1、搭建测试环境
- 步骤一：创建 maven 项目
-
父项目的pom文件
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.tqylxuecheng</groupId> <artifactId>xc_parent</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <modules> <module>xc_test_parent</module> </modules> <!-- 1 确定spring boot的版本--> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.4.RELEASE</version> </parent> <!--2 确定版本--> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> <spring-cloud-release.version>Greenwich.RELEASE</spring-cloud-release.version> <mybatis.starter.version>1.3.2</mybatis.starter.version> <mapper.starter.version>2.0.3</mapper.starter.version> <pageHelper.starter.version>1.2.3</pageHelper.starter.version> <druid.starter.version>1.1.9</druid.starter.version> <mysql-connector-java.version>5.1.32</mysql-connector-java.version> <lombok.version>1.16.20</lombok.version> <commons-io.version>2.6</commons-io.version> <org.apache.commons.io.version>1.3.2</org.apache.commons.io.version> <commons-fileupload.version>1.3.3</commons-fileupload.version> <commons-codec.version>1.10</commons-codec.version> <commons-lang3.version>3.6</commons-lang3.version> <okhttp.version>3.9.1</okhttp.version> <feign-okhttp.version>8.18.0</feign-okhttp.version> <springfox-swagger.version>2.7.0</springfox-swagger.version> <fastjson.version>1.2.9</fastjson.version> <fastdfs-client-java.version>1.27.0.0</fastdfs-client-java.version> <guava.version>24.0-jre</guava.version> </properties> <!-- 3 锁定sprig cloud版本--> <dependencyManagement> <dependencies> <!--sprig cloud版本--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud-release.version}</version> <type>pom</type> <scope>import</scope> </dependency> <!-- mybatis启动器 --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>${mybatis.starter.version}</version> </dependency> <!-- 通用Mapper启动器 --> <dependency> <groupId>tk.mybatis</groupId> <artifactId>mapper-spring-boot-starter</artifactId> <version>${mapper.starter.version}</version> </dependency> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper-spring-boot-starter</artifactId> <version>${pageHelper.starter.version}</version> </dependency> <!-- druid启动器 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>${druid.starter.version}</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql-connector-java.version}</version> </dependency> <dependency> <groupId>com.squareup.okhttp3</groupId> <artifactId>okhttp</artifactId> <version>${okhttp.version}</version> </dependency> <dependency> <groupId>com.netflix.feign</groupId> <artifactId>feign-okhttp</artifactId> <version>${feign-okhttp.version}</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>${commons-io.version}</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-io</artifactId> <version>${org.apache.commons.io.version}</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>${commons-fileupload.version}</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>${commons-codec.version}</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>${commons-lang3.version}</version> </dependency> <!--swagger2--> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>${springfox-swagger.version}</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>${springfox-swagger.version}</version> </dependency> <!--fastdfs--> <dependency> <groupId>net.oschina.zcx7878</groupId> <artifactId>fastdfs-client-java</artifactId> <version>${fastdfs-client-java.version}</version> </dependency> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>${guava.version}</version> </dependency> </dependencies> </dependencyManagement> <!-- 4 确定spring cloud私有仓库--> <repositories> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> </project> -
步骤三：子模块测试
- 结构目录
-
test_mongo 的 pom文件添加依赖
<dependencies> <!--测试--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> <!--mongodb--> <dependency> <groupId>org.mongodb</groupId> <artifactId>mongo-java-driver</artifactId> <version>3.4.3</version> </dependency> </dependencies>
2、基本操作
- 创建测试类 Test01
2.1、获得连接
-
方式1：连接本地数据库
@Test public void testConnection() { //获得本地连接 MongoClient mongoClient = new MongoClient("localhost", 27017); System.out.println(mongoClient); } -
方式2：采用连接字符串
@Test public void testConnection2() { //获得连接 //拼凑连接字符串 MongoClientURI connectionString = new MongoClientURI("mongodb://root:1234@localhost:27017"); //获得连接 MongoClient mongoClient = new MongoClient(connectionString); System.out.println(mongoClient); }
2.2、查询第一个
@Test
public void testFindOne(){
//查询一个
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:1234@localhost:27017");
MongoClient mongoClient = new MongoClient(mongoClientURI);
// 2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 获得集合
MongoCollection<Document> studentCollection = database.getCollection("student");
//4 查询操作
Document document = studentCollection.find().first();
//5 将文档转换json，并输出
System.out.println(document.toJson());
}
2.3、创建集合
@Test
public void testCreateColl(){
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:1234@localhost:27017");
MongoClient mongoClient = new MongoClient(mongoClientURI);
//2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 创建集合
database.createCollection("teacher");
}
2.4、插入一个文档
@Test
public void testInsertDocument(){
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:1234@localhost:27017");
MongoClient mongoClient = new MongoClient( mongoClientURI );
//2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 获得集合
MongoCollection<Document> collection = database.getCollection("teacher");
//4 准备文档
Document document = new Document();
document.append("username","jack");
document.append("password","1234");
document.append("age", 18 );
//5 录入文档
collection.insertOne(document);
}
2.5、批量插入文档
@Test
public void testInsertManyDocument(){
//批量插入
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:1234@localhost:27017");
MongoClient mongoClient = new MongoClient(mongoClientURI);
//2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 获得集合
MongoCollection<Document> collection = database.getCollection("teacher");
//4 准备一组数据
Document doc = new Document();
doc.append("username","rose");
doc.append("password","1234");
doc.append("age", 21 );
Document doc2 = new Document();
doc2.append("username","tom");
doc2.append("password","666");
doc2.append("age", 25 );
List<Document> list = new ArrayList<>();
list.add( doc );
list.add( doc2 );
//5 批量插入
collection.insertMany( list );
}
2.6、查询所有
@Test
public void testFindAll(){
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:1234@localhost:27017");
MongoClient mongoClient = new MongoClient(mongoClientURI);
//2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 获得集合
MongoCollection<Document> collection = database.getCollection("teacher");
//4 查询所有
FindIterable<Document> findIterable = collection.find();
//5 处理数据（遍历迭代器）
MongoCursor<Document> it = findIterable.iterator();
while( it.hasNext() ){
Document document = it.next();
String username = document.get("username", String.class);
String password = document.get("password", String.class);
Integer age = document.get("age", Integer.class);
System.out.println(username + "_" + password + "_" + age);
}
2.7、更新文档
@Test
public void testReplace(){
//替换操作
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:1234@localhost:27017");
MongoClient mongoClient = new MongoClient(mongoClientURI);
//2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 获得集合
MongoCollection<Document> collection = database.getCollection("teacher");
//4 更新
Document doc = new Document("password","999");
collection.replaceOne(Filters.eq("username","jack"), doc );
}
2.8、删除文档
@Test
public void testDelete(){
//1 获得连接
MongoClientURI mongoClientURI = new MongoClientURI("mongodb://root:root@localhost:27017");
MongoClient mongoClient = new MongoClient(mongoClientURI);
//2 获得数据库
MongoDatabase database = mongoClient.getDatabase("demo");
//3 获得集合
MongoCollection<Document> collection = database.getCollection("teacher");
//4 删除
collection.deleteOne(Filters.eq("username","tom"));
来源：oschina
链接：https://my.oschina.net/tingqianyunluo/blog/4312623