IDEA 使用Gradle 构建ssm（spring +springmvc+mybatis）项目

Gradle 构建ssm（spring +springmvc+mybatis）项目

• 使用 intellij idea 2018.2
• 集成 mybatis Generator，逆向生成entity，mapper，mapping
• mybatis框架
• spring mvc框架
• Gradle 管理

创建Gradle项目

1.创建gradle项目：File->New->Project

• 先给出项目结构避免不知道配置文件创建何处
  

添加springmvc框架

1.添加依赖

 //spring依赖
    compile 'org.springframework:spring-webmvc:5.1.1.RELEASE'
    compile 'org.springframework:spring-beans:5.1.1.RELEASE'
    compile 'org.springframework:spring-context:5.1.1.RELEASE'
    compile 'org.springframework:spring-context-support:5.1.1.RELEASE'
    compile 'org.springframework:spring-web:5.1.1.RELEASE'
    compile 'org.springframework:spring-tx:5.1.1.RELEASE'
    compile 'org.springframework:spring-jdbc:5.1.1.RELEASE'
    compile 'org.springframework:spring-test:5.1.1.RELEASE'

2. resource添加配置文件applicationContext.xml

<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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <context:component-scan base-package="org.controller">context:component-scan>

    
    <mvc:annotation-driven/>
    
    <mvc:default-servlet-handler/>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    bean>

beans>

3.配置web.xml

web.xml文件内容：里面涉及到的配置文件将在稍后进行介绍添加。

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <filter>
        <filter-name>characterEncodingFilterfilter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
        <init-param>
            <param-name>forceEncodingparam-name>
            <param-value>trueparam-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>characterEncodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

    
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListenerlistener-class>
    listener>

    
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
    listener>

    
    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:springConfig/spring-mybatis.xmlparam-value>
    context-param>

    
    <servlet>
        <servlet-name>dispatcherServletservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:springConfig/applicationContext.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
        <async-supported>trueasync-supported>
    servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServletservlet-name>
        
        <url-pattern>/url-pattern>
    servlet-mapping>
web-app>

3.添加全局spring配置文件
applicationContext.xml

<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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <context:component-scan base-package="org.controller">context:component-scan>

    
    <mvc:annotation-driven/>
    
    <mvc:default-servlet-handler/>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    bean>

beans>

4.在web.xml里配置，主要是以下内容，位置在图片里标注了

 <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:springConfig/applicationContext.xmlparam-value>
        init-param>

添加mybatis generator框架

1 .添加配置文件

• 在resource资源目录下创建jdbc_config.properties文件
  注：可以创建二级目录或者更改文件名，但要保证用到的地方名字保持一致，本项目文件名都是配好的可直接使用，更改文件名时请注意搜索一下引用，用到的包名需要一致，具体可查看目录结构。

# MySQL 驱动
jdbc.driverClassName = com.mysql.jdbc.Driver
# JDBC URL
jdbc.url =jdbc:mysql://127.0.0.1:3306/myproject?useUnicode:true&characterEncoding:UTF-8
# 数据库用户名及密码
jdbc.username = root
jdbc.password = 123456
# 实体类所在包
package.model = org.mybatis.entity
#  mapper 所在包
package.mapper = org.mybatis.mapper
#  mapper xml 文件所在包 默认存储在 resources 目录下
package.xml = mybatis/mapping


# 初始化连接大小
initialSize=0
# 连接池最大数量
maxActive=20
# 连接池最大空闲
maxIdle=20
# 连接池最小空闲
minIdle=1
# 获取连接最大等待时间
maxWait=60000

• resource目录下创建generatorConfig.xml配置文件
  注意包名一致

<generatorConfiguration>
    
    <context id="default" targetRuntime="MyBatis3Simple" defaultModelType="flat" >
        
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin">plugin>
        <commentGenerator>
            
            <property name="suppressAllComments" value="true">property>
            
            <property name="suppressDate" value="true">property>
            
            <property name="javaFileEncoding" value="utf-8"/>
            
            <property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter">property>
            
            <property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter"/>
        commentGenerator>

        
        <jdbcConnection driverClass="${driverClass}"
                        connectionURL="${connectionURL}"
                        userId="${userId}"
                        password="${password}">
        jdbcConnection>
        
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        javaTypeResolver>

        
        <javaModelGenerator targetPackage="${modelPackage}" targetProject="${src_main_java}">
            <property name="enableSubPackages" value="true">property>
            <property name="trimStrings" value="true">property>
        javaModelGenerator>

        
        <sqlMapGenerator targetPackage="${sqlMapperPackage}" targetProject="${src_main_resources}">
            <property name="enableSubPackages" value="true">property>
        sqlMapGenerator>
        
        
        <javaClientGenerator targetPackage="${mapperPackage}" targetProject="${src_main_java}" type="XMLMAPPER">
            <property name="enableSubPackages" value="true"/>
        javaClientGenerator>

        
        
        <table tableName="%">
            <generatedKey column="id" sqlStatement="Mysql" identity="true"/>
        table>
        
    context>
generatorConfiguration>

2.添加依赖

configurations {
    mybatisGenerator
}
    dependencies{
       //  mybatis-generator mybatis逆向
        mybatisGenerator 'org.mybatis.generator:mybatis-generator-core:1.3.7'
        mybatisGenerator 'mysql:mysql-connector-java:5.1.45'
        mybatisGenerator 'tk.mybatis:mapper:4.0.4'
        }
def getDbProperties = {
    def properties = new Properties()
    file("src/main/resources/myBatisGenerator/jdbc_config.properties").withInputStream { inputStream ->
        properties.load(inputStream)
    }
    properties
}

task mybatisGenerator << {
    def properties = getDbProperties()
    ant.properties['targetProject'] = projectDir.path
    ant.properties['driverClass'] = properties.getProperty("jdbc.driverClassName")
    ant.properties['connectionURL'] = properties.getProperty("jdbc.url")
    ant.properties['userId'] = properties.getProperty("jdbc.username")
    ant.properties['password'] = properties.getProperty("jdbc.password")
    ant.properties['src_main_java'] = sourceSets.main.java.srcDirs[0].path
    ant.properties['src_main_resources'] = sourceSets.main.resources.srcDirs[0].path
    ant.properties['modelPackage'] = properties.getProperty("package.model")
    ant.properties['mapperPackage'] = properties.getProperty("package.mapper")
    ant.properties['sqlMapperPackage'] = properties.getProperty("package.xml")
    ant.taskdef(
            name: 'mbgenerator',
            classname: 'org.mybatis.generator.ant.GeneratorAntTask',
            classpath: configurations.mybatisGenerator.asPath
    )
    ant.mbgenerator(overwrite: true,
            configfile: 'src/main/resources/myBatisGenerator/generatorConfig.xml', verbose: true) {
        propertyset {
            propertyref(name: 'targetProject')
            propertyref(name: 'userId')
            propertyref(name: 'driverClass')
            propertyref(name: 'connectionURL')
            propertyref(name: 'password')
            propertyref(name: 'src_main_java')
            propertyref(name: 'src_main_resources')
            propertyref(name: 'modelPackage')
            propertyref(name: 'mapperPackage')
            propertyref(name: 'sqlMapperPackage')
        }
    }
}

3.配置完成后生成文件

添加mybatis框架

1.添加依赖

dependencies{
//mybatis依赖
    compile 'org.mybatis:mybatis:3.4.6'
    //mysql依赖
    compile 'mysql:mysql-connector-java:5.1.45'
        //mybatis-spring整合
    compile 'org.mybatis:mybatis-spring:1.3.2'
    }
    

2.resource目录下添加配置文件spring-mybatis.xml

<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-3.1.xsd
 http://www.springframework.org/schema/context
 http://www.springframework.org/schema/context/spring-context-3.1.xsd
 http://www.springframework.org/schema/mvc
 http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    <context:component-scan base-package="org.mybatis.mapper" />
    
    <bean id="propertyConfigurer"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:myBatisGenerator/jdbc_config.properties" />
    bean>

    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        
        <property name="initialSize" value="${initialSize}">property>
        
        <property name="maxActive" value="${maxActive}">property>
        
            
        <property name="minIdle" value="${minIdle}">property>
        
        <property name="maxWait" value="${maxWait}">property>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        
        <property name="mapperLocations" value="classpath:mybatis/mapping/*.xml">property>
    bean>

    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="org.mybatis.mapper" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">property>
    bean>

    
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    bean>

beans>

3.web.xm里配置读取配置

    
    <context-param>
        <param-name>contextConfigLocationparam-name>
        <param-value>classpath:springConfig/spring-mybatis.xmlparam-value>
    context-param>

编写一个测试

• 已经生成mapper，entity，mapping等
• 创建一个UserController

/*
  Created by IntelliJ IDEA.
  User: Long
  Date: 2018/10/24
  Time: 11:30
  To change this template use File | Settings | File Templates.
*/
package org.controller;

import org.mybatis.entity.User;
import org.mybatis.mapper.UserMapper;
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 org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
public class UserController   {
    @Autowired
    private UserMapper userMapper;
    @RequestMapping(value = "/insert", produces={"application/json; charset=UTF-8"})
    @ResponseBody
    public String insertUser() {
        User user = new User();
        user.setEmail("sssssasas");
        user.setPassword("44555");
        user.setSex("sss");
        userMapper.insert(user);
        return user.toString();
    }

    @RequestMapping(value = "/findAll",produces={"application/json; charset=UTF-8"})
    public List<User> findAll() {
        return userMapper.selectAll();
    }
}

采坑批注

• 如果没有引入 mybatis和spring的整合包 compile 'org.mybatis:mybatis-spring:1.3.2'会出现错误，在 测试时会出现：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 

-解决方式：
引入依赖，并正确配置spring-mybatis.xml文件

附

• mybatis配置官方网站

• spring注解解析

• 依赖搜索网站