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    3. 搭建ssm环境，各种xml配置

    搭建ssm环境，各种xml配置

    技术2022-07-17  82

    搭建ssm环境，各种xml配置

    学完了ssm之后强烈建议大家去学习springboot，我当初也是学完ssm后看了几篇博客就开始使用springboot写项目。那是真的爽，根本不需要什么配置，开箱即用，想到当初搭建ssm环境时各种崩溃吐血，现在把一个简单的环境搭建分享出来。

    这里写目录标题

    搭建ssm环境，各种xml配置实体类Accountdao接口的注解开发service接口service实现类controller控制器方法用来测试的前端test.html（导入了jquery.min.js）视图解析器跳转位置success.html配置springmvc.xml配置applicationContext.xml添加jdbc.properties文件内容（数据库资源）在web.xml中添加前端控制器，监听器（扫描applicationContext.xml），格式转码添加pom.xml依赖ssm工程结构图

    实体类Account

    添加get和set方法，添加toString方法

    private int id; private String name; private float money;
    dao接口的注解开发

    用注解方式： @Repository(“accountDao”)实体注入 @Insert 插入数据 @Delete 删除数据 @Select 查询数据 @Update 更新数据

    package cn.com.dao; import java.util.List; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Select; import org.springframework.stereotype.Repository; import cn.com.entity.Account; @Repository("accountDao") public interface IAccountDao { /** * 查询所有 * @return */ @Select("select * from account1") List<Account> finall(); /** * 添加信息 * @param account */ @Insert("insert into account1 (name,money) values(#{name},#{money})") void addInfo(Account account); }
    service接口
    package cn.com.service; import java.util.List; import cn.com.entity.Account; public interface IAccountService { /** * 查询所有 * @return */ List<Account> finall(); /** * 添加信息 * @param account */ void addInfo(Account account); }
    service实现类
    package cn.com.service.impl; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import cn.com.dao.IAccountDao; import cn.com.entity.Account; import cn.com.service.IAccountService; @Service("accountService") public class AccountServiceImpl implements IAccountService{ @Autowired private IAccountDao accountDao; @Override public List<Account> finall() { System.out.println("service中的finall实现了......"); return accountDao.finall(); } @Override public void addInfo(Account account) { accountDao.addInfo(account); } }
    controller控制器方法
    package cn.com.controller; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import cn.com.entity.Account; import cn.com.service.IAccountService; @Controller @RequestMapping("/account") public class AccountController { @Autowired private IAccountService accountService; @RequestMapping("/findAll") public String findAll() { System.out.println("controller执行了..."); List<Account> accounts = accountService.finall(); for(Account account : accounts) { System.out.println(account); } return "success"; } //使用@RequestBody注解把json的字符串转换成JavaBean的对象 // 使用@ResponseBody注解把JavaBean对象转换成json字符串，直接响应 @RequestMapping("/addInfo") @ResponseBody public Account addInfo(@RequestBody Map<String,Object> map,Account account) throws Exception { System.out.println("addInfo执行了......"); //将map转换成Javabean BeanUtils.populate(account, map); accountService.addInfo(account); return account; } }
    用来测试的前端test.html（导入了jquery.min.js）
    <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <script type="text/javascript" src="../js/jquery.min.js"></script> <title>Insert title here</title> </head> <script type="text/javascript"> function run(){ var name = $("#name").val() var money = $("#money").val() var info = {"name":name,"money":money}; console.log(name) console.log(money) $.ajax({ type:"post", url:"../account/addInfo", data:JSON.stringify(info), contentType: 'application/json; charset=UTF-8', dataType:"json", success: function(data){ alert(data.name) alert(data.money) } }); } </script> <body> <a href="../account/findAll">查询所有信息</a><br> name:<input id="name" name="name"><br> money:<input id="money" name="money"><br> <button onclick="run()">ok</button> </body> </html>
    视图解析器跳转位置success.html
    <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body> <h1>success</h1> </body> </html>
    配置springmvc.xml
    <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" 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.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"> <!--开启注解扫描，只扫描Controller注解(要写到最终包下)--> <context:component-scan base-package="cn.com.controller"> <!-- 只扫描Controller注解 --> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!--配置的视图解析器对象--> <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/html/"/> <property name="suffix" value=".html"/> </bean> <!--过滤静态资源--> <mvc:resources location="/css/" mapping="/css/**" /> <mvc:resources location="/images/" mapping="/images/**" /> <mvc:resources location="/js/" mapping="/js/**" /> <mvc:resources location="/html/" mapping="/html/**" /> <!--开启SpringMVC注解的支持--> <mvc:annotation-driven/> </beans>
    配置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: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/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 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"> <!--开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理--> <context:component-scan base-package="cn.com" > <!--配置哪些注解不扫描--> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!-- 配置整合mybatis过程 --> <!-- 1.配置数据库相关参数properties的属性：${url} --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- 2.数据库连接池 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- 配置连接池属性 --> <property name="driverClass" value="${jdbc.driver}" /> <property name="jdbcUrl" value="${jdbc.url}" /> <property name="user" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <!-- c3p0连接池的私有属性 --> <property name="maxPoolSize" value="20" /> <property name="minPoolSize" value="5" /> <!-- 关闭连接后不自动commit --> <property name="autoCommitOnClose" value="false" /> <!-- 获取连接超时时间 --> <property name="checkoutTimeout" value="10000" /> <!-- 当获取连接失败重试次数 --> <property name="acquireRetryAttempts" value="2" /> </bean> <!-- 3.配置SqlSessionFactory对象 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入数据库连接池 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 4.配置扫描Dao方法接口包，动态实现Dao接口，注入到spring容器中 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 注入sqlSessionFactory --> <property name="sqlSessionFactoryBeanName" ref="sqlSessionFactory" /> <!-- 给出需要扫描Dao接口包 --> <property name="basePackage" value="cn.com.dao" /> </bean> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!-- 注入数据库连接池 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 配置基于注解的声明式事务 --> <tx:annotation-driven transaction-manager="transactionManager" /> </beans>
    添加jdbc.properties文件内容（数据库资源）
    jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/heima?characterEncoding=utf8 jdbc.username=root jdbc.password=123456
    在web.xml中添加前端控制器，监听器（扫描applicationContext.xml），格式转码
    <?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" id="WebApp_ID" version="2.5"> <!--配置Spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml配置文件--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!--设置配置文件的路径--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!--配置前端控制器--> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--加载springmvc.xml配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!--启动服务器，创建该servlet--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--解决中文乱码的过滤器--> <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> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
    添加pom.xml依赖
    <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.ssm</groupId> <artifactId>ssm</artifactId> <version>1.0</version> <packaging>war</packaging> <name>ssm Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <spring.version>5.0.2.RELEASE</spring.version> <slf4j.version>1.6.6</slf4j.version> <log4j.version>1.2.12</log4j.version> <mysql.version>5.1.6</mysql.version> <mybatis.version>3.4.5</mybatis.version> </properties> <dependencies> <!-- spring --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.6.8</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</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-web</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-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-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>compile</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> <type>jar</type> <scope>compile</scope> </dependency> <!--json数据格式转换--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.9.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.9.0</version> </dependency> <!-- JSONObject对象依赖的jar包 --> <dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.9.3</version> </dependency> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.1</version> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>net.sf.ezmorph</groupId> <artifactId>ezmorph</artifactId> <version>1.0.6</version> </dependency> <dependency> <groupId>net.sf.json-lib</groupId> <artifactId>json-lib</artifactId> <version>2.2.3</version> <classifier>jdk15</classifier><!-- 指定jdk版本 --> </dependency> </dependencies> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> </project>
    ssm工程结构图

    搭建的环境的时候还有个很大的问题，就是maven导入的jar包版本不兼容，当初为了这事折腾了好久，下次出一期关于maven和jar包依赖的文章。

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