Spingboot+Mybatis+Oracle項目配置

配置過程參考：

項目創建：http://how2j.cn/k/springboot/springboot-eclipse/1640.html

集成Mybatis使用Oracle：https://www.cnblogs.com/pangkang/p/8296666.html

1、創建MAVEN項目

1-1、菜單 -> File -> New -> Other -> Maven -> Maven -> Maven Project -> New Maven Project

      groupId: com.公司名

      artifactId: 項目名

      name: 項目名

      description: 項目名

1-2、配置pom.xml（這里附上本次項目完整的pom.xml）

注1：https://mvnrepository.com/ 下可查找需要的依賴

注2：倉庫未提供ojdbc下載，自行下載ojdbc6.jar(https://www.oracle.com/technetwork/database/enterprise-edition/jdbc-112010-090769.html)。

進入ojdbc6.jar所在目錄，cmd執行mvn install:install-file -DgroupId=com.oracle -DartifactId=ojdbc6 -Dversion=下載的版本號 -Dpackaging=jar -Dfile=ojdbc6.jar

（參考http://www.cnblogs.com/pangkang/p/8250014.html）

注3：經指教下面這一段可自動下載ojdbc：<dependency><groupId>com.oracle</groupId><artifactId>ojdbc6</artifactId><version>11.2.0.3</version></dependency>

注4：若不使用數據庫連接，要去掉Mybatis的依賴

<?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.hello</groupId>
    <artifactId>springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot</name>
    <description>springboot</description>
    <packaging>war</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>

        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <scope>test</scope>
        </dependency>
        
        <!-- servlet依賴. -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        
        <!-- tomcat的支持. -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
        </dependency>
        
        <!-- 支持熱部署 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional> <!-- 這個需要為 true 熱部署才有效 -->
        </dependency>
        
        <!-- Swagger2依賴 -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.6.1</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.6.1</version>
        </dependency>
        
        <!-- Mybatis -->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.1.1</version>
        </dependency>
        
        <!-- oracle -->
        <dependency>
            <groupId>com.oracle</groupId>
            <artifactId>ojdbc6</artifactId>
            <version>11.2.0.4.0</version>
        </dependency>        
    </dependencies>

    <properties>
        <java.version>1.8</java.version>
    </properties>

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

</project>

1-3、創建包並創建Application.java主方法

運行這個方法就會啟動tomcat,默認端口是8080

package com.hello.springboot;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import springfox.documentation.swagger2.annotations.EnableSwagger2;

@SpringBootApplication // 表示這是一個SpringBoot應用
@EnableSwagger2 // 配置掃描mapper
@MapperScan("com.hello.springboot.Dao") // 配置掃描mapper 修改項目后注意檢查掃描地址
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

1-4、創建控制器包並創建控制器類

package com.hello.springboot.controller;

import java.util.ArrayList;

import javax.annotation.Resource;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.hello.springboot.Entyties.HelloEntity;
import com.hello.springboot.Service.ControllerService;

@RestController
public class HelloController {
    @Resource
    private ControllerService service;

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    // @ResponseBody：以JSON格式返回到前端
    @ResponseBody
    public ArrayList<HelloEntity> GetHelloEntities() {
        return service.GetHelloEntities();// 訪問數據庫查詢內容到前端
    }
}

2、集成使用Mybatis、Oracle

2-1、在src/main/resources 目錄下增加 application.properties文件。用於視圖重定向jsp文件的位置，配置數據庫地址及賬號密碼，指定sql語句位置

spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp

spring.datasource.url = jdbc:oracle:thin:@HOST:POST:數據庫名
spring.datasource.username = admin
spring.datasource.password = 123456

spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver

mybatis.mapperLocations=classpath:mapper/*.xml

2-2、創建Service包並創建Service類

package com.hello.springboot.Service;

import java.util.ArrayList;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.hello.springboot.Dao.HelloDao;
import com.hello.springboot.Entyties.HelloEntity;

@Service
public class ControllerService {
    @Autowired
    private HelloDao dao;

    public ArrayList<HelloEntity> GetHelloEntities() {
        return dao.GetHello();
    }
}

2-3、創建Dao包並創建Dao類

package com.hello.springboot.Dao;

import java.util.ArrayList;

import com.hello.springboot.Entyties.HelloEntity;

public interface HelloDao {
    public ArrayList<HelloEntity> GetHello();
}

2-4、創建Entyties包並創建Entyties類

package com.hello.springboot.Entyties;

import java.io.Serializable;

public class HelloEntity implements Serializable {
    private static final long serialVersionUID = -6556793741331167103L;
    private String str;

    public String getstr() {
        return str;
    }

    public void setstr(String str) {
        this.str = str;
    }

}

2-5、在src/main/resources下創建mapper，mapper下創建sql.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="com.hello.spring.Dao.HelloDao">

<!-- 修改項目后，注意檢查namespace、resultType -->

    <select id="GetHello" resultType="com.hello.spring.Entyties.HelloEntity">
        SELECT 'Hello Spingboot' str FROM dual 
    </select>
</mapper>