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Java访问MongoDB

pom.xml

代码语言：javascript代码运行次数：0运行复制
<project xmlns=".0.0" xmlns:xsi="; xsi:schemaLocation=".0.0 .0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>mongoDB</groupId>
  <artifactId>mongoDB</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <mavenpiler.source>17</mavenpiler.source>
    <mavenpiler.target>17</mavenpiler.target>
<maven-compiler-plugin-version>3.8.1</maven-compiler-plugin-version>
  </properties>
  
<dependencies>
<dependency>
      <groupId>org.mongodb</groupId>
      <artifactId>mongo-java-driver</artifactId>
      <version>3.12.10</version>
</dependency>
<dependency>
      <groupId>org.mongodb</groupId>
      <artifactId>mongodb-driver-sync</artifactId>
      <version>4.5.0</version>
</dependency>
<dependency>  
      <groupId>org.assertj</groupId>  
      <artifactId>assertj-core</artifactId>  
      <version>3.21.0</version> <!-- 使用最新版本 -->  
      <scope>test</scope>  
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.8.2</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

链接MongoDB Java实现

代码语言：javascript代码运行次数：0运行复制
package mongoDB;
           
import com.mongodb.MongoClient;
import com.mongodb.client.FindIterable;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.model.Filters;
import com.mongodb.client.model.InsertOneModel;
import com.mongodb.client.model.WriteModel;    
import com.mongodb.client.result.DeleteResult;
import com.mongodb.client.result.UpdateResult;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import org.bson.Document;
import org.bson.conversions.Bson;
           
import java.util.ArrayList;
import java.util.List;
           
public class MongoDB {
    // MongoDB服务器的连接URI
    public static  String uri = "mongodb://192.168.31.184:27017";
    // 创建MongoClient实例
    public static MongoClientURI clientURI = new MongoClientURI(uri);
    public MongoClient mongoClient = new MongoClient(clientURI);     
       
    public MongoDatabase connect(String dbname) {    
        // 连接成功，可以进行数据库操作
        System.out.println("Connected to MongoDB");
        // 获取数据库实例
        MongoDatabase database = mongoClient.getDatabase(dbname);
        return database;
    }
    
    public void disconnect() {
           // 关闭连接
           this.mongoClient.close();
    }
    
    public MongoCollectiongetCollection(MongoDatabase database,String mycollection) {    
    
        // 获取集合实例
        MongoCollection collection = database.getCollection(mycollection);    
        return collection;
    }
    
    public void insertOneDocument(String key1,String value1,String key2,int value2,MongoCollectioncollection) {
            // 插入单条文档
        Document document = new Document(key1, value1)
               .append(key2, value2);
               collection.insertOne(document);
    }
    
    public void insertManyDocument(String[][] values,MongoCollectioncollection) {          
    
           // 创建多个文档列表
           List documents = new ArrayList<>();
           for(int i=0;i
                  documents.add(new Document("name", values[i][0]).append("age", Integer.parseInt(values[i][1])));    
           }
        // 创建插入模型列表
        List     <WriteModel> insertManyModels = new ArrayList<>();</WriteModel
        documents.forEach(doc -> insertManyModels.add(new InsertOneModel<>(doc)));
           
        // 插入多条记录
        collection.insertMany(documents);
    }
    
    public MongoCursorsearchDocument(String key,String value,MongoCollectioncollection) {
           // 根据关键字查询文档
           Document query = new Document(key, value);
           MongoCursor cursor = collection.find(query).iterator();
           return cursor;    
    }
    
    public FindIterablefuzzyQuery(String key,String value,MongoCollectioncollection) {
           Bson eq = Filters.regex(key, value);
           FindIterableiterable = collection.find(eq);
           return iterable;
    }
    
    public FindIterableViewAllDocument(MongoCollectioncollection) {
       //显示所有的文档
       FindIterable iterable = collection.find();
       return iterable;
    }
    
    public UpdateResult updateOneDocument(String key_filter,String value_filter,String key_update,String value_update,MongoCollectioncollection) {    
        // 更新一条文档
        Document filter = new Document(key_filter,value_filter);
        Document update = new Document("$set", new Document(key_update,value_update));
        return collection.updateOne(filter, update);
    }
    
    public UpdateResult updateOneDocument(String key_filter,String value_filter,String key_update,int value_update,MongoCollectioncollection) {
       // 更新一条文档
       Document filter = new Document(key_filter,value_filter);
       Document update = new Document("$set", new Document(key_update,value_update));
       return collection.updateOne(filter, update);
   }
        
    public UpdateResult updateManyDocument(String key_filter,String value_filter,String key_update,int value_update,MongoCollectioncollection) {
           // 更新多条文档
           Document filter = new Document(key_filter,value_filter);
           Document update = new Document("$set", new Document(key_update,value_update));
           return collection.updateMany(filter, update);
    }
    
    public UpdateResult updateManyDocument(String key_filter,int value_filter,String key_update,int value_update,MongoCollectioncollection) {
           // 更新多条文档
           Document filter = new Document(key_filter,value_filter);
           Document update = new Document("$set", new Document(key_update,value_update));
           return collection.updateMany(filter, update);
    }    
    
    
    public DeleteResult deleteManyDocument(String key,String value,MongoCollectioncollection) {
        // 删除多条文档
           Document filter = new Document(key, value);
           return collection.deleteOne(filter);
    }
    
    public DeleteResult deleteManyDocument(String key,int value,MongoCollectioncollection) {
        // 删除多条文档
           Document filter = new Document(key, value);
           return collection.deleteMany(filter);
    }
    
    public DeleteResult deleteOneDocument(String key,String value,MongoCollectioncollection) {    
        // 删除一条文档
           Document filter = new Document(key, value);
           return collection.deleteOne(filter);
    }
    
    public DeleteResult deleteOneDocument(String key,int value,MongoCollectioncollection) {
        // 删除一条文档
           Document filter = new Document(key, value);
           return collection.deleteOne(filter);
    }
}

JUnit5 测试代码testMongoDB.java

代码语言：javascript代码运行次数：0运行复制
package mongoDB;
           
import org.bson.Document; 
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;    
           
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
           
import com.mongodb.client.FindIterable;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoCursor;
import com.mongodb.client.MongoDatabase;
import com.mongodb.client.result.DeleteResult;
import com.mongodb.client.result.UpdateResult;
           
public class testMongoDB {    
       static MongoDB mdb = new MongoDB();
       static MongoCollectioncollection = null;
       static String key1 = "name";
       static String value1 = "Jone";
       static String key2 = "age";
       static int value2 = 35;
       static String[][] values = {{"Alice","25"},{"Bob","25"},{"Jerry","25"}};
           
       @BeforeAll
       @DisplayName("运行所有测试用例前连接数据库")
       public static void  startALL(){
           MongoDatabase database = mdb.connect("admin");
           collection = mdb.getCollection(database,"person");
              
       }
           
       @AfterAll
       @DisplayName("运行所有测试用例后断开数据库")    
       public static void endAll(){
              mdb.disconnect();
       }
       
       @BeforeEach
       @DisplayName("每条用例开始时执行")
       public void start(){
              mdb.insertOneDocument(key1,value1,key2,value2,collection);
              mdb.insertManyDocument(values,collection);
       }
       
       @AfterEach
       @DisplayName("每条用例结束时执行")
       public void end(){
              mdb.deleteOneDocument(key1,value1,collection);
              mdb.deleteManyDocument("age",25,collection);
       }
               
       @Test
       @DisplayName("测试显示所有的记录")
       public void testViewAllDocument() {
              boolean judge=false;
              FindIterableiterable=mdb.ViewAllDocument(collection);
              for (Document document : iterable) {
                     assertThat(document.toJson().matches("\"$oid\":^[A-Za-z0-9]+$")); 
                     assertThat(document.toJson().matches("\"name\":^[A-Za-z]+$"));
                     assertThat(document.toJson().matches("\"age\":\\d+")); 
                     judge = true;
           }
              Assertions.assertTrue(judge);
       }
       
       @Test    
       @DisplayName("测试模糊查询")
       public void testFuzzyQuery() {
              boolean judge=false;
              String key = "name";
              String value ="J";
              FindIterableiterable = mdb.fuzzyQuery(key, value,collection);
              for (Document document : iterable) {
                     assertThat(document.toJson().matches("\"$oid\":^[A-Za-z0-9]+$")); 
                     assertThat(document.toJson().matches("\"name\": \"Q"));
                     assertThat(document.toJson().matches("\"age\":\\d+")); 
                     judge = true;
           }
              Assertions.assertTrue(judge);
       }
       
       @Test    
       @DisplayName("测试setUp()函数中插入的一条数据是否成功")
       public void testInsertOneDocument() {
              judgeDataInDB(key1,value1);
       }
       
       @Test
       @DisplayName("测试setUp()函数中插入的多条数据是否成功")
       public void testInsertManyDocument() {
              for (int i = 0;i < 3 ;i++) {
                     judgeDataInDB(key1,values[i][0]);
              }
       }
       
       @Test
       @DisplayName("测试修改一条数据是否成功")
       public void testUpdateOneDocument() {
              String key_filter = "name";
              String value_filter ="Alice";    
              String key_update = "age";
              int value_update = 25;
              UpdateResult updateOne = mdb.updateOneDocument(key_filter,value_filter,key_update,value_update,collection);
              assertThat(String.valueOf(updateOne).matches("matchedCount=1, modifiedCount=1"));
       }
       
       @Test
       @DisplayName("测试修改多条数据是否成功")
       public void testUpdateManyDocument() {
              String key_filter = "age";
              int value_filter =25;
              String key_update = "age";
              int value_update = 30;
              UpdateResult updateOne = mdb.updateManyDocument(key_filter,value_filter,key_update,value_update,collection);    
              assertThat(String.valueOf(updateOne).matches("matchedCount=2, modifiedCount=2"));
       }
       
       @Test
       @DisplayName("测试删除一条数据是否成功")
       public void testDeleteOneDocument() {
              String key_filter = "name";
              String value_filter ="Alice";
              DeleteResult deleteOne = mdb.deleteOneDocument(key_filter,value_filter,collection);
              assertThat(String.valueOf(deleteOne).matches("matchedCount=1, modifiedCount=1"));
       }
       
       @Test
       @DisplayName("测试删除多条数据是否成功")
       public void testDeleteManyDocument() {    
              String key_filter = "age";
              int value_filter =25;
              DeleteResult deleteOne = mdb.deleteManyDocument(key_filter,value_filter,collection);
              assertThat(String.valueOf(deleteOne).matches("matchedCount=2, modifiedCount=2"));
       }
       
       //验证数据是否在数据库中
       public void judgeDataInDB(String key_update,String value_update) {
              MongoCursorcursor=mdb.searchDocument(key_update,String.valueOf(value_update),collection);
              while (cursor.hasNext()) {
                     Document result = cursor.next();
                  assertThat(result.toJson().matches("\""+key_update+"\":\""+String.valueOf(value_update)+"\""));
           }
       }     
}
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本文标签： Java访问MongoDB

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