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  • MongoDB和Java（4）：Spring Data整合MongoDB（XML配置）

    最近花了一些时间学习了下MongoDB数据库，感觉还是比较全面系统的，涉及了软件安装、客户端操作、安全认证、副本集和分布式集群搭建，以及使用Spring Data连接MongoDB进行数据操作，收获很大。特此记录，以备查看。

    文章目录：

    MongoDB和Java（1）：Linux下的MongoDB安装

    MongoDB和Java（2）：普通用户启动mongod进程

    MongoDB和Java（3）：Java操作MongoB

    MongoDB和Java（4）：Spring Data整合MongoDB（XML配置）

    MongoDB和Java（5）：Spring Data整合MongoDB（注解配置）

    MongoDB和Java（6）：Spring Data整合MongoDB副本集、分片集群

    MongoDB和Java（7）：MongoDB用户管理

    本文记录如何使用XML配置方式整合Spring data和MongoDB

    源代码下载
    MongoDB和Java学习代码.zip

    1、环境准备

    JDK　　　　　1.8
    Spring　　　　4.2.5.RELEASE
    Junit　　　　   4.10
    Spring-data-mongodb　　1.9.0.RELEASE
    Logback　　　1.1.7

    Maven　　　　3.2.1

    依赖

     1 <properties>
 2     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 3     <maven.compiler.source>1.8</maven.compiler.source>
 4     <maven.compiler.target>1.8</maven.compiler.target>
 5     <spring.version>4.2.5.RELEASE</spring.version>
 6 </properties>
 7 
 8 <dependencies>
 9 
10     <dependency>
11         <groupId>junit</groupId>
12         <artifactId>junit</artifactId>
13         <version>4.10</version>
14         <scope>test</scope>
15     </dependency>
16 
17     <dependency>
18         <groupId>org.springframework</groupId>
19         <artifactId>spring-context-support</artifactId>
20         <version>${spring.version}</version>
21     </dependency>
22     <dependency>
23         <groupId>org.springframework</groupId>
24         <artifactId>spring-aop</artifactId>
25         <version>${spring.version}</version>
26     </dependency>
27     <dependency>
28         <groupId>org.springframework</groupId>
29         <artifactId>spring-test</artifactId>
30         <version>${spring.version}</version>
31         <scope>test</scope>
32     </dependency>
33 
34     <dependency>
35         <groupId>org.springframework.data</groupId>
36         <artifactId>spring-data-mongodb</artifactId>
37         <version>1.9.0.RELEASE</version>
38     </dependency>
39 
40     <!-- logback日志 -->
41     <dependency>
42         <groupId>ch.qos.logback</groupId>
43         <artifactId>logback-core</artifactId>
44         <version>1.1.7</version>
45     </dependency>
46     <dependency>
47         <groupId>ch.qos.logback</groupId>
48         <artifactId>logback-classic</artifactId>
49         <version>1.1.7</version>
50     </dependency>
51     <dependency>
52         <groupId>org.aspectj</groupId>
53         <artifactId>aspectjweaver</artifactId>
54         <version>1.6.1</version>
55     </dependency>
56 
57 </dependencies>
58 
59 <build>
60     <finalName>security-demo</finalName>
61     <plugins>
62         <plugin>
63             <groupId>org.apache.maven.plugins</groupId>
64             <artifactId>maven-compiler-plugin</artifactId>
65             <version>3.3</version>
66             <configuration>
67                 <source>${maven.compiler.source}</source>
68                 <target>${maven.compiler.target}</target>
69                 <encoding>${project.build.sourceEncoding}</encoding>
70             </configuration>
71         </plugin>
72     </plugins>
73 </build>

    2、mongodb配置文件

    这个是spring的子配置文件，通过从.properties文件读取连接属性创建mongoClient对象，再创建DBFactory对象，通过DBFactory创建MongoTemplate，我们的数据层实现类就是使用MongoTemplate操作MongoDB的。

     1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:mongo="http://www.springframework.org/schema/data/mongo"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7             http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
 8             http://www.springframework.org/schema/context 
 9                   http://www.springframework.org/schema/context/spring-context-4.2.xsd 
10                   http://www.springframework.org/schema/data/mongo 
11                   http://www.springframework.org/schema/data/mongo/spring-mongo-1.8.xsd">
12 
13     <!-- 连接属性文件，配置服务器IP端口、数据库和连接参数 -->
14     <context:property-placeholder location="classpath:mongodb.properties"
15                             ignore-unresolvable="true" />
16 
17     <!-- 创建MongoClient -->
18     <mongo:mongo-client id="mongo" replica-set="${mongo.hostport}">
19         <mongo:client-options connections-per-host="${mongo.connectionsPerHost}"
20             threads-allowed-to-block-for-connection-multiplier=
21                     "${mongo.threadsAllowedToBlockForConnectionMultiplier}"
22             connect-timeout="${mongo.connectTimeout}" max-wait-time="${mongo.maxWaitTime}"
23             socket-keep-alive="${mongo.socketKeepAlive}" 
24             socket-timeout="${mongo.socketTimeout}" />
25     </mongo:mongo-client>
26 
27     <!-- MongoDbFactory -->
28     <mongo:db-factory id="mgFactory" dbname="${mongo.dbname}"
29             mongo-ref="mongo" />
30 
31     <!-- MongoTemplate -->
32     <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
33         <constructor-arg name="mongoDbFactory" ref="mgFactory" />
34     </bean>
35 
36 </beans>
    View Code

    mongodb.properties

    1 mongo.hostport=10.10.12.195:27017
2 mongo.dbname=test
3 mongo.connectionsPerHost=8
4 mongo.threadsAllowedToBlockForConnectionMultiplier=4
5 mongo.connectTimeout=1000
6 mongo.maxWaitTime=1500
7 mongo.socketKeepAlive=true
8 mongo.socketTimeout=1500

    3、spring主配置文件

    application.xml是spring的主配置文件，配置组件扫描，另外还要引入mongo的配置

     1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:tx="http://www.springframework.org/schema/tx" 
 6     xmlns:aop="http://www.springframework.org/schema/aop"
 7     xsi:schemaLocation="http://www.springframework.org/schema/beans
 8             http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
 9             http://www.springframework.org/schema/context   
10               http://www.springframework.org/schema/context/spring-context-4.2.xsd">
11 
12     <!-- 组件扫描 -->
13     <context:component-scan base-package="org.net5ijy.mongo.dao" />
14     <!--使用注解管理bean -->
15     <context:annotation-config />
16 
17     <import resource="application-mongo.xml" />
18 
19 </beans>

    4、实体类和数据层

    Employee

     1 @Document(collection = "employee")
 2 public class Employee implements Serializable {
 3 
 4     @Id
 5     @Field(value = "_id")
 6     private String id;
 7 
 8     @Field(value = "name")
 9     private String name;
10 
11     @Field
12     private Integer age;
13 
14     @Field
15     private Date createTime = new Date();
16 
17     public Employee() {
18         super();
19     }
20     public Employee(String name, Integer age) {
21         super();
22         this.name = name;
23         this.age = age;
24     }
25 
26     // getter & setter
27 }

    数据层实现

     1 @Repository
 2 public class EmployeeDaoImpl implements EmployeeDao {
 3 
 4     @Autowired
 5     private MongoTemplate mongoTemplate;
 6 
 7     @Override
 8     public List<Employee> findAll() {
 9         return mongoTemplate.findAll(Employee.class);
10     }
11 
12     @Override
13     public void insertOneEmployee(Employee employee) {
14         mongoTemplate.insert(employee);
15     }
16 
17     @Override
18     public void deleteOneEmployeeByName(String name) {
19         Criteria c = new Criteria();
20         c.and("name").is(name);
21         Query query = new Query(c);
22         mongoTemplate.remove(query, Employee.class);
23     }
24 
25     @Override
26     public void deleteOneEmployee(String id) {
27         Criteria c = new Criteria();
28         c.and("_id").is(id);
29         Query query = new Query(c);
30         mongoTemplate.remove(query, Employee.class);
31     }
32 
33     @Override
34     public Employee findByName(String name) {
35         Criteria c = new Criteria();
36         c.and("name").is(name);
37         Query query = new Query(c);
38         return mongoTemplate.findOne(query, Employee.class);
39     }
40 
41     @Override
42     public Employee find(String id) {
43         return mongoTemplate.findById(id, Employee.class);
44     }
45 }
    View Code

    代码中把MongoTemplate注入到了实现类，然后使用它的API进行数据库操作。

    5、Junit测试类

     1 @RunWith(SpringJUnit4ClassRunner.class)
 2 @ContextConfiguration(locations = { "classpath:application.xml" })
 3 public class EmployeeDaoImplTest {
 4 
 5     @Autowired
 6     private EmployeeDao employeeDao;
 7 
 8     @Autowired
 9     private ApplicationContext context;
10 
11     @Test
12     public void testFindAll() {
13         List<Employee> list = employeeDao.findAll();
14         for (Employee employee : list) {
15             System.out.println(employee);
16         }
17     }
18 
19     @Test
20     public void testInsertOneEmployee() {
21         Employee e = new Employee("admin", 28);
22         employeeDao.insertOneEmployee(e);
23     }
24 
25     @Test
26     public void testDeleteOneEmployeeByName() {
27         employeeDao.deleteOneEmployeeByName("admin");
28     }
29 
30     @Test
31     public void testDeleteOneEmployee() {
32         Employee e = employeeDao.findByName("admin");
33         employeeDao.deleteOneEmployee(e.getId());
34     }
35 
36     @Test
37     public void testFindByName() {
38         Employee e = employeeDao.findByName("admin");
39         System.out.println(e);
40     }
41 
42     @Test
43     public void testFind() {
44         Employee e = employeeDao.findByName("admin");
45         Employee e2 = employeeDao.find(e.getId());
46         System.out.println(e2);
47     }
48 }

    6、参考资料

    Spring Data MongoDB - Reference Documentation

    https://docs.spring.io/spring-data/mongodb/docs/1.10.15.RELEASE/reference/html/
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  • 原文地址：https://www.cnblogs.com/xugf/p/9772315.html
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