具进行整合
4.配置文件放在src/main/resources目录下
1.2 maven整合ssm框架整合详解
1.2.1 在eclipse中创建一个工程
- 创建工程详解
1.创建一个maven工程,选择骨架webapp,填写好坐标三要素
2.因为webapp骨架缺少src/main/java文件结构,所以需要添加该文件结构
3.如果创建的是普通java骨架,其会缺少src/main/resource文件结构
4.创建完了,项目目录结构如下:
5.在maven的pom.xml中添加所需的插件,如source生成插件,编译插件,tomcat插件
1 <project xmlns="http://maven.apache.org/pom/4.0.0" 2 xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" 3 xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 4 <modelversion>4.0.0</modelversion> 5 <groupid>cn.baidu</groupid> 6 <artifactid>uer-order-ssm</artifactid> 7 <packaging>war</packaging> 8 <version>0.0.1-snapshot</version> 9 <name>uer-order-ssm maven webapp</name> 10 <url>http://maven.apache.org</url> 11 <dependencies> 12 <dependency> 13 <groupid>junit</groupid> 14 <artifactid>junit</artifactid> 15 <version>3.8.1</version> 16 <scope>test</scope> 17 </dependency> 18 </dependencies> 19 <build> 20 <finalname>uer-order-ssm</finalname> 21 <!-- source插件 --> 22 <plugins> 23 <plugin> 24 <groupid>org.apache.maven.plugins</groupid> 25 <artifactid>maven-compiler-plugin</artifactid> 26 <configuration> 27 <source>1.8</source> 28 <target>1.8</target> 29 <encoding>utf-8</encoding> 30 </configuration> 31 </plugin> 32 <!-- tomcat插件整合springmvc的时候补充 --> 33 </plugins> 34 </build> 35 </project>
6.注意:
-
- maven插件资源,将当前maven工程进行compile编译时加载,完成java1.8,1.7的使用,这里统一使用1.8的版本
- 往下整合关于pom.xml文件的配置内容,本人只给出需要添加的部分,读者往上面代码中添加即可
1.2.2 将spring框架整合到maven中
- 整体思路
1.先在pom.xml文件中导入spring框架所依赖的资源
2.然后编写spring和核心配置文件,spring.xml,该配置文件进行包扫描,打开注解配置
3.往下的整合只要跟创建对象,对象管理相关的配置都在spring.xml文件中配置
4.编写测试代码,测试整合是否成功
- 先在pom.xml文件中导入spring框架的依赖资源
1.导入spring-context依赖资源,但是依赖具有传递性,导入该资源可能也会引入其他依赖资源
1 <dependency> 2 <groupid>org.springframework</groupid> 3 <artifactid>spring-context</artifactid> 4 <version>4.3.7.release</version> 5 </dependency>
- 编写spring的核心配置文件spring.xml
1.将spring.xml配置文件放到src/main/resources目录下
2.在src目录下的资源在编译的时候都会将字节码加载到target/classes中
3.在配置文件中会经常看见"classpath:xxx.xml"路径来读取文件,而classpath路径是什么位置?
4.在maven项目中classpath路径默认src/main/resource路径
5.往后跟创建对象相关的配置需要放在spring的核心配置文件中,用于创建bean对象
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:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:p="http://www.springframework.org/schema/p" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xmlns:context="http://www.springframework.org/schema/context" 9 xmlns:mvc="http://www.springframework.org/schema/mvc" 10 xsi:schemalocation=" 11 http://www.springframework.org/schema/beans 12 http://www.springframework.org/schema/beans/spring-beans.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx.xsd 17 http://www.springframework.org/schema/util 18 http://www.springframework.org/schema/util/spring-util.xsd 19 http://www.springframework.org/schema/context 20 http://www.springframework.org/schema/context/spring-context.xsd 21 http://www.springframework.org/schema/mvc 22 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 23 24 <!-- 开启包扫描 --> 25 <context:component-scan base-package="cn.baidu"></context:component-scan> 26 <!-- 开启注解di --> 27 <context:annotation-config></context:annotation-config> 28 29 </beans>
- 编写测试代码,测试maven整合spring框架是否成功
1.依据三层架构建好目录结构
2.编写控制层测试程序
1 package cn.baidu.controller; 2 3 import org.springframework.beans.factory.annotation.autowired; 4 import org.springframework.stereotype.controller; 5 6 import cn.baidu.service.helloservice; 7 8 @controller 9 public class hellocontroller { 10 11 // 注入service层对象 12 @autowired 13 private helloservice helloservice; 14 15 public string sayhi(string name){ 16 // 调用对应service层的方法 17 return helloservice.sayhi(name); 18 } 19 20 }
3.编写业务逻辑层的接口
1 package cn.baidu.service; 2 3 //service层的接口 4 public interface helloservice { 5 6 public string sayhi(string name); 7 8 }
4.编写业务层的实现类
1 package cn.baidu.service; 2 3 import org.springframework.beans.factory.annotation.autowired; 4 import org.springframework.stereotype.service; 5 6 import cn.baidu.mapper.hellomapper; 7 8 @service 9 public class helloserviceimp implements helloservice{ 10 11 // 注入持久层对象 12 @autowired 13 private hellomapper hellomapper; 14 @override 15 public string sayhi(string name) { 16 // 调用持久层方法 17 return hellomapper.sayhi(name); 18 } 19 20 }
5.编写持久层接口
1 package cn.baidu.mapper; 2 3 public interface hellomapper { 4 5 public string sayhi(string name); 6 7 }
6.编写持久层实现类
1 package cn.baidu.mapper; 2 3 import org.springframework.stereotype.repository; 4 5 @repository 6 public class hellomapperimp implements hellomapper{ 7 8 @override 9 public string sayhi(string name) { 10 return "hi,欢迎测试spring框架的搭建情况"; 11 } 12 13 }
7.变成测试类,测试整合情况
1 package cn.baidu.test; 2 3 import org.junit.test; 4 import org.springframework.context.applicationcontext; 5 import org.springframework.context.support.classpathxmlapplicationcontext; 6 7 import cn.baidu.controller.hellocontroller; 8 9 public class testhello { 10 11 @test 12 public void test(){ 13 14 // 初始化spring容器 15 applicationcontext context = new classpathxmlapplicationcontext("spring.xml"); 16 // 获取控制层对象 17 hellocontroller hellocontroller = context.getbean(hellocontroller.class); 18 // 调用控制层方法 19 string str = hellocontroller.sayhi("谭小杰"); 20 system.out.println(str); 21 22 } 23 24 }
7.出现如下结果说明测试成功
1.2.3 将mybatis框架整合至maven中
- 整合思路
1.mybatis框架主要有两个配置文件,一个是mybatis配置文件和xxxmapper.xml(核心)配置文件
2.映射配置文件中主要配置数据源,用于创建与数据库连接的对象和配置核心配置文件的映射
3.有以上两个文件的配置内容可知,数据源的配置移到spring.xml配置文件中
4.mybatis框架需要创建sqlsession对象执行sql语句,获取执行结果
5.所以在spring.xml文件中配置sqlsession的bean,用于创建session对象
6.mybatis需要mapper接口,需要在spring.xml配置对应的bean利用动态代理创建其接口的实现类
7.编写mybatis-config.xml配置文件,里面添加一些mybatis的功能
8.编写xxxmapper.xml配置文件,定义好namespace和定义所需的sql语句
- 在pom.xml配置文件中导入mybatis框架所需的依赖资源
1.配置数据源需要连接池依赖,jdbc依赖和数据库类型依赖
2.本文用的连接池是阿里巴巴的druid,数据库用的是mysql
1 <!-- 连接池依赖 --> 2 <dependency> 3 <groupid>com.alibaba</groupid> 4 <artifactid>druid</artifactid> 5 <version>1.0.14</version> 6 </dependency> 7 <!-- jdbc依赖 --> 8 <dependency> 9 <groupid>org.springframework</groupid> 10 <artifactid>spring-jdbc</artifactid> 11 <version>4.3.7.release</version> 12 </dependency> 13 <!-- mysql依赖 --> 14 <dependency> 15 <groupid>mysql</groupid> 16 <artifactid>mysql-connector-java</artifactid> 17 <version>5.0.8</version> 18 </dependency> 19 <!-- mybatis依赖资源 --> 20 <dependency> 21 <groupid>org.mybatis</groupid> 22 <artifactid>mybatis</artifactid> 23 <version>3.4.5</version> 24 </dependency> 25 <!-- mybatis-spring依赖资源 --> 26 <dependency> 27 <groupid>org.mybatis</groupid> 28 <artifactid>mybatis-spring</artifactid> 29 <version>1.3.1</version> 30 </dependency>
- 在spring.xml中配置对应的bean
1.配置数据源的bean标签,该标签主要数用于创建连接数据库对象
1 <!-- 配置数据源 --> 2 <bean id="datasource" class="com.alibaba.druid.pool.druiddatasource"> 3 <!-- 4个属性,数据库驱动,url,用户名和密码 --> 4 <property name="driverclassname" value="com.mysql.jdbc.driver"/> 5 <property name="url" value="jdbc:mysql:///mssm"/> 6 <property name="username" value="root"/> 7 <property name="password" value="root"/> 8 </bean>
2.配置sqlsession的bean标签,该标签用于创建session对象,用于执行sql语句和获取执行结果
1 <!-- 配置sqlsession,动态代理实现持久层sqlsession接口实现的对象 --> 2 <bean id="sqlsession" class="org.mybatis.spring.sqlsessionfactorybean"> 3 <!-- 绑定数据源即获取connection对象 --> 4 <property name="datasource" ref="datasource"/> 5 <!-- 加载mybatis的独立配置文件 --> 6 <property name="configlocation" value="classpath:mybatis-config.xml"/> 7 <!-- 扫描映射xxxmapper.xml映射文件 --> 8 <property name="mapperlocations"value="classpath:mapper/*.xml"/> 9 </bean> 10 <!-- 配置mapper接口的扫描配置用于创建mapper接口的实现类 --> 11 <bean class="org.mybatis.spring.mapper.mapperscannerconfigurer"> 12 <property name="basepackage" value="cn.baidu.mapper"/> 13 </bean>
- 编写mybatis-config.xml配置文件
1.在src/main/resources目录下编写mybatis-config.xml配置文件
1 <?xml version="1.0" encoding="utf-8" ?> 2 <!doctype configuration 3 public "-//mybatis.org//dtd config 3.0//en" 4 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 5 <configuration> 6 <!-- 打开驼峰命名设置,用于封装持久层数据对象的内容--> 7 <settings> 8 <setting name="mapunderscoretocamelcase" value="true"/> 9 </settings> 10 11 </configuration>
- 编写xxxmapper.xml配置文件
1.在src/main/resources/mapper目录下配置对应的xxxmapper.xml文件,将sql语句添加其中
1 <?xml version="1.0" encoding="utf-8"?> 2 <!doctype mapper public "-//mybatis.org//dtd mapper 3.0//en" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 <mapper namespace="cn.baidu.mapper.studentmapper"> 5 </mapper>
- 编写测试代码,测试mybatis整合是否成功
1.在连接的数据库中建立mssm数据库,创建student表格,其有如下字段和数据
1 //创建表 2 create table student(id varchar(225),name varchar(225)); 3 //添加数据 4 insert into student values('a','王重阳'),('b','欧阳锋'),('c','黄药师');
2.编写一个用于封装数据的domain类
1 package cn.baidu.domain; 2 3 public class student { 4 5 // 定义属性 6 private string id; 7 private string name; 8 // 定义构造方法 9 public student(){} 10 public student(string id, string name) { 11 super(); 12 this.id = id; 13 this.name = name; 14 } 15 // 定义getter和sett方法 16 public string getid() { 17 return id; 18 } 19 public void setid(string id) { 20 this.id = id; 21 } 22 public string getname() { 23 return name; 24 } 25 public void setname(string name) { 26 this.name = name; 27 } 28 @override 29 public string tostring() { 30 return "student [id=" + id + ", name=" + name + "]"; 31 } 32 33 }
3.编写控制层代码
1 package cn.baidu.controller; 2 3 import org.springframework.beans.factory.annotation.autowired; 4 import org.springframework.stereotype.controller; 5 6 import cn.baidu.domain.student; 7 import cn.baidu.service.studentservice; 8 9 @controller 10 public class studentcontroller { 11 12 @autowired 13 private studentservice studentservice; 14 public student querystudentbyid(string id){ 15 return studentservice.querystudentbyid(id); 16 } 17 18 }
4.编写业务层接口
1 package cn.baidu.service; 2 3 import cn.baidu.domain.student; 4 5 public interface studentmapper { 6 7 public student queryone(string id); 8 }
5.编写业务层的实现类
1 package cn.baidu.service; 2 3 import org.springframework.beans.factory.annotation.autowired; 4 import org.springframework.stereotype.service; 5 6 import cn.baidu.domain.student; 7 8 @service 9 public class studentserviceimp implements studentservice{ 10 11 @autowired 12 private studentmapper studentmapper; 13 14 @override 15 public student querystudentbyid(string id) { 16 return studentmapper.queryone(id); 17 } 18 19 }
6.编写studentmapper.xml文件,把写入查询sql语句
1 <?xml version="1.0" encoding="utf-8"?> 2 <!doctype mapper public "-//mybatis.org//dtd mapper 3.0//en" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 <mapper namespace="cn.baidu.mapper.studentmapper"> 5 <select id="queryone" resulttype="cn.baidu.domain.student"> 6 select * from student where id=#{id}; 7 </select> 8 </mapper>
7.编写对应的mapper配置文件对应的接口
1 package cn.baidu.mapper; 2 3 import cn.baidu.domain.student; 4 5 public interface studentmapper { 6 7 public student queryone(string id); 8 }
8.编写测试类,测试是否整合成功
1 package cn.baidu.test; 2 3 import org.junit.test; 4 import org.springframework.context.applicationcontext; 5 import org.springframework.context.support.classpathxmlapplicationcontext; 6 7 import cn.baidu.controller.studentcontroller; 8 import cn.baidu.domain.student; 9 10 public class studenttest { 11 12 @test 13 public void test(){ 14 15 // 初始化spring容器 16 applicationcontext context = new classpathxmlapplicationcontext("spring.xml"); 17 // 获取控制层对象 18 studentcontroller studentcontroller = context.getbean(studentcontroller.class); 19 // 调用控制层方法 20 student student = studentcontroller.querystudentbyid("c"); 21 system.out.println(student); 22 23 } 24 25 26 }
9.出现如下结果,说明mybatis整合成功
1.2.4 将springmvc框架整合到maven中
- 整体思路
1.在pom.xml文件中导入springmvc框架所需要的依赖资源和插件
2.在web.xml文件中创建前端控制器即dispatcherservlet
3.编写springmvc的核心配置文件spring-mvc.xml,用于配置视图解析器和打开mvc注解
4.如有一些静态资源的访问,也可在spring-mvc.xml文件中配置
- 在pom.xml配置文件中导入tomcat插件
1.对于web项目,所有的内容都是由tomcat容器启动的,所以需要引入tomcat插件
1 <!-- 引入tomcat插件 --> 2 <plugin> 3 <groupid>org.apache.tomcat.maven</groupid> 4 <artifactid>tomcat7-maven-plugin</artifactid> 5 <version>2.2</version> 6 <!-- tomcat的启动配置 --> 7 <configuration> 8 <!-- 端口号访问路径默认80端口 --> 9 <port>80</port> 10 <!-- 应用程序的访问路径 --> 11 <path>/</path> 12 <!-- 接收数据编解码的格式为utf-8 --> 13 <uriencoding>utf-8</uriencoding> 14 <usebodyencodingforuri>utf-8</usebodyencodingforuri> 15 </configuration> 16 </plugin>
注:如果不想引入tomcat插件,将项目打成war包扔至外部tomcat也可以,这里选择导入插件
- 导入springmvc所需要的依赖
1.springmvc需要导入spring-web和spring-webmvc依赖
2.有时为了将对象转化成json字符串,还需要jackson依赖
1 <!-- 引入spring-web依赖 --> 2 <dependency> 3 <groupid>org.springframework</groupid> 4 <artifactid>spring-web</artifactid> 5 <version>4.3.7.release</version> 6 </dependency> 7 <!-- 引入spring-webmvc依赖 --> 8 <dependency> 9 <groupid>org.springframework</groupid> 10 <artifactid>spring-webmvc</artifactid> 11 <version>4.3.7.release</version> 12 </dependency> 13 <!-- 引入jackson依赖 --> 14 <dependency> 15 <groupid>com.fasterxml.jackson.core</groupid> 16 <artifactid>jackson-core</artifactid> 17 <version>2.8.8</version> 18 </dependency> 19 <dependency> 20 <groupid>com.fasterxml.jackson.core</groupid> 21 <artifactid>jackson-databind</artifactid> 22 <version>2.8.8</version> 23 </dependency>
- 在tomcat启动加载的web.xml文件中,配置dispacherservlet
1.在dispacherservlet的配置中初始化spring*.xml文件,使得服务器加载spring的所有配置内容
2.让服务器加载所有配置内容的目的是使得各层的注解生效,web.xml配置如下
1 <!doctype web-app public 2 "-//sun microsystems, inc.//dtd web application 2.3//en" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 <web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" 5 xmlns="http://java.sun.com/xml/ns/javaee" 6 xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 7 xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> 8 <display-name>archetype created web application</display-name> 9 <!-- 创建dispachersevlet --> 10 <servlet> 11 <servlet-name>springmvc</servlet-name> 12 <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class> 13 <!-- 配置初始化参数,使得tomcat启动的时候,加载spring*.xml文件 --> 14 <init-param> 15 <param-name>contextconfiglocation</param-name> 16 <param-value>classpath:spring*.xml</param-value> 17 </init-param> 18 </servlet> 19 <servlet-mapping> 20 <servlet-name>springmvc</servlet-name> 21 <url-pattern>/*</url-pattern> 22 </servlet-mapping> 23 <welcome-file-list>index.html</welcome-file-list> 24 </web-app>
- 在src/main/resources目录下编写spring-mvc.xml文件
1.文件中开启mvc注解生效配置和视图解析器的配置
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:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:p="http://www.springframework.org/schema/p" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xmlns:context="http://www.springframework.org/schema/context" 9 xmlns:mvc="http://www.springframework.org/schema/mvc" 10 xsi:schemalocation=" 11 http://www.springframework.org/schema/beans 12 http://www.springframework.org/schema/beans/spring-beans.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx.xsd 17 http://www.springframework.org/schema/util 18 http://www.springframework.org/schema/util/spring-util.xsd 19 http://www.springframework.org/schema/context 20 http://www.springframework.org/schema/context/spring-context.xsd 21 http://www.springframework.org/schema/mvc 22 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 23 <!-- 静态资源html js css访问 --> 24 <mvc:resources location="/" mapping="/**"/> 25 <!-- springmvc开启所有注解功能的标签 --> 26 27 <mvc:annotation-driven/> 28 29 <!-- 视图解析的前后缀 --> 30 <bean id="viewresovler" 31 class="org.springframework.web.servlet.view.internalresourceviewresolver"> 32 <!-- 前后缀拼接 --> 33 <property name="prefix" value="views/"/> 34 <property name="suffix" value=".html"></property> 35 </bean> 36 <!-- 以下配置可以解决springmvc返回数据的编解码问题 --> 37 <bean class="org.springframework.http.converter.stringhttpmessageconverter"> 38 <property name="supportmediatypes" value="text/html;charset=utf-8"></property> 39 </bean> 40 </beans>
- 编写测试代码,测试springmvc整合是否成功
1.测试代码实现的功能需求:通过浏览器,传递一个get的请求参数id=a/b/c
2.项目返回一个从数据库查询的student对象,页面的浏览器展示
3.在整合mybatis测试代码的基础上,编写该测试代码,把之前的test类删除
4.修改控制层的代码,如下,其他的与mybatis测试代码一致,不再展示
1 package cn.baidu.controller; 2 3 import org.springframework.beans.factory.annotation.autowired; 4 import org.springframework.stereotype.controller; 5 import org.springframework.web.bind.annotation.requestmapping; 6 import org.springframework.web.bind.annotation.responsebody; 7 8 import cn.baidu.domain.student; 9 import cn.baidu.service.studentservice; 10 11 12 @controller 13 public class studentcontroller { 14 15 @autowired 16 private studentservice studentservice; 17 18 // 以下两个注解,他们的作用分别是:将以下的方法变成处理器 19 // requestbody是实现将返回的对象变成json字符串,展示在浏览器端 20 @requestmapping("querystudent") 21 @responsebody 22 public student querystudentbyid(string id){ 23 return studentservice.querystudentbyid(id); 24 } 25 26 }
5.启动当前工程,运行tomcat插件,在maven build中创建一个运行命令:goals:tomcat7:run
6.运行debuge/run的maven build的命令,启动tomcat出现如下信息说明启动成功
7.在浏览器测试访问localhost/querystudent?id=a,出现如下的结果说明整合成功
8.完成了以上内容说明maven整合的ssm框架已将全部整合完毕
1.3 ssm框架整合总结
1.3.1 ssm框架整合整体配置文件和目录结构展示
- 目录结构如下:
1.磁盘中的目录结构如下
2.eclipse中的目录结构如下
- 整体配置文件
1.pom.xml整体配置文件
1 <project xmlns="http://maven.apache.org/pom/4.0.0" 2 xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" 3 xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 4 <modelversion>4.0.0</modelversion> 5 <groupid>cn.baidu</groupid> 6 <artifactid>uer-order-ssm</artifactid> 7 <packaging>war</packaging> 8 <version>0.0.1-snapshot</version> 9 <name>uer-order-ssm maven webapp</name> 10 <url>http://maven.apache.org</url> 11 <dependencies> 12 <dependency> 13 <groupid>junit</groupid> 14 <artifactid>junit</artifactid> 15 <version>3.8.1</version> 16 <scope>test</scope> 17 </dependency> 18 <dependency> 19 <groupid>org.springframework</groupid> 20 <artifactid>spring-context</artifactid> 21 <version>4.3.7.release</version> 22 </dependency> 23 <!-- 连接池依赖 --> 24 <dependency> 25 <groupid>com.alibaba</groupid> 26 <artifactid>druid</artifactid> 27 <version>1.0.14</version> 28 </dependency> 29 <!-- jdbc依赖 --> 30 <dependency> 31 <groupid>org.springframework</groupid> 32 <artifactid>spring-jdbc</artifactid> 33 <version>4.3.7.release</version> 34 </dependency> 35 <!-- mysql依赖 --> 36 <dependency> 37 <groupid>mysql</groupid> 38 <artifactid>mysql-connector-java</artifactid> 39 <version>5.0.8</version> 40 </dependency> 41 <!-- mybatis依赖资源 --> 42 <dependency> 43 <groupid>org.mybatis</groupid> 44 <artifactid>mybatis</artifactid> 45 <version>3.4.5</version> 46 </dependency> 47 <!-- mybatis-spring依赖资源 --> 48 <dependency> 49 <groupid>org.mybatis</groupid> 50 <artifactid>mybatis-spring</artifactid> 51 <version>1.3.1</version> 52 </dependency> 53 <!-- 引入spring-web依赖 --> 54 <dependency> 55 <groupid>org.springframework</groupid> 56 <artifactid>spring-web</artifactid> 57 <version>4.3.7.release</version> 58 </dependency> 59 <!-- 引入spring-webmvc依赖 --> 60 <dependency> 61 <groupid>org.springframework</groupid> 62 <artifactid>spring-webmvc</artifactid> 63 <version>4.3.7.release</version> 64 </dependency> 65 <!-- 引入jackson依赖 --> 66 <dependency> 67 <groupid>com.fasterxml.jackson.core</groupid> 68 <artifactid>jackson-core</artifactid> 69 <version>2.8.8</version> 70 </dependency> 71 <dependency> 72 <groupid>com.fasterxml.jackson.core</groupid> 73 <artifactid>jackson-databind</artifactid> 74 <version>2.8.8</version> 75 </dependency> 76 </dependencies> 77 <build> 78 <finalname>uer-order-ssm</finalname> 79 <!-- source插件 --> 80 <plugins> 81 <plugin> 82 <groupid>org.apache.maven.plugins</groupid> 83 <artifactid>maven-compiler-plugin</artifactid> 84 <configuration> 85 <source>1.8</source> 86 <target>1.8</target> 87 <encoding>utf-8</encoding> 88 </configuration> 89 </plugin> 90 <!-- 引入tomcat插件 --> 91 <plugin> 92 <groupid>org.apache.tomcat.maven</groupid> 93 <artifactid>tomcat7-maven-plugin</artifactid> 94 <version>2.2</version> 95 <!-- tomcat的启动配置 --> 96 <configuration> 97 <!-- 端口号访问路径默认80端口 --> 98 <port>80</port> 99 <!-- 应用程序的访问路径 --> 100 <path>/</path> 101 <!-- 接收数据编解码的格式为utf-8 --> 102 <uriencoding>utf-8</uriencoding> 103 <usebodyencodingforuri>utf-8</usebodyencodingforuri> 104 </configuration> 105 </plugin> 106 </plugins> 107 </build> 108 </project>
2.web.xml整体配置文件
1 <!doctype web-app public 2 "-//sun microsystems, inc.//dtd web application 2.3//en" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 <web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" 5 xmlns="http://java.sun.com/xml/ns/javaee" 6 xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 7 xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> 8 <display-name>archetype created web application</display-name> 9 <!-- 创建dispachersevlet --> 10 <servlet> 11 <servlet-name>springmvc</servlet-name> 12 <servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class> 13 <!-- 配置初始化参数,使得tomcat启动的时候,加载spring*.xml文件 --> 14 <init-param> 15 <param-name>contextconfiglocation</param-name> 16 <param-value>classpath:spring*.xml</param-value> 17 </init-param> 18 </servlet> 19 <servlet-mapping> 20 <servlet-name>springmvc</servlet-name> 21 <url-pattern>/*</url-pattern> 22 </servlet-mapping> 23 <welcome-file-list>index.html</welcome-file-list> 24 </web-app>
3.spring.xml整体配置文件
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:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:p="http://www.springframework.org/schema/p" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xmlns:context="http://www.springframework.org/schema/context" 9 xmlns:mvc="http://www.springframework.org/schema/mvc" 10 xsi:schemalocation=" 11 http://www.springframework.org/schema/beans 12 http://www.springframework.org/schema/beans/spring-beans.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx.xsd 17 http://www.springframework.org/schema/util 18 http://www.springframework.org/schema/util/spring-util.xsd 19 http://www.springframework.org/schema/context 20 http://www.springframework.org/schema/context/spring-context.xsd 21 http://www.springframework.org/schema/mvc 22 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 23 24 <!-- 开启包扫描 --> 25 <context:component-scan base-package="cn.baidu"></context:component-scan> 26 <!-- 开启注解di --> 27 <context:annotation-config></context:annotation-config> 28 <!-- 配置数据源 --> 29 <bean id="datasource" class="com.alibaba.druid.pool.druiddatasource"> 30 <!-- 4个属性,数据库驱动,url,用户名和密码 --> 31 <property name="driverclassname" value="com.mysql.jdbc.driver"/> 32 <property name="url" value="jdbc:mysql:///mssm"/> 33 <property name="username" value="root"/> 34 <property name="password" value="041x"/> 35 </bean> 36 <!-- 配置sqlsession,动态代理实现持久层sqlsession接口实现的对象 --> 37 <bean id="sqlsession" class="org.mybatis.spring.sqlsessionfactorybean"> 38 <!-- 绑定数据源即获取connection对象 --> 39 <property name="datasource" ref="datasource"/> 40 <!-- 加载mybatis的独立配置文件 --> 41 <property name="configlocation" value="classpath:mybatis-config.xml"/> 42 <!-- 扫描映射xxxmapper.xml映射文件 --> 43 <property name="mapperlocations" value="classpath:mapper/*.xml"/> 44 </bean> 45 <!-- 配置mapper接口的扫描配置用于创建mapper接口的实现类 --> 46 <bean class="org.mybatis.spring.mapper.mapperscannerconfigurer"> 47 <property name="basepackage" value="cn.baidu.mapper"/> 48 </bean> 49 50 </beans>
4.mybatis-config.xml整体配置文件
1 <?xml version="1.0" encoding="utf-8" ?> 2 <!doctype configuration 3 public "-//mybatis.org//dtd config 3.0//en" 4 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 5 <configuration> 6 <!-- 打开驼峰命名设置,用于封装持久层数据对象的内容--> 7 <settings> 8 <setting name="mapunderscoretocamelcase" value="true"/> 9 </settings> 10 11 </configuration>
5.spring-mvc.xml整体配置文件
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:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:p="http://www.springframework.org/schema/p" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xmlns:context="http://www.springframework.org/schema/context" 9 xmlns:mvc="http://www.springframework.org/schema/mvc" 10 xsi:schemalocation=" 11 http://www.springframework.org/schema/beans 12 http://www.springframework.org/schema/beans/spring-beans.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx.xsd 17 http://www.springframework.org/schema/util 18 http://www.springframework.org/schema/util/spring-util.xsd 19 http://www.springframework.org/schema/context 20 http://www.springframework.org/schema/context/spring-context.xsd 21 http://www.springframework.org/schema/mvc 22 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 23 <!-- 静态资源html js css访问 --> 24 <mvc:resources location="/" mapping="/**"/> 25 <!-- springmvc开启所有注解功能的标签 --> 26 27 <mvc:annotation-driven/> 28 29 <!-- 视图解析的前后缀 --> 30 <bean id="viewresovler" 31 class="org.springframework.web.servlet.view.internalresourceviewresolver"> 32 <!-- 前后缀拼接 --> 33 <property name="prefix" value="views/"/> 34 <property name="suffix" value=".html"></property> 35 </bean> 36 <!-- 以下配置可以解决springmvc返回数据的编解码问题 --> 37 <bean class="org.springframework.http.converter.stringhttpmessageconverter"> 38 <property name="supportmediatypes" value="text/html;charset=utf-8"></property> 39 </bean> 40 </beans>
6.xxxmapper.xml整体配置文件,此配置文件多变,以下只是范例
1 <?xml version="1.0" encoding="utf-8"?> 2 <!doctype mapper public "-//mybatis.org//dtd mapper 3.0//en" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 <mapper namespace="cn.baidu.mapper.studentmapper"> 5 <select id="queryone" resulttype="cn.baidu.domain.student"> 6 select * from student where id=#{id}; 7 </select> 8 </mapper>
1.3.2 ssm整合易错点
- 错误调试思路
1.在做整合的时候不免出现各种各样的错误,大多都是不细心造成的
2.所以在遇见错误的时候,保持耐心,慢慢捋一捋思路
3.以下是本人调试错误的一些思路,仅供参考
-
- ssm框架整合出现异常,一般都是由前一个异常引起后面异常的抛出,所以查看异常的时候,查看报错的第一句(第一句内容比较长)
- 例如报如下错误:出现异常按照以下红色字体标识往下找,通常找到最后一行即可找到出错导致的原因,或者某些关键字,按照其提示的关键字,自己到对应的地方仔细检查,排查错误
-
org.springframework.beans.factory.unsatisfieddependencyexception: error creating bean with name 'studentcontroller': unsatisfied dependency expressed through field 'studentservice'; nested exception is org.springframework.beans.factory.unsatisfieddependencyexception: error creating bean with name 'studentserviceimp': unsatisfied dependency expressed through field 'studentmapper'; nested exception is org.springframework.beans.factory.unsatisfieddependencyexception: error creating bean with name 'studentmapper' defined in file [e:\workspace_v1\order-user-ssm\target\classes\cn\baidu\mapper\studentmapper.class]: unsatisfied dependency expressed through bean property 'sqlsessionfactory'; nested exception is org.springframework.beans.factory.beancreationexception: error creating bean with name 'sqlsession' defined in class path resource [applicationcontext.xml]: invocation of init method failed; nested exception is org.springframework.core.nestedioexception: failed to parse mapping resource: 'file [e:\workspace_v1\order-user-ssm\target\classes\mapper\studentmapper.xml]'; nested exception is org.apache.ibatis.builder.builderexception: error parsing mapper xml. cause: org.apache.ibatis.builder.builderexception: error resolving class. cause: org.apache.ibatis.type.typeexception: could not resolve type alias 'student'. cause: java.lang.classnotfoundexception: cannot find class: student
-
错误原因:配置文件找不到student类,说明在填写配置文件全路径可能写错了
- 解决方法:重新对student类进行检查,检查配置文件中student类的路径是否写正确
- 整合过程可能出现的普遍性错误
1.在添加pom内容的时候,工程可能会出现一个红叉子,查看problem的内容标签,会报如下错误
-
- description resource path location typeproject configuration is not up-to-date with pom.xml. select:maven->update project... from the project context menu or use quickfix. order-user-ssm line1 maven configuration problem
- 出错原因:每当修改pom.xml文件时,工程可能会出现一个红叉子,查看problem标签会报出以上的错误
- 解决方法:更新maven项目即可
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