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03-springboot使用JdbcTemplate访问MyS

03-springboot使用JdbcTemplate访问MyS

作者: stellarxiong | 来源:发表于2017-12-27 19:46 被阅读0次

    通过jdbc访问关系型mysql,通过spring的JdbcTemplate去访问。

    创建表格

    CREATE TABLE `account` (
      `id` int(11) NOT NULL AUTO_INCREMENT,
      `name` varchar(20) NOT NULL,
      `money` double DEFAULT NULL,
      PRIMARY KEY (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
    INSERT INTO `account` VALUES ('1', 'aaa', '1000');
    INSERT INTO `account` VALUES ('2', 'bbb', '1000');
    INSERT INTO `account` VALUES ('3', 'ccc', '1000');
    

    创建工程

    pom文件中依赖如下:

        <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>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>1.0.29</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    

    添加配置

    application.properties内容如下:

    spring.datasource.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.url=jdbc:mysql://localhost:3306/test
    spring.datasource.username=root
    spring.datasource.password=root
    

    具体编码

    实体类

    public class Account {
        private int id ;
        private String name ;
        private double money;
    
        public int getId() {
            return id;
        }
    
        public void setId(int id) {
            this.id = id;
        }
    
        public String getName() {
            return name;
        }
    
        public void setName(String name) {
            this.name = name;
        }
    
        public double getMoney() {
            return money;
        }
    
        public void setMoney(double money) {
            this.money = money;
        }
    }
    

    DAO

    public interface IAccountDAO {
        int add(Account account);
    
        int update(Account account);
    
        int delete(int id);
    
        Account findAccountById(int id);
    
        List<Account> findAccountList();
    }
    
    @Repository
    public class AccountDaoImpl implements IAccountDAO {
        @Autowired
        private JdbcTemplate jdbcTemplate;
    
        @Override
        public int add(Account account) {
            return this.jdbcTemplate.update("insert into account(name, money) values(?, ?)",account.getName(),account.getMoney());
        }
    
        @Override
        public int update(Account account) {
            return jdbcTemplate.update("UPDATE  account SET NAME=? ,money=? WHERE id=?",
                    account.getName(),account.getMoney(),account.getId());
        }
    
        @Override
        public int delete(int id) {
            return jdbcTemplate.update("DELETE from TABLE account where id=?",id);
        }
    
        @Override
        public Account findAccountById(int id) {
            List<Account> list = jdbcTemplate.query("select * from account where id = ?", new Object[]{id}, new BeanPropertyRowMapper(Account.class));
            if(list!=null && list.size()>0){
                Account account = list.get(0);
                return account;
            }else{
                return null;
            }
        }
    
        @Override
        public List<Account> findAccountList() {
            List<Account> list = jdbcTemplate.query("select * from account", new Object[]{}, new BeanPropertyRowMapper(Account.class));
            if(list!=null && list.size()>0){
                return list;
            }else{
                return null;
            }
        }
    }
    

    service

    public interface IAccountService {
    
    
        int add(Account account);
    
        int update(Account account);
    
        int delete(int id);
    
        Account findAccountById(int id);
    
        List<Account> findAccountList();
    
    }
    
    @Service
    public class AccountService implements IAccountService {
        @Autowired
        IAccountDAO accountDAO;
        @Override
        public int add(Account account) {
            return accountDAO.add(account);
        }
    
        @Override
        public int update(Account account) {
            return accountDAO.update(account);
        }
    
        @Override
        public int delete(int id) {
            return accountDAO.delete(id);
        }
    
        @Override
        public Account findAccountById(int id) {
            return accountDAO.findAccountById(id);
        }
    
        @Override
        public List<Account> findAccountList() {
            return accountDAO.findAccountList();
        }
    }
    

    controller

    @RestController
    @RequestMapping("/account")
    public class AccountController {
    
        @Autowired
        IAccountService accountService;
    
        @RequestMapping(value = "/list",method = RequestMethod.GET)
        public List<Account> getAccounts(){
           return accountService.findAccountList();
        }
    
        @RequestMapping(value = "/{id}",method = RequestMethod.GET)
        public  Account getAccountById(@PathVariable("id") int id){
            return accountService.findAccountById(id);
        }
    
        @RequestMapping(value = "update/{id}",method = RequestMethod.PUT)
        public  String updateAccount(@PathVariable("id")int id , @RequestParam(value = "name",required = true)String name,
        @RequestParam(value = "money" ,required = true)double money){
            Account account=new Account();
            account.setMoney(money);
            account.setName(name);
            account.setId(id);
            int t=accountService.update(account);
            if(t==1){
                return account.toString();
            }else {
                return "fail";
            }
        }
    
        @RequestMapping(value = "add",method = RequestMethod.POST)
        public  String postAccount( @RequestParam(value = "name")String name,
                                     @RequestParam(value = "money" )double money){
            Account account=new Account();
            account.setMoney(money);
            account.setName(name);
            int t= accountService.add(account);
            if(t==1){
                return account.toString();
            }else {
                return "fail";
            }
    
        }
    
    }
    

    来源:http://blog.csdn.net/forezp/article/details/70477821

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