先评价: 功能倒是不错,但是总觉得耽误时间
先引入pom依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency>
代码1
public class MongoUser implements Serializable{ private static final long serialVersionUID = 1L; @Id private String id; private String name; private String age; public String getId() { return id; } public void setId(String id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getAge() { return age; } public void setAge(String age) { this.age = age; } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; MongoUser user = (MongoUser) o; return Objects.equals(id, user.id) && Objects.equals(name, user.name) && Objects.equals(age, user.age); } @Override public int hashCode() { return Objects.hash(id, name, age); } }
代码2
@RunWith(SpringRunner.class) @SpringBootTest @Transactional public class ApplicationTests { @Autowired private RedisService redisService; @Autowired private UserDao userDao; @Autowired private JdbcTemplate jdbcTemplate; @Autowired private MongoTemplate mongoTemplate; @Test public void hello() { System.out.println("hello world"); redisService.setObjectJSON("test", "1"); System.out.println("使用了redisservice"); User user = userDao.find("id=?", 1l).first(); System.out.println("打印出了一个用户名"+user.userName); List<Map<String,Object>> queryForList = jdbcTemplate.queryForList("select id,user_name from c_user where id<2"); for (Map<String, Object> map : queryForList) { Object object = map.get("id"); System.out.println(object); Object object2 = map.get("user_name"); System.out.println(object2); } MongoUser mongoUser2 = new MongoUser(); mongoUser2.setId("1"); mongoUser2.setName("小明"); mongoTemplate.insert(mongoUser2); List<MongoUser> findAll = mongoTemplate.findAll(MongoUser.class); for (MongoUser mongoUser : findAll) { System.out.println("id="+mongoUser.getId()); System.out.println("id="+mongoUser.getName()); } } public static void main(String[] args) { HashMap<String,Object> hashMap = new HashMap<String, Object>(); hashMap.put("a", 1); hashMap.put("b", 2); Set<String> keySet = hashMap.keySet(); for (String string : keySet) { System.out.println(string); Object object = hashMap.get(string); System.out.println(object); System.out.println("================"); } } }
作者: 爱吃早餐的程序员
原文链接:https://blog.csdn.net/weixin_39076203/article/details/109206292#comments_13896896