SpringBoot JDBC/AOP

JDBC

工程結構：

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>boot-jdbc</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>boot-jdbc</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>


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

實體類：

package com.example.bootjdbc.domain;

import java.math.BigDecimal;
import java.util.Date;

public class Book {
    private Integer bookId;
    private String bookName;
    private String bookAuthor;
    private BigDecimal bookPrice;
    private Date bookDate;

    public Integer getBookId() {
        return bookId;
    }

    public void setBookId(Integer bookId) {
        this.bookId = bookId;
    }

    public String getBookName() {
        return bookName;
    }

    public void setBookName(String bookName) {
        this.bookName = bookName;
    }

    public String getBookAuthor() {
        return bookAuthor;
    }

    public void setBookAuthor(String bookAuthor) {
        this.bookAuthor = bookAuthor;
    }

    public BigDecimal getBookPrice() {
        return bookPrice;
    }

    public void setBookPrice(BigDecimal bookPrice) {
        this.bookPrice = bookPrice;
    }

    public Date getBookDate() {
        return bookDate;
    }

    public void setBookDate(Date bookDate) {
        this.bookDate = bookDate;
    }

    @Override
    public String toString() {
        return "Book{" +
                "bookId=" + bookId +
                ", bookName='" + bookName + '\'' +
                ", bookAuthor='" + bookAuthor + '\'' +
                ", bookPrice=" + bookPrice +
                ", bookDate=" + bookDate +
                '}';
    }
}

userDaoiml

package com.example.bootjdbc;

import com.example.bootjdbc.domain.Book;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Date;
import java.util.List;

@Repository
public class UserDaoImpl {
    @Autowired
    private JdbcTemplate jdbcTemplate;

    class BookRowMapper implements RowMapper<Book> {
        @Override
        public Book mapRow(ResultSet rs, int rowNum) throws SQLException {
            Book book = new Book();
            book.setBookAuthor(rs.getString("book_author"));
            book.setBookDate(new Date(rs.getDate("book_date").getTime()));
            book.setBookId(rs.getInt("book_id"));
            book.setBookName(rs.getString("book_name"));
            book.setBookPrice(rs.getBigDecimal("book_price"));
            return book;
        }
    }

    public void add() {
        String sql = "INSERT INTO `testdb`.`t_book`(`book_name`, `book_author`, `book_price`, `book_date`) VALUES ('222', '333', 444, '2018-07-11');\n";
        jdbcTemplate.execute(sql);
    }

    public Book selectOne() {
        String sql = "select * from t_book where book_id=?";
        Book book = jdbcTemplate.queryForObject(sql, new BookRowMapper(), 2);

        return book;
    }

    public List<Book> selectList() {
        String sql = "select * from t_book";
        return jdbcTemplate.query(sql,new BookRowMapper());
    }

    public void update() {
        String sql = "UPDATE `testdb`.`t_book` SET `book_name` = '333', `book_author` = '555', `book_price` = 444, `book_date` = '2018-07-11' WHERE `book_id` = 2;\n";
        jdbcTemplate.update(sql);
    }

    public void delete() {
        String sql = "delete from t_book where book_id=?";
        jdbcTemplate.update(sql,3);
    }
}

測試類：

package com.example.bootjdbc;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.jdbc.core.JdbcTemplate;

import javax.sql.DataSource;

@SpringBootApplication
public class BootJdbcApplication {

    public static void main(String[] args) throws Exception {
        ConfigurableApplicationContext
                context = SpringApplication.run(BootJdbcApplication.class, args);
        System.out.println(context.getBean(DataSource.class).getClass());
        DataSource dataSource = context.getBean(DataSource.class);
        System.out.println(dataSource.getConnection().getCatalog());
        System.out.println(context.getBean(JdbcTemplate.class));
        System.out.println("--------------------------");
        UserDaoImpl userDao = context.getBean(UserDaoImpl.class);
        System.out.println(userDao.selectOne());
        context.close();
    }
}

application.properties（默認配置HikariCP鏈接池）

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql:///testdb?useSSL=true
spring.datasource.username=root
spring.datasource.password=123
# 經過type指定鏈接池類型
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

 

AOP

工程結構：

pom

<?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>boot-aop</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>boot-aop</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.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-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </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>

application.properties

#spring.aop.auto = true
##默認爲false，根據有無接口來選擇使用的代理方式，若是設置爲true表明強制使用cglib代理方式
##spring.aop.proxy-target-class=true

接口

package com.example.bootaop.dao;

public interface BookDao {
    void addBook(String name, String author);
}

package com.example.bootaop.dao;

import org.springframework.stereotype.Repository;

@Repository
public class BookDaoImpl implements BookDao {

    @Override
    public void addBook(String name, String author) {
        System.out.println("bookName:"+name+", bookAuthor:"+author);
    }
}

package com.example.bootaop.dao;

import org.springframework.stereotype.Repository;

@Repository
public class BookDaoImpl1 implements BookDao {
    @Override
    public void addBook(String name, String author) {

    }
}

切入類

package com.example.bootaop.aop;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

import java.util.Arrays;

@Component
@Aspect
public class BookAop {
    // 定義切入點
    public static final String POINT_CUT = "execution(* com.example.bootaop.dao..*.*(..))";

    @Before(POINT_CUT)
    public void before() {
        System.out.println("添加圖書方法校驗前.....");
    }

    @After(POINT_CUT)
    public void after(JoinPoint jp) {
        /// System.out.println(AopContext.currentProxy());
        System.out.println(jp.getTarget().getClass());
        System.out.println(Arrays.asList(jp.getArgs()));
        System.out.println("添加圖書成功後.....");
    }
}

測試類：

package com.example.bootaop;

import com.example.bootaop.dao.BookDao;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.EnableAspectJAutoProxy;

@SpringBootApplication
@EnableAspectJAutoProxy(proxyTargetClass = false, exposeProxy = false)
public class BootAopApplication {

    public static void main(String[] args) {
        ConfigurableApplicationContext
                context = SpringApplication.run(BootAopApplication.class, args);
        /*BookDaoImpl bookDao = context.getBean(BookDaoImpl.class);
        System.out.println(bookDao.getClass());
        bookDao.addBook("三國演義", "羅貫中");*/
        BookDao bookDao = context.getBean("bookDaoImpl1",BookDao.class);
        System.out.println(bookDao.getClass());
        bookDao.addBook("三國演義", "羅貫中");
        context.close();
    }
}