SpringBoot整合mybatis和SpringMVC的使用

SpringBoot不是什么新的框架可以认为是Spring的精简版,通俗的说它将平常的配置文件信息封装好打成jar包,节省时间,

一般我们搭建框架需要拷贝好多配置文件,使用SpringBoot之后你就发现真简洁。

点击进入我码云上的项目 或者直接进入https://gitee.com/it_qin/DemoSpringBoot.git

这是MAVEN项目,不是用MAVEN进行管理的可以

将pom.xml中配置的jar在网上搜索下载加来附加到你的项目中将我项目中的类文件、

配置文件拷贝到你项目就OK了。

项目结构



application.properties

spring.datasource.url=jdbc:mysql://localhost/dapeng?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&autoReconnect=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
#有配置文件需要扫描mybatis映射文件
#mybatis.mapper-locations=classpath:/mapper/*Mapper.xml

mybatis.type-aliases-package=com.example.myproject.domain

#config-location: classpath:mybatis/mybatis-config.xml
#springmvc视图的配置 现在以java类的形式配置了[SpringMvcConfig类]。
#spring.mvc.view.prefix=/WEB-INF/
#spring.mvc.view.suffix=.jsp

SpringMvcConfig

package com.example.myproject.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

/**
* <p>
*     继承WebMvcConfigurerAdapter类可重写springboot中的默认配置。
*
* </p>[2018/2/7]
*
* @author HongKun.Qin
*/
@Configuration
public class SpringMvcConfig extends WebMvcConfigurerAdapter {

@Override
public void configureViewResolvers(ViewResolverRegistry registry) {
System.out.print("spring-mvc");
registry.jsp("/WEB-INF/", ".jsp");
}

}

HelloWorldController

package com.example.myproject.controller;

import com.example.myproject.domain.User;
import com.example.myproject.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

/**
* <p>如果返回的类型不是ModelAndView,则[@RestController注解相当于@ResponseBody ＋ @Controller合在一起的作用。]</p>[2018/2/6]
*
* @author HongKun.Qin
*/
@RestController
public class HelloWorldController {
@Autowired
private UserService userService;

/**
* <h4>功能：[跳转index1界面 ][2018/2/7 13:40][创建人: HongKun.Qin]</h4>
* <h4></h4>
*
* @param * @param null :
* @return
*/
@RequestMapping("/index")
public ModelAndView index() {

ModelAndView mav = new ModelAndView();

mav.setViewName("index1");

return mav;
}

/**
* <h4>功能：[ 返回json格式][2018/2/7 13:42][创建人: HongKun.Qin]</h4>
* <h4></h4>
*
* @param * @param null :
* @return
*/
@RequestMapping("/json")
public String indexJson() {

List<User> users = userService.getUserList();

users.forEach(value ->
System.out.println(String.format("学员信息 %s,%s", value.getUser_id(), value.getUserAccount()))
);//需要jdk1.8才可以使用这种方式。

return "hello";
}

/**
* <h4>功能：[跳转index2界面 ][2018/2/7 13:40][创建人: HongKun.Qin]</h4>
* <h4>加这个的目的是 如果同时存在index.jsp和index.ftl会默认跳转index.ftl</h4>
*
* @param * @param null :
* @return
*/
@RequestMapping("/index2")
public ModelAndView index2() {

ModelAndView mav = new ModelAndView();

mav.setViewName("index");

return mav;
}
}

UserDaoMapper

package com.example.myproject.dao;

import com.example.myproject.domain.User;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
* <p>使用的是无配置注解形式,配置文件形式在application.properties中配置扫描就可以 已经注释掉。</p>[2018/2/6]
*
* @author HongKun.Qin
*/
public interface UserDaoMapper {
@Select("select * from user where userAccount = '18888320271'")
List<User> selectUserList();
}

User

package com.example.myproject.domain;

/**
* <p></p>[2018/2/6]
*
* @author HongKun.Qin
*/
public class User {
private String user_id;
private String userAccount;

public String getUser_id() {
return user_id;
}

public void setUser_id(String user_id) {
this.user_id = user_id;
}

public String getUserAccount() {
return userAccount;
}

public void setUserAccount(String userAccount) {
this.userAccount = userAccount;
}

}

UserService

package com.example.myproject.service;

import com.example.myproject.domain.User;

import java.util.List;

/**
* <p></p>[2018/2/6]
*
* @author HongKun.Qin
*/
public interface UserService {
List<User> getUserList();
}

UserServiceImpl

package com.example.myproject.service.impl;

import com.example.myproject.dao.UserDaoMapper;
import com.example.myproject.domain.User;
import com.example.myproject.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
* <p>1</p>[2018/2/6]
*
* @author HongKun.Qin
*/
@Service
public class UserServiceImpl implements UserService {
@Autowired
UserDaoMapper userDaoMapper;//使用idea打开后这会报错,不用管正常使用。

@Override
public List<User> getUserList() {
return userDaoMapper.selectUserList();
}
}

DemoApplication

package com.example;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;

/**
* 需要注意的是这个类要放在所有类的上级,因为程序运行之后初始化这个类下面的所有包。
*/
@SpringBootApplication
@MapperScan("com.example.myproject.dao")//扫描dao层接口
public class DemoApplication{
/*运行这个方法就能启动服务了。*/
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}

index.ftl

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>界面</title>
<#--<link rel="stylesheet" type="text/css" href="index.css" />-->
<#--<script type="text/javascript"> </script>-->
</head>
<body>
<div>
spring-mvc和spring-boot整合测试。 ftl
</div>
<#--<script type="text/javascript"> </script>-->
</body>

</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" %>

<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
if (path.equals("/")) {
path = "";
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<%--<link rel="stylesheet" type="text/css" href="<%=path%>/.css">--%>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1">
<%--<script type="text/javascript" ></script>--%>
<title></title>
</head>
<body>
<h3>spring-mvc和spring-boot整合测试。 jsp</h3>
<%--<script type="text/javascript" ></script>--%>
</body>
</html>

index1.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" %>

<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
if (path.equals("/")) {
path = "";
}
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<%--<link rel="stylesheet" type="text/css" href="<%=path%>/.css">--%>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1">
<%--<script type="text/javascript" ></script>--%>
<title></title>
</head>
<body>
<h3>spring-mvc和spring-boot整合测试。 jsp</h3>
<%--<script type="text/javascript" ></script>--%>
</body>
</html>

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>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>demo</name>
<description>Demo project for Spring Boot</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.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>
<!--spring-boot-starter ：核心模块，包括自动配置支持、日志和YAML；-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!--spring-boot-starter-test ：测试模块，包括JUnit、Hamcrest、Mockito。-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--pom.xml中添加支持web的模块-->
<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>1.1.1</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.21</version>
</dependency>

<!-- tomcat 的支持.[不加jsp界面无法解析]-->

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-tomcat</artifactId>

<!-- <scope>provided</scope>-->

</dependency>

<dependency>

<groupId>org.apache.tomcat.embed</groupId>

<artifactId>tomcat-embed-jasper</artifactId>

<!-- <scope>provided</scope>-->

</dependency>
<!-- ftl文件需要导入的jar -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>

</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>

</project>

mysql运行文件

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`user_id` varchar(32) NOT NULL,
`userAccount` varchar(13) DEFAULT NULL,
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('ewkdrjde', '18888800000');
INSERT INTO `user` VALUES ('jadsfe25', '18888888888');
INSERT INTO `user` VALUES ('jserda32', '18888320271');

“`

有什么不明白的可以再下方进行评论,大家一起进步。