运用springboot搭建并部署web项目的示例

前言

一直以来都是用springmvc+mybatis进行后端接口开发工作，最近闲来无事，根据现有功能需求，用springboot+mybatis部署一套简单的web项目。

所用工具

1. IntelliJ IDEA 2018.1.4
2. JDK 1.8
3. 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

<?xml version="1.0" encoding="UTF-8"?><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/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.example</groupId>  <artifactId>springbootdemo</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>war</packaging>  <name>springbootdemo</name>  <description>Demo project for Spring Boot</description>  <parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>2.0.2.RELEASE</version>    <relativePath/> <!-- lookup parent from repository -->  </parent>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>    <java.version>1.8</java.version>  </properties>  <dependencies>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-jdbc</artifactId>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-web</artifactId>    </dependency>    <dependency>      <groupId>org.mybatis.spring.boot</groupId>      <artifactId>mybatis-spring-boot-starter</artifactId>      <version>1.3.2</version>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-devtools</artifactId>      <scope>runtime</scope>    </dependency>    <dependency>      <groupId>com.microsoft.sqlserver</groupId>      <artifactId>mssql-jdbc</artifactId>      <scope>runtime</scope>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-tomcat</artifactId>      <scope>provided</scope>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-test</artifactId>      <scope>test</scope>    </dependency>  </dependencies>  <build>    <plugins>      <plugin>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-maven-plugin</artifactId>      </plugin>    </plugins>  </build></project>

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

<!-- 使用 jsp 必要依赖 -->    <dependency>      <groupId>org.apache.tomcat.embed</groupId>      <artifactId>tomcat-embed-jasper</artifactId>      <scope>provided</scope>    </dependency>    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>jstl</artifactId>    </dependency>

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     */    List<Welcome> welcomes = 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" %><html><head>  <title>视图渲染</title></head><body>  您好，${name}</body></html>

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

<build>    <plugins>      <plugin>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-maven-plugin</artifactId>      </plugin>      <!-- mybatis generator 自动生成代码插件 -->      <plugin>        <groupId>org.mybatis.generator</groupId>        <artifactId>mybatis-generator-maven-plugin</artifactId>        <version>1.3.2</version>        <configuration>          <configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>          <overwrite>true</overwrite>          <verbose>true</verbose>        </configuration>      </plugin>    </plugins>  </build>

在上面pom.xml配置的pugin路径resources/generator 文件夹下添加generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE generatorConfiguration    PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"    "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"><generatorConfiguration>  <!-- 数据库驱动:选择你的本地硬盘上面的数据库驱动包-->  <classPathEntry location="C:/Users/.m2/repository/com/microsoft/sqlserver/mssql-jdbc/6.2.2.jre8/mssql-jdbc-6.2.2.jre8.jar"/>  <context id="DB2Tables" targetRuntime="MyBatis3">    <commentGenerator>      <property name="suppressDate" value="true"/>      <!-- 是否去除自动生成的注释 true：是 ： false:否 -->      <property name="suppressAllComments" value="true"/>    </commentGenerator>    <!--数据库链接URL，用户名、密码 -->    <jdbcConnection driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver" connectionURL="jdbc:sqlserver://xx:1433;DatabaseName=xx" userId="xx" password="xx">    </jdbcConnection>    <javaTypeResolver>      <property name="forceBigDecimals" value="false"/>    </javaTypeResolver>    <!-- 生成模型的包名和位置-->    <javaModelGenerator targetPackage="com.example.springbootdemo.entity" targetProject="src/main/java">      <property name="enableSubPackages" value="true"/>      <property name="trimStrings" value="true"/>    </javaModelGenerator>    <!-- 生成映射文件的包名和位置-->    <sqlMapGenerator targetPackage="mybatis" targetProject="src/main/resources">      <property name="enableSubPackages" value="true"/>    </sqlMapGenerator>    <!-- 生成DAO的包名和位置-->    <javaClientGenerator type="XMLMAPPER" targetPackage="com.example.springbootdemo.mapper" targetProject="src/main/java">      <property name="enableSubPackages" value="true"/>    </javaClientGenerator>    <!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->    <table tableName="xx" domainObjectName="StudentBinding" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>  </context></generatorConfiguration>

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);  List<StudentBinding> getStudentBindByQuery(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 List<StudentBinding> getStudentBindByQuery(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(){    List<StudentBinding> studentBindings = 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

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武林网。