环境
spring boot : 2.0.3
spring data : 2.0.8
配置
- 使用@EnableMongoRepositories 注解
需要在一个@Configuration 类上, 且需要确定该类所在的包包含repository定义所在的包。
@Configuration
@EnableMongoRepositories
public class WeaselWebMVCConfig implements WebMvcConfigurer{
@Bean
public LogInterceptor getLogInterceptor() {
return new LogInterceptor();
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(getLogInterceptor());
WebMvcConfigurer.super.addInterceptors(registry);
}
}
注意: 当使用该注解时如何获取 MongoTemplate引用,
注意到该注解包含一个 模板引用:
/**
* Configures the name of the {@link MongoTemplate} bean to be used with the repositories detected.
*
* @return
*/
String mongoTemplateRef() default "mongoTemplate";
因此,可以在代码中直接装配使用之, 如下测试代码:
@Autowired
private MongoTemplate mongoTemplate;
@Test
public void test4MongoTemplategen() {
System.out.println("获取 MongoTemplate 引用。");
System.out.println(this.mongoTemplate.toString());
}
- Application 类
@SpringBootApplication
public class WeaselApplication {
public static void main(String[] args) {
// TODO Auto-generated method stub
SpringApplication.run(WeaselApplication.class, args);
}
}
创建domain
package com.dus.weasel.domain;
import java.util.Arrays;
import java.util.Date;
import java.util.concurrent.atomic.AtomicLong;
public class UserInfo {
//客户id、 客户名称、客户昵称、邮件地址、密码、注册时间、头像、上次登录时间、登录次数
private Long userId;
private String userName;
private String nickName;
private String email;
private String pwd;
private Date regTime;
private byte[] headImage;
private Date lastLoginTime;
private AtomicLong loginCount;
@Override
public String toString() {
return "UserInfo [userId=" + userId + ", userName=" + userName + ", nickName=" + nickName + ", email=" + email
+ ", pwd=" + pwd + ", regTime=" + regTime + ", headImage=" + Arrays.toString(headImage)
+ ", lastLoginTime=" + lastLoginTime + ", loginCount=" + loginCount + "]";
}
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getNickName() {
return nickName;
}
public void setNickName(String nickName) {
this.nickName = nickName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public Date getRegTime() {
return regTime;
}
public void setRegTime(Date regTime) {
this.regTime = regTime;
}
public byte[] getHeadImage() {
return headImage;
}
public void setHeadImage(byte[] headImage) {
this.headImage = headImage;
}
public Date getLastLoginTime() {
return lastLoginTime;
}
public void setLastLoginTime(Date lastLoginTime) {
this.lastLoginTime = lastLoginTime;
}
public AtomicLong getLoginCount() {
return loginCount;
}
public void setLoginCount(AtomicLong loginCount) {
this.loginCount = loginCount;
}
}
创建 repository
package com.dus.weasel.repository;
import org.springframework.data.mongodb.repository.MongoRepository;
import com.dus.weasel.domain.UserInfo;
public interface UserInfoRepository extends MongoRepository<UserInfo, Long>{
}
测试
package com.dus.repository.test;
import java.util.Date;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicLong;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.domain.Example;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.dus.weasel.WeaselApplication;
import com.dus.weasel.domain.UserInfo;
import com.dus.weasel.repository.UserInfoRepository;
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes=WeaselApplication.class)// 指定spring-boot的启动类
public class UserInfoRepositoyTests {
@Autowired
private UserInfoRepository repo;
@Test
public void testsave() {
UserInfo user = new UserInfo();
user.setUserName("username");
user.setUserId(1l);
user.setEmail("www@163.com.cn");
user.setLastLoginTime(new Date());
user.setNickName("nick");
user.setRegTime(new Date());
user.setPwd("1234");
user.setLoginCount(new AtomicLong(0));
user.setHeadImage("This is an image for head show! ".getBytes());
System.out.println(user.toString());
UserInfo resuser = repo.insert(user);
System.out.println("after insert:");
System.out.println(resuser.toString());
}
@Test
public void testfind() {
long count = repo.count();
System.out.println("Current db userinfo counts=" + count);
UserInfo q = new UserInfo();
q.setNickName("Nick");
Example<UserInfo> exa = Example.of(q);
Optional<UserInfo> user = repo.findOne(exa);
if (user.isPresent()) {
System.out.println("get Result:" + user.get().toString());
} else {
System.out.println("Not Result");
}
Optional<UserInfo> ru = repo.findById(1l);
if (ru.isPresent()) {
System.out.println("findById get Result:" + ru.get().toString());
} else {
System.out.println("findById Not Result");
}
// 分页
Page<UserInfo> pu = repo.findAll(PageRequest.of(0, 1));
System.out.println("分页查询!");
System.out.println(pu.getTotalElements());
System.out.println(pu.getTotalPages());
System.out.println(pu.getSize());
System.out.println(pu.getNumber());
System.out.println(pu.getNumberOfElements());
List<UserInfo> luser = pu.getContent();
System.out.println("list size :" + luser.size());
System.out.println(luser.get(0).toString());
}
}
- 注入 UserInfoRepository repo;
- 插入 使用 UserInfo resuser = repo.insert(user);
插入后库里的数据:
{ "_id" : ObjectId("5b4da0882e0694540c89394e"), "userId" : NumberLong(1), "userName" : "username", "nickName" : "nick", "email" : "www@163.com.cn", "pwd" : "1234", "regTime" : ISODate("2018-07-17T07:53:44.661Z"), "headImage" : BinData(0,"VGhpcyBpcyBhbiBpbWFnZSBmb3IgaGVhZCBzaG93ISA="), "lastLoginTime" : ISODate("2018-07-17T07:53:44.661Z"), "loginCount" : NumberLong(0), "_class" : "com.dus.weasel.domain.UserInfo" }
注意: 这里没有映射id , 而是使用了传入的id 。
若用使用mongdb的id, 则需要:
在domain的类上添加Id注解 :
@Id
private Long userId;
插入数据库的数据中没有了userId , 而是_id . 但这个Id不会自动生成,输入传入。
-
查询
使用Example的查询 。 -
根据id的查询
-
分页查询
自定义repository 方法 (通过方法名)
在 UserInfoRepository 添加如下方法:
public interface UserInfoRepository extends MongoRepository<UserInfo, Long>{
List<UserInfo> findByNickNameAndEmail(String nickname, String email);
List<UserInfo> findByNickNameOrEmail(String nickname, String email);
Optional<List<UserInfo>> findByLoginCount(Long count);
}
测试 :
@Test
public void test4CustomQueryMethodName() {
List<UserInfo> lu = repo.findByNickNameAndEmail("nick", "www@163.com.cn");
if (lu == null || lu.isEmpty()) {
System.out.println("查询结果为空!");
} else {
System.out.println(lu.size());
for ( UserInfo u : lu) {
System.out.println(u.toString());
}
}
}
测试
@Test
public void test4CustomQueryMethodName2() {
List<UserInfo> lu = repo.findByNickNameOrEmail("nick", "www@163.com.2222cn");
if (lu == null || lu.isEmpty()) {
System.out.println("查询结果为空!");
} else {
System.out.println(lu.size());
for ( UserInfo u : lu) {
System.out.println(u.toString());
}
}
}
测试
@Test
public void test4CustomQueryMethodNameOptinal() {
Optional<List<UserInfo>> lu = repo.findByLoginCount(3l);
if (!lu.isPresent()) {
System.out.println("查询结果为空!");
} else {
List<UserInfo> ll = lu.get();
System.out.println("jieguo:" + ll.size());
for ( UserInfo u : ll) {
System.out.println(u.toString());
}
}
}
从测试结果看 , 即时查询为空 , Optional<List<UserInfo>> lu = repo.findByLoginCount(3l); , 也会返回一个空list对象 , 因此使用Optional意义不大。
自定义repository 方法 (自定义查询代码 )
- 创建接口
特别注意: 接口和实现类的命名要完全一致,并且实现类以Impl为后缀,否则会异常, 框架会尝试按方法名解析推测查询条件。
public interface UserInfoCustomRepo {
List<UserInfo> customSelectAll(String name);
void update(UserInfo user);
}
- 实现接口
public class UserInfoCustomRepoImpl implements UserInfoCustomRepo{
@Autowired
private MongoTemplate template;
@Override
public List<UserInfo> customSelectAll(String name) {
System.out.println("In Custom UserInfo repo :customSelectAll ");
return template.find(new Query(where("userName").is(name)), UserInfo.class);
}
@Override
public void update(UserInfo user) {
System.out.println("In Custom UserInfo repo :update ");
template.save(user);
}
}
注入MongoTemplate ;
通过模板实现代码;
- 使用该自定义接口
public interface UserInfoRepository extends MongoRepository<UserInfo, Long> , UserInfoCustomRepo {
}
- 测试
@Test
public void test4CustomSelecAll() {
List<UserInfo> lu = repo.customSelectAll("username");
System.out.println(lu.size());
for (UserInfo u : lu) {
System.out.println(u.toString());
}
}
@Test
public void test4update() {
UserInfo user = new UserInfo();
user.setId("5b4db8092e069460b8cd4604");
user.setEmail("new@123413.comc");
user.setNickName("new nick");
user.setLoginCount(new AtomicLong(33l));
user.setLastLoginTime(new Date());
repo.update(user);
}
spring data mongo 配置日志打印nosql
在application.yml配置文件中添加:
logging:
level:
org:
springframework:
data:
mongodb:
core: DEBUG
索引
domain类的字段上添加 :
@Indexed(unique = true) 唯一索引。
@Indexed 索引。
类上添加:
@CompoundIndexes({
@CompoundIndex(name = "age_idx", def = "{'lastName': 1, 'age': -1}")
})
组合索引。
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