1、新建一个工程
new-->maven project-->next-->next-->在filter中搜索webapp-->group id、Artifact id-->完成。
2、配置pom.xml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>cn.mg39.ssm</groupId> <artifactId>test03</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>test03 Maven Webapp</name> <url>http://maven.apache.org</url> <!--第一步 spring官方的叫stater poms,它可以提供dependency management, 也就是依赖管理,引入以后在声明其它dependency的时候就不需要version了 但是mybatis需要?????--> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.3.RELEASE</version> </parent> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <!-- <version>4.0</version> --> <scope>test</scope> </dependency> <!--第二步 官方解释spring-boot-start-web包含了spring webmvc和tomcat等web开发的特性--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--添加MySQL的jar --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <!--添加mybatis的jar --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <!--添加模板框架thymeleaf --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <!--模板框架依赖的jar --> <dependency> <groupId>net.sourceforge.nekohtml</groupId> <artifactId>nekohtml</artifactId> <!-- <version>1.9.22</version> --> </dependency> </dependencies> <build> <finalName>test03</finalName> <!--第三步 如果我们要直接Main启动spring,那么以下plugin必须要添加,否则是无法启动的。如果使用maven的spring-boot:run的话就不需要此配置。--> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin </artifactId> </plugin> </plugins> </build> </project>
3、编写测试类(包名必须是其他包的父包,不然无法进入controller类)
测试类是程序的入口。写完项目后在此类右键-->Java Application就可以运行。
Test03.java
package cn.mg39.ssm; //此包是其他所有包的父包,也就是其他所有包都要以cn.mg39.ssm开头,如cn.mg39.ssm.dao import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * 添加注解 */ @RestController @SpringBootApplication /** * 测试类名随便写,Test03是因这是我第三个boot * @author zhangzimu * */ public class Test03 { /** * 当项目运行起来时,在浏览器输入http://localhost:8080/login。页面就会有helloworld字样。 * @return */ @RequestMapping("/login") public String login() { return "HelloWorld"; } public static void main(String[] args) { SpringApplication.run(Test03.class, args); } }
4、建实体类(SysGroup)
SysGroup.java
package cn.mg39.ssm.entity; /** * 分组实体 * */ public class SysGroup { private Integer id; //分组id private String name; //组名 private String remark; //备注 public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getRemark() { return remark; } public void setRemark(String remark) { this.remark = remark; } public SysGroup() { super(); // TODO Auto-generated constructor stub } public SysGroup(Integer id, String name, String remark) { super(); this.id = id; this.name = name; this.remark = remark; } public SysGroup(Integer id) { super(); this.id = id; } @Override public String toString() { return "SysGroup [id=" + id + ", name=" + name + ", remark=" + remark + "]"; } }
5、Dao接口(SysGroupDao)
SysGroupDao.java
package cn.mg39.ssm.dao; import org.apache.ibatis.annotations.Mapper; import cn.mg39.ssm.entity.SysGroup; @Mapper public interface SysGroupDao { public Integer insert(SysGroup sysGroup); }
6、配置mapper.xml(SysGroupDaoMapper.xml)
01、在main/resources文件夹下新建文件夹mapper用于管理mapper文件
02、在mapper下写SysGroupDaoMapper.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="cn.mg39.ssm.dao.SysGroupDao"> <insert id="insert" keyColumn="id" keyProperty="id" parameterType="sysGroup"> insert into sys_group values(null,#{name},#{remark}) </insert> </mapper>
7、service接口(SysGroupService)
SysGroupService.java
package cn.mg39.ssm.service; import cn.mg39.ssm.entity.SysGroup; /** *service接口 */ public interface SysGroupService { public Boolean add(SysGroup sysGroup); }
8、service实现类(SysGroupServiceImpl)
SysGroupServiceImpl.java
package cn.mg39.ssm.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import cn.mg39.ssm.dao.SysGroupDao; import cn.mg39.ssm.entity.SysGroup; import cn.mg39.ssm.service.SysGroupService; //<bean id="sysGroupService" class="cn.mg39.ssm.service.impl.SysGroupService"> @Service("sysGroupService") //实现的功能和上面这句相同 public class SysGroupServiceImpl implements SysGroupService { @Autowired //自动注入 private SysGroupDao sysGroupDao; @Override public Boolean add(SysGroup sysGroup) { return sysGroupDao.insert(sysGroup) > 0; } }
9、编写controller类
SysGroupController.java
package cn.mg39.ssm.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import cn.mg39.ssm.entity.SysGroup; import cn.mg39.ssm.service.SysGroupService; @Controller public class SysGroupController { @Autowired //自动注入SysGroupService private SysGroupService sysGroupService; //浏览器地址栏端口后不写路径时显示index.html(前缀和后缀在application.yml中配置) @RequestMapping("/") public String index() { return "index"; //classpath:/templates/index.html } @RequestMapping("/addGroup") //index.html提交的数据传给addGroup,再判断跳转,跳转的网页原则和上面一样 public String addGroup(SysGroup sysGroup) { if (sysGroupService.add(sysGroup)) { return "success"; }else { return "fail"; } } }
10、在resources下编写application.yml文件
application.yml(用于配置数据库连接需要的参数和mybatis)
#spring的配置 application.yml #/templates/success.html spring: profiles: active: dev #和xml格式差不多,相当于单标签 thymeleaf: cache: false #开发时关闭缓存,不然没法看到实时页面 mode: LEGACYHTML5 #用非严格的 HTML encoding: UTF-8 servlet: content-type: text/html prefix: classpath:/templates/ #controller中return中值的前缀 suffix: .html #后缀 datasource: #下面为连接数据库的相关参数 url: jdbc:mysql://localhost:3306/hr_oa?characterEncoding=utf8&useSSL=false username: root password: root driver-class-name: com.mysql.jdbc.Driver mybatis: #myBatis的相关配置参数 type-aliases-package: cn.mg39.ssm.entity #扫描的包(忘记得差不多了) mapper-locations: classpath:mapper/*.xml #CRUD的配置文件(在mapper下)
11、编写HTML文件
在main/resources下新建templates文件夹(因为前缀为templates),在里面写HTML
index.html
input的name和实体对应的属性值相同
success.html
fail.html