HelloWorld+通用mapper+durid测试数据联通

HelloWorld+通用mapper+durid测试数据库联通

1.先看下项目文件夹目录

2.贴下项目的配置文件

pom.xml项目的依赖文件

<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.zhdr</groupId>  <artifactId>springmvc</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>springmvc Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <spring.version>4.3.8.RELEASE</spring.version>    <mybatis.version>3.4.4</mybatis.version>    <slf4j.version>1.6.6</slf4j.version>    <log4j.version>1.2.12</log4j.version>    <mysql.version>6.0.6</mysql.version>    <jackson.version>2.8.8</jackson.version>    <pagehelper.version>3.7.5</pagehelper.version>    <mapper.version>2.3.4</mapper.version>    <jsqlparser.version>0.9.1</jsqlparser.version>  </properties>  <dependencies>    <!-- 添加Spring依赖 -->    <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-context-support</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aop</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-aspects</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-tx</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-jdbc</artifactId>      <version>${spring.version}</version>    </dependency>    <!-- spring webmvc相关jar -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring.version}</version>    </dependency>    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-web</artifactId>      <version>${spring.version}</version>    </dependency>    <!--spring单元测试依赖 -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-test</artifactId>      <version>${spring.version}</version>      <scope>test</scope>    </dependency>    <!-- mysql驱动包 -->    <dependency>      <groupId>mysql</groupId>      <artifactId>mysql-connector-java</artifactId>      <version>${mysql.version}</version>    </dependency>    <!--通用mapper-->    <dependency>      <groupId>tk.mybatis</groupId>      <artifactId>mapper</artifactId>      <version>3.4.0</version>    </dependency>    <!-- 分页助手 -->    <dependency>      <groupId>com.github.pagehelper</groupId>      <artifactId>pagehelper</artifactId>      <version>5.0.2</version>    </dependency>    <!-- druid连接池 -->    <dependency>      <groupId>com.alibaba</groupId>      <artifactId>druid</artifactId>      <version>1.0.31</version>    </dependency>    <!-- Jackson Json处理工具包 -->    <dependency>      <groupId>com.fasterxml.jackson.core</groupId>      <artifactId>jackson-databind</artifactId>      <version>${jackson.version}</version>    </dependency>    <!--log4j2-->    <dependency>      <groupId>org.apache.logging.log4j</groupId>      <artifactId>log4j-api</artifactId>      <version>2.8.2</version>    </dependency>    <dependency>      <groupId>org.apache.logging.log4j</groupId>      <artifactId>log4j-core</artifactId>      <version>2.8.2</version>    </dependency>    <!--mybatis依赖 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis</artifactId>      <version>${mybatis.version}</version>    </dependency>    <!-- mybatis/spring包 -->    <dependency>      <groupId>org.mybatis</groupId>      <artifactId>mybatis-spring</artifactId>      <version>1.3.0</version>    </dependency>    <!-- 添加servlet3.0核心包 -->    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>javax.servlet-api</artifactId>      <version>3.0.1</version>    </dependency>    <dependency>      <groupId>javax.servlet.jsp</groupId>      <artifactId>javax.servlet.jsp-api</artifactId>      <version>2.3.2-b01</version>    </dependency>    <!-- jstl -->    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>jstl</artifactId>      <version>1.2</version>    </dependency>    <!--单元测试依赖 -->    <dependency>      <groupId>junit</groupId>      <artifactId>junit</artifactId>      <version>4.12</version>      <scope>test</scope>    </dependency>  </dependencies>  <build>    <!--项目打包后的名称-->    <finalName>springmvc</finalName>    <resources>      <resource>        <directory>src/main/resources</directory>        <includes>          <include>**/*.properties</include>          <include>**/*.xml</include>          <include>**/*.tld</include>        </includes>        <filtering>false</filtering>      </resource>      <resource>        <directory>src/main/java</directory>        <includes>          <include>**/*.properties</include>          <include>**/*.xml</include>          <include>**/*.tld</include>        </includes>        <filtering>false</filtering>      </resource>    </resources>  </build></project>

web.xmlwar包必须配置

<?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>springmvc</display-name>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>  <!-- 解决PUT和DELETE无法提交表单的问题 -->  <filter>    <filter-name>HttpMethodFilter</filter-name>    <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>  </filter>  <filter-mapping>    <filter-name>HttpMethodFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>  <!-- 将POST请求转化为DELETE或者是PUT 要用_method指定真正的请求参数 -->  <filter>    <filter-name>HiddenHttpMethodFilter</filter-name>    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  </filter>  <!-- 解决POST乱码问题 -->  <filter>    <filter-name>encoding</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>encoding</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>  <!-- 配置springMVC前端控制器 -->  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <!-- springMVC全局配置文件 -->      <param-name>contextConfigLocation</param-name>      <param-value>classpath:spring/springmvc.xml</param-value>    </init-param>    <!-- springmvc随着容器的启动而启动 -->    <load-on-startup>1</load-on-startup>  </servlet>  <!--配置加载spring配置文件位置-->  <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:spring/applicationContext-*.xml</param-value>  </context-param>  <!-- 配置spring的监听器 -->  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <!-- 所有以rest开头的请求进入SpringMVC -->    <url-pattern>/rest/*</url-pattern>  </servlet-mapping></web-app>

springmvc.xml配置一下试图解析器、注解、跨域什么的

<?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: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-4.0.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <!-- 配置controller扫描 -->    <context:component-scan base-package="com.zhdr.controller" />    <!-- 配置注解驱动 -->    <mvc:annotation-driven />    <!-- 配置视图解析器 ,配置前缀和后缀 -->    <bean        class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/WEB-INF/views/" />        <property name="suffix" value=".jsp" />    </bean></beans>

applicationContext-service.xml可以配置事务，或者开启事务注解

<?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: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-4.0.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <!-- 扫描service注解 -->    <context:component-scan base-package="com.zhdr.service" />    <mvc:annotation-driven/></beans>

applicationContext-dao.xml配置数据源以及要扫描的mapper包

<?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: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-4.0.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">    <!-- 配置 读取properties文件 jdbc.properties -->    <context:property-placeholder location="classpath:resource/*.properties" />    <!-- 配置数据源 -->    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">        <!-- 基本属性 url、user、password -->        <property name="url" value="${jdbc_url}" />        <property name="username" value="${jdbc_user}" />        <property name="password" value="${jdbc_password}" />        <!-- 配置初始化大小、最小、最大 -->        <property name="initialSize" value="1" />        <property name="minIdle" value="1" />        <property name="maxActive" value="20" />        <!-- 配置获取连接等待超时的时间 -->        <property name="maxWait" value="60000" />        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->        <property name="timeBetweenEvictionRunsMillis" value="60000" />        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->        <property name="minEvictableIdleTimeMillis" value="300000" />        <property name="validationQuery" value="SELECT 'x'" />        <property name="testWhileIdle" value="true" />        <property name="testOnBorrow" value="false" />        <property name="testOnReturn" value="false" />        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->        <property name="poolPreparedStatements" value="true" />        <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />        <!-- 配置监控统计拦截的filters -->        <property name="filters" value="stat" />    </bean>    <!-- 配置SqlSessionFactory -->    <bean class="org.mybatis.spring.SqlSessionFactoryBean">        <!-- 配置数据源 -->        <property name="dataSource" ref="dataSource" />        <!-- 加载MyBatis配置文件 -->        <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml" />    </bean>    <!-- 配置Mapper扫描 -->    <bean class="tk.mybatis.spring.mapper.MapperScannerConfigurer">        <!-- Mapper扫描包 -->        <property name="basePackage" value="com.zhdr.mapper" />    </bean></beans>

SqlMapConfig.xml可以在这里配置一些对mybatis的插件，比如通用mapper,分页插件pageHelper

<?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>        <!-- 开启驼峰自动映射 -->        <setting name="mapUnderscoreToCamelCase" value="true" />    </settings><!--    <typeAliases>        <package name="com.qhcp.manager.pojo" />    </typeAliases>-->    <plugins>        <!-- com.github.pagehelper为PageHelper类所在包名 -->        <plugin interceptor="com.github.pagehelper.PageInterceptor">            <!-- 使用下面的方式配置参数，后面会有所有的参数介绍 -->        </plugin>    </plugins></configuration>

jdbc.properties数据库的一些连接属性

jdbc.driver=com.mysql.jdbc.Driverjdbc_url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTCjdbc_user=rootjdbc_password=abc123

3.java代码

代码包结构如下

CountryController.java

package com.zhdr.controller;import com.zhdr.model.Country;import com.zhdr.service.CountryService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import java.util.List;/** * Created by 折花道人 on 2017/6/5. */@Controller@RequestMapping("/country")public class CountryController {    @Autowired    private CountryService countryService;    @RequestMapping("/all")    @ResponseBody    public List<Country> queryAll() {        return this.countryService.queryAll();    }}

CountryService.java这是个接口

package com.zhdr.service;import com.zhdr.model.Country;import java.util.List;/** * Created by 折花道人 on 2017/6/5. */public interface CountryService {    List<Country> queryAll();}

CountryServiceIpml.java

package com.zhdr.service.impl;import com.zhdr.mapper.CountryMapper;import com.zhdr.model.Country;import com.zhdr.service.CountryService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import java.util.List;/** * Created by 折花道人 on 2017/6/5. */@Servicepublic class CountryServiceIpml implements CountryService {    @Autowired    private CountryMapper countryMapper;    public List<Country> queryAll() {        return this.countryMapper.selectAll();    }}

CountryMapper.java这也是个接口，继承了通用mapper,方便单表查询，多表的话还是老老实实的写mapper.xml吧

package com.zhdr.mapper;import com.zhdr.model.Country;import tk.mybatis.mapper.common.Mapper;/** * Created by Administrator on 2017/2/15. */public interface CountryMapper extends Mapper<Country> {}

CountryMapper.xml当通用mapper不能满足业务需求的时候就来这里加

<?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.zhdr.mapper.CountryMapper">  <resultMap id="BaseResultMap" type="com.zhdr.model.Country">    <!--      WARNING - @mbg.generated      This element is automatically generated by MyBatis Generator, do not modify.      This element was generated on Thu Feb 16 16:25:09 CST 2017.    -->    <id column="country_id" jdbcType="INTEGER" property="countryId" />    <result column="country" jdbcType="VARCHAR" property="country" />    <result column="last_update" jdbcType="TIMESTAMP" property="lastUpdate" />  </resultMap></mapper>

然后运行下tomcat，在浏览器里输入http://localhost:8080/rest/country/all，没出错就能查出数据库的数据到页面的