java接口开发入门示例

最近在测试中发现mysql数据库保存测试用例，测试结果是一种不错的选择，为了后期方便在客户端展示测试，便写了个接口。此次接口开发不使用任何框架，需下载gson.jar，mysql-connector.jar，servlet-api.jar，以下为接口的开发思路

1.创建数据表，我这边使用的是mysql数据库

/*
SQLyog 企业版 - MySQL GUI v8.14 
MySQL - 5.5.49 : Database - test
*********************************************************************
*/


/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
CREATE DATABASE /*!32312 IF NOT EXISTS*/`test` /*!40100 DEFAULT CHARACTER SET utf8 */;

USE `test`;

/*Table structure for table `testcase` */

DROP TABLE IF EXISTS `testcase`;

CREATE TABLE `testcase` (
  `caseId` INT(11) NOT NULL AUTO_INCREMENT,
  `caseName` VARCHAR(255) CHARACTER SET latin1 NOT NULL,
  `caseDetail` VARCHAR(255) CHARACTER SET latin1 NOT NULL,
  `caseDevice` VARCHAR(255) CHARACTER SET latin1 NOT NULL,
  PRIMARY KEY (`caseId`)
) ENGINE=INNODB AUTO_INCREMENT=48 DEFAULT CHARSET=utf8 CHECKSUM=1 DELAY_KEY_WRITE=1 ROW_FORMAT=DYNAMIC;

/*Data for the table `testcase` */

INSERT  INTO `testcase`(`caseId`,`caseName`,`caseDetail`,`caseDevice`) VALUES (2,'2','233','444'),(16,'dsf','sf','sfd'),(17,'safd','sadf','asf'),(18,'saf','ggd','sdf'),(19,'dsaf','sdf','sdf'),(20,'sfd','sfd','(NfdsULL)'),(21,'sdf','v','v'),(22,'f','f','e'),(23,'w','r3','rt'),(24,'er','rtrt','sfad'),(25,'sf','sdf','fds'),(26,'sa','s','s'),(27,'e','e','e'),(28,'sa','rt','rt'),(29,'we','ew','qw'),(30,'we','(NULfL)','dsf'),(31,'fd','s','g'),(32,'s','g','f'),(33,'sf','f','f'),(34,'c','c','c'),(35,'e','e','e'),(36,'d','d','q'),(37,'q','e','r'),(38,'f','r','g'),(39,'g','(NULgL)','g'),(40,'gg','g','d'),(41,'f','f','f'),(42,'f','f','f'),(43,'f','f','f'),(44,'v','f','g'),(45,'e','e','r'),(46,'4','rt','fg'),(47,'dsf','ds','sdf');

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;

2.编写数据库工具类

package model;

import java.sql.*;

public class DBconn {
    static String url = "jdbc:mysql://localhost:3306/test?useunicuee=true& characterEncoding=utf8"; 
    static Strin