怎么运用springboot搭建并部署web项目
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所用工具
IntelliJ IDEA 2018.1.4
JDK 1.8
apache-tomcat-8.0.50
所解决的问题
1、如何用idea创建springboot项目
2、如何进行 服务器、数据库、mybatis、视图解析器的配置
3、如何使用mybatis generator 自动生成代码
4、如何使用multipart进行文件上传
5、如何运用springboot的事务
6、如何打包进行tomcat部署
运用idea创建springboot项目
1、打开IDEA,File -> New -> Project,选择Spring Initializr,然后next。
2、修改Ariifact,下面的Name、package会自动修改;Packaging有两种模式,一种是Jar,一种是War;因为springboot中自带了tomcat,因此可以将项目打成jar,直接运行;而我现有项目是部署到tomcat上,因此我需要打成war包;然后next。
3、设置项目依赖,然后next ,进入下一页 ,设置project name,点击finish完成。
4、进入项目
pom.xml
4.0.0 com.example springbootdemo 0.0.1-SNAPSHOT war springbootdemo Demo project for Spring Boot org.springframework.boot spring-boot-starter-parent 2.0.2.RELEASE UTF-8 UTF-8 1.8 org.springframework.boot spring-boot-starter-jdbc org.springframework.boot spring-boot-starter-web org.mybatis.spring.boot mybatis-spring-boot-starter 1.3.2 org.springframework.boot spring-boot-devtools runtime com.microsoft.sqlserver mssql-jdbc runtime org.springframework.boot spring-boot-starter-tomcat provided org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin
无配置文件的springmvc
通过两个例子:1、http请求访问并渲染页面 2、http请求返回json字符串
-配置数据源、视图渲染
-添加视图渲染pom依赖
-创建WelcomeController、welcome.jsp
新增之后的项目结构
application.yml 配置数据源 和 视图渲染
# 数据源、视图配置 spring: datasource: url: jdbc:sqlserver://xx:1433;DatabaseName=xx username: xx password: xx driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver mvc: view: prefix: /WEB-INF/views/ suffix: .jsp
pom.xml新增视图渲染依赖
org.apache.tomcat.embed tomcat-embed-jasper provided javax.servlet jstl
创建WelcomeController
package com.example.springbootdemo.web; import com.example.springbootdemo.entity.Welcome; import com.example.springbootdemo.response.Response; import com.example.springbootdemo.response.ResponseCode; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.servlet.ModelAndView; import java.util.ArrayList; import java.util.List; @Controller @RequestMapping("/welcome") public class WelcomeController { /** * 访问welcome.jsp页面 * @return */ @RequestMapping("welcomeIndex") public ModelAndView welcomeIndex(){ ModelAndView mv = new ModelAndView(); mv.setViewName("welcome"); mv.addObject("name","xx"); return mv; } /** * 返回json字符串 * @return */ @RequestMapping("getWelcomeInfo") @ResponseBody public Response getWelcomeInfo(){ /** * 测试数据 */ Listwelcomes = new ArrayList<>(); Welcome w1 = new Welcome(); w1.setId("1"); w1.setName("xx1"); w1.setAge(11); w1.setGender("女"); Welcome w2 = new Welcome(); w2.setId("2"); w2.setName("xx2"); w2.setAge(22); w2.setGender("男"); welcomes.add(w1); welcomes.add(w2); Response response = new Response(); response.setData(welcomes); response.setRetcode(ResponseCode.SUCCESS); response.setRetdesc("Success"); return response; } }
创建welcome.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>视图渲染 您好,${name}
启动项目,并访问
http://localhost:8080/welcome/getWelcomeInfo
http://localhost:8080/welcome/welcomeIndex
使用mybatis generator自动生成代码
用于为表创建 *Mapper.xml、model、dao文件
在pom.xml 添加mybatis generator 自动生成代码插件
org.springframework.boot spring-boot-maven-plugin org.mybatis.generator mybatis-generator-maven-plugin 1.3.2 ${basedir}/src/main/resources/generator/generatorConfig.xml true true
在上面pom.xml配置的pugin路径resources/generator 文件夹下添加generatorConfig.xml
使用maven中的mybatis-generator:generate根据数据库里面表生产相关的类
Edit Configurations -> 添加 -> Maven
配置mybatis
在application.yml 中添加mybatis的配置
# mybatis配置 mybatis: mapper-locations: classpath*:mybatis/*Mapper.xml type-aliases-package: com.example.springbootdemo.entity
在StudentBindingMapper.java中添加 @Repository("studentBindingMapper")注解才能使用@MapperScan扫描到
@Repository("studentBindingMapper") public interface StudentBindingMapper {}
在SpringbootdemoApplication.java添加@MapperScan
package com.example.springbootdemo; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @MapperScan("com.example.springbootdemo.mapper") public class SpringbootdemoApplication { public static void main(String[] args) { SpringApplication.run(SpringbootdemoApplication.class, args); } }
添加service、controller层
项目层级
添加StudentBindingService
package com.example.springbootdemo.service; import com.example.springbootdemo.entity.StudentBinding; import java.util.List; public interface StudentBindingService { int deleteByPrimaryKey(Long id); int insert(StudentBinding record); int insertSelective(StudentBinding record); StudentBinding selectByPrimaryKey(Long id); int updateByPrimaryKeySelective(StudentBinding record); int updateByPrimaryKey(StudentBinding record); void validTransaction(Long id); ListgetStudentBindByQuery(StudentBinding record); }
添加StudentBindingServiceImpl
package com.example.springbootdemo.service.impl; import com.example.springbootdemo.entity.StudentBinding; import com.example.springbootdemo.mapper.StudentBindingMapper; import com.example.springbootdemo.service.StudentBindingService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.List; @Service(value = "studentBindingService") public class StudentBindingServiceImpl implements StudentBindingService { @Autowired private StudentBindingMapper studentBindingMapper; @Override public int deleteByPrimaryKey(Long id) { return studentBindingMapper.deleteByPrimaryKey(id); } @Override public int insert(StudentBinding record) { return studentBindingMapper.insert(record); } @Override public int insertSelective(StudentBinding record) { return studentBindingMapper.insertSelective(record); } @Override public StudentBinding selectByPrimaryKey(Long id) { return studentBindingMapper.selectByPrimaryKey(id); } @Override public int updateByPrimaryKeySelective(StudentBinding record) { return studentBindingMapper.updateByPrimaryKeySelective(record); } @Override public int updateByPrimaryKey(StudentBinding record) { return studentBindingMapper.updateByPrimaryKey(record); } @Override @Transactional public void validTransaction(Long id){ // 删除之后,插入该id的数据 studentBindingMapper.deleteByPrimaryKey(id); StudentBinding record = new StudentBinding(); record.setId(id); studentBindingMapper.insertSelective(record); } @Override public ListgetStudentBindByQuery(StudentBinding record) { return studentBindingMapper.getStudentBindByQuery(record); } }
新增StudentBindingController
package com.example.springbootdemo.web; import com.example.springbootdemo.entity.StudentBinding; import com.example.springbootdemo.response.Response; import com.example.springbootdemo.response.ResponseCode; import com.example.springbootdemo.service.StudentBindingService; 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.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.ModelAndView; import java.io.File; import java.io.IOException; import java.util.List; @Controller @RequestMapping(value = "/studentBind") public class StudentBindingController { @Autowired private StudentBindingService studentBindingService; /** * 根据请求参数,删除绑定学生信息 * @param id * @return */ @RequestMapping("deleteByPrimaryKey") @ResponseBody public Response deleteByPrimaryKey(Long id){ Response response = new Response(); if(id==null){ response.setRetcode(ResponseCode.PARAMARTER_ERROR); response.setRetdesc("参数错误"); return response; } try{ studentBindingService.deleteByPrimaryKey(id); response.setRetcode(ResponseCode.SUCCESS); response.setRetdesc("删除成功"); }catch (Exception e){ e.printStackTrace(); response.setRetcode(ResponseCode.FAILED); response.setRetdesc("删除异常"); } return response; } /** * 根据请求参数,添加绑定学生信息 * @param record * @return */ @RequestMapping("insertSelective") @ResponseBody public Response insertSelective(StudentBinding record){ Response response = new Response(); if(record==null){ response.setRetcode(ResponseCode.PARAMARTER_ERROR); response.setRetdesc("参数错误"); return response; } try{ studentBindingService.insertSelective(record); response.setRetcode(ResponseCode.SUCCESS); response.setRetdesc("添加成功"); }catch (Exception e){ e.printStackTrace(); response.setRetcode(ResponseCode.FAILED); response.setRetdesc("添加异常"); } return response; } /** * 根据请求参数,查询绑定学生信息 * @param id * @return */ @RequestMapping("selectByPrimaryKey") @ResponseBody public Response selectByPrimaryKey(Long id){ Response response = new Response(); if(id==null){ response.setRetcode(ResponseCode.PARAMARTER_ERROR); response.setRetdesc("参数错误"); return response; } try{ StudentBinding studentBinding = studentBindingService.selectByPrimaryKey(id); response.setData(studentBinding); response.setRetcode(ResponseCode.SUCCESS); response.setRetdesc("查询成功"); }catch (Exception e){ e.printStackTrace(); response.setRetcode(ResponseCode.FAILED); response.setRetdesc("查询异常"); } return response; } /** * 验证@Transaction注解是否好用 * @param id * @return */ @RequestMapping("validTransaction") @ResponseBody public Response validTransaction(Long id){ Response response = new Response(); if(id==null){ response.setRetcode(ResponseCode.PARAMARTER_ERROR); response.setRetdesc("参数错误"); return response; } try{ studentBindingService.validTransaction(id); response.setRetcode(ResponseCode.SUCCESS); }catch (Exception e){ e.printStackTrace(); response.setRetcode(ResponseCode.FAILED); } return response; } /** * 渲染jsp页面 * @return */ @RequestMapping("welcomeIndex") public ModelAndView welcomeIndex(){ ListstudentBindings = studentBindingService.getStudentBindByQuery(new StudentBinding()); // model.addAttribute("studentBindings",studentBindings); ModelAndView mv = new ModelAndView(); mv.setViewName("welcome"); mv.addObject("studentBindings",studentBindings); return mv; } /** * 跳转到上传文件页面 * @return */ @RequestMapping("multipartIndex") public String multipartIndex(){ return "multipart-index"; } /** * 上传文件到指定目录 * @param file * @return */ @RequestMapping("/upload") @ResponseBody public Response upload(@RequestParam("file") MultipartFile file){ Response response = new Response(); if (file.isEmpty()){ response.setRetcode(ResponseCode.PARAMARTER_ERROR); response.setRetdesc("参数错误"); return response; } try { String filePath = "D:\\ceshi\\upload\\"; File dir = new File(filePath); if(!dir.isDirectory()){ dir.mkdir(); } String fileOriginalName = file.getOriginalFilename(); File writeFile = new File(filePath + fileOriginalName); //文件写入磁盘 file.transferTo(writeFile); response.setRetcode(ResponseCode.SUCCESS); response.setRetdesc("上传成功"); } catch (IOException e) { e.printStackTrace(); response.setRetcode(ResponseCode.FAILED); response.setRetdesc("上传失败"); } return response; } }
重启项目之后,就可以访问各个接口
springboot配置事务
springboot配置事务有两种方式
1、在SpringbootdemoApplication.java项目入口,添加@EnableTransactionManagement的注解用来开启事务
2、在service实现类上添加@Transactional注解,那么该类的所有方法都进行事务管理;也可以直接在service实现类的方法上直接添加@Transactional注解,那么只对该方法进行事务管理,上面代码中有对方法添加事务的例子
springboot打包进行tomcat部署
Edit Configuration -> Maven -> 添加 ->启动 -> 复制war包 -> tomcat webapp ->修改war包的名字 -> tomcat bin -> startup.bat
tomcat启动之后,访问 http://localhost:8080/springbootdemo/welcome/welcomeIndex 进行验证
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