详解MongoDB和Spring整合的实例代码

<dependency>   <groupId>org.springframework.data</groupId>   <artifactId>spring-data-mongodb</artifactId>   <version>1.10.3.RELEASE</version></dependency>

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:util="http://www.springframework.org/schema/util"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:mongo="http://www.springframework.org/schema/data/mongo"    xsi:schemaLocation="    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd  http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd  http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd">  <context:property-placeholder      ignore-unresolvable="true" location="classpath:/mongodb.properties"/>  <mongo:mongo-client id="mongoClient" host="${mongo.host}" port="${mongo.port}">    <!-- credentials="${mongo.user}:${mongo.pwd}@${mongo.defaultDbName}"-->  </mongo:mongo-client>  <mongo:db-factory id="mongoDbFactory"           dbname="${mongo.database}"           mongo-ref="mongoClient"/>  <!-- 默认Mongodb类型映射 -->  <bean id="defaultMongoTypeMapper" class="org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper">    <constructor-arg name="typeKey">      <!-- 这里设置为空,可以把 spring data mongodb 多余保存的_class字段去掉 -->      <null/>    </constructor-arg>  </bean>  <mongo:repositories base-package="com.critc.mongo"/>  <!-- 自动扫描以下包的有Doucment注解的类 -->  <mongo:mapping-converter id="mappingConverter" base-package="com.critc.mongo.model"               type-mapper-ref="defaultMongoTypeMapper">  </mongo:mapping-converter>  <!-- Mongodb的模板 -->  <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">    <constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/>    <constructor-arg name="mongoConverter" ref="mappingConverter"/>  </bean></beans>

@Document(collection = "article_info")public class Article {  @Id  private String id;//id  @Field("title")  private String title;//标题  @Field("url")  private String url;//链接  @Field("author")  private String author;//作者  @Field("tags")  private List<String> tags;//tag 标签  @Field("visit_count")  private Long visitCount;//访问次数  @Field("add_time")  private Date addTime;//添加时间// get set方法省略

@Repository("ArticleRepository")public interface ArticleRepository extends PagingAndSortingRepository<Article, String> {  //分页查询  public Page<Article> findAll(Pageable pageable);  //根据author查询  public List<Article> findByAuthor(String author);  //根据作者和标题查询  public List<Article> findByAuthorAndTitle(String author, String title);  //忽略参数大小写  public List<Article> findByAuthorIgnoreCase(String author);  //忽略所有参数大小写  public List<Article> findByAuthorAndTitleAllIgnoreCase(String author, String title);  //排序  public List<Article> findByAuthorOrderByVisitCountDesc(String author);  public List<Article> findByAuthorOrderByVisitCountAsc(String author);  //自带排序条件  public List<Article> findByAuthor(String author, Sort sort);}

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = {"classpath*:applicationContext-mongo.xml"})public class ArticleRepositoryTest {  @Autowired  private ArticleRepository articleRepository;  /**   * 新增记录   */  @Test  public void add() {    //增加一条记录    Article article = new Article();    article.setId("1");    article.setTitle("MongoTemplate的基本使用");    article.setAuthor("kcy");    article.setUrl("http://jianshu.com/");    article.setTags(Arrays.asList("java", "mongodb", "spring"));    article.setVisitCount(0L);    article.setAddTime(new Date());    articleRepository.save(article);    //批量添加    List<Article> articles = new ArrayList<>(10);    for (int i = 0; i < 10; i++) {      Article article2 = new Article();      article2.setId(String.valueOf(i + 1));      article2.setTitle("MongoTemplate的基本使用");      article2.setAuthor("kcy");      article2.setUrl("http://jianshu.com" + i);      article2.setTags(Arrays.asList("java", "mongodb", "spring"));      article2.setVisitCount(0L);      article2.setAddTime(new Date());      articles.add(article2);    }    articleRepository.save(articles);  }  /**   * 修改记录，修改id为1的访问次数+1   */  @Test  public void update() {    Article article = articleRepository.findOne("1");    article.setVisitCount(article.getVisitCount() + 1);    articleRepository.save(article);  }  /**   * 批量修改,查看author为kcy的统一修改为kcy2   */  @Test  public void batchUpdate() {    List<Article> articles = articleRepository.findByAuthor("kcy");    articles.forEach(article -> {      article.setAuthor("kcy2");    });    articleRepository.save(articles);  }  /**   * 删除记录,删除id为10的   */  @Test  public void delete() {    Article article = articleRepository.findOne("10");    articleRepository.delete(article);  }  @Test  public void batchDelete() {    List<Article> articles = articleRepository.findByAuthor("kcy2");    articleRepository.delete(articles);  }  /**   * 查询所有   *   * @author 孔垂云   */  @Test  public void findAll() {    Iterable<Article> articles = articleRepository.findAll();    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 根据author查询   *   * @author 孔垂云   */  @Test  public void findByAuthor() {    List<Article> articles = articleRepository.findByAuthor("kcy");    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 按照author和title查询   *   * @author 孔垂云   */  @Test  public void findByAuthorAndTitle() {    List<Article> articles = articleRepository.findByAuthorAndTitle("kcy", "MongoTemplate的基本使用");    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 根据作者查询，忽略大小写   *   * @author 孔垂云   */  @Test  public void findByAuthorIgnoreCase() {    List<Article> articles = articleRepository.findByAuthorIgnoreCase("JASON");    articles.forEach(article -> {      System.out.println(article.getId());    });  }  /**   * 忽略所有参数的大小写   *   * @author 孔垂云   */  @Test  public void findByAuthorAndTitleAllIgnoreCase() {    List<Article> articles = articleRepository.findByAuthorAndTitleAllIgnoreCase("KCY", "MONGOTEMPLATE的基本使用");    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 根据author查询，并且以访问次数降序排序显示   *   * @author 孔垂云   */  @Test  public void findByAuthorOrderByVisitCountDesc() {    List<Article> articles = articleRepository.findByAuthorOrderByVisitCountDesc("kcy");    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 根据作者查询，并且以访问次数升序排序显示   *   * @author 孔垂云   */  @Test  public void findByAuthorOrderByVisitCountAsc() {    List<Article> articles = articleRepository.findByAuthorOrderByVisitCountAsc("kcy");    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 自带排序条件   *   * @author 孔垂云   */  @Test  public void findByAuthorBySort() {    List<Article> articles = articleRepository.findByAuthor("kcy", new Sort(Direction.ASC, "VisitCount"));    articles.forEach(article -> {      System.out.println(article.toString());    });  }  /**   * 分页查询所有，并且排序   */  @Test  public void findByPage() {    int page = 1;    int size = 2;    Pageable pageable = new PageRequest(page, size, new Sort(Direction.ASC, "VisitCount"));    Page<Article> pageInfo = articleRepository.findAll(pageable);    //总数量    System.out.println(pageInfo.getTotalElements());    //总页数    System.out.println(pageInfo.getTotalPages());    for (Article article : pageInfo.getContent()) {      System.out.println(article.toString());    }  }}