框架整合第一次测试,查询所有_java测试查询全部年级-优快云博客

本文链接：https://blog.youkuaiyun.com/fdk2zhang/article/details/83096382

本文详细介绍了一个使用Spring、Spring MVC和MyBatis（SSM）框架整合的实战项目，包括pom.xml配置、web.xml设置、Spring.xml配置、Mapper文件定义、Controller与Service层实现，以及DAO层操作。

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pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<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.qf</groupId>
  <artifactId>ssm1015</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm1015 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>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
      <springversion>5.0.8.RELEASE</springversion>
  </properties>

  <dependencies>




      <!-- 加入ServletAPI -->
      <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.1.0</version>
          <scope>provided</scope>
      </dependency>


      <!-- MySQL依赖 start -->
      <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.38</version>
      </dependency>

      <!-- MySQL依赖 end -->



      <!-- 加入MyBatis 依赖 start -->
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.4.0</version>
      </dependency>

      <!-- 加入MyBatis 依赖 end -->

      <!-- 引入Spring(包含SpringMVC) 依赖 start -->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-core</artifactId>
          <version>${springversion}</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>${springversion}</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-oxm</artifactId>
          <version>${springversion}</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>${springversion}</version>
      </dependency>


      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>${springversion}</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>${springversion}</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-aop</artifactId>
          <version>${springversion}</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context-support</artifactId>
          <version>${springversion}</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-test</artifactId>
          <version>${springversion}</version>
      </dependency>

      <!-- 引入Spring 依赖 end -->

      <!-- 引用c3p0 依赖 start-->
      <dependency>
          <groupId>com.mchange</groupId>
          <artifactId>c3p0</artifactId>
          <version>0.9.2.1</version>
      </dependency>
      <!-- 引用c3p0 依赖 end-->

      <!-- 引用插件依赖：MyBatis整合Spring -->
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.3.0</version>
      </dependency>

      <!-- JSTL -->
      <dependency>
          <groupId>jstl</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
      </dependency>
  </dependencies>

  <build>
    <finalName>ssm1015</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.7.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.20.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

web.xml

<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>Archetype Created Web Application</display-name>
  <!--处理乱码-->
  <filter>
    <filter-name>bb</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>bb</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!--核心控制器-->
  <servlet>
    <servlet-name>aa</servlet-name>
    <servlet-class>
      org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>aa</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

Spring.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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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
       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/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">


    <!--1.扫描注解包-->
     <context:component-scan base-package="com"></context:component-scan>
     <!--2.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>
    <!--3.配置静态资源-->
    <mvc:annotation-driven></mvc:annotation-driven>
    <mvc:resources mapping="/image/**" location="/image/"/>
    <!--4.连接数据库-->
    <bean id="db" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/chaoshi"></property>
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="user" value="root"></property>
        <property name="password" value="123456"></property>
    </bean>
   <bean id="fac" class="org.mybatis.spring.SqlSessionFactoryBean">
       <property name="dataSource" ref="db"></property>
       <property name="mapperLocations" value="classpath:/mapper/*.xml"></property>
   </bean>
   <bean id="temp" class="org.mybatis.spring.SqlSessionTemplate">
        <!--构造方法参数没有,index=0-->
         <constructor-arg index="0" ref="fac"></constructor-arg>
   </bean>




</beans>

mapper/userDaomapper.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">

<mapper namespace="com.dao.UsersDao">
      <select id="getall" resultType="com.bean.Users">
            select * from users
      </select>
</mapper>

com.web.UserController.java

@Controller
public class UserController {
    @Autowired
    private UserService service;

    @RequestMapping("chaxun")
    public String chaxun(ModelMap map){
        List list=service.getall();
        map.put("ulist",list);
        return "show";
    }

}

com.service.UserDao.java

public interface UserService {
    public List getall();
}

com.service.impl.UserServiceImpl.java

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UsersDao dao;
    @Override
    public List getall() {
        return dao.getall();
    }
}

com.dao.UserDao.java

public interface UsersDao {
    public List getall();
}

com.dao.impl.UserDaoImpl.java

@Repository
public class UsersDaoImpl implements UsersDao {
    @Autowired
    private SqlSessionTemplate  sqlSessionTemplate;


    @Override
    public List getall() {
        System.out.println("getall--dao");
        return sqlSessionTemplate.selectList("com.dao.UsersDao.getall");
    }
}

com.been.User.java

public class Users {
    private int userid;
    private String username;
    private String password;

    public int getUserid() {
        return userid;
    }

    public void setUserid(int userid) {
        this.userid = userid;
    }

    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;
    }
}