1、下载SpringMVC框架架包,下载地址:
点击打开地址如图所示,点击下载即可
然后把相关的jar复制到lib下导入
2、MyBatis(3.4.2)下载
MyBatis中文文档地址
下载解压之后把jar复制到lib下导入,大概是这样子的
3、jdbc连接库还没有下载。。。这个是5.1.41版本的。。。
解压之后这样子。。。
4、fastjson 阿里巴巴的json解析库
版本是1.2.24 这个是托管到了github上面的,地址是:点击进入
5、创建WebProject
注意下一步有个选项,如果不勾选,默认是不会生成web.xml的
6、项目创建完毕,把之前的包都弄进来。。
web.xml
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<? xml version = "1.0" encoding = "UTF-8" ?> < web-app xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns = "http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation = "http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id = "WebApp_ID" version = "3.1" > < display-name >CoolWeb</ display-name > < welcome-file-list > < welcome-file >index.html</ welcome-file > < welcome-file >index.htm</ welcome-file > < welcome-file >index.jsp</ welcome-file > < welcome-file >default.html</ welcome-file > < welcome-file >default.htm</ welcome-file > < welcome-file >default.jsp</ welcome-file > </ welcome-file-list > < servlet > < servlet-name >CoolWeb</ servlet-name > < servlet-class >org.springframework.web.servlet.DispatcherServlet</ servlet-class > < init-param > < param-name >contextConfigLocation</ param-name > <!-- <param-value>classpath:application-context.xml</param-value> --> < param-value >classpath:CoolWeb-servlet.xml</ param-value > </ init-param > <!-- classpath:只会到你的class路径中查找找文件; classpath*:不仅包含class路径,还包括jar文件中(class路径)进行查找. --> < load-on-startup >1</ load-on-startup > </ servlet > <!-- 如果不配置servlet-mapping服务器就无法响应/请求 --> < servlet-mapping > < servlet-name >CoolWeb</ servlet-name > < url-pattern >/</ url-pattern > </ servlet-mapping > </ web-app > |
7、在src下创建CoolWeb-servlet.xml
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<? 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:mvc = "http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd 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-4.3.xsd"> <!-- 开启SpringMVC注解 --> < context:component-scan base-package = "com.vincent.lwx" /> < mvc:annotation-driven /> </ beans > |
8、在src下编写ApplicationContext.xml文件
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<? 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:mvc = "http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd 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-4.3.xsd"> < context:component-scan base-package = "com.vincent.lwx" /> < mvc:annotation-driven /> <!-- User实体类 --> < bean id = "user" class = "com.vincent.lwx.bean.User" /> <!-- 支持上传文件 --> < bean id = "multipartResolver" class = "org.springframework.web.multipart.commons.CommonsMultipartResolver" > < property name = "defaultEncoding" value = "UTF-8" /> <!-- max size:10M --> < property name = "maxUploadSize" value = "10485760" /> </ bean > </ beans > |
User实体类要在这里注册
9、在src下编写mybatis.xml
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<? 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 > < environments default = "development" > < environment id = "development" > < transactionManager type = "JDBC" /> <!-- 配置数据库连接信息 --> < dataSource type = "POOLED" > < property name = "driver" value = "com.mysql.jdbc.Driver" /> <!-- 注意3306后面是数据库名称 autoReconnect自动重连--> < property name = "url" value = "jdbc:mysql://localhost:3306/cool?useUnicode=true&characterEncoding=utf-8&useSSL=false&autoReconnect=true" /> < property name = "username" value = "root" /> < property name = "password" value = "root" /> </ dataSource > </ environment > </ environments > < mappers > < mapper resource = "com/vincent/lwx/dao/UserMapping.xml" /> </ mappers > </ configuration > |
10、log4j.xml配置
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<? xml version = "1.0" encoding = "UTF-8" ?> < configuration status = "debug" > < appenders > < Console name = "Console" target = "SYSTEM_OUT" > < ThresholdFilter level = "trace" onMatch = "ACCEPT" onMismatch = "DENY" /> < PatternLayout pattern = "%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level %class{36} %L %M - %msg%xEx%n" /> </ Console > < RollingFile name = "RollingFile" fileName = "D:logs/schoolmallapi.log" filePattern = "log/$${date:yyyy-MM}yimoServiceRun-%d{MM-dd-yyyy}-%i.log.gz" > < PatternLayout pattern = "%d{yyyy-MM-dd 'at' HH:mm:ss z} %-5level %class{36} %L %M - %msg%xEx%n" /> < SizeBasedTriggeringPolicy size = "15MB" /> </ RollingFile > </ appenders > < loggers > < root level = "DEBUG" > < appender-ref ref = "RollingFile" /> < appender-ref ref = "Console" /> </ root > </ loggers > <!-- 下面是打印 mybatis语句的配置 --> < logger name = "com.ibatis" additivity = "true" > < level value = "DEBUG" /> </ logger > < logger name = "java.sql.Connection" additivity = "true" > < level value = "DEBUG" /> </ logger > < logger name = "java.sql.Statement" additivity = "true" > < level value = "DEBUG" /> </ logger > < logger name = "java.sql.PreparedStatement" additivity = "true" > < level value = "DEBUG" /> </ logger > < logger name = "java.sql.ResultSet" additivity = "true" > < level value = "DEBUG" /> </ logger > < root > < level value = "DEBUG" /> < appender-ref ref = "CONSOLE" /> <!-- <appender-ref ref="FILE" /> --> <!-- <appender-ref ref="framework" /> --> </ root > </ configuration > |
这个配置貌似有点问题,虽然不影响使用,不过我也没有去深入研究还,最近还要准备面试Android哎。。。
现在差不多是这样子咯
11、环境搭建差不多了,现在开始撸代码,写一个注册的动能吧
简历一个实体类User.Java
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package com.vincent.lwx.bean; import java.io.Serializable; import lombok.Data; import lombok.Getter; import lombok.Setter; /** * @Title: User.java * @Package com.vincent.lwx.bean * @Description: TODO(用一句话描述该文件做什么) * @author Vincent * @date 2017年3月3日 下午6:36:58 * @version V1.0 */ public class User implements Serializable{ /** * 序列化id */ private static final long serialVersionUID = -6375697395831845246L; /** * 用户id */ private @Getter String user_id; /** * 用户手机号码 */ private @Setter @Getter String phone; /** * 密码 */ private @Setter @Getter String password; /** * 用户名 */ private @Setter @Getter String nickname; /** * 用户头像地址 */ private @Setter @Getter String head; /** * 性别 */ private @Setter @Getter String sex; /** * 生日 */ private @Setter @Getter String birthday; /** * 生活状态(发表的说说) */ private @Setter @Getter String live_status; } |
编写MyBatis的实体类映射xml文件,就写个UserMapping.xml好了,表示为用户相关的操作
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<? 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.vincent.lwx.mapping.UserMapping" > <!-- 根据手机号码查询用户是否存在 --> < select id = "selectUser" parameterType = "String" resultType = "com.vincent.lwx.bean.User" > select * from user where phone = #{phone} </ select > </ mapper > |
我这里只写了一个,别的还没写,注册之前先查询一下手机号码是否已注册。。
注意这里的id 不能重复,要具有唯一性。parameterType是传入的参数类型,这里是String类型的phone,如果要传入多个参数可以使用User对象,或者Map,resultType返回结果类型,我这里是直接返回一个User对象,之前用jdbc直接连接数据库,返回的东西还要手动封装,这个快多了。。。
创建MyBatisUtils.java类,用来从数据库获取SqlSession对象的,SqlSession执行sql语句,和jdbc的Statement对象差不多感觉。。。也可能我的感觉是错的,哈哈,还没看源码。。。
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package com.vincent.lwx.db; import java.io.IOException; import java.io.Reader; import java.util.Timer; import java.util.TimerTask; import org.apache.ibatis.io.Resources; import org.apache.ibatis.session.SqlSession; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.ibatis.session.SqlSessionFactoryBuilder; import com.vincent.lwx.util.EatTimerTask; /** * @Title: MyBatisUtils.java * @Package com.vincent.julie.config * @Description: TODO(��һ�仰�������ļ���ʲô) * @author Vincent * @date 2017��2��18�� ����12:05:35 * @version V1.0 */ public class MyBatisUtils { private static SqlSessionFactory sqlSessionFactory; private static SqlSession sqlSession; private static long timeInterval; //上一次运行的时间 private static TimerTask task = null ; static { String resource = "mybatis.xml" ; Reader reader = null ; try { reader = Resources.getResourceAsReader(resource); } catch (IOException e) { System.out.println(e.getMessage()); } sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader); } /** * * @return */ public static SqlSessionFactory getSqlSessionFactory() { return sqlSessionFactory; } /** * ��ȡsqlSession���� * @return */ public static SqlSession getSqlSession(){ if (task != null ){ task.cancel(); //将原任务从队列中移除 } task = new EatTimerTask(); timeInterval = System.currentTimeMillis(); //间隔�?1小时 long period = 1000 * 60 * 60 ; //测试时间每分钟一�? //period = 1000 * 60; Timer timer = new Timer(); timer.schedule(task, timeInterval, period); if (sqlSessionFactory == null ){ sqlSessionFactory = MyBatisUtils.getSqlSessionFactory(); } sqlSession = sqlSessionFactory.openSession(); return sqlSession; } } |
这里有个计时器,我发现Tomcat运行一段时间之后(听说是10小时)如果没有连接数据库,会出现异常。。
好,现在来写UserController.java类,处理客户端的请求
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package com.vincent.lwx.controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.ibatis.session.SqlSession; import org.apache.log4j.LogManager; import org.apache.log4j.Logger; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import com.vincent.lwx.bean.ServiceStatus; import com.vincent.lwx.bean.User; import com.vincent.lwx.db.MyBatisUtils; import com.vincent.lwx.util.ResponseUtils; /** * @Title: UserControl.java * @Package com.vincent.lwx.mapping * @Description: TODO(��һ�仰�������ļ���ʲô) * @author Vincent * @date 2017��3��3�� ����6:28:37 * @version V1.0 */ @Controller public class UserController { private static final Logger logger = LogManager.getLogger(UserController. class ); /** * 注册 * @param phone * @param password * @param request * @param response */ @RequestMapping (value = "register" , method = RequestMethod.POST) public void registerUser( @RequestParam ( "phone" )String phone, @RequestParam ( "password" )String password,HttpServletRequest request,HttpServletResponse response){ if (hasUserPhone(phone)){ //用户已存在,无须再次注册 ResponseUtils.renderJsonDataFail(response, ServiceStatus.RUNTIME_EXCEPTION, "该号码已被注册" ); return ; } } /** * 根据手机号码查询用户是否存在 * @param phone * @return */ public boolean hasUserPhone(String phone){ /**sql 语句 完整的包名类名和方法id,*/ String sql = "com.vincent.lwx.mapping.UserMapping.selectUser" ; SqlSession session = MyBatisUtils.getSqlSession(); /**返回一个User对象*/ User user = session.selectOne(sql, phone); if (user!= null ){ //用户已存在 return true ; } else { //用户不存在 return false ; } } } |
10、最后一步,让Tomcat跑起来,好吧,下载Tomcat
这个版本是Tomcat9.0的
如果不会部署的话可以看这里的 部署Tomcat
11、东西写完了不叫最后一步,最后一步应该自己测试一下,google浏览器自带Postman检查一下接口的正确性
因为我的数据库我已经自己注册了,所以提示是正确的,另外附上user表的sql语句:
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CREATE DETABASE cool; //创建数据库并指定字符编码集 CREATE DATABASE cool DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci; //创建表 create table user ( user_id int (10) not null primary key auto_increment, phone varchar (11) not null , password varchar (16) not null , nickname varchar (36), head varchar (50), sex varchar (3), birthday varchar (10) default '1992-01-01' , live_status varchar (255) )engine = InnoDB default charset=utf8; //限制最小id=10000 alter table user AUTO_INCREMENT=10000;设置已经存在的表的默认值 //限制手机号码唯一性 alter table user add unique (phone); 字段值唯一性约束 insert into user (phone, password ) values ( '18696855784' , '555555' ); |
Github地址进入
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://blog.csdn.net/pkandroid/article/details/60157711