企业分布式微服务云SpringCloud SpringBoot mybatis (二十一)构建restful API
2018-02-12 10:01
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引入依赖
在pom文件引入mybatis-spring-boot-starter的依赖: <dependency><groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter<artifactId>
<version>1.3.0</version>
</dependency>
引入数据库连接依赖:
<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>
引入数据源
application.properties配置文件中引入数据源:spring.datasource.url=jdbc:mysql://localhost:3306/testspring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
这样,springboot就可以访问数据了。
创建数据库表
建表语句:-- create table `account`# DROP TABLE `account` IF EXISTS
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');
dao层
@Mapper public interface AccountMapper { @Insert("insert into account(name, money) values(#{name}, #{money})") int add(@Param("name") String name, @Param("money") double money); @Update("update account set name = #{name}, money = #{money} where id = #{id}") int update(@Param("name") String name, @Param("money") double money, @Param("id") int id); @Delete("delete from account where id = #{id}") int delete(int id); @Select("select id, name as name, money as money from account where id = #{id}") Account findAccount(@Param("id") int id); @Select("select id, name as name, money as money from account") List<Account> findAccountList(); }
service层
@Service public class AccountService { @Autowired private AccountMapper accountMapper; public int add(String name, double money) { return accountMapper.add(name, money); } public int update(String name, double money, int id) { return accountMapper.update(name, money, id); } public int delete(int id) { return accountMapper.delete(id); } public Account findAccount(int id) { return accountMapper.findAccount(id); } public List<Account> findAccountList() { return accountMapper.findAccountList(); } }
controller层,构建restful API
package com.forezp.web; import com.forezp.entity.Account; import com.forezp.service.AccountService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import java.util.List; /** * Created by fangzhipeng on 2017/4/20. */ @RestController @RequestMapping("/account") public class AccountController { @Autowired AccountService 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.findAccount(id); } @RequestMapping(value = "/{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) { int t= accountService.update(name,money,id); if(t==1) { return "success"; }else { return "fail"; } } @RequestMapping(value = "/{id}", method = RequestMethod.DELETE) public String delete(@PathVariable(value = "id")int id) { int t= accountService.delete(id); if(t==1) { return "success"; }else { return "fail"; } } @RequestMapping(value = "", method = RequestMethod.POST) public String postAccount(@RequestParam(value = "name") String name, @RequestParam(value = "money") double money) { int t= accountService.add(name,money); if(t==1) { return "success"; }else { return "fail"; } } }
通过postman测试通过。
源码来源
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